APPENDIX 4A:

Details of Construction PhaseNoise Assessment

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A1 Tentative Construction Activities Programme for Noise Assessment

1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site FormationPilingDetritorsModification of Existing FacilitiesFine Screen ChamberFlow Separation ChamberFlowmeter Chamber & Flow Equalization ChamberRapid Mixing Tank & Flocculation TankPrimary Sedimentation TankSludge Buffer TankCentrifuge BuildingTransfer Pumping StationPotable Water Pumping StationReturn Liquor Pumping StationSludge Dewatering House & Storage TankChemical Dosing House & Storage BuildingUV Substation & FacilitiesAdmin. Building & Control RoomDeodourization UnitPipes & CulvertsRoadworksTransformer HouseLandscape works & Establishment worksElectricity Generators for General Purposes

Alternative 4 Bypass CulvertSite Clearance & Site FormationBulk Excavation for Box CulvertSteel Fixing & Concreting of Box CulvertReinstatement & RoadworksElectricity Generators for General Purposes

Ha Tsuen PSSite ClearanceBulk Excavation for Sub-Structure and Site FormationSteel Fixing & Concreting of Sub-StructureSteel Fixing & Concreting of Roof and ColumnsBrick Work & FinishingM&E Installation & PipeworksLandscape Works & RoadworksTesting & CommissioningElectricity Generation for General Purposes

DBL ConstructionDBL Alignment Construction

HSKNDA - Area 5ASite formationRoadworks

YLKTSSD Stage IInstallation of sewer lines

YLKTSSD Stage IIInstallation of sewer lines

200820072003 2004 20062005

App 4A1 Construction Programme.xls\construction program 1 of 1 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A2.1 Noise Sensitive Receivers and Representative Assessment Points

Representative Construction Noise Sensitive Receivers Assessment Points Noise Criteria E N

Ho Ming Primary School N1 70/65* 818007 834504Pui Shing Catholic Secondary School N2 70/65* 818053 834508Ho Tak Sum Primary School N3 70/65* 818142 834202Tang Siu Tong Secondary School N5 70/65* 818192 834160Tin Shing Court N6 75 818030 834394Tin Shing Court N7 75 818073 834310Tin Shing Court N8 75 818115 834226Home for Aged at Sha Chau Lei Road N11 75 817683 834039Sha Chau Lei Tsuen N12 75 817627 834046Tseung Kong Wai N15 75 816790 834612Tseung Kong Wai N16 75 816830 834551Tseung Kong Wai N17 75 816752 834526Villa Oasis N31 75 816863 834558Villa Oasis N32 75 816902 834502Sunny Villas N33 75 816961 834666Sunny Villas N34 75 816895 834648King's Garden N35 75 816970 834601King's Garden N36 75 816974 834575San Wai village house N37 75 816585 834504San Wai village house N38 75 816590 834450San Wai village house N39 75 816660 834463San Wai village house N40 75 816478 834648

Note: *65 dB(A) during examination periods

Coordinates

App 4A2 NSR&AP.xlsNSR&AP 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A2.2 Distance of Noise Sensitive Receivers (NSRs) to Ha Tsuen PS, San Wai STW and Other Projects in the Vicinity

Distance of NSRs to Ha Tsuen PS and other projects with potential cummulative impacts in the vicinity within the study area

NSR X YDistance to site boundary of Ha Tsuen PS (m)

Distance to Notional Noise Source of Ha

Tsuen PS (m)

Distance to DBL (m)

Distance to HSKNDA

Roads (m)

Distance to HSKNDA Area

5A (m)

Distance to Bypass Culvert of Alternative 4 (m)

Distance to YLKSSD Stage 1

(m)

Distance to YLKSSD Stage 2

Original (m)

Distance to YLKSSD Stage 2 Alternative (m)

N1 818006.6 834503.6 134 275 >>300 447 >>300 >>300 362 90 >>300N2 818052.8 834507.6 170 301 >>300 488 >>300 >>300 390 134 >>300N3 818142.4 834201.8 173 231 >>300 581 >>300 >>300 305 310 >>300N5 818191.8 834159.7 222 289 >>300 632 >>300 >>300 359 367 >>300N6 818029.6 834394.4 99 186 >>300 469 >>300 >>300 286 139 >>300N7 818072.5 834309.7 126 172 >>300 511 >>300 >>300 271 208 >>300N8 818114.7 834226.0 153 199 >>300 551 >>300 >>300 283 276 >>300

N11 817682.9 834038.6 183 303 >>300 154 >>300 >>300 72 72 >>300N12 817626.8 834045.6 225 346 >>300 104 >>300 >>300 43 43 >>300

Note : >>300 means the noise sources are outside study area of Ha Tsuen PS Study area for Ha Tsuen PS could be referred to Figure A4.2Notional noise source (NNS) is assumed to be located at a mid-way between the approximate geographical centre of the construction site and its boundary nearest to the NSR for the purpose of construction noise assessment.

Distance of NSRs to San Wai STW and Emergency Bypass Culvert (Alternative 4) and other projects with potential cumulative impacts in the vicinity within the study area

NSR X YDistance to site boundary of San

Wai STW (m)

Distance to Notional Noise Source of San

Wai STW (m)

Distance to DBL (m)

Distance to HSKNDA

Roads (m)

Distance to HSKNDA Area

5A (m)

Distance to Bypass Culvert of Alternative 4 (m)

Distance to YLKSSD Stage 1

(m)

Distance to YLKSSD Stage 2

Original (m)

Distance to YLKSSD Stage 2 Alternative (m)

N15 816789.7 834611.6 443 612 598 340 465 92 508 488 335N16 816829.6 834551.2 450 622 588 368 424 159 467 447 408N17 816751.8 834526.4 368 545 516 296 373 132 418 398 350N31 816863.3 834558.4 483 656 625 396 450 182 487 467 411N32 816901.9 834501.7 504 673 628 392 427 246 445 425 466N33 816961.4 834665.6 615 755 768 445 592 255 620 600 290N34 816894.5 834648.3 549 723 699 402 546 187 580 560 316N35 816969.7 834600.9 593 770 741 489 545 270 568 548 352N36 816973.6 834574.7 594 765 723 490 528 278 542 522 374N37 816585.1 834504.0 208 386 381 163 333 181 338 318 181N38 816590.2 834449.5 190 362 344 128 280 163 287 267 181N39 816660.4 834462.5 260 430 404 183 292 193 320 300 246N40 816478.1 834648.4 270 420 463 85 501 37 446 426 84

Note: Study area for San Wai STW could be referred to Figure A4.1Notional noise source (NNS) is assumed to be located at a mid-way between the approximate geographical centre of the construction site and its boundary nearest to the NSR for the purpose of construction noise assessment.

App 4A2 NSR&AP.xlsdistance 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.1 Inventory of Powered Mechanical Equipment for San Wai STW Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWLSTW ConstructionSite Clearance & Site Formation Backhoe 3 CNP081 112 Table C.3 Ref no. 35 106 -5 101

Bulldozer 2 CNP030 115 Table C.9 Ref no. 2 104 -5 99TOTAL 120 TOTAL 112 TOTAL 107

*Buffer distance (m) 100 *Buffer distance (m) 40 *Buffer distance (m) 22

Piling Piling rig (large diammeter bored, oscillator) 4 CNP 165 115 n/a 115 -10 105TOTAL 121 TOTAL 121 TOTAL 111

*Buffer distance (m) 112 *Buffer distance (m) 112 *Buffer distance (m) 35

Detritors Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 118 TOTAL 107 TOTAL 98*Buffer distance (m) 79 *Buffer distance (m) 22 *Buffer distance (m) 8

Modification of Existing Facilities Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Air compressor 1 CNP 002 102 CNP 002 102 -10 92

TOTAL 122 TOTAL 112 TOTAL 102*Buffer distance (m) 126 *Buffer distance (m) 40 *Buffer distance (m) 13

Fine Screen Chamber Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 119 TOTAL 110 TOTAL 103*Buffer distance (m) 89 *Buffer distance (m) 32 *Buffer distance (m) 14

Flow Separation Chamber Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 119 TOTAL 110 TOTAL 103*Buffer distance (m) 89 *Buffer distance (m) 32 *Buffer distance (m) 14

Flowmeter Chamber & Flow Equalization Chamber Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 3 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 120 TOTAL 112 TOTAL 104*Buffer distance (m) 100 *Buffer distance (m) 40 *Buffer distance (m) 16

Rapid Mixing Tank & Flocculation Tank Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 4 CNP170 113 Table C.6 Ref no.40 98 -10 88

App 4A3 Construction Equipment.xls STW Construction 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.1 Inventory of Powered Mechanical Equipment for San Wai STW Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWLTOTAL 121 TOTAL 113 TOTAL 104

*Buffer distance (m) 112 *Buffer distance (m) 45 *Buffer distance (m) 16

Primary Sedimentation Tank Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Concrete pump 2 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 4 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 10 CNP170 113 Table C.6 Ref no.40 98 -10 88

TOTAL 124 TOTAL 115 TOTAL 106*Buffer distance (m) 158 *Buffer distance (m) 56 *Buffer distance (m) 20

Sludge Buffer Tank Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88

TOTAL 117 TOTAL 110 TOTAL 100*Buffer distance (m) 71 *Buffer distance (m) 32 *Buffer distance (m) 10

Centrifuge Building Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 118 TOTAL 107 TOTAL 98*Buffer distance (m) 79 *Buffer distance (m) 22 *Buffer distance (m) 8

Transfer Pumping Station Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 4 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 121 TOTAL 112 TOTAL 102*Buffer distance (m) 112 *Buffer distance (m) 40 *Buffer distance (m) 13

Potable Water Pumping Station Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 118 TOTAL 107 TOTAL 98*Buffer distance (m) 79 *Buffer distance (m) 22 *Buffer distance (m) 8

Return Liquor Pumping Station Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 118 TOTAL 107 TOTAL 98*Buffer distance (m) 79 *Buffer distance (m) 22 *Buffer distance (m) 8

Sludge Dewatering House & Storage Tank Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 118 TOTAL 107 TOTAL 98*Buffer distance (m) 79 *Buffer distance (m) 22 *Buffer distance (m) 8

App 4A3 Construction Equipment.xls STW Construction 2 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.1 Inventory of Powered Mechanical Equipment for San Wai STW Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWL

Chemical Dosing House & Storage Building Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 4 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 121 TOTAL 112 TOTAL 102*Buffer distance (m) 112 *Buffer distance (m) 40 *Buffer distance (m) 13

UV Substation & Facilities Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -5 90

TOTAL 119 TOTAL 110 TOTAL 100*Buffer distance (m) 89 *Buffer distance (m) 32 *Buffer distance (m) 10

Admin. Building & Control Room Concrete pump 1 CNP047 109 Table C.6 Ref. No. 36 106 -10 96Concrete truck mixer 3 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 4 CNP170 113 Table C.6 Ref no.40 98 -10 88

TOTAL 120 TOTAL 113 TOTAL 103*Buffer distance (m) 100 *Buffer distance (m) 45 *Buffer distance (m) 14

Deodourization Unit Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88

TOTAL 117 TOTAL 107 TOTAL 97*Buffer distance (m) 71 *Buffer distance (m) 22 *Buffer distance (m) 7

Pipes & Culverts Backhoe 2 CNP081 112 Table C.3 Ref no. 35 106 -5 101Roller 1 CNP186 108 Table C.8 Ref no. 29 105 -5 100Piling, oscillator 1 CNP165 115 n/a 115 -10 105Air Compressor 1 CNP 002 102 CNP 002 102 -10 92

TOTAL 121 TOTAL 119 TOTAL 111*Buffer distance (m) 112 *Buffer distance (m) 89 *Buffer distance (m) 35

Roadworks Vibrator 1 CNP170 113 Table C.6 Ref no.40 98 -10 88Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Roller 1 CNP186 108 Table C.8 Ref no. 29 105 -5 100

TOTAL 115 TOTAL 109 TOTAL 102*Buffer distance (m) 56 *Buffer distance (m) 28 *Buffer distance (m) 13

Transformer House Concrete truck mixer 1 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 2 CNP170 113 Table C.6 Ref no.40 98 -10 88

TOTAL 117 TOTAL 107 TOTAL 97*Buffer distance (m) 71 *Buffer distance (m) 22 *Buffer distance (m) 7

Landscape works & Establishment works Air compressor 2 CNP 002 102 CNP 002 102 -10 92TOTAL 105 TOTAL 105 TOTAL 95

App 4A3 Construction Equipment.xls STW Construction 3 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.1 Inventory of Powered Mechanical Equipment for San Wai STW Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWL*Buffer distance (m) 18 *Buffer distance (m) 18 *Buffer distance (m) 6

Electricity Generators for General Purposes Electricity generator 2 CNP102 100 Table C.7 Ref no.54 89 -10 79TOTAL 103 TOTAL 92 TOTAL 82

*Buffer distance (m) 14 *Buffer distance (m) 4 *Buffer distance (m) 1

* Buffer distance required to meet 75 dB(A)

App 4A3 Construction Equipment.xls STW Construction 4 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.2 Inventory of Powered Mechanical Equipment for Ha Tsuen Pumping Station (PS) Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for site hoarding

SWL SWL SWLPS ConstructionSite Clearance Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101

Bulldozer 1 CNP030 115 Table C.9 Ref no. 2 104 -5 99TOTAL 117 TOTAL 108 TOTAL 103

*Buffer distance (m) 71 *Buffer distance (m) 25 *Buffer distance (m) 14

Bulk Excavation for Sub-Structure and Site Formation Backhoe 2 CNP081 112 Table C.3 Ref no. 35 106 -5 101Piling, oscillator 1 CNP165 115 n/a 115 -10 105Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Roller 1 CNP186 108 Table C.8 Ref no. 29 105 -5 100Air Compressor 1 CNP 002 102 CNP 002 102 -10 92Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 124 TOTAL 118 TOTAL 109*Buffer distance (m) 158 *Buffer distance (m) 79 *Buffer distance (m) 28

Steel Fixing & Concreting of Sub-Structure Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 8 CNP170 113 Table C.6 Ref no.40 98 -10 88Backhoe 3 CNP081 112 Table C.3 Ref no. 35 106 -5 101Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 124 TOTAL 114 TOTAL 107*Buffer distance (m) 158 *Buffer distance (m) 50 *Buffer distance (m) 22

Steel Fixing & Concreting of Roof and Columns Concrete truck mixer 2 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 8 CNP170 113 Table C.6 Ref no.40 98 -10 88Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 123 TOTAL 111 TOTAL 101*Buffer distance (m) 141 *Buffer distance (m) 35 *Buffer distance (m) 11

Brick Work & Finishing Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101TOTAL 112 TOTAL 106 TOTAL 101

*Buffer distance (m) 40 *Buffer distance (m) 20 *Buffer distance (m) 11

M&E Installation & Pipeworks Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 115 TOTAL 106 TOTAL 101*Buffer distance (m) 56 *Buffer distance (m) 20 *Buffer distance (m) 11

Landscape Works & Roadworks Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102

TOTAL 122 TOTAL 113 TOTAL 105*Buffer distance (m) 126 *Buffer distance (m) 45 *Buffer distance (m) 18

Electricity Generation for General Purposes Electricity generator 2 CNP102 100 Table C.7 Ref no.54 89 -10 79TOTAL 103 TOTAL 92 TOTAL 82

*Buffer distance (m) 14 *Buffer distance (m) 4 *Buffer distance (m) 1

* Buffer distance required to meet 75 dB(A)

App 4A3 Construction Equipment.xls PS Construction 5 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.3A Inventory of Powered Mechanical Equipment for Emergency Bypass Box Culvert Construction Activities

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWLBypass CulvertSite Clearance & Site Formation Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101

Bulldozer 1 CNP030 115 Table C.9 Ref no. 2 104 -5 99Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Air compressor 1 CNP 002 102 CNP 002 102 -10 92

TOTAL 123 TOTAL 114 TOTAL 106*Buffer distance (m) 141 *Buffer distance (m) 50 *Buffer distance (m) 20

Bulk Excavation for Box Culvert Backhoe 4 CNP081 112 Table C.3 Ref no. 35 106 -5 101Piling, oscillator 1 CNP165 115 n/a 115 -10 105Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Roller 1 CNP186 108 Table C.8 Ref no. 29 105 -5 100Air Compressor 1 CNP 002 102 CNP 002 102 -10 92Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 124 TOTAL 118 TOTAL 110*Buffer distance (m) 158 *Buffer distance (m) 79 *Buffer distance (m) 32

Steel Fixing & Concreting of Box Culvert Concrete truck mixer 4 CNP044 109 Table C.6 Ref no.36 106 -10 96Vibrator 6 CNP170 113 Table C.6 Ref no.40 98 -10 88Backhoe 2 CNP081 112 Table C.3 Ref no. 35 106 -5 101Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 123 TOTAL 114 TOTAL 107*Buffer distance (m) 141 *Buffer distance (m) 50 *Buffer distance (m) 22

Reinstatement & Roadworks Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101Bulldozer 1 CNP030 115 Table C.9 Ref no. 2 104 -5 99Roller 1 CNP186 108 Table C.3 Ref no. 115 102 -5 97

TOTAL 117 TOTAL 109 TOTAL 104*Buffer distance (m) 71 *Buffer distance (m) 28 *Buffer distance (m) 16

Electricity Generation for General Purposes Electricity generator 1 CNP102 100 Table C.7 Ref no.54 89 -10 79TOTAL 100 TOTAL 89 TOTAL 79

*Buffer distance (m) 10 *Buffer distance (m) 3 *Buffer distance (m) 1

* Buffer distance required to meet 75 dB(A)

App 4A3 Construction Equipment.xls Emergency Bypass Cons 6 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.3B Inventory of Powered Mechanical Equipment for Emergency Bypass Box Culvert Construction Activities near N40

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWLBypass CulvertSite Clearance & Site FormationGroup 1 Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101

Bulldozer 1 CNP030 115 Table C.9 Ref no. 2 104 -5 99TOTAL 117 TOTAL 108 TOTAL 103

*Buffer distance (m) 71 *Buffer distance (m) 25 *Buffer distance (m) 14

Group 2 Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Air compressor 1 CNP 002 102 CNP 002 102 -10 92

TOTAL 122 TOTAL 112 TOTAL 102*Buffer distance (m) 126 *Buffer distance (m) 40 *Buffer distance (m) 13

Bulk Excavation for Box CulvertGroup 1 Piling, oscillator 1 CNP165 115 n/a 115 -10 105

TOTAL 115 TOTAL 115 TOTAL 105*Buffer distance (m) 56 *Buffer distance (m) 56 *Buffer distance (m) 18

Group 2 Pneumatic breaker 1 CNP027 122 Table C.3 Ref no. 100 112 -10 102Roller 1 CNP186 108 Table C.3 Ref no. 115 102 -5 97Air Compressor 1 CNP 002 102 CNP 002 102 -10 92

TOTAL 122 TOTAL 113 TOTAL 104*Buffer distance (m) 126 *Buffer distance (m) 45 *Buffer distance (m) 16

Group 3 Backhoe 4 CNP081 112 Table C.3 Ref no. 35 106 -5 101Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 119 TOTAL 112 TOTAL 107*Buffer distance (m) 89 *Buffer distance (m) 40 *Buffer distance (m) 22

Steel Fixing & Concreting of Box CulvertGroup 1 Vibrator 6 CNP170 113 Table C.6 Ref no.40 98 -10 88

Backhoe 2 CNP081 112 Table C.3 Ref no. 35 106 -5 101TOTAL 122 TOTAL 111 TOTAL 105

*Buffer distance (m) 126 *Buffer distance (m) 35 *Buffer distance (m) 18

Group 2 Concrete truck mixer 4 CNP044 109 Table C.6 Ref no.36 106 -10 96Tower crane 1 CNP048 112 CNP049 95 -10 85

TOTAL 117 TOTAL 112 TOTAL 102*Buffer distance (m) 71 *Buffer distance (m) 40 *Buffer distance (m) 13

Reinstatement & RoadworksGroup 1 Backhoe 1 CNP081 112 Table C.3 Ref no. 35 106 -5 101

Bulldozer 1 CNP030 115 Table C.9 Ref no. 2 104 -5 99TOTAL 117 TOTAL 108 TOTAL 103

*Buffer distance (m) 71 *Buffer distance (m) 25 *Buffer distance (m) 14

Group 2 Roller 1 CNP186 108 Table C.3 Ref no. 115 102 -5 97

App 4A3 Construction Equipment.xls Emergency Bypass Cons for N40 7 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.3B Inventory of Powered Mechanical Equipment for Emergency Bypass Box Culvert Construction Activities near N40

UNMITIGATED MITIGATION LEVEL 1 MITIGATION LEVEL 2Activity Proposed Construction Plants Nos CNP No./BS5228 Quiet Plant BS5228 Correction for temporary barrier

SWL SWL SWLTOTAL 108 TOTAL 102 TOTAL 97

*Buffer distance (m) 25 *Buffer distance (m) 13 *Buffer distance (m) 7

Electricity Generation for General Purposes Electricity generator 1 CNP102 100 Table C.7 Ref no.54 89 -10 79TOTAL 100 TOTAL 89 TOTAL 79

*Buffer distance (m) 10 *Buffer distance (m) 3 *Buffer distance (m) 1

* Buffer distance required to meet 75 dB(A)

App 4A3 Construction Equipment.xls Emergency Bypass Cons for N40 8 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.4 Predicted Noise Level of San Wai Sewage Treatment Works (STW) Construction Activities

Distance FaçadeDistance Correction Effect

Nearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 612 -63.7 3N16 Tseung Kong Wai 622 -63.9 3N17 Tseung Kong Wai 545 -62.7 3N31 Villa Oasis 656 -64.3 3N32 Villa Oasis 673 -64.6 3N33 Sunny Villas 755 -65.6 3N34 Sunny Villas 723 -65.2 3N35 King's Garden 770 -65.7 3N36 King's Garden 765 -65.7 3N37 San Wai village house 386 -59.7 3N38 San Wai village house 362 -59.2 3N39 San Wai village house 430 -60.7 3N40 San Wai village house 420 -60.5 3

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40STW Construction

Site Clearance & Site FormationUnmitigated 120 59 59 60 59 58 57 58 57 57 63 64 62 63Mitigated Level 1 112 51 51 52 51 50 49 50 49 49 55 56 54 55Mitigated Level 2 107 46 46 47 46 45 44 45 44 44 50 51 49 50

PilingUnmitigated 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 1 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 2 111 50 50 51 50 49 48 49 48 48 54 55 53 54

DetritorsUnmitigated 118 57 57 58 57 56 55 56 55 55 61 62 60 61Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 98 37 37 38 37 36 35 36 35 35 41 42 40 41

Modification of Existing FacilitiesUnmitigated 122 61 61 62 61 60 59 60 59 59 65 66 64 65Mitigated Level 1 112 51 51 52 51 50 49 50 49 49 55 56 54 55Mitigated Level 2 102 41 41 42 41 40 39 40 39 39 45 46 44 45

Fine Screen ChamberUnmitigated 119 58 58 59 58 57 56 57 56 56 62 63 61 62Mitigated Level 1 110 49 49 50 49 48 47 48 47 47 53 54 52 53

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for STW 9 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.4 Predicted Noise Level of San Wai Sewage Treatment Works (STW) Construction Activities

Mitigated Level 2 103 42 42 43 42 41 40 41 40 40 46 47 45 46SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40

Flow Separation ChamberUnmitigated 119 58 58 59 58 57 56 57 56 56 62 63 61 62Mitigated Level 1 110 49 49 50 49 48 47 48 47 47 53 54 52 53Mitigated Level 2 103 42 42 43 42 41 40 41 40 40 46 47 45 46

Flowmeter Chamber & Flow Equalization ChamberUnmitigated 120 59 59 60 59 58 57 58 57 57 63 64 62 63Mitigated Level 1 112 51 51 52 51 50 49 50 49 49 55 56 54 55Mitigated Level 2 104 43 43 44 43 42 41 42 41 41 47 48 46 47

Rapid Mixing Tank & Flocculation TankUnmitigated 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 1 113 52 52 53 52 51 50 51 50 50 56 57 55 56Mitigated Level 2 104 43 43 44 43 42 41 42 41 41 47 48 46 47

Primary Sedimentation TankUnmitigated 124 63 63 64 63 62 61 62 61 61 67 68 66 67Mitigated Level 1 115 54 54 55 54 53 52 53 52 52 58 59 57 58Mitigated Level 2 106 45 45 46 45 44 43 44 43 43 49 50 48 49

Sludge Buffer TankUnmitigated 117 56 56 57 56 55 54 55 54 54 60 61 59 60Mitigated Level 1 110 49 49 50 49 48 47 48 47 47 53 54 52 53Mitigated Level 2 100 39 39 40 39 38 37 38 37 37 43 44 42 43

Centrifuge BuildingUnmitigated 118 57 57 58 57 56 55 56 55 55 61 62 60 61Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 98 37 37 38 37 36 35 36 35 35 41 42 40 41

Transfer Pumping StationUnmitigated 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 1 112 51 51 52 51 50 49 50 49 49 55 56 54 55Mitigated Level 2 102 41 41 42 41 40 39 40 39 39 45 46 44 45

Potable Water Pumping StationUnmitigated 118 57 57 58 57 56 55 56 55 55 61 62 60 61Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 98 37 37 38 37 36 35 36 35 35 41 42 40 41

Return Liquor Pumping StationUnmitigated 118 57 57 58 57 56 55 56 55 55 61 62 60 61

App 4A3 Construction Equipment.xlsPNL for STW 10 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.4 Predicted Noise Level of San Wai Sewage Treatment Works (STW) Construction Activities

Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 98 37 37 38 37 36 35 36 35 35 41 42 40 41

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40Sludge Dewatering House & Storage Tank

Unmitigated 118 57 57 58 57 56 55 56 55 55 61 62 60 61Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 98 37 37 38 37 36 35 36 35 35 41 42 40 41

Chemical Dosing House & Storage BuildingUnmitigated 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 1 112 51 51 52 51 50 49 50 49 49 55 56 54 55Mitigated Level 2 102 41 41 42 41 40 39 40 39 39 45 46 44 45

UV Substation & FacilitiesUnmitigated 119 58 58 59 58 57 56 57 56 56 62 63 61 62Mitigated Level 1 110 49 49 50 49 48 47 48 47 47 53 54 52 53Mitigated Level 2 100 39 39 40 39 38 37 38 37 37 43 44 42 43

Admin. Building & Control RoomUnmitigated 120 59 59 60 59 58 57 58 57 57 63 64 62 63Mitigated Level 1 113 52 52 53 52 51 50 51 50 50 56 57 55 56Mitigated Level 2 103 42 42 43 42 41 40 41 40 40 46 47 45 46

Deodourization UnitUnmitigated 117 56 56 57 56 55 54 55 54 54 60 61 59 60Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 97 36 36 37 36 35 34 35 34 34 40 41 39 40

Pipes & CulvertsUnmitigated 121 60 60 61 60 59 58 59 58 58 64 65 63 64Mitigated Level 1 119 58 58 59 58 57 56 57 56 56 62 63 61 62Mitigated Level 2 111 50 50 51 50 49 48 49 48 48 54 55 53 54

RoadworksUnmitigated 115 54 54 55 54 53 52 53 52 52 58 59 57 58Mitigated Level 1 109 48 48 49 48 47 46 47 46 46 52 53 51 52Mitigated Level 2 102 41 41 42 41 40 39 40 39 39 45 46 44 45

Transformer HouseUnmitigated 117 56 56 57 56 55 54 55 54 54 60 61 59 60Mitigated Level 1 107 46 46 47 46 45 44 45 44 44 50 51 49 50Mitigated Level 2 97 36 36 37 36 35 34 35 34 34 40 41 39 40

Landscape works & Establishment works

App 4A3 Construction Equipment.xlsPNL for STW 11 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.4 Predicted Noise Level of San Wai Sewage Treatment Works (STW) Construction Activities

Unmitigated 105 44 44 45 44 43 42 43 42 42 48 49 47 48Mitigated Level 1 105 44 44 45 44 43 42 43 42 42 48 49 47 48Mitigated Level 2 95 34 34 35 34 33 32 33 32 32 38 39 37 38

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40Electricity Generators for General Purposes

Unmitigated 103 42 42 43 42 41 40 41 40 40 46 47 45 46Mitigated Level 1 92 31 31 32 31 30 29 30 29 29 35 36 34 35Mitigated Level 2 82 21 21 22 21 20 19 20 19 19 25 26 24 25

Note: Mitigated Level 1 - Use of Quiet Plant Mitigated Level 2 - Use of Quiet Plant + Temporary Barrier

App 4A3 Construction Equipment.xlsPNL for STW 12 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.5A Predicted Noise Level of Alternative 4 Bypass Culvert Construction Activities

Distance FaçadeDistance Correction Effect

Nearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 92 -47.3 3N16 Tseung Kong Wai 159 -52.0 3N17 Tseung Kong Wai 132 -50.4 3N31 Villa Oasis 182 -53.2 3N32 Villa Oasis 246 -55.8 3N33 Sunny Villas 255 -56.1 3N34 Sunny Villas 187 -53.4 3N35 King's Garden 270 -56.6 3N36 King's Garden 278 -56.9 3N37 San Wai village house 181 -53.2 3N38 San Wai village house 163 -52.2 3N39 San Wai village house 193 -53.7 3

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39Alternative 4 Bypass Culvert Construction

Site Clearance & Site FormationUnmitigated 123 79 74 76 73 70 70 73 69 69 73 74 72Mitigated Level 1 114 70 65 67 64 61 61 64 60 60 64 65 63Mitigated Level 2 106 62 57 59 56 53 53 56 52 52 56 57 55

Bulk Excavation for Box CulvertUnmitigated 124 80 75 77 74 71 71 74 70 70 74 75 73Mitigated Level 1 118 74 69 71 68 65 65 68 64 64 68 69 67Mitigated Level 2 110 66 61 63 60 57 57 60 56 56 60 61 59

Steel Fixing & Concreting of Box CulvertUnmitigated 123 79 74 76 73 70 70 73 69 69 73 74 72Mitigated Level 1 114 70 65 67 64 61 61 64 60 60 64 65 63Mitigated Level 2 107 63 58 60 57 54 54 57 53 53 57 58 56

Reinstatement & RoadworksUnmitigated 117 73 68 70 67 64 64 67 63 63 67 68 66Mitigated Level 1 109 65 60 62 59 56 56 59 55 55 59 60 58Mitigated Level 2 104 60 55 57 54 51 51 54 50 50 54 55 53

Electricity Generation for General PurposesUnmitigated 100 56 51 53 50 47 47 50 46 46 50 51 49Mitigated Level 1 89 45 40 42 39 36 36 39 35 35 39 40 38Mitigated Level 2 79 35 30 32 29 26 26 29 25 25 29 30 28

Note: Mitigated Level 1 - Use of Quiet Plant Mitigated Level 2 - Use of Quiet Plant + Temporary Barrier

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for Bypass Culvert 13 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.5B Predicted Noise Level of Alternative 4 Bypass Culvert Construction Activities at N40

Distance FaçadeDistance Correction Effect

Nearest NSRs (m) dB(A) dB(A)

N40 San Wai village house 37 -39.4 3

Max Predicted Noise LevelSWL dB(A) N40

Alternative 4 Bypass Culvert ConstructionSite Clearance & Site Formation

Unmitigated 122 86Mitigated Level 1 112 76Mitigated Level 2 103 67

Bulk Excavation for Box CulvertUnmitigated 122 86Mitigated Level 1 115 79Mitigated Level 2 107 71

Steel Fixing & Concreting of Box CulvertUnmitigated 122 86Mitigated Level 1 112 76Mitigated Level 2 105 69

Reinstatement & RoadworksUnmitigated 117 81Mitigated Level 1 108 72Mitigated Level 2 103 67

Electricity Generation for General PurposesUnmitigated 100 64Mitigated Level 1 89 53Mitigated Level 2 79 43

Note: Mitigated Level 1 - Use of Quiet Plant Mitigated Level 2 - Use of Quiet Plant + Temporary Barrier

Remarks: During construction of bypass culvert, each activity has further divided into sub-tasks involving small groups of PME working concurrently.

App 4A3 Construction Equipment.xlsPNL for Bypass Culvert-N40 14 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.6 Predicted Noise Level of YLKTSSD Construction Activities

YLKTSSD Stage I Construction ActivitiesDistance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 508 -62.1 3N16 Tseung Kong Wai 467 -61.4 3N17 Tseung Kong Wai 418 -60.4 3N31 Villa Oasis 487 -61.8 3N32 Villa Oasis 445 -61.0 3N33 Sunny Villas 620 -63.8 3N34 Sunny Villas 580 -63.3 3N35 King's Garden 568 -63.1 3N36 King's Garden 542 -62.7 3N37 San Wai village house 338 -58.6 3N38 San Wai village house 287 -57.2 3N39 San Wai village house 320 -58.1 3N40 San Wai village house 446 -61.0 3

YLKTSSD Stage II (Original) ConstructionDistance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 488 -61.8 3N16 Tseung Kong Wai 447 -61.0 3N17 Tseung Kong Wai 398 -60.0 3N31 Villa Oasis 467 -61.4 3N32 Villa Oasis 425 -60.6 3N33 Sunny Villas 600 -63.6 3N34 Sunny Villas 560 -63.0 3N35 King's Garden 548 -62.8 3N36 King's Garden 522 -62.4 3N37 San Wai village house 318 -58.0 3N38 San Wai village house 267 -56.5 3N39 San Wai village house 300 -57.5 3N40 San Wai village house 426 -60.6 3

App 4A3 Construction Equipment.xlsPNL for YLKTSSD 15 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.6 Predicted Noise Level of YLKTSSD Construction Activities

YLKTSSD Stage II (Alternative) ConstructionDistance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 335 -58.5 3N16 Tseung Kong Wai 408 -60.2 3N17 Tseung Kong Wai 350 -58.9 3N31 Villa Oasis 411 -60.3 3N32 Villa Oasis 466 -61.4 3N33 Sunny Villas 290 -57.2 3N34 Sunny Villas 316 -58.0 3N35 King's Garden 352 -58.9 3N36 King's Garden 374 -59.5 3N37 San Wai village house 181 -53.2 3N38 San Wai village house 181 -53.2 3N39 San Wai village house 246 -55.8 3N40 San Wai village house 84 -46.5 3

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40YLKTSSD Stage I Construction

Unmitigated 123 64 65 66 64 65 62 63 63 63 67 69 68 65Mitigated Level 1 112 53 54 55 53 54 51 52 52 52 56 58 57 54

YLKTSSD Stage II (Original) Construction

Unmitigated 123 64 65 66 65 65 62 63 63 64 68 69 68 65Mitigated Level 1 112 53 54 55 54 54 51 52 52 53 57 58 57 54

YLKTSSD Stage II (Alternative) Construction

Unmitigated 123 67 66 67 66 65 69 68 67 67 73 73 70 80Mitigated Level 1 112 56 55 56 55 54 58 57 56 56 62 62 59 69

Note: Mitigated Level 1 - Use of Quiet Plant

Remarks: The unmitigated and mitigated results are obtained from Agreement No. CE31/99 - YLKTSSD Stage 1 EIA Report.

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for YLKTSSD 16 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.7 Predicted Noise Level of DBL Construction Activities

Distance FaçadeDistance Correction Effect

Nearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 598 -63.5 3N16 Tseung Kong Wai 588 -63.4 3N17 Tseung Kong Wai 516 -62.3 3N31 Villa Oasis 625 -63.9 3N32 Villa Oasis 628 -64.0 3N33 Sunny Villas 768 -65.7 3N34 Sunny Villas 699 -64.9 3N35 King's Garden 741 -65.4 3N36 King's Garden 723 -65.2 3N37 San Wai village house 381 -59.6 3N38 San Wai village house 344 -58.7 3N39 San Wai village house 404 -60.1 3N40 San Wai village house 463 -61.3 3

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40DBL Construction

Unmitigated 122 61 62 63 61 61 59 60 60 60 65 66 65 64Mitigated Level 2 110 49 50 51 49 49 47 48 48 48 53 54 53 52

Note: Mitigated Level 2 - Use of Quiet Plant + Site Hoarding

Remarks: The unmitigated and mitigated results are obtained from DBL I&PD EIA Report

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for DBL 17 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.8 Predicted Noise Level of HSKNDA Construction Activities

HSKNDA - Area 5A Construction Distance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 465 -61.3 3N16 Tseung Kong Wai 424 -60.5 3N17 Tseung Kong Wai 373 -59.4 3N31 Villa Oasis 450 -61.1 3N32 Villa Oasis 427 -60.6 3N33 Sunny Villas 592 -63.4 3N34 Sunny Villas 546 -62.7 3N35 King's Garden 545 -62.7 3N36 King's Garden 528 -62.5 3N37 San Wai village house 333 -58.4 3N38 San Wai village house 280 -56.9 3N39 San Wai village house 292 -57.3 3N40 San Wai village house 501 -62.0 3

HSKNDA - Road P1 Construction Distance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N15 Tseung Kong Wai 340 -58.6 3N16 Tseung Kong Wai 368 -59.3 3N17 Tseung Kong Wai 296 -57.4 3N31 Villa Oasis 396 -60.0 3N32 Villa Oasis 392 -59.9 3N33 Sunny Villas 445 -61.0 3N34 Sunny Villas 402 -60.1 3N35 King's Garden 489 -61.8 3N36 King's Garden 490 -61.8 3N37 San Wai village house 163 -52.2 3N38 San Wai village house 128 -50.1 3N39 San Wai village house 183 -53.2 3N40 San Wai village house 85 -46.6 3

App 4A3 Construction Equipment.xlsPNL for HSKNDA 18 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.8 Predicted Noise Level of HSKNDA Construction Activities

SWL dB(A) N15 N16 N17 N31 N32 N33 N34 N35 N36 N37 N38 N39 N40HSKNDA Area 5A Construction

Site FormationUnmitigated 120 62 62 64 62 62 60 60 60 61 65 66 66 61Mitigated Level 1 114 56 56 58 56 56 54 54 54 55 59 60 60 55

HSKNDA Road P1 ConstructionRoadworks

Unmitigated 119 63 63 65 62 62 61 62 60 60 70 72 69 75Mitigated Level 1 111 55 55 57 54 54 53 54 52 52 62 64 61 67

Note: Mitigated Level 1 - Use of Quiet Plant

Remarks: The unmitigated and mitigated results are obtained from Agreement No. CE 66/96 - Planning and Development Study on North West New Territories - Technical Paper No. 13 EIA (Draft) (Volume 2)

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for HSKNDA 19 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.9 Predicted Noise Level of Ha Tsuen Pumping Station (PS) Construction Activities

Distance FaçadeDistance Correction Effect

Nearest NSRs (m) dB(A) dB(A)

N1 Ho Ming Primary School 275 -56.8 3N2 Pui Shing Catholic Secondary School 301 -57.6 3N3 Ho Tak Sum Primary School 231 -55.3 3N5 Tang Siu Tong Secondary School 289 -57.2 3N6 Tin Shing Court 186 -53.4 3N7 Tin Shing Court 172 -52.7 3N8 Tin Shing Court 199 -54.0 3N11 Home for Aged at Sha Chau Lei Road 303 -57.6 3N12 Sha Chau Lei Tsuen 346 -58.8 3

SWL dB(A) N1 N2 N3 N5 N6 N7 N8 N11 N12PS Construction

Site ClearanceUnmitigated 117 63 62 65 63 67 67 66 62 61Mitigated Level 1 108 54 53 56 54 58 58 57 53 52Mitigated Level 2 103 49 48 51 49 53 53 52 48 47

Bulk Excavation for Sub-Structure and Site FormationUnmitigated 124 70 69 72 70 74 74 73 69 68Mitigated Level 1 118 64 63 66 64 68 68 67 63 62Mitigated Level 2 109 55 54 57 55 59 59 58 54 53

Steel Fixing & Concreting of Sub-StructureUnmitigated 124 70 69 72 70 74 74 73 69 68Mitigated Level 1 114 60 59 62 60 64 64 63 59 58Mitigated Level 2 107 53 52 55 53 57 57 56 52 51

Steel Fixing & Concreting of Roof and ColumnsUnmitigated 123 69 68 71 69 73 73 72 68 67Mitigated Level 1 111 57 56 59 57 61 61 60 56 55Mitigated Level 2 101 47 46 49 47 51 51 50 46 45

Brick Work & FinishingUnmitigated 112 58 57 60 58 62 62 61 57 56Mitigated Level 1 106 52 51 54 52 56 56 55 51 50Mitigated Level 2 101 47 46 49 47 51 51 50 46 45

M&E Installation & PipeworksUnmitigated 115 61 60 63 61 65 65 64 60 59Mitigated Level 1 106 52 51 54 52 56 56 55 51 50Mitigated Level 2 101 47 46 49 47 51 51 50 46 45

Landscape Works & RoadworksUnmitigated 122 68 67 70 68 72 72 71 67 66Mitigated Level 1 113 59 58 61 59 63 63 62 58 57Mitigated Level 2 105 51 50 53 51 55 55 54 50 49

Electricity Generation for General PurposesUnmitigated 103 49 48 51 49 53 53 52 48 47Mitigated Level 1 92 38 37 40 38 42 42 41 37 36Mitigated Level 2 82 28 27 30 28 32 32 31 27 26

Note: Mitigated Level 1 - Use of Quiet Plant Mitigated Level 2 - Use of Quiet Plant + Site Hoarding

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for PS 20 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A3.10 Predicted Noise Level of YLKTSSD Construction Activities

YLKTSSD Stage I ConstructionDistance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N1 Ho Ming Primary School 362 -59.2 3N2 Pui Shing Catholic Secondary School 390 -59.8 3N3 Ho Tak Sum Primary School 305 -57.7 3N5 Tang Siu Tong Secondary School 359 -59.1 3N6 Tin Shing Court 286 -57.1 3N7 Tin Shing Court 271 -56.7 3N8 Tin Shing Court 283 -57.0 3N11 Home for Aged at Sha Chau Lei Road 72 -45.1 3N12 Sha Chau Lei Tsuen 43 -40.7 3

YLKTSSD Stage II (Original) ConstructionDistance Façade

Distance Correction EffectNearest NSRs (m) dB(A) dB(A)

N1 Ho Ming Primary School 90 -47.1 3N2 Pui Shing Catholic Secondary School 134 -50.5 3N3 Ho Tak Sum Primary School 310 -57.8 3N5 Tang Siu Tong Secondary School 367 -59.3 3N6 Tin Shing Court 139 -50.9 3N7 Tin Shing Court 208 -54.4 3N8 Tin Shing Court 276 -56.8 3N11 Home for Aged at Sha Chau Lei Road 72 -45.1 3N12 Sha Chau Lei Tsuen 43 -40.7 3

SWL dB(A) N1 N2 N3 N5 N6 N7 N8 N11 N12YLKTSSD Stage I Construction

Unmitigated 123 67 66 68 67 69 69 69 81 85Mitigated Level 1 112 56 55 57 56 58 58 58 70 74

YLKTSSD Stage II (Original) Construction

Unmitigated 123 79 75 68 67 75 72 69 81 85Mitigated Level 1 112 68 64 57 56 64 61 58 70 74

Note: Mitigated Level 1 - Use of Quiet Plant

Remarks: The unmitigated and mitigated results are obtained from Agreement No. CE31/99 - YLKTSSD Stage 1 EIA Report.For YLKTSSD Stage II noise levels, they are assumed the same as those obtained from YLKTSSD Stage 1 EIA Report.

Predicted Noise Level

App 4A3 Construction Equipment.xlsPNL for YLKTSSD-HT 21 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N15

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 79 79 79 79 79 79 79 79 79 79Bulk Excavation for Box Culvert 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80Steel Fixing & Concreting of Box Culvert 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79Reinstatement & Roadworks 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Electricity Generators for General Purposes 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Maximum at each month (3) 79 79 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79 79 79 79 79 73 73

Construction of DBL alignment 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

HSKNDA - Area 5ASite formation 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage IInstallation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

YLKTSSD Stage II (Original)Installation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

YLKTSSD Stage II (Alternative)Installation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

Cumulative Impact from Fixed Sites (1) 61 61 61 61 61 61 61 61 61 61 61 79 79 80 80 80 80 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 80 80 80 80 80 80 79 79 79 79 79 74 74 64 64 64

Cumulative Impact from Fixed Sites (2) 61 61 61 61 61 61 61 61 61 61 61 79 79 80 80 80 80 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 80 80 80 80 80 79 74 74 64 64 64

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option (3) activities of bypass culvert construction will not work concurrently at any moment

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N15 1 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N15

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Electricity Generators for General Purposes 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Maximum at each month (3) 70 70 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 70 70 70 70 70 65 65

Construction of DBL alignment 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

HSKNDA - Area 5ASite formation 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

YLKTSSD Stage IInstallation of sewer lines 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage II (Original)Installation of sewer lines 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage II (Alternative)Installation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

Cumulative Impact from Fixed Sites (1) 49 49 49 49 49 49 49 49 49 49 49 70 71 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 71 71 71 71 70 66 66 53 53 53

Cumulative Impact from Fixed Sites (2) 49 49 49 49 49 49 49 49 49 49 49 70 71 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 75 75 74 74 74 74 74 74 74 74 74 74 74 71 71 71 71 70 66 66 53 53 53

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option (3) activities of bypass culvert construction will not work concurrently at any moment

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N15 2 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N16

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 74 74 74 74 74 74 74 74 74 74Bulk Excavation for Box Culvert 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75Steel Fixing & Concreting of Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Reinstatement & Roadworks 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Electricity Generators for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

Construction of DBL alignment 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

HSKNDA - Area 5ASite formation 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage IInstallation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Original)Installation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Alternative)Installation of sewer lines 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

Cumulative Impact from Fixed Sites (1) 62 62 62 62 62 62 62 62 62 62 62 74 75 78 78 78 80 80 80 80 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 76 76 76 76 76 70 70 65 65 65

Cumulative Impact from Fixed Sites (2) 62 62 62 62 62 62 62 62 62 62 62 74 75 78 78 78 80 80 80 80 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 76 76 76 76 76 70 70 65 65 65

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N16 3 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N16

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 65 65 65 65 65 65 65 65 65 65Bulk Excavation for Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Reinstatement & Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Construction of DBL alignment 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

HSKNDA - Area 5ASite formation 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

YLKTSSD Stage IInstallation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Original)Installation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Alternative)Installation of sewer lines 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

Cumulative Impact from Fixed Sites (1) 50 50 50 50 50 50 50 50 50 50 50 65 66 71 71 71 72 72 72 72 71 71 71 71 71 71 71 71 71 71 71 71 72 72 72 72 72 71 71 71 71 71 71 71 71 71 68 68 68 68 67 63 63 54 54 54

Cumulative Impact from Fixed Sites (2) 50 50 50 50 50 50 50 50 50 50 50 65 66 71 71 71 72 72 72 72 71 71 71 71 71 71 71 71 71 71 71 71 72 72 72 72 72 72 72 72 71 71 71 71 71 71 68 68 68 68 67 63 63 54 54 54

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N16 4 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N17

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60Piling 61 61 61 61 61 61 61 61 61 61Detritors 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Modification of Existing Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Fine Screen Chamber 59 59 59 59 59 59 59 59 59 59Flow Separation Chamber 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Flowmeter Chamber & Flow Equalization Chambe 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Rapid Mixing Tank & Flocculation Tank 61 61 61 61 61 61 61 61 61Primary Sedimentation Tank 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Sludge Buffer Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Centrifuge Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Transfer Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Potable Water Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58Return Liquor Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Dewatering House & Storage Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Chemical Dosing House & Storage Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61UV Substation & Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Admin. Building & Control Room 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Deodourization Unit 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Pipes & Culverts 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55Transformer House 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Landscape works & Establishment works 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Electricity Generators for General Purposes 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43

Alternative 4 Bypass CulvertSite Clearance & Site Formation 76 76 76 76 76 76 76 76 76 76Bulk Excavation for Box Culvert 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77Steel Fixing & Concreting of Box Culvert 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76Reinstatement & Roadworks 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Electricity Generators for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

Construction of DBL alignment 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

HSKNDA - Area 5ASite formation 64 64 64 64 64 64 64 64 64 64 64 64 64Roadworks 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage IInstallation of sewer lines 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

YLKTSSD Stage II (Original)Installation of sewer lines 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

YLKTSSD Stage II (Alternative)Installation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

Cumulative Impact from Fixed Sites (1) 63 63 63 63 63 63 63 63 63 63 63 76 77 80 80 80 82 82 82 82 80 80 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 78 78 78 78 78 72 72 66 66 66

Cumulative Impact from Fixed Sites (2) 63 63 63 63 63 63 63 63 63 63 63 76 77 80 80 80 82 82 82 82 80 80 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 78 78 78 78 78 72 72 66 66 66

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N17 5 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N17

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 52 52 52 52 52 52 52 52 52Piling 61 61 61 61 61 61 61 61 61 61Detritors 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Modification of Existing Facilities 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Fine Screen Chamber 50 50 50 50 50 50 50 50 50 50Flow Separation Chamber 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Flowmeter Chamber & Flow Equalization Chambe 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Rapid Mixing Tank & Flocculation Tank 53 53 53 53 53 53 53 53 53Primary Sedimentation Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Buffer Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Centrifuge Building 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Transfer Pumping Station 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Potable Water Pumping Station 47 47 47 47 47 47 47 47 47 47 47 47 47Return Liquor Pumping Station 47 47 47 47 47 47 47 47 47 47 47 47 47Sludge Dewatering House & Storage Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Chemical Dosing House & Storage Building 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52UV Substation & Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Admin. Building & Control Room 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Deodourization Unit 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 49 49 49 49 49 49 49 49 49 49 49 49 49Transformer House 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Landscape works & Establishment works 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Electricity Generators for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

Alternative 4 Bypass CulvertSite Clearance & Site Formation 67 67 67 67 67 67 67 67 67 67Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Reinstatement & Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Construction of DBL alignment 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

HSKNDA - Area 5ASite formation 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

YLKTSSD Stage IInstallation of sewer lines 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

YLKTSSD Stage II (Original)Installation of sewer lines 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

YLKTSSD Stage II (Alternative)Installation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

Cumulative Impact from Fixed Sites (1) 51 51 51 51 51 51 51 51 51 51 51 67 68 73 73 73 74 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 74 74 74 74 74 73 73 73 73 73 73 73 73 73 69 69 69 69 69 65 65 55 55 55

Cumulative Impact from Fixed Sites (2) 51 51 51 51 51 51 51 51 51 51 51 67 68 73 73 73 74 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 74 74 74 74 74 73 73 73 73 73 73 73 73 73 69 69 69 69 69 65 65 55 55 55

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N17 6 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N31

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Construction of DBL alignment 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

HSKNDA - Area 5ASite formation 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage IInstallation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

YLKTSSD Stage II (Original)Installation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Alternative)Installation of sewer lines 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

Cumulative Impact from Fixed Sites (1) 61 61 61 61 61 61 61 61 61 61 61 73 74 77 77 77 79 79 79 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 75 75 75 75 75 70 70 64 64 64

Cumulative Impact from Fixed Sites (2) 61 61 61 61 61 61 61 61 61 61 61 73 74 77 77 77 79 79 79 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 76 76 75 75 75 70 70 64 64 64

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N31 7 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N31

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39

Construction of DBL alignment 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

HSKNDA - Area 5ASite formation 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage IInstallation of sewer lines 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage II (Original)Installation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Alternative)Installation of sewer lines 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

Cumulative Impact from Fixed Sites (1) 49 49 49 49 49 49 49 49 49 49 49 64 66 70 70 70 71 71 71 71 71 70 70 70 70 70 70 70 70 70 71 70 71 71 71 71 71 71 71 71 71 71 71 71 71 70 67 67 67 67 66 62 62 53 53 53

Cumulative Impact from Fixed Sites (2) 49 49 49 49 49 49 49 49 49 49 49 64 66 70 70 70 71 71 71 71 71 70 70 70 70 70 70 70 70 71 71 70 71 71 71 71 71 71 71 71 71 71 71 71 71 71 67 67 67 67 66 62 62 53 53 53

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N31 8 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N32

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 58 58 58 58 58 58 58 58 58Piling 59 59 59 59 59 59 59 59 59 59Detritors 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Modification of Existing Facilities 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Fine Screen Chamber 57 57 57 57 57 57 57 57 57 57Flow Separation Chamber 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Flowmeter Chamber & Flow Equalization Chambe 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Rapid Mixing Tank & Flocculation Tank 59 59 59 59 59 59 59 59 59Primary Sedimentation Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Buffer Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Centrifuge Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Transfer Pumping Station 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Potable Water Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Return Liquor Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Sludge Dewatering House & Storage Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Chemical Dosing House & Storage Building 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59UV Substation & Facilities 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Admin. Building & Control Room 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Deodourization Unit 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Construction of DBL alignment 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

HSKNDA - Area 5ASite formation 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage IInstallation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Original)Installation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Alternative)Installation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

Cumulative Impact from Fixed Sites (1) 61 61 61 61 61 61 61 61 61 61 61 71 71 75 75 75 76 77 77 77 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 75 75 75 75 73 73 73 73 72 68 68 65 65 65

Cumulative Impact from Fixed Sites (2) 61 61 61 61 61 61 61 61 61 61 61 71 71 75 75 75 76 77 77 77 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 75 75 75 75 73 73 73 73 72 68 68 65 65 65

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N32 9 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N32

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 50 50 50 50 50 50 50 50 50Piling 59 59 59 59 59 59 59 59 59 59Detritors 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Modification of Existing Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Fine Screen Chamber 48 48 48 48 48 48 48 48 48 48Flow Separation Chamber 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Flowmeter Chamber & Flow Equalization Chambe 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Rapid Mixing Tank & Flocculation Tank 51 51 51 51 51 51 51 51 51Primary Sedimentation Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Sludge Buffer Tank 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Centrifuge Building 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Transfer Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Potable Water Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Return Liquor Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Sludge Dewatering House & Storage Tank 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Chemical Dosing House & Storage Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50UV Substation & Facilities 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Admin. Building & Control Room 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Deodourization Unit 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Pipes & Culverts 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Roadworks 47 47 47 47 47 47 47 47 47 47 47 47 47Transformer House 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

Alternative 4 Bypass CulvertSite Clearance & Site Formation 61 61 61 61 61 61 61 61 61 61Bulk Excavation for Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Steel Fixing & Concreting of Box Culvert 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Reinstatement & Roadworks 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Construction of DBL alignment 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

HSKNDA - Area 5ASite formation 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage IInstallation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Original)Installation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Alternative)Installation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

Cumulative Impact from Fixed Sites (1) 49 49 49 49 49 49 49 49 49 49 49 62 64 68 68 68 69 69 69 69 68 68 68 68 68 68 68 68 68 68 68 68 69 69 69 68 68 68 68 68 68 68 68 68 68 68 65 65 65 65 64 61 61 54 54 54

Cumulative Impact from Fixed Sites (2) 49 49 49 49 49 49 49 49 49 49 49 62 64 68 68 68 69 69 69 69 68 68 68 68 68 68 68 68 68 68 68 68 69 69 69 68 68 68 68 68 68 68 68 68 68 68 65 65 65 65 64 61 61 54 54 54

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N32 10 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N33

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Construction of DBL alignment 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59

HSKNDA - Area 5ASite formation 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

YLKTSSD Stage IInstallation of sewer lines 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage II (Original)Installation of sewer lines 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage II (Alternative)Installation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

Cumulative Impact from Fixed Sites (1) 59 59 59 59 59 59 59 59 59 59 59 71 71 74 74 75 76 76 76 76 75 75 75 75 75 75 75 75 75 75 75 75 76 76 76 75 75 75 75 75 75 75 75 75 75 75 73 73 73 73 72 67 67 62 62 62

Cumulative Impact from Fixed Sites (2) 59 59 59 59 59 59 59 59 59 59 59 71 71 74 74 75 76 76 76 76 75 75 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 74 74 74 74 72 67 67 62 62 62

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N33 11 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N33

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 61 61 61 61 61 61 61 61 61 61Bulk Excavation for Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Steel Fixing & Concreting of Box Culvert 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Reinstatement & Roadworks 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Construction of DBL alignment 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

HSKNDA - Area 5ASite formation 54 54 54 54 54 54 54 54 54 54 54 54 54Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage IInstallation of sewer lines 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

YLKTSSD Stage II (Original)Installation of sewer lines 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

YLKTSSD Stage II (Alternative)Installation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

Cumulative Impact from Fixed Sites (1) 47 47 47 47 47 47 47 47 47 47 47 61 63 67 67 67 68 69 69 69 68 67 67 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 64 64 64 64 64 60 60 51 51 51

Cumulative Impact from Fixed Sites (2) 47 47 47 47 47 47 47 47 47 47 47 61 63 67 67 67 68 69 69 69 68 67 68 68 68 68 68 68 68 68 68 68 68 69 69 68 68 68 68 68 68 68 68 68 68 68 65 65 65 65 64 60 60 51 51 51

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N33 12 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N34

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 58 58 58 58 58 58 58 58 58Piling 59 59 59 59 59 59 59 59 59 59Detritors 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Modification of Existing Facilities 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Fine Screen Chamber 57 57 57 57 57 57 57 57 57 57Flow Separation Chamber 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Flowmeter Chamber & Flow Equalization Chambe 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Rapid Mixing Tank & Flocculation Tank 59 59 59 59 59 59 59 59 59Primary Sedimentation Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Buffer Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Centrifuge Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Transfer Pumping Station 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Potable Water Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Return Liquor Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Sludge Dewatering House & Storage Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Chemical Dosing House & Storage Building 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59UV Substation & Facilities 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Admin. Building & Control Room 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Deodourization Unit 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Construction of DBL alignment 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

HSKNDA - Area 5ASite formation 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage IInstallation of sewer lines 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage II (Original)Installation of sewer lines 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage II (Alternative)Installation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

Cumulative Impact from Fixed Sites (1) 60 60 60 60 60 60 60 60 60 60 60 73 74 77 77 77 79 79 79 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 75 75 75 75 75 69 69 63 63 63

Cumulative Impact from Fixed Sites (2) 60 60 60 60 60 60 60 60 60 60 60 73 74 77 77 77 79 79 79 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 76 76 76 76 75 69 69 63 63 63

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N34 13 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N34

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 50 50 50 50 50 50 50 50 50Piling 59 59 59 59 59 59 59 59 59 59Detritors 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Modification of Existing Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Fine Screen Chamber 48 48 48 48 48 48 48 48 48 48Flow Separation Chamber 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Flowmeter Chamber & Flow Equalization Chambe 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Rapid Mixing Tank & Flocculation Tank 51 51 51 51 51 51 51 51 51Primary Sedimentation Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Sludge Buffer Tank 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Centrifuge Building 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Transfer Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Potable Water Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Return Liquor Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Sludge Dewatering House & Storage Tank 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Chemical Dosing House & Storage Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50UV Substation & Facilities 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Admin. Building & Control Room 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Deodourization Unit 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Pipes & Culverts 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Roadworks 47 47 47 47 47 47 47 47 47 47 47 47 47Transformer House 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38

Construction of DBL alignment 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

HSKNDA - Area 5ASite formation 54 54 54 54 54 54 54 54 54 54 54 54 54Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage IInstallation of sewer lines 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage II (Original)Installation of sewer lines 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage II (Alternative)Installation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

Cumulative Impact from Fixed Sites (1) 48 48 48 48 48 48 48 48 48 48 48 64 65 70 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 70 70 70 71 71 71 71 71 70 70 70 70 70 70 70 70 70 67 67 66 66 66 62 62 52 52 52

Cumulative Impact from Fixed Sites (2) 48 48 48 48 48 48 48 48 48 48 48 64 65 70 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 70 70 70 71 71 71 71 71 71 71 71 70 71 70 70 70 70 67 67 67 67 66 62 62 52 52 52

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N34 14 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N35

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 69 69 69 69 69 69 69 69 69 69Bulk Excavation for Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Construction of DBL alignment 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

HSKNDA - Area 5ASite formation 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

YLKTSSD Stage IInstallation of sewer lines 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage II (Original)Installation of sewer lines 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage II (Alternative)Installation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

Cumulative Impact from Fixed Sites (1) 60 60 60 60 60 60 60 60 60 60 60 70 70 74 74 74 75 76 76 76 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 74 74 74 74 74 74 72 72 72 72 71 67 67 63 63 63

Cumulative Impact from Fixed Sites (2) 60 60 60 60 60 60 60 60 60 60 60 70 70 74 74 74 75 76 76 76 74 74 75 75 75 75 75 75 75 75 75 75 75 76 76 75 75 75 75 75 75 75 75 75 75 75 73 73 73 73 71 67 67 63 63 63

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N35 15 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N35

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60 60Bulk Excavation for Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Steel Fixing & Concreting of Box Culvert 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Reinstatement & Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Construction of DBL alignment 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

HSKNDA - Area 5ASite formation 54 54 54 54 54 54 54 54 54 54 54 54 54Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage IInstallation of sewer lines 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage II (Original)Installation of sewer lines 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage II (Alternative)Installation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

Cumulative Impact from Fixed Sites (1) 48 48 48 48 48 48 48 48 48 48 48 61 63 67 67 67 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 67 68 68 67 67 67 67 67 67 67 67 67 67 67 64 64 64 64 63 60 60 52 52 52

Cumulative Impact from Fixed Sites (2) 48 48 48 48 48 48 48 48 48 48 48 61 63 67 67 67 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 68 68 68 68 67 67 67 67 67 67 67 67 67 67 64 64 64 64 63 60 60 52 52 52

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N35 16 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N36

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 69 69 69 69 69 69 69 69 69 69Bulk Excavation for Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Construction of DBL alignment 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

HSKNDA - Area 5ASite formation 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

YLKTSSD Stage IInstallation of sewer lines 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

YLKTSSD Stage II (Original)Installation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

YLKTSSD Stage II (Alternative)Installation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

Cumulative Impact from Fixed Sites (1) 60 60 60 60 60 60 60 60 60 60 60 70 70 74 74 74 75 76 76 76 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 74 74 74 74 74 74 72 72 72 72 71 67 67 63 63 63

Cumulative Impact from Fixed Sites (2) 60 60 60 60 60 60 60 60 60 60 60 70 70 74 74 74 75 76 76 76 74 74 75 75 75 75 75 75 75 75 75 75 75 76 76 75 75 75 75 75 75 75 75 75 75 75 73 73 73 73 71 67 67 63 63 63

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N36 17 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N36

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60 60Bulk Excavation for Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Steel Fixing & Concreting of Box Culvert 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Reinstatement & Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Construction of DBL alignment 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

HSKNDA - Area 5ASite formation 55 55 55 55 55 55 55 55 55 55 55 55 55Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage IInstallation of sewer lines 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage II (Original)Installation of sewer lines 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage II (Alternative)Installation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

Cumulative Impact from Fixed Sites (1) 48 48 48 48 48 48 48 48 48 48 48 61 63 67 67 67 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 68 68 68 67 67 67 67 67 67 67 67 67 67 67 64 64 64 64 63 60 60 52 52 52

Cumulative Impact from Fixed Sites (2) 48 48 48 48 48 48 48 48 48 48 48 61 63 67 67 67 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 68 68 68 68 68 67 67 67 67 67 67 67 67 67 64 64 64 64 63 60 60 52 52 52

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2003 2004 2005 2006 20082007

App 4A4 Cumulative Impact for San Wai STW.xls - N36 18 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N37

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63Piling 64 64 64 64 64 64 64 64 64 64Detritors 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Modification of Existing Facilities 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Fine Screen Chamber 62 62 62 62 62 62 62 62 62 62Flow Separation Chamber 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Flowmeter Chamber & Flow Equalization Chambe 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Rapid Mixing Tank & Flocculation Tank 64 64 64 64 64 64 64 64 64Primary Sedimentation Tank 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Sludge Buffer Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Centrifuge Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Transfer Pumping Station 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Potable Water Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Return Liquor Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Dewatering House & Storage Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Chemical Dosing House & Storage Building 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64UV Substation & Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Admin. Building & Control Room 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Deodourization Unit 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Pipes & Culverts 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58Transformer House 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Construction of DBL alignment 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

HSKNDA - Area 5ASite formation 65 65 65 65 65 65 65 65 65 65 65 65 65Roadworks 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70

YLKTSSD Stage IInstallation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

YLKTSSD Stage II (Original)Installation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

YLKTSSD Stage II (Alternative)Installation of sewer lines 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73

Cumulative Impact from Fixed Sites (1) 65 65 65 65 65 65 65 65 65 65 65 74 75 78 78 78 79 80 80 80 79 79 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79 79 79 79 79 79 79 79 79 77 77 77 77 76 71 71 67 67 67

Cumulative Impact from Fixed Sites (2) 65 65 65 65 65 65 65 65 65 65 65 74 75 78 78 78 79 80 80 80 79 79 80 80 80 80 80 80 80 80 80 80 80 81 81 80 80 80 80 80 79 80 79 79 79 79 78 78 78 78 76 71 71 67 67 67

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N37 19 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N37

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 55 55 55 55 55 55 55 55 55Piling 64 64 64 64 64 64 64 64 64 64Detritors 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Modification of Existing Facilities 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Fine Screen Chamber 53 53 53 53 53 53 53 53 53 53Flow Separation Chamber 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Flowmeter Chamber & Flow Equalization Chambe 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Rapid Mixing Tank & Flocculation Tank 56 56 56 56 56 56 56 56 56Primary Sedimentation Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Buffer Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Centrifuge Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Transfer Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Potable Water Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Return Liquor Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Sludge Dewatering House & Storage Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Chemical Dosing House & Storage Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55UV Substation & Facilities 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Admin. Building & Control Room 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Deodourization Unit 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Pipes & Culverts 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39

Construction of DBL alignment 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

HSKNDA - Area 5ASite formation 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

YLKTSSD Stage IInstallation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

YLKTSSD Stage II (Original)Installation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

YLKTSSD Stage II (Alternative)Installation of sewer lines 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

Cumulative Impact from Fixed Sites (1) 53 53 53 53 53 53 53 53 53 53 53 65 68 71 71 71 72 73 73 73 72 71 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 71 71 71 71 71 71 68 68 68 68 68 65 65 56 56 56

Cumulative Impact from Fixed Sites (2) 53 53 53 53 53 53 53 53 53 53 53 65 68 71 71 71 72 73 73 73 72 71 72 72 72 72 72 72 72 72 72 72 73 73 73 72 72 72 72 72 72 72 72 72 72 72 69 69 69 69 68 65 65 56 56 56

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

200820072005 20062003 2004

App 4A4 Cumulative Impact for San Wai STW.xls - N37 20 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N38

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64Piling 65 65 65 65 65 65 65 65 65 65Detritors 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Modification of Existing Facilities 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Fine Screen Chamber 63 63 63 63 63 63 63 63 63 63Flow Separation Chamber 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Flowmeter Chamber & Flow Equalization Chambe 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Rapid Mixing Tank & Flocculation Tank 65 65 65 65 65 65 65 65 65Primary Sedimentation Tank 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Sludge Buffer Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Centrifuge Building 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Transfer Pumping Station 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Potable Water Pumping Station 62 62 62 62 62 62 62 62 62 62 62 62 62Return Liquor Pumping Station 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Dewatering House & Storage Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Chemical Dosing House & Storage Building 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65UV Substation & Facilities 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Admin. Building & Control Room 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Deodourization Unit 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Pipes & Culverts 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59Transformer House 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Landscape works & Establishment works 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Alternative 4 Bypass CulvertSite Clearance & Site Formation 74 74 74 74 74 74 74 74 74 74Bulk Excavation for Box Culvert 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75Steel Fixing & Concreting of Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Reinstatement & Roadworks 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Electricity Generators for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

Construction of DBL alignment 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

HSKNDA - Area 5ASite formation 66 66 66 66 66 66 66 66 66 66 66 66 66Roadworks 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72

YLKTSSD Stage IInstallation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage II (Original)Installation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage II (Alternative)Installation of sewer lines 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73

Cumulative Impact from Fixed Sites (1) 66 66 66 66 66 66 66 66 66 66 66 75 76 79 79 79 80 82 82 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 80 80 80 80 80 80 80 80 80 78 78 78 78 77 73 73 69 69 69

Cumulative Impact from Fixed Sites (2) 66 66 66 66 66 66 66 66 66 66 66 75 76 79 79 79 80 82 82 81 81 81 81 81 81 81 81 81 81 81 81 81 81 82 82 81 81 81 81 81 80 80 80 80 80 80 79 79 78 78 77 73 73 69 69 69

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N38 21 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N38

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 56 56 56 56 56 56 56 56 56Piling 65 65 65 65 65 65 65 65 65 65Detritors 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Modification of Existing Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Fine Screen Chamber 54 54 54 54 54 54 54 54 54 54Flow Separation Chamber 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Flowmeter Chamber & Flow Equalization Chambe 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Rapid Mixing Tank & Flocculation Tank 57 57 57 57 57 57 57 57 57Primary Sedimentation Tank 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Transfer Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Potable Water Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51Return Liquor Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51Sludge Dewatering House & Storage Tank 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Chemical Dosing House & Storage Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56UV Substation & Facilities 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Pipes & Culverts 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Landscape works & Establishment works 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Alternative 4 Bypass CulvertSite Clearance & Site Formation 65 65 65 65 65 65 65 65 65 65Bulk Excavation for Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Reinstatement & Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Construction of DBL alignment 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

HSKNDA - Area 5ASite formation 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

YLKTSSD Stage IInstallation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

YLKTSSD Stage II (Original)Installation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

YLKTSSD Stage II (Alternative)Installation of sewer lines 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62

Cumulative Impact from Fixed Sites (1) 54 54 54 54 54 54 54 54 54 54 54 66 69 72 72 72 73 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 73 74 74 73 73 73 73 73 72 72 72 72 72 72 69 69 69 69 69 66 66 58 58 58

Cumulative Impact from Fixed Sites (2) 54 54 54 54 54 54 54 54 54 54 54 66 69 72 72 72 73 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 74 74 74 73 73 73 73 73 73 73 73 73 73 72 70 70 70 70 69 66 66 58 58 58

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N38 22 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N39

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 62 62 62 62 62 62 62 62 62Piling 63 63 63 63 63 63 63 63 63 63Detritors 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Modification of Existing Facilities 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Fine Screen Chamber 61 61 61 61 61 61 61 61 61 61Flow Separation Chamber 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Flowmeter Chamber & Flow Equalization Chambe 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Rapid Mixing Tank & Flocculation Tank 63 63 63 63 63 63 63 63 63Primary Sedimentation Tank 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Sludge Buffer Tank 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Centrifuge Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Transfer Pumping Station 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Potable Water Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60Return Liquor Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60Sludge Dewatering House & Storage Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Chemical Dosing House & Storage Building 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63UV Substation & Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Admin. Building & Control Room 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Deodourization Unit 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Pipes & Culverts 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Roadworks 57 57 57 57 57 57 57 57 57 57 57 57 57Transformer House 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Landscape works & Establishment works 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Electricity Generators for General Purposes 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45

Alternative 4 Bypass CulvertSite Clearance & Site Formation 72 72 72 72 72 72 72 72 72 72Bulk Excavation for Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Box Culvert 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72Reinstatement & Roadworks 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Electricity Generators for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

Construction of DBL alignment 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

HSKNDA - Area 5ASite formation 66 66 66 66 66 66 66 66 66 66 66 66 66Roadworks 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage IInstallation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

YLKTSSD Stage II (Original)Installation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

YLKTSSD Stage II (Alternative)Installation of sewer lines 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70

Cumulative Impact from Fixed Sites (1) 65 65 65 65 65 65 65 65 65 65 65 73 74 77 77 77 79 80 80 79 79 78 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 78 78 78 78 78 78 76 76 76 76 75 71 71 68 68 68

Cumulative Impact from Fixed Sites (2) 65 65 65 65 65 65 65 65 65 65 65 73 74 77 77 77 79 80 80 79 79 78 79 79 79 79 79 79 79 79 79 79 79 80 80 79 79 79 79 79 78 78 78 78 78 78 76 76 76 76 75 71 71 68 68 68

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N39 23 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N39

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 54 54 54 54 54 54 54 54 54Piling 63 63 63 63 63 63 63 63 63 63Detritors 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Modification of Existing Facilities 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Fine Screen Chamber 52 52 52 52 52 52 52 52 52 52Flow Separation Chamber 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Flowmeter Chamber & Flow Equalization Chambe 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Rapid Mixing Tank & Flocculation Tank 55 55 55 55 55 55 55 55 55Primary Sedimentation Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Buffer Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Centrifuge Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Transfer Pumping Station 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Potable Water Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49Return Liquor Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49Sludge Dewatering House & Storage Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Chemical Dosing House & Storage Building 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54UV Substation & Facilities 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Admin. Building & Control Room 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Deodourization Unit 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Pipes & Culverts 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 51 51 51 51 51 51 51 51 51 51 51 51 51Transformer House 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Landscape works & Establishment works 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Electricity Generators for General Purposes 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34

Alternative 4 Bypass CulvertSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63 63Bulk Excavation for Box Culvert 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Steel Fixing & Concreting of Box Culvert 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Reinstatement & Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Electricity Generators for General Purposes 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38

Construction of DBL alignment 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

HSKNDA - Area 5ASite formation 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

YLKTSSD Stage IInstallation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

YLKTSSD Stage II (Original)Installation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

YLKTSSD Stage II (Alternative)Installation of sewer lines 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59

Cumulative Impact from Fixed Sites (1) 53 53 53 53 53 53 53 53 53 53 53 64 67 70 70 70 71 72 72 72 71 70 71 71 71 71 71 71 71 71 71 71 72 72 72 71 71 71 71 71 70 70 70 70 70 70 68 68 68 68 67 64 64 57 57 57

Cumulative Impact from Fixed Sites (2) 53 53 53 53 53 53 53 53 53 53 53 64 67 70 70 70 71 72 72 72 71 70 71 71 71 71 71 71 71 71 71 71 72 72 72 71 71 71 71 71 71 71 71 71 71 70 68 68 68 68 67 64 64 57 57 57

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N39 24 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N40

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63Piling 64 64 64 64 64 64 64 64 64 64Detritors 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Modification of Existing Facilities 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Fine Screen Chamber 62 62 62 62 62 62 62 62 62 62Flow Separation Chamber 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Flowmeter Chamber & Flow Equalization Chambe 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Rapid Mixing Tank & Flocculation Tank 64 64 64 64 64 64 64 64 64Primary Sedimentation Tank 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Sludge Buffer Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Centrifuge Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Transfer Pumping Station 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Potable Water Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Return Liquor Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Dewatering House & Storage Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Chemical Dosing House & Storage Building 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64UV Substation & Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Admin. Building & Control Room 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Deodourization Unit 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Pipes & Culverts 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58Transformer House 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Alternative 4 Bypass CulvertSite Clearance & Site Formation 86 86 86 86 86 86 86 86 86 86Bulk Excavation for Box Culvert 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86Steel Fixing & Concreting of Box Culvert 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86Reinstatement & Roadworks 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81Electricity Generators for General Purposes 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Maximum at each month (3) 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 82 82

Construction of DBL alignment 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

HSKNDA - Area 5ASite formation 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75

YLKTSSD Stage IInstallation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Original)Installation of sewer lines 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65

YLKTSSD Stage II (Alternative)Installation of sewer lines 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80

Cumulative Impact from Fixed Sites (1) 64 64 64 64 64 64 64 64 64 64 64 87 87 87 87 87 87 88 88 88 88 87 88 88 88 88 88 88 88 88 88 88 88 88 88 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 82 82 65 65 65

Cumulative Impact from Fixed Sites (2) 64 64 64 64 64 64 64 64 64 64 64 87 87 87 87 87 87 88 88 88 88 87 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 87 82 82 65 65 65

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option (3) activities of bypass culvert construction will not work concurrently at any moment

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N40 25 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N40

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 55 55 55 55 55 55 55 55 55Piling 64 64 64 64 64 64 64 64 64 64Detritors 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Modification of Existing Facilities 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Fine Screen Chamber 53 53 53 53 53 53 53 53 53 53Flow Separation Chamber 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Flowmeter Chamber & Flow Equalization Chambe 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Rapid Mixing Tank & Flocculation Tank 56 56 56 56 56 56 56 56 56Primary Sedimentation Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Buffer Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Centrifuge Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Transfer Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Potable Water Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Return Liquor Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Sludge Dewatering House & Storage Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Chemical Dosing House & Storage Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55UV Substation & Facilities 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Admin. Building & Control Room 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Deodourization Unit 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Pipes & Culverts 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Alternative 4 Bypass CulvertSite Clearance & Site Formation 67 67 67 67 67 67 67 67 67 67Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Maximum at each month (3) 68 68 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 70 70 70 70 70 68 68

Construction of DBL alignment 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

HSKNDA - Area 5ASite formation 55 55 55 55 55 55 55 55 55 55 55 55 55Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

YLKTSSD Stage IInstallation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Original)Installation of sewer lines 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54

YLKTSSD Stage II (Alternative)Installation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

Cumulative Impact from Fixed Sites (1) 52 52 52 52 52 52 52 52 52 52 52 68 70 73 73 73 73 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 73 73 73 73 73 73 71 71 71 71 71 69 69 54 54 54

Cumulative Impact from Fixed Sites (2) 52 52 52 52 52 52 52 52 52 52 52 68 70 73 73 73 73 74 74 74 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 74 74 74 74 74 74 73 73 73 73 71 69 69 54 54 54

Note: (1) with YLKTSSD Stage II Original Option (2) with YLKTSSD Stage II Alternative Option (3) activities of bypass culvert construction will not work concurrently at any moment

2007 20082003 2004 2005 2006

App 4A4 Cumulative Impact for San Wai STW.xls - N40 26 08-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N15

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 79 79 79 79 79 79 79 79 79 79Bulk Excavation for Box Culvert 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80Steel Fixing & Concreting of Box Culvert 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79Reinstatement & Roadworks 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Electricity Generators for General Purposes 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Maximum at each month (3) 79 79 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79 79 79 79 79 73 73

Noise Impact from Fixed Sites 79 79 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79 79 79 79 79 73 73

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N15 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N15

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Electricity Generators for General Purposes 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Maximum at each month (3) 70 70 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 70 70 70 70 70 65 65

Noise Impact from Fixed Sites 70 70 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 70 70 70 70 70 66 66

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N15 2 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N16

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 74 74 74 74 74 74 74 74 74 74Bulk Excavation for Box Culvert 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75Steel Fixing & Concreting of Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Reinstatement & Roadworks 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Electricity Generators for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

Noise Impact from Fixed Sites 74 74 78 78 78 79 80 80 80 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 78 78 78 78 78 78 78 78 78 78 78 76 76 75 75 75 69 69

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N16 3 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N16

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 65 65 65 65 65 65 65 65 65 65Bulk Excavation for Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Reinstatement & Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Noise Impact from Fixed Sites 65 66 71 71 71 72 72 72 72 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 67 67 67 67 67 62 62

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N16 4 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N17

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60Piling 61 61 61 61 61 61 61 61 61 61Detritors 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Modification of Existing Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Fine Screen Chamber 59 59 59 59 59 59 59 59 59 59Flow Separation Chamber 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Flowmeter Chamber & Flow Equalization Chambe 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Rapid Mixing Tank & Flocculation Tank 61 61 61 61 61 61 61 61 61Primary Sedimentation Tank 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Sludge Buffer Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Centrifuge Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Transfer Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Potable Water Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58Return Liquor Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Dewatering House & Storage Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Chemical Dosing House & Storage Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61UV Substation & Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Admin. Building & Control Room 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Deodourization Unit 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Pipes & Culverts 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55Transformer House 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Landscape works & Establishment works 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Electricity Generators for General Purposes 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43

Alternative 4 Bypass CulvertSite Clearance & Site Formation 76 76 76 76 76 76 76 76 76 76Bulk Excavation for Box Culvert 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77Steel Fixing & Concreting of Box Culvert 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76Reinstatement & Roadworks 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Electricity Generators for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

Noise Impact from Fixed Sites 76 76 80 80 80 81 82 82 82 80 80 80 80 80 80 80 80 80 80 80 80 80 81 81 80 80 80 80 80 80 80 80 80 80 80 77 77 77 77 77 71 71

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N17 5 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N17

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 52 52 52 52 52 52 52 52 52Piling 61 61 61 61 61 61 61 61 61 61Detritors 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Modification of Existing Facilities 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Fine Screen Chamber 50 50 50 50 50 50 50 50 50 50Flow Separation Chamber 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Flowmeter Chamber & Flow Equalization Chambe 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Rapid Mixing Tank & Flocculation Tank 53 53 53 53 53 53 53 53 53Primary Sedimentation Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Buffer Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Centrifuge Building 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Transfer Pumping Station 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Potable Water Pumping Station 47 47 47 47 47 47 47 47 47 47 47 47 47Return Liquor Pumping Station 47 47 47 47 47 47 47 47 47 47 47 47 47Sludge Dewatering House & Storage Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Chemical Dosing House & Storage Building 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52UV Substation & Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Admin. Building & Control Room 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Deodourization Unit 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 49 49 49 49 49 49 49 49 49 49 49 49 49Transformer House 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Landscape works & Establishment works 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Electricity Generators for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

Alternative 4 Bypass CulvertSite Clearance & Site Formation 67 67 67 67 67 67 67 67 67 67Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Reinstatement & Roadworks 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Noise Impact from Fixed Sites 67 68 73 73 73 74 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 69 69 69 69 69 64 64

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N17 6 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N31

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 59 59 59 59 59 59 59 59 59Piling 60 60 60 60 60 60 60 60 60 60Detritors 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Modification of Existing Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Fine Screen Chamber 58 58 58 58 58 58 58 58 58 58Flow Separation Chamber 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Flowmeter Chamber & Flow Equalization Chambe 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Rapid Mixing Tank & Flocculation Tank 60 60 60 60 60 60 60 60 60Primary Sedimentation Tank 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Sludge Buffer Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Centrifuge Building 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Transfer Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Potable Water Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Return Liquor Pumping Station 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Dewatering House & Storage Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Chemical Dosing House & Storage Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60UV Substation & Facilities 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Admin. Building & Control Room 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Deodourization Unit 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Pipes & Culverts 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Roadworks 54 54 54 54 54 54 54 54 54 54 54 54 54Transformer House 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Noise Impact from Fixed Sites 73 73 77 77 77 78 79 79 79 77 77 77 77 77 77 77 77 77 77 77 77 78 78 78 78 78 77 77 77 77 77 77 77 77 77 75 75 75 75 74 68 68

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N31 7 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N31

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 51 51 51 51 51 51 51 51 51Piling 60 60 60 60 60 60 60 60 60 60Detritors 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Modification of Existing Facilities 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Fine Screen Chamber 49 49 49 49 49 49 49 49 49 49Flow Separation Chamber 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Flowmeter Chamber & Flow Equalization Chambe 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Rapid Mixing Tank & Flocculation Tank 52 52 52 52 52 52 52 52 52Primary Sedimentation Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Sludge Buffer Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Centrifuge Building 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Transfer Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Potable Water Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Return Liquor Pumping Station 46 46 46 46 46 46 46 46 46 46 46 46 46Sludge Dewatering House & Storage Tank 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Chemical Dosing House & Storage Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51UV Substation & Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Admin. Building & Control Room 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Deodourization Unit 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 48 48 48 48 48 48 48 48 48 48 48 48 48Transformer House 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46Landscape works & Establishment works 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Electricity Generators for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39

Noise Impact from Fixed Sites 64 66 70 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 70 70 70 70 71 71 70 70 70 70 70 70 70 70 70 70 70 66 66 66 66 66 62 62

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N31 8 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N32

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 58 58 58 58 58 58 58 58 58Piling 59 59 59 59 59 59 59 59 59 59Detritors 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Modification of Existing Facilities 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Fine Screen Chamber 57 57 57 57 57 57 57 57 57 57Flow Separation Chamber 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Flowmeter Chamber & Flow Equalization Chambe 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Rapid Mixing Tank & Flocculation Tank 59 59 59 59 59 59 59 59 59Primary Sedimentation Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Buffer Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Centrifuge Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Transfer Pumping Station 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Potable Water Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Return Liquor Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Sludge Dewatering House & Storage Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Chemical Dosing House & Storage Building 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59UV Substation & Facilities 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Admin. Building & Control Room 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Deodourization Unit 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Noise Impact from Fixed Sites 70 71 74 74 74 76 76 76 76 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 72 72 72 72 72 66 66

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N32 9 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N32

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 50 50 50 50 50 50 50 50 50Piling 59 59 59 59 59 59 59 59 59 59Detritors 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Modification of Existing Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Fine Screen Chamber 48 48 48 48 48 48 48 48 48 48Flow Separation Chamber 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Flowmeter Chamber & Flow Equalization Chambe 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Rapid Mixing Tank & Flocculation Tank 51 51 51 51 51 51 51 51 51Primary Sedimentation Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Sludge Buffer Tank 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Centrifuge Building 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Transfer Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Potable Water Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Return Liquor Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Sludge Dewatering House & Storage Tank 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Chemical Dosing House & Storage Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50UV Substation & Facilities 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Admin. Building & Control Room 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Deodourization Unit 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Pipes & Culverts 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Roadworks 47 47 47 47 47 47 47 47 47 47 47 47 47Transformer House 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

Alternative 4 Bypass CulvertSite Clearance & Site Formation 61 61 61 61 61 61 61 61 61 61Bulk Excavation for Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Steel Fixing & Concreting of Box Culvert 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Reinstatement & Roadworks 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Noise Impact from Fixed Sites 61 63 67 67 67 68 69 69 69 68 67 67 67 67 67 67 67 67 67 67 67 68 68 68 68 68 68 68 68 68 68 68 68 68 68 64 64 64 64 64 60 60

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N32 10 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N33

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 70 70 70 70 70 70 70 70 70 70Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Reinstatement & Roadworks 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Noise Impact from Fixed Sites 70 71 74 74 74 76 76 76 76 75 74 74 75 75 74 74 74 74 75 75 74 75 75 75 75 75 75 75 75 75 75 75 75 75 74 72 72 72 72 72 65 65

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N33 11 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N33

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 61 61 61 61 61 61 61 61 61 61Bulk Excavation for Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Steel Fixing & Concreting of Box Culvert 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Reinstatement & Roadworks 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Noise Impact from Fixed Sites 61 63 67 67 67 68 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 68 68 68 68 68 67 67 67 67 67 67 67 67 67 64 64 64 64 64 59 59

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N33 12 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N34

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 58 58 58 58 58 58 58 58 58Piling 59 59 59 59 59 59 59 59 59 59Detritors 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Modification of Existing Facilities 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Fine Screen Chamber 57 57 57 57 57 57 57 57 57 57Flow Separation Chamber 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Flowmeter Chamber & Flow Equalization Chambe 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Rapid Mixing Tank & Flocculation Tank 59 59 59 59 59 59 59 59 59Primary Sedimentation Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Buffer Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Centrifuge Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Transfer Pumping Station 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Potable Water Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Return Liquor Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56Sludge Dewatering House & Storage Tank 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Chemical Dosing House & Storage Building 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59UV Substation & Facilities 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Admin. Building & Control Room 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Deodourization Unit 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Pipes & Culverts 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Noise Impact from Fixed Sites 73 73 77 77 77 78 79 79 79 77 77 77 77 77 77 77 77 77 77 77 77 78 78 78 77 77 77 77 77 77 77 77 77 77 77 75 75 74 74 74 68 68

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N34 13 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N34

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 50 50 50 50 50 50 50 50 50Piling 59 59 59 59 59 59 59 59 59 59Detritors 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Modification of Existing Facilities 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Fine Screen Chamber 48 48 48 48 48 48 48 48 48 48Flow Separation Chamber 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Flowmeter Chamber & Flow Equalization Chambe 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Rapid Mixing Tank & Flocculation Tank 51 51 51 51 51 51 51 51 51Primary Sedimentation Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Sludge Buffer Tank 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Centrifuge Building 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Transfer Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Potable Water Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Return Liquor Pumping Station 45 45 45 45 45 45 45 45 45 45 45 45 45Sludge Dewatering House & Storage Tank 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Chemical Dosing House & Storage Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50UV Substation & Facilities 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Admin. Building & Control Room 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Deodourization Unit 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Pipes & Culverts 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Roadworks 47 47 47 47 47 47 47 47 47 47 47 47 47Transformer House 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45Landscape works & Establishment works 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Electricity Generators for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38

Noise Impact from Fixed Sites 64 65 70 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 66 66 66 66 66 61 61

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N34 14 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N35

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 69 69 69 69 69 69 69 69 69 69Bulk Excavation for Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Noise Impact from Fixed Sites 69 70 73 73 73 75 75 75 75 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 71 71 71 71 71 65 65

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N35 15 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N35

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60 60Bulk Excavation for Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Steel Fixing & Concreting of Box Culvert 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Reinstatement & Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Noise Impact from Fixed Sites 60 62 66 66 66 67 68 68 68 67 66 66 66 66 66 66 66 66 66 66 66 67 67 67 67 67 67 67 67 67 67 67 67 67 67 63 63 63 63 63 59 59

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N35 16 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N36

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 57 57 57 57 57 57 57 57 57Piling 58 58 58 58 58 58 58 58 58 58Detritors 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Modification of Existing Facilities 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Fine Screen Chamber 56 56 56 56 56 56 56 56 56 56Flow Separation Chamber 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Flowmeter Chamber & Flow Equalization Chambe 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Rapid Mixing Tank & Flocculation Tank 58 58 58 58 58 58 58 58 58Primary Sedimentation Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Transfer Pumping Station 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Potable Water Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Return Liquor Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55Sludge Dewatering House & Storage Tank 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Chemical Dosing House & Storage Building 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58UV Substation & Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Pipes & Culverts 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Alternative 4 Bypass CulvertSite Clearance & Site Formation 69 69 69 69 69 69 69 69 69 69Bulk Excavation for Box Culvert 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Noise Impact from Fixed Sites 69 70 73 73 73 75 75 75 75 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 71 71 71 71 71 65 65

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N36 17 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N36

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 49 49 49 49 49 49 49 49 49Piling 58 58 58 58 58 58 58 58 58 58Detritors 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Modification of Existing Facilities 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Fine Screen Chamber 47 47 47 47 47 47 47 47 47 47Flow Separation Chamber 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Flowmeter Chamber & Flow Equalization Chambe 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Rapid Mixing Tank & Flocculation Tank 50 50 50 50 50 50 50 50 50Primary Sedimentation Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Sludge Buffer Tank 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Centrifuge Building 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Transfer Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Potable Water Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Return Liquor Pumping Station 44 44 44 44 44 44 44 44 44 44 44 44 44Sludge Dewatering House & Storage Tank 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Chemical Dosing House & Storage Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49UV Substation & Facilities 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Admin. Building & Control Room 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Deodourization Unit 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Pipes & Culverts 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Roadworks 46 46 46 46 46 46 46 46 46 46 46 46 46Transformer House 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44Landscape works & Establishment works 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42Electricity Generators for General Purposes 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

Alternative 4 Bypass CulvertSite Clearance & Site Formation 60 60 60 60 60 60 60 60 60 60Bulk Excavation for Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Steel Fixing & Concreting of Box Culvert 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Reinstatement & Roadworks 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Noise Impact from Fixed Sites 60 62 66 66 66 67 68 68 68 67 66 66 66 66 66 66 66 66 66 66 66 67 67 67 67 67 67 67 67 67 67 67 67 67 67 63 63 63 63 63 59 59

2004 2005 2006 20082007

App 4A5 Noise Impact for San Wai STW.xls - N36 18 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N37

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63Piling 64 64 64 64 64 64 64 64 64 64Detritors 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Modification of Existing Facilities 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Fine Screen Chamber 62 62 62 62 62 62 62 62 62 62Flow Separation Chamber 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Flowmeter Chamber & Flow Equalization Chambe 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Rapid Mixing Tank & Flocculation Tank 64 64 64 64 64 64 64 64 64Primary Sedimentation Tank 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Sludge Buffer Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Centrifuge Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Transfer Pumping Station 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Potable Water Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Return Liquor Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Dewatering House & Storage Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Chemical Dosing House & Storage Building 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64UV Substation & Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Admin. Building & Control Room 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Deodourization Unit 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Pipes & Culverts 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58Transformer House 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Alternative 4 Bypass CulvertSite Clearance & Site Formation 73 73 73 73 73 73 73 73 73 73Bulk Excavation for Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Noise Impact from Fixed Sites 73 74 77 77 78 79 80 80 80 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 78 78 78 78 78 78 78 78 78 78 78 75 75 75 75 75 69 69

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N37 19 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N37

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 55 55 55 55 55 55 55 55 55Piling 64 64 64 64 64 64 64 64 64 64Detritors 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Modification of Existing Facilities 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Fine Screen Chamber 53 53 53 53 53 53 53 53 53 53Flow Separation Chamber 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Flowmeter Chamber & Flow Equalization Chambe 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Rapid Mixing Tank & Flocculation Tank 56 56 56 56 56 56 56 56 56Primary Sedimentation Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Buffer Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Centrifuge Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Transfer Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Potable Water Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Return Liquor Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Sludge Dewatering House & Storage Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Chemical Dosing House & Storage Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55UV Substation & Facilities 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Admin. Building & Control Room 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Deodourization Unit 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Pipes & Culverts 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Alternative 4 Bypass CulvertSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64 64Bulk Excavation for Box Culvert 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Box Culvert 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Reinstatement & Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Electricity Generators for General Purposes 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39

Noise Impact from Fixed Sites 65 67 71 71 71 72 72 72 72 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 68 68 68 68 67 64 64

200820072004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N37 20 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N38

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 64 64 64 64 64 64 64 64 64Piling 65 65 65 65 65 65 65 65 65 65Detritors 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Modification of Existing Facilities 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Fine Screen Chamber 63 63 63 63 63 63 63 63 63 63Flow Separation Chamber 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Flowmeter Chamber & Flow Equalization Chambe 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Rapid Mixing Tank & Flocculation Tank 65 65 65 65 65 65 65 65 65Primary Sedimentation Tank 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Sludge Buffer Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Centrifuge Building 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Transfer Pumping Station 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Potable Water Pumping Station 62 62 62 62 62 62 62 62 62 62 62 62 62Return Liquor Pumping Station 62 62 62 62 62 62 62 62 62 62 62 62 62Sludge Dewatering House & Storage Tank 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Chemical Dosing House & Storage Building 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65UV Substation & Facilities 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Admin. Building & Control Room 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Deodourization Unit 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Pipes & Culverts 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Roadworks 59 59 59 59 59 59 59 59 59 59 59 59 59Transformer House 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Landscape works & Establishment works 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Electricity Generators for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Alternative 4 Bypass CulvertSite Clearance & Site Formation 74 74 74 74 74 74 74 74 74 74Bulk Excavation for Box Culvert 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75Steel Fixing & Concreting of Box Culvert 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74Reinstatement & Roadworks 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68Electricity Generators for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

Noise Impact from Fixed Sites 74 75 78 78 79 80 81 81 81 79 79 79 79 79 79 79 79 79 79 79 79 80 80 80 79 79 79 79 79 79 79 79 79 79 79 76 76 76 76 76 70 70

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N38 21 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N38

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 56 56 56 56 56 56 56 56 56Piling 65 65 65 65 65 65 65 65 65 65Detritors 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Modification of Existing Facilities 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Fine Screen Chamber 54 54 54 54 54 54 54 54 54 54Flow Separation Chamber 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Flowmeter Chamber & Flow Equalization Chambe 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Rapid Mixing Tank & Flocculation Tank 57 57 57 57 57 57 57 57 57Primary Sedimentation Tank 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Sludge Buffer Tank 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Centrifuge Building 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Transfer Pumping Station 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Potable Water Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51Return Liquor Pumping Station 51 51 51 51 51 51 51 51 51 51 51 51 51Sludge Dewatering House & Storage Tank 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Chemical Dosing House & Storage Building 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56UV Substation & Facilities 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Admin. Building & Control Room 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Deodourization Unit 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Pipes & Culverts 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Roadworks 53 53 53 53 53 53 53 53 53 53 53 53 53Transformer House 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51Landscape works & Establishment works 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Electricity Generators for General Purposes 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36

Alternative 4 Bypass CulvertSite Clearance & Site Formation 65 65 65 65 65 65 65 65 65 65Bulk Excavation for Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Box Culvert 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Reinstatement & Roadworks 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Electricity Generators for General Purposes 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Noise Impact from Fixed Sites 66 68 72 72 72 73 73 73 73 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 69 69 69 69 68 65 65

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N38 22 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N39

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 62 62 62 62 62 62 62 62 62Piling 63 63 63 63 63 63 63 63 63 63Detritors 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Modification of Existing Facilities 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Fine Screen Chamber 61 61 61 61 61 61 61 61 61 61Flow Separation Chamber 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Flowmeter Chamber & Flow Equalization Chambe 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Rapid Mixing Tank & Flocculation Tank 63 63 63 63 63 63 63 63 63Primary Sedimentation Tank 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Sludge Buffer Tank 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Centrifuge Building 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Transfer Pumping Station 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Potable Water Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60Return Liquor Pumping Station 60 60 60 60 60 60 60 60 60 60 60 60 60Sludge Dewatering House & Storage Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Chemical Dosing House & Storage Building 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63UV Substation & Facilities 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Admin. Building & Control Room 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Deodourization Unit 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Pipes & Culverts 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Roadworks 57 57 57 57 57 57 57 57 57 57 57 57 57Transformer House 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59Landscape works & Establishment works 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Electricity Generators for General Purposes 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45

Alternative 4 Bypass CulvertSite Clearance & Site Formation 72 72 72 72 72 72 72 72 72 72Bulk Excavation for Box Culvert 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Box Culvert 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72Reinstatement & Roadworks 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66Electricity Generators for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

Noise Impact from Fixed Sites 72 73 76 76 77 78 79 79 79 77 77 77 77 77 77 77 77 77 77 77 77 78 78 78 77 77 77 77 77 77 77 77 77 77 77 74 74 74 74 74 68 68

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N39 23 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N39

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 54 54 54 54 54 54 54 54 54Piling 63 63 63 63 63 63 63 63 63 63Detritors 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Modification of Existing Facilities 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Fine Screen Chamber 52 52 52 52 52 52 52 52 52 52Flow Separation Chamber 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Flowmeter Chamber & Flow Equalization Chambe 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Rapid Mixing Tank & Flocculation Tank 55 55 55 55 55 55 55 55 55Primary Sedimentation Tank 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57Sludge Buffer Tank 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Centrifuge Building 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Transfer Pumping Station 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54Potable Water Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49Return Liquor Pumping Station 49 49 49 49 49 49 49 49 49 49 49 49 49Sludge Dewatering House & Storage Tank 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Chemical Dosing House & Storage Building 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54 54UV Substation & Facilities 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52Admin. Building & Control Room 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Deodourization Unit 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Pipes & Culverts 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Roadworks 51 51 51 51 51 51 51 51 51 51 51 51 51Transformer House 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49Landscape works & Establishment works 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47Electricity Generators for General Purposes 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34

Alternative 4 Bypass CulvertSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63 63Bulk Excavation for Box Culvert 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Steel Fixing & Concreting of Box Culvert 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Reinstatement & Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Electricity Generators for General Purposes 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38

Noise Impact from Fixed Sites 64 66 70 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 67 67 67 67 66 63 63

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N39 24 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N40

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 63 63 63 63 63 63 63 63 63Piling 64 64 64 64 64 64 64 64 64 64Detritors 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Modification of Existing Facilities 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65Fine Screen Chamber 62 62 62 62 62 62 62 62 62 62Flow Separation Chamber 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Flowmeter Chamber & Flow Equalization Chambe 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Rapid Mixing Tank & Flocculation Tank 64 64 64 64 64 64 64 64 64Primary Sedimentation Tank 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Sludge Buffer Tank 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Centrifuge Building 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Transfer Pumping Station 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Potable Water Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Return Liquor Pumping Station 61 61 61 61 61 61 61 61 61 61 61 61 61Sludge Dewatering House & Storage Tank 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61Chemical Dosing House & Storage Building 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64UV Substation & Facilities 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Admin. Building & Control Room 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63Deodourization Unit 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Pipes & Culverts 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Roadworks 58 58 58 58 58 58 58 58 58 58 58 58 58Transformer House 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46

Alternative 4 Bypass CulvertSite Clearance & Site Formation 86 86 86 86 86 86 86 86 86 86Bulk Excavation for Box Culvert 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86Steel Fixing & Concreting of Box Culvert 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86Reinstatement & Roadworks 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81Electricity Generators for General Purposes 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64Maximum at each month (3) 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 82 82

Noise Impact from Fixed Sites 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 87 82 82

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N40 25 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A4 Predicted Noise Levels for All Construction Activities in the Programme

NSR N40

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

San Wai STWSite Clearance & Site Formation 55 55 55 55 55 55 55 55 55Piling 64 64 64 64 64 64 64 64 64 64Detritors 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Modification of Existing Facilities 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Fine Screen Chamber 53 53 53 53 53 53 53 53 53 53Flow Separation Chamber 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Flowmeter Chamber & Flow Equalization Chambe 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Rapid Mixing Tank & Flocculation Tank 56 56 56 56 56 56 56 56 56Primary Sedimentation Tank 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58Sludge Buffer Tank 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Centrifuge Building 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Transfer Pumping Station 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55Potable Water Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Return Liquor Pumping Station 50 50 50 50 50 50 50 50 50 50 50 50 50Sludge Dewatering House & Storage Tank 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Chemical Dosing House & Storage Building 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55UV Substation & Facilities 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53Admin. Building & Control Room 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56Deodourization Unit 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Pipes & Culverts 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62 62Roadworks 52 52 52 52 52 52 52 52 52 52 52 52 52Transformer House 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50Landscape works & Establishment works 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48Electricity Generators for General Purposes 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35

Alternative 4 Bypass CulvertSite Clearance & Site Formation 67 67 67 67 67 67 67 67 67 67Bulk Excavation for Box Culvert 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71Steel Fixing & Concreting of Box Culvert 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69Reinstatement & Roadworks 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67Electricity Generators for General Purposes 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43Maximum at each month (3) 68 68 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 70 70 70 70 70 68 68

Noise Impact from Fixed Sites 68 70 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 71 71 71 71 71 69 69

2007 20082004 2005 2006

App 4A5 Noise Impact for San Wai STW.xls - N40 26 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N1

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 63 63Bulk Excavation for Sub-Structure and Site Formatio 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Sub-Structure 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Roof and Columns 69 69 69 69 69 69 69 69 69 69 69 69 69Brick Work & Finishing 58 58 58 58 58 58 58 58M&E Installation & Pipeworks 61 61 61 61 61 61 61Landscape Works & Roadworks 68 68 68 68Testing & Commissioning N/AElectricity Generation for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

Noise Impact from Fixed Sites 63 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 69 69 69 69 69 69 69 69 69 69 69 69 59 69 69 69 63 63 63 49 49 49

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 49 49Bulk Excavation for Sub-Structure and Site Formatio 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Sub-Structure 53 53 53 53 53 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Roof and Columns 47 47 47 47 47 47 47 47 47 47 47 47 47Brick Work & Finishing 47 47 47 47 47 47 47 47M&E Installation & Pipeworks 47 47 47 47 47 47 47Landscape Works & Roadworks 51 51 51 51Testing & Commissioning N/AElectricity Generation for General Purposes 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28

Noise Impact from Fixed Sites 49 55 55 55 55 55 55 55 53 53 53 53 53 53 53 53 53 53 53 53 47 47 47 47 47 47 47 47 47 47 47 47 47 54 54 54 50 50 50 28 28 28

2008

20082007

2007

2004 2005 2006

2004 2005 2006

App 4A6 Noise Impact for Ha Tsuen PS.xls - N1 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N2

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 62 62Bulk Excavation for Sub-Structure and Site Formatio 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Sub-Structure 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Roof and Columns 68 68 68 68 68 68 68 68 68 68 68 68 68Brick Work & Finishing 57 57 57 57 57 57 57 57M&E Installation & Pipeworks 60 60 60 60 60 60 60Landscape Works & Roadworks 67 67 67 67Testing & Commissioning N/AElectricity Generation for General Purposes 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

Noise Impact from Fixed Sites 62 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 68 68 68 68 68 68 68 68 68 68 68 68 58 68 68 68 62 62 62 48 48 48

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 48 48Bulk Excavation for Sub-Structure and Site Formatio 54 54 54 54 54 54 54 54Steel Fixing & Concreting of Sub-Structure 52 52 52 52 52 52 52 52 52 52 52 52 52Steel Fixing & Concreting of Roof and Columns 46 46 46 46 46 46 46 46 46 46 46 46 46Brick Work & Finishing 46 46 46 46 46 46 46 46M&E Installation & Pipeworks 46 46 46 46 46 46 46Landscape Works & Roadworks 50 50 50 50Testing & Commissioning N/AElectricity Generation for General Purposes 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27

Noise Impact from Fixed Sites 48 54 54 54 54 54 54 54 52 52 52 52 52 52 52 52 52 52 52 52 46 46 46 46 46 46 46 46 46 46 46 46 46 53 53 53 49 49 49 27 27 27

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N2 2 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N3

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 65 65Bulk Excavation for Sub-Structure and Site Formatio 72 72 72 72 72 72 72 72Steel Fixing & Concreting of Sub-Structure 72 72 72 72 72 72 72 72 72 72 72 72 72Steel Fixing & Concreting of Roof and Columns 71 71 71 71 71 71 71 71 71 71 71 71 71Brick Work & Finishing 60 60 60 60 60 60 60 60M&E Installation & Pipeworks 63 63 63 63 63 63 63Landscape Works & Roadworks 70 70 70 70Testing & Commissioning N/AElectricity Generation for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

Noise Impact from Fixed Sites 65 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 71 71 71 71 71 71 71 71 71 71 71 71 61 71 71 71 65 65 65 51 51 51

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 51 51Bulk Excavation for Sub-Structure and Site Formatio 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Sub-Structure 55 55 55 55 55 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Roof and Columns 49 49 49 49 49 49 49 49 49 49 49 49 49Brick Work & Finishing 49 49 49 49 49 49 49 49M&E Installation & Pipeworks 49 49 49 49 49 49 49Landscape Works & Roadworks 53 53 53 53Testing & Commissioning N/AElectricity Generation for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

Noise Impact from Fixed Sites 51 57 57 57 57 57 57 57 55 55 55 55 55 55 55 55 55 55 55 55 49 49 49 49 49 49 49 49 49 49 49 49 49 56 56 56 52 52 52 30 30 30

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N3 3 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N5

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 63 63Bulk Excavation for Sub-Structure and Site Formatio 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Sub-Structure 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Roof and Columns 69 69 69 69 69 69 69 69 69 69 69 69 69Brick Work & Finishing 58 58 58 58 58 58 58 58M&E Installation & Pipeworks 61 61 61 61 61 61 61Landscape Works & Roadworks 68 68 68 68Testing & Commissioning N/AElectricity Generation for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

Noise Impact from Fixed Sites 63 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 69 69 69 69 69 69 69 69 69 69 69 69 59 69 69 69 63 63 63 49 49 49

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 49 49Bulk Excavation for Sub-Structure and Site Formatio 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Sub-Structure 53 53 53 53 53 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Roof and Columns 47 47 47 47 47 47 47 47 47 47 47 47 47Brick Work & Finishing 47 47 47 47 47 47 47 47M&E Installation & Pipeworks 47 47 47 47 47 47 47Landscape Works & Roadworks 51 51 51 51Testing & Commissioning N/AElectricity Generation for General Purposes 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28

Noise Impact from Fixed Sites 49 55 55 55 55 55 55 55 53 53 53 53 53 53 53 53 53 53 53 53 47 47 47 47 47 47 47 47 47 47 47 47 47 54 54 54 50 50 50 28 28 28

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N5 4 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N6

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 67 67Bulk Excavation for Sub-Structure and Site Formation 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Sub-Structure 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Roof and Columns 73 73 73 73 73 73 73 73 73 73 73 73 73Brick Work & Finishing 62 62 62 62 62 62 62 62M&E Installation & Pipeworks 65 65 65 65 65 65 65Landscape Works & Roadworks 72 72 72 72Testing & Commissioning N/AElectricity Generation for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

Noise Impact from Fixed Sites 67 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 63 73 73 73 67 67 67 53 53 53

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 53 53Bulk Excavation for Sub-Structure and Site Formation 59 59 59 59 59 59 59 59Steel Fixing & Concreting of Sub-Structure 57 57 57 57 57 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Roof and Columns 51 51 51 51 51 51 51 51 51 51 51 51 51Brick Work & Finishing 51 51 51 51 51 51 51 51M&E Installation & Pipeworks 51 51 51 51 51 51 51Landscape Works & Roadworks 55 55 55 55Testing & Commissioning N/AElectricity Generation for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

Noise Impact from Fixed Sites 53 59 59 59 59 59 59 59 57 57 57 57 57 57 57 57 57 57 57 57 51 51 51 51 51 51 51 51 51 51 51 51 51 58 58 58 54 54 54 32 32 32

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N6 5 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N7

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 67 67Bulk Excavation for Sub-Structure and Site Formation 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Sub-Structure 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Roof and Columns 73 73 73 73 73 73 73 73 73 73 73 73 73Brick Work & Finishing 62 62 62 62 62 62 62 62M&E Installation & Pipeworks 65 65 65 65 65 65 65Landscape Works & Roadworks 72 72 72 72Testing & Commissioning N/AElectricity Generation for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

Noise Impact from Fixed Sites 67 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 73 73 73 73 73 73 73 73 73 73 73 73 63 73 73 73 67 67 67 53 53 53

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 53 53Bulk Excavation for Sub-Structure and Site Formation 59 59 59 59 59 59 59 59Steel Fixing & Concreting of Sub-Structure 57 57 57 57 57 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Roof and Columns 51 51 51 51 51 51 51 51 51 51 51 51 51Brick Work & Finishing 51 51 51 51 51 51 51 51M&E Installation & Pipeworks 51 51 51 51 51 51 51Landscape Works & Roadworks 55 55 55 55Testing & Commissioning N/AElectricity Generation for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

Noise Impact from Fixed Sites 53 59 59 59 59 59 59 59 57 57 57 57 57 57 57 57 57 57 57 57 51 51 51 51 51 51 51 51 51 51 51 51 51 58 58 58 54 54 54 32 32 32

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N7 6 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N8

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 66 66Bulk Excavation for Sub-Structure and Site Formatio 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Sub-Structure 73 73 73 73 73 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Roof and Columns 72 72 72 72 72 72 72 72 72 72 72 72 72Brick Work & Finishing 61 61 61 61 61 61 61 61M&E Installation & Pipeworks 64 64 64 64 64 64 64Landscape Works & Roadworks 71 71 71 71Testing & Commissioning N/AElectricity Generation for General Purposes 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

Noise Impact from Fixed Sites 66 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 72 72 72 72 72 72 72 72 72 72 72 72 62 72 72 72 66 66 66 52 52 52

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 52 52Bulk Excavation for Sub-Structure and Site Formatio 58 58 58 58 58 58 58 58Steel Fixing & Concreting of Sub-Structure 56 56 56 56 56 56 56 56 56 56 56 56 56Steel Fixing & Concreting of Roof and Columns 50 50 50 50 50 50 50 50 50 50 50 50 50Brick Work & Finishing 50 50 50 50 50 50 50 50M&E Installation & Pipeworks 50 50 50 50 50 50 50Landscape Works & Roadworks 54 54 54 54Testing & Commissioning N/AElectricity Generation for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

Noise Impact from Fixed Sites 52 58 58 58 58 58 58 58 56 56 56 56 56 56 56 56 56 56 56 56 50 50 50 50 50 50 50 50 50 50 50 50 50 57 57 57 53 53 53 31 31 31

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N8 7 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N11

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 62 62Bulk Excavation for Sub-Structure and Site Formatio 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Sub-Structure 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Roof and Columns 68 68 68 68 68 68 68 68 68 68 68 68 68Brick Work & Finishing 57 57 57 57 57 57 57 57M&E Installation & Pipeworks 60 60 60 60 60 60 60Landscape Works & Roadworks 67 67 67 67Testing & Commissioning N/AElectricity Generation for General Purposes 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

Noise Impact from Fixed Sites 62 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 68 68 68 68 68 68 68 68 68 68 68 68 58 68 68 68 62 62 62 48 48 48

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 48 48Bulk Excavation for Sub-Structure and Site Formatio 54 54 54 54 54 54 54 54Steel Fixing & Concreting of Sub-Structure 52 52 52 52 52 52 52 52 52 52 52 52 52Steel Fixing & Concreting of Roof and Columns 46 46 46 46 46 46 46 46 46 46 46 46 46Brick Work & Finishing 46 46 46 46 46 46 46 46M&E Installation & Pipeworks 46 46 46 46 46 46 46Landscape Works & Roadworks 50 50 50 50Testing & Commissioning N/AElectricity Generation for General Purposes 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27

Noise Impact from Fixed Sites 48 54 54 54 54 54 54 54 52 52 52 52 52 52 52 52 52 52 52 52 46 46 46 46 46 46 46 46 46 46 46 46 46 53 53 53 49 49 49 27 27 27

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N11 8 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N12

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 61 61Bulk Excavation for Sub-Structure and Site Formation 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Sub-Structure 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Roof and Columns 67 67 67 67 67 67 67 67 67 67 67 67 67Brick Work & Finishing 56 56 56 56 56 56 56 56M&E Installation & Pipeworks 59 59 59 59 59 59 59Landscape Works & Roadworks 66 66 66 66Testing & Commissioning N/AElectricity Generation for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

Noise Impact from Fixed Sites 61 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 57 67 67 67 61 61 61 47 47 47

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 47 47Bulk Excavation for Sub-Structure and Site Formation 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Sub-Structure 51 51 51 51 51 51 51 51 51 51 51 51 51Steel Fixing & Concreting of Roof and Columns 45 45 45 45 45 45 45 45 45 45 45 45 45Brick Work & Finishing 45 45 45 45 45 45 45 45M&E Installation & Pipeworks 45 45 45 45 45 45 45Landscape Works & Roadworks 49 49 49 49Testing & Commissioning N/AElectricity Generation for General Purposes 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26

Noise Impact from Fixed Sites 47 53 53 53 53 53 53 53 51 51 51 51 51 51 51 51 51 51 51 51 45 45 45 45 45 45 45 45 45 45 45 45 45 52 52 52 48 48 48 26 26 26

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A6 Noise Impact for Ha Tsuen PS.xls - N12 9 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N1

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 63 63Bulk Excavation for Sub-Structure and Site Formatio 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Sub-Structure 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Roof and Columns 69 69 69 69 69 69 69 69 69 69 69 69 69Brick Work & Finishing 58 58 58 58 58 58 58 58M&E Installation & Pipeworks 61 61 61 61 61 61 61Landscape Works & Roadworks 68 68 68 68Testing & Commissioning N/AElectricity Generation for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

YLKTSSD Stage IInstallation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

YLKTSSD Stage II (Original)Installation of sewer lines 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79

Cumulative Impact from Fixed Sites 63 70 70 70 70 70 70 72 72 72 72 72 72 72 72 72 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79 80 80 80 79 79 79 79 79 79 79 79 67 67 67 67 67 67

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 49 49Bulk Excavation for Sub-Structure and Site Formatio 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Sub-Structure 53 53 53 53 53 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Roof and Columns 47 47 47 47 47 47 47 47 47 47 47 47 47Brick Work & Finishing 47 47 47 47 47 47 47 47M&E Installation & Pipeworks 47 47 47 47 47 47 47Landscape Works & Roadworks 51 51 51 51Testing & Commissioning N/AElectricity Generation for General Purposes 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28

YLKTSSD Stage IInstallation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

YLKTSSD Stage II (Original)Installation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

Cumulative Impact from Fixed Sites 49 55 55 55 55 55 55 59 58 58 58 58 58 58 58 58 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 56 56 56 56 56 56

2004 2005 2006

2004 2005 2006 2008

20082007

2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N1 1 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N2

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 62 62Bulk Excavation for Sub-Structure and Site Formatio 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Sub-Structure 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Roof and Columns 68 68 68 68 68 68 68 68 68 68 68 68 68Brick Work & Finishing 57 57 57 57 57 57 57 57M&E Installation & Pipeworks 60 60 60 60 60 60 60Landscape Works & Roadworks 67 67 67 67Testing & Commissioning N/AElectricity Generation for General Purposes 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

YLKTSSD Stage IInstallation of sewer lines 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66

YLKTSSD Stage II (Original)Installation of sewer lines 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75

Cumulative Impact from Fixed Sites 62 69 69 69 69 69 69 71 71 71 71 71 71 71 71 71 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 76 66 66 66 66 66 66

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 48 48Bulk Excavation for Sub-Structure and Site Formatio 54 54 54 54 54 54 54 54Steel Fixing & Concreting of Sub-Structure 52 52 52 52 52 52 52 52 52 52 52 52 52Steel Fixing & Concreting of Roof and Columns 46 46 46 46 46 46 46 46 46 46 46 46 46Brick Work & Finishing 46 46 46 46 46 46 46 46M&E Installation & Pipeworks 46 46 46 46 46 46 46Landscape Works & Roadworks 50 50 50 50Testing & Commissioning N/AElectricity Generation for General Purposes 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27

YLKTSSD Stage IInstallation of sewer lines 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55

YLKTSSD Stage II (Original)Installation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

Cumulative Impact from Fixed Sites 48 54 54 54 54 54 54 58 57 57 57 57 57 57 57 57 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 55 55 55 55 55 55

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N2 2 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N3

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 65 65Bulk Excavation for Sub-Structure and Site Formatio 72 72 72 72 72 72 72 72Steel Fixing & Concreting of Sub-Structure 72 72 72 72 72 72 72 72 72 72 72 72 72Steel Fixing & Concreting of Roof and Columns 71 71 71 71 71 71 71 71 71 71 71 71 71Brick Work & Finishing 60 60 60 60 60 60 60 60M&E Installation & Pipeworks 63 63 63 63 63 63 63Landscape Works & Roadworks 70 70 70 70Testing & Commissioning N/AElectricity Generation for General Purposes 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51 51

YLKTSSD Stage IInstallation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

YLKTSSD Stage II (Original)Installation of sewer lines 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

Cumulative Impact from Fixed Sites 65 72 72 72 72 72 72 73 73 73 73 73 73 73 73 73 75 75 75 75 74 74 74 74 74 74 74 74 74 74 74 74 71 74 74 74 72 72 72 71 71 71 71 71 68 68 68 68 68 68

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 51 51Bulk Excavation for Sub-Structure and Site Formatio 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Sub-Structure 55 55 55 55 55 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Roof and Columns 49 49 49 49 49 49 49 49 49 49 49 49 49Brick Work & Finishing 49 49 49 49 49 49 49 49M&E Installation & Pipeworks 49 49 49 49 49 49 49Landscape Works & Roadworks 53 53 53 53Testing & Commissioning N/AElectricity Generation for General Purposes 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30

YLKTSSD Stage IInstallation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

YLKTSSD Stage II (Original)Installation of sewer lines 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57

Cumulative Impact from Fixed Sites 51 57 57 57 57 57 57 60 59 59 59 59 59 59 59 59 61 61 61 61 60 60 60 60 60 60 60 60 60 60 60 60 60 61 61 61 61 61 61 60 60 60 60 60 57 57 57 57 57 57

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N3 3 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N5

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 63 63Bulk Excavation for Sub-Structure and Site Formatio 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Sub-Structure 70 70 70 70 70 70 70 70 70 70 70 70 70Steel Fixing & Concreting of Roof and Columns 69 69 69 69 69 69 69 69 69 69 69 69 69Brick Work & Finishing 58 58 58 58 58 58 58 58M&E Installation & Pipeworks 61 61 61 61 61 61 61Landscape Works & Roadworks 68 68 68 68Testing & Commissioning N/AElectricity Generation for General Purposes 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49 49

YLKTSSD Stage IInstallation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

YLKTSSD Stage II (Original)Installation of sewer lines 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67

Cumulative Impact from Fixed Sites 63 70 70 70 70 70 70 72 72 72 72 72 72 72 72 72 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 73 70 73 73 73 71 71 71 70 70 70 70 70 67 67 67 67 67 67

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 49 49Bulk Excavation for Sub-Structure and Site Formatio 55 55 55 55 55 55 55 55Steel Fixing & Concreting of Sub-Structure 53 53 53 53 53 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Roof and Columns 47 47 47 47 47 47 47 47 47 47 47 47 47Brick Work & Finishing 47 47 47 47 47 47 47 47M&E Installation & Pipeworks 47 47 47 47 47 47 47Landscape Works & Roadworks 51 51 51 51Testing & Commissioning N/AElectricity Generation for General Purposes 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28

YLKTSSD Stage IInstallation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

YLKTSSD Stage II (Original)Installation of sewer lines 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56

Cumulative Impact from Fixed Sites 49 55 55 55 55 55 55 59 58 58 58 58 58 58 58 58 60 60 60 60 59 59 59 59 59 59 59 59 59 59 59 59 59 60 60 60 60 60 60 59 59 59 59 59 56 56 56 56 56 56

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N5 4 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N6

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 67 67Bulk Excavation for Sub-Structure and Site Formation 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Sub-Structure 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Roof and Columns 73 73 73 73 73 73 73 73 73 73 73 73 73Brick Work & Finishing 62 62 62 62 62 62 62 62M&E Installation & Pipeworks 65 65 65 65 65 65 65Landscape Works & Roadworks 72 72 72 72Testing & Commissioning N/AElectricity Generation for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage IInstallation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage II (Original)Installation of sewer lines 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75

Cumulative Impact from Fixed Sites 67 74 74 74 74 74 74 75 75 75 75 75 75 75 75 75 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 76 78 78 78 76 76 76 76 76 76 76 76 69 69 69 69 69 69

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 53 53Bulk Excavation for Sub-Structure and Site Formation 59 59 59 59 59 59 59 59Steel Fixing & Concreting of Sub-Structure 57 57 57 57 57 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Roof and Columns 51 51 51 51 51 51 51 51 51 51 51 51 51Brick Work & Finishing 51 51 51 51 51 51 51 51M&E Installation & Pipeworks 51 51 51 51 51 51 51Landscape Works & Roadworks 55 55 55 55Testing & Commissioning N/AElectricity Generation for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

YLKTSSD Stage IInstallation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

YLKTSSD Stage II (Original)Installation of sewer lines 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

Cumulative Impact from Fixed Sites 53 59 59 59 59 59 59 62 61 61 61 61 61 61 61 61 66 66 66 66 65 65 65 65 65 65 65 65 65 65 65 65 65 66 66 66 65 65 65 65 65 65 65 65 58 58 58 58 58 58

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N6 5 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N7

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 67 67Bulk Excavation for Sub-Structure and Site Formation 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Sub-Structure 74 74 74 74 74 74 74 74 74 74 74 74 74Steel Fixing & Concreting of Roof and Columns 73 73 73 73 73 73 73 73 73 73 73 73 73Brick Work & Finishing 62 62 62 62 62 62 62 62M&E Installation & Pipeworks 65 65 65 65 65 65 65Landscape Works & Roadworks 72 72 72 72Testing & Commissioning N/AElectricity Generation for General Purposes 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53

YLKTSSD Stage IInstallation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage II (Original)Installation of sewer lines 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72

Cumulative Impact from Fixed Sites 67 74 74 74 74 74 74 75 75 75 75 75 75 75 75 75 77 77 77 77 76 76 76 76 76 76 76 76 76 76 76 76 74 76 76 76 75 75 75 74 74 74 74 74 69 69 69 69 69 69

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 53 53Bulk Excavation for Sub-Structure and Site Formation 59 59 59 59 59 59 59 59Steel Fixing & Concreting of Sub-Structure 57 57 57 57 57 57 57 57 57 57 57 57 57Steel Fixing & Concreting of Roof and Columns 51 51 51 51 51 51 51 51 51 51 51 51 51Brick Work & Finishing 51 51 51 51 51 51 51 51M&E Installation & Pipeworks 51 51 51 51 51 51 51Landscape Works & Roadworks 55 55 55 55Testing & Commissioning N/AElectricity Generation for General Purposes 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32

YLKTSSD Stage IInstallation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

YLKTSSD Stage II (Original)Installation of sewer lines 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61

Cumulative Impact from Fixed Sites 53 59 59 59 59 59 59 62 61 61 61 61 61 61 61 61 64 64 64 64 63 63 63 63 63 63 63 63 63 63 63 63 63 64 64 64 63 63 63 63 63 63 63 63 58 58 58 58 58 58

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N7 6 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N8

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 66 66Bulk Excavation for Sub-Structure and Site Formatio 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Sub-Structure 73 73 73 73 73 73 73 73 73 73 73 73 73Steel Fixing & Concreting of Roof and Columns 72 72 72 72 72 72 72 72 72 72 72 72 72Brick Work & Finishing 61 61 61 61 61 61 61 61M&E Installation & Pipeworks 64 64 64 64 64 64 64Landscape Works & Roadworks 71 71 71 71Testing & Commissioning N/AElectricity Generation for General Purposes 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

YLKTSSD Stage IInstallation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

YLKTSSD Stage II (Original)Installation of sewer lines 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69 69

Cumulative Impact from Fixed Sites 66 73 73 73 73 73 73 74 74 74 74 74 74 74 74 74 76 76 76 76 75 75 75 75 75 75 75 75 75 75 75 75 72 75 75 75 73 73 73 72 72 72 72 72 69 69 69 69 69 69

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 52 52Bulk Excavation for Sub-Structure and Site Formatio 58 58 58 58 58 58 58 58Steel Fixing & Concreting of Sub-Structure 56 56 56 56 56 56 56 56 56 56 56 56 56Steel Fixing & Concreting of Roof and Columns 50 50 50 50 50 50 50 50 50 50 50 50 50Brick Work & Finishing 50 50 50 50 50 50 50 50M&E Installation & Pipeworks 50 50 50 50 50 50 50Landscape Works & Roadworks 54 54 54 54Testing & Commissioning N/AElectricity Generation for General Purposes 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31

YLKTSSD Stage IInstallation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

YLKTSSD Stage II (Original)Installation of sewer lines 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58

Cumulative Impact from Fixed Sites 52 58 58 58 58 58 58 61 60 60 60 60 60 60 60 60 62 62 62 62 61 61 61 61 61 61 61 61 61 61 61 61 61 62 62 62 62 62 62 61 61 61 61 61 58 58 58 58 58 58

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N8 7 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N11

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 62 62Bulk Excavation for Sub-Structure and Site Formatio 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Sub-Structure 69 69 69 69 69 69 69 69 69 69 69 69 69Steel Fixing & Concreting of Roof and Columns 68 68 68 68 68 68 68 68 68 68 68 68 68Brick Work & Finishing 57 57 57 57 57 57 57 57M&E Installation & Pipeworks 60 60 60 60 60 60 60Landscape Works & Roadworks 67 67 67 67Testing & Commissioning N/AElectricity Generation for General Purposes 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

YLKTSSD Stage IInstallation of sewer lines 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81

YLKTSSD Stage II (Original)Installation of sewer lines

Cumulative Impact from Fixed Sites 62 69 69 69 69 69 69 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 48 48Bulk Excavation for Sub-Structure and Site Formatio 54 54 54 54 54 54 54 54Steel Fixing & Concreting of Sub-Structure 52 52 52 52 52 52 52 52 52 52 52 52 52Steel Fixing & Concreting of Roof and Columns 46 46 46 46 46 46 46 46 46 46 46 46 46Brick Work & Finishing 46 46 46 46 46 46 46 46M&E Installation & Pipeworks 46 46 46 46 46 46 46Landscape Works & Roadworks 50 50 50 50Testing & Commissioning N/AElectricity Generation for General Purposes 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27

YLKTSSD Stage IInstallation of sewer lines 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70

YLKTSSD Stage II (Original)Installation of sewer lines

Cumulative Impact from Fixed Sites 48 54 54 54 54 54 54 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N11 8 09-01-03

Agreement No. CE 62/2000ENVIRONMENTAL IMPACT ASSESSMENT STUDYFOR UPGRADING AND EXPANSION OF SAN WAI SEWAGE TREATMENT WORKS AND EXPANSION OF HA TSUEN PUMPING STATIONFinal EIA ReportAppendix 4A - Construction Noise AssessmentTable 4A5 Predicted Noise Levels for All Construction Activities in the Programme

NSR N12

UNMITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 61 61Bulk Excavation for Sub-Structure and Site Formation 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Sub-Structure 68 68 68 68 68 68 68 68 68 68 68 68 68Steel Fixing & Concreting of Roof and Columns 67 67 67 67 67 67 67 67 67 67 67 67 67Brick Work & Finishing 56 56 56 56 56 56 56 56M&E Installation & Pipeworks 59 59 59 59 59 59 59Landscape Works & Roadworks 66 66 66 66Testing & Commissioning N/AElectricity Generation for General Purposes 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

YLKTSSD Stage IInstallation of sewer lines 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85

YLKTSSD Stage II (Original)Installation of sewer lines

Cumulative Impact from Fixed Sites 61 68 68 68 68 68 68 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85

MITIGATED SCENARIOConstruction Noise Level at Different Periods of Time

Construction Activities Max Predicted Noise Level (PNL) 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2

Ha Tsuen PSSite Clearance 47 47Bulk Excavation for Sub-Structure and Site Formation 53 53 53 53 53 53 53 53Steel Fixing & Concreting of Sub-Structure 51 51 51 51 51 51 51 51 51 51 51 51 51Steel Fixing & Concreting of Roof and Columns 45 45 45 45 45 45 45 45 45 45 45 45 45Brick Work & Finishing 45 45 45 45 45 45 45 45M&E Installation & Pipeworks 45 45 45 45 45 45 45Landscape Works & Roadworks 49 49 49 49Testing & Commissioning N/AElectricity Generation for General Purposes 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26

YLKTSSD Stage IInstallation of sewer lines 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74

YLKTSSD Stage II (Original)Installation of sewer lines

Cumulative Impact from Fixed Sites 47 53 53 53 53 53 53 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74

20082004 2005 2006 2007

20082004 2005 2006 2007

App 4A7 Cumulative Impact for Ha Tsuen PS.xls - N12 9 09-01-03