ADDENDUM NO. 4 INVITATION FOR BID: CSO Control Program … · 2018-09-27 · 7. In the specification SECTION 01335 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, PART 1 GENERAL, 1.4 LIMITATIONS

Screenings and Grit Facility

Addendum No. 4 - 1 - 09/2018

ADDENDUM NO. 4

DATE: September 28, 2018

INVITATION FOR BID: T180022483 - CSO Control Program – Special Order

15A Division 47 - Screenings and Grit Removal

Facilities DATED: August 6, 2018

BID DUE DATE: October 16, 2018 @ 2:30 p.m. EST (Change)

BID OPENING DATE: October 16, 2018 @ 2:30 p.m. EST (Change)

SUBJECT: Changes to the Project Book, Specifications, Contract

Drawings and Questions and Responses

PART 1: CHANGES TO PROJECT BOOK

1. In SPECIAL CONDITIONS OF THE CONTRACT Exhibit A, Attachment #4, Wage

Determinations, delete General Decision Number: VA180166 01/12/2018 VA166 and replace

with the General Decision Number: VA180166 06/15/2018 VA166 located at the end of this

addendum in Appendix A.

2. In SPECIAL CONDITIONS OF THE CONTRACT Exhibit A, Attachment #4, Wage

Determinations, delete General Decision Number: VA180049 01/05/2018 VA49 and replace with

the attached General Decision Number: VA180049 005/04/2018 VA49 located at the end of this

addendum in Appendix A.

3. On page 66 of the Project Book, after 2.1 B., add the following:

“3.0 Wage Determination Use

a. The Wage Determinations in General Decision Number: VA180049 005/04/2018 VA49

(Construction Type: Heavy) shall be used for all work depicted on Bid Drawings AG3

through and including AG31.

b. The Wage Determinations in General Decision Number: VA180166 06/15/2018 VA166

(Construction Type Building) shall be used for all other work depicted on the remaining

Bid Drawings.

PART 2: CHANGES TO SPECIFICATIONS

1. In the table of contents, under DIVISION 11 – EQUIPMENT, delete the following:

“Teledyne Isco 5800 Refrigerated Sampler 11400”

2. In the table of contents, under DIVISION 14 - CONVEYING SYSTEMS, delete section title “Jib

Cranes” and replace with “Cranes and Hoisting Equipment”.


Addendum No. 4 - 2 - 09/2018

3. In the specification SECTION 01111 CONSTRUCTION MANAGER AND ENGINEER, PART

1 GENERAL, 1.2 DEFINITIONS, A., on Page 01111-1, delete “(804) 355-9993” in the second

sentence and replace with “(800) 837-9779”.

4. In the specification SECTION 01290 MEASUREMENT AND PAYMENT, PART 1

GENERAL, 1.7 SCHEDULE OF CONTRACT ITEMS, G. Contract Item 7: Additional Length

of Micropiles, on Page 01290-8, insert “Phase 2 – ” before the word “Additional”.


GENERAL, 1.7 SCHEDULE OF CONTRACT ITEMS, G. Contract Item 7: Phase 2 –

Additional Length of Micropiles, on Page 01290-8, Sub-sections “1. Description:” and “3.

Payment:” insert “Phase 2 – ” before the word “Additional”.


GENERAL, 1.7 SCHEDULE OF CONTRACT ITEMS, L. Contract Item 12: Preparation &

Clean-up for River Flooding, on Page 01290-10, Sub-section “1. Description:” delete “7” in the

second paragraph sixth sentence and replace with “12”.

7. In the specification SECTION 01335 LIMITATIONS ON SEQUENCE OF CONSTRUCTION,

PART 1 GENERAL, 1.4 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, I.3.b. (1), on

Page 01335-6, add the following:

“(a) Install ground and building monitoring system and establish movement survey baseline data

prior to sheet piling and excavation activities.”


PART 1 GENERAL, 1.4 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, I.3.b. (1), on

Page 01335-6, change paragraph numbers “(a), (b), (c), (d)” with “(b), (c), (d), (e)”.


PART 1 GENERAL, 1.4 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, I., 2., after

paragraph b., add the following:

“c. Provide a temporary power distribution panel board to operating equipment, influent screen

and grit channel gates for the influent screen during installation of new MCC’s.”


PART 1 GENERAL, 1.4 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, I., 2. change

paragraph numbers “c., d., e., f., g., h., i., to “d., e., f., g., h., i., j.,”.

11. In the specification SECTION 01450 QUALITY CONTROL, PART 1 GENERAL, 1.7 COSTS

OF INSPECTION, after paragraph C.5, on Page 01450-6, insert “1.8 ACCEPTANCE TESTS”.


OF INSPECTION, D, on Page 01450-6, delete “ACCEPTANCE TESTS”.


Addendum No. 4 - 3 - 09/2018


OF INSPECTION, D, on Pages 01450-6 and 01450-7, delete the paragraph numbers “D, E and

F” and replace as “A, B and C”.

14. In the specification SECTION 01450 QUALITY CONTROL, PART 1 GENERAL, 1.8

FAILURE TO COMPLY WITH CONTRACT, on Page 01450-6, delete paragraph number “1.8”

and replace with “1.9”.

15. In the specification SECTION 01450 QUALITY CONTROL, at the end of Table 1450-1 Field

Testing Checklist on Page 01450-44, after item QQQQ., insert the table in “Appendix B

Specifications.”

16. In the specification SECTION 01500 CONSTRUCTION FACILITIES AND TEMPORARY

CONTROLS, PART 1 GENERAL, 1.1 SECTION INCLUDES, on Page 01500-1, delete “D.

Temporary Construction”.


CONTROLS, PART 1 GENERAL, 1.1 SECTION INCLUDES, L., on Page 01500-1, insert “W”

before the words “WTP Site Security”.


CONTROLS, PART 1 GENERAL, 1.8 TEMPORARY CONTROLS, H. Erosion Control:, on

Page 01500-8, insert “Contract Drawings and ” before the word “Specification”.


CONTROLS, PART 1 GENERAL, 1.9 TRAFFIC REGULATION, on Page 01500-9, delete title

“ TRAFFIC REGULATION” and rename “WWTP SITE SECURITY AND TRAFFIC

REGULATION”.


CONTROLS, PART 1 GENERAL, 1.9 TRAFFIC REGULATION, on Page 01500-9, delete

Paragraph A and add the following:

“ A. Parking: Provide and maintain suitable parking in designated or approved areas for the use

of all construction workers and others performing work or furnishing services in connection with

the Contract, to avoid any need for parking personal vehicles where they may interfere with

public traffic or construction activities. All CONTRACTOR and subcontractor personnel shall

park in the remote north lot and walk on to the site through the new east gate. Only contractor

work vehicles required for the work will be allowed on site.

B. Access: The contractor shall make provisions for a security guard with suitable climate-

controlled, weatherproof structure to monitor and record contractor activities for the duration

of the construction. The guard station shall be located at the East Gate off Brander Street and

shall be manned during all Contractor working hours. The guard shall be from a security firm

with a minimum of 10 years experience in the security business. The contractor shall provide


Addendum No. 4 - 4 - 09/2018

badges for all employees and subcontractor employees that can be verified by the security

guard. Badges shall be laminated in plastic with a metal clip which has the following

information: employee name, photograph, employing contractor, personnel number. The

security guard shall maintain a daily log and maintain a file of personnel, vehicles, and

deliveries entering and leaving the Plant site. All construction equipment, deliveries and

subcontractors shall access the Plant site through the East Gate. No construction traffic shall

travel through the main WWTP gate.”


CONTROLS, PART 1 GENERAL, 1.9 TRAFFIC REGULATION, on Page 01500-9, delete the

paragraph numbers “B and C” and replace as “C and D”.


CONTROLS, PART 1 GENERAL, on Page 01500-10, delete “Paragraph 1.12 WWTP SITE

SECURITY” in its entirety.

23. Replace specification SECTION 01783 OPERATION AND MAINTENANCE MANUALS with

the specification located at the end of this addendum in Appendix B.

24. In the specification SECTION 01820 TRAINING, PART 1 GENERAL, 1.4 HOURS OF

TRAINING, A., on Page 01820-4, delete the table and replace with the following:

Equipment Name

Minimum

Hours per

Session

Minimum

Number of

Sessions

Gate and Operator and Controls 4 2

Mechanical Climber Screen (Grit 1) 4 2

Mechanical Chain and Rake Screen (Screenings and Grit

Facility)

8 2

Grit Pumps and Controls 2 2

Grit Vortex and Controls 2 2

Grit Classifiers and Cyclones 2 2

Odor Control Fans and Controls 4 2

Odor Control Equipment and Controls 4 2

Screenings and Grit Building HVAC Equipment 6 2

Screenings and Grit Building Boiler/Hot Water Equipment 6 2

Field Mounted Instrumentation - 2

Phosphate Analyzer 2 2

Refrigerated Sampler 2 2


Addendum No. 4 - 5 - 09/2018

Signaling and Fire Alarm 4 2

Sump Pumps 2 2

Boilers and Boiler Room Equipment 4 2

Condensing Units 2 2

Air Coils 2 2

Terminal Heat Transfer Units 2 2

Ductwork Accessories 2 1

Fans 4 2

HVAC Controls 8 5

Air Monitoring 4 2

Uninterruptible Power Supply Systems 4 4

Adjustable Frequency Drives 4 6

Electrical Monitoring System 4 4

Motor Control Center 4 4

Digital Video System 4 4

Fiber Optic Cables 2 1

25. In the specification SECTION 02150 BYPASS PUMPING, PART 1 GENERAL, 1.1

DESCRIPTION, B.1, on Page 02150-1, delete “Section 01300 - Submittals” and replace with

“Section 01330 - Submittals”.

26. In the specification SECTION 02150 BYPASS PUMPING, PART 1 GENERAL, 1.3 SYSTEM

DESCRIPTION, D.1.a, on Page 02150-3, delete “Division” in the first sentence and replace with

“Diversion”.

27. In specification SECTION 02251 SHORING,SHEETING AND BRACING, PART 1

GENERAL, 1.2 SUBMITTALS, B, on Page 02251-1, delete “ State where the construction will

be performed” in the first sentence and replace with “Commonwealth of Virginia”.

28. In the specification SECTION 02512 DISINFECTION, PART 1 GENERAL, 1.3 QUALITY

ASSURANCE, on Page 02512-1, after paragraph 1.3 C., add the following:

“1.4 SUBMITTALS

A. Provide all submittals in accordance with Division 1 requirements including the

following: pipe fill and drain procedures, equipment and apparatus including post

disinfection treatment and disposal of the pipe contents.”


Addendum No. 4 - 6 - 09/2018

29. In the specification SECTION 03100 CONCRETE FORMWORK, PART 1 GENERAL, 1.1

SUMMARY, A. Section Includes:, 1. Architectural ., on Page 03100-1, delete sub-section a and

replace with the following:

“a. Exterior walls exposed to view, down to 6 inches below finish grade.

b. Interior exposed walls, beams, columns and stairwells.

c. Exposed undersides of floor slabs, roof slabs and stairs”

30. In specification SECTION 03310 CAST-IN-PLACE-CONCRETE, PART 1 GENERAL, 1.1

SUMMARY, B. Architectural Concrete:, on Page 03310-1, delete sub-sections 2 to 3 and replace

with the following:

“2. Interior exposed walls, beams, columns and stairwells

3. Exposed undersides of floor slabs, roof slabs and stairs”

31. In the specification SECTION 05400 COLD-FORMED METAL FRAMING, PART 1

GENERAL, 1.4 SUBMITTALS, C. Structural Calculations:, on Page 05400-2, delete “state of

the project.” and replace with “Commonwealth of Virginia.”.

32. In the specification SECTION 05510 METAL GRATED STAIRS, PART 1 GENERAL, 1.4

SUBMITTALS, C., on Page 05510-2, delete “state” and replace with “Commonwealth”.

33. In the specification SECTION 05515 METAL PAN STAIRS, PART 1 GENERAL, 1.3 DESIGN

REQUIREMENTS, A. Delegated Design:, on Page 05515-1, insert “ registered in the

Commonwealth of Virginia” after the word “engineer,” in the sentence.

34. In the specification SECTION 05520, HANDRAILS AND RAILINGS, PART 2 PRODUCTS,

2.5 FABRICATION, on Page 05520-6, after paragraph H., add the following:

“I. Provide expansion joints or provisions for movement for railing and toe board sections greater

than 40 feet.”

35. In the specification SECTION 05520 HANDRAILS AND RAILINGS, PART 2 PRODUCTS,

2.5 FABRICATION, on Page 05520-6, delete paragraph numbers “I., J., K., L.” and replace as

“J., K., L., M.”.

36. In the specification SECTION 05531 METAL FLOOR GRATING AND PLATE, PART 1

GENERAL, 1.5 QUALIFICATIONS, A., on Page 05531-2, delete “State” and replace with

“Commonwealth”.

37. In the specification SECTION 09511 ACOUSTICAL CEILINGS, PART 1 GENERAL, 1.2

REFERENCES, on Page 09511-1, after paragraph 1.2 A. 5., add the following:


Addendum No. 4 - 7 - 09/2018

“1.3 SUBMITTALS

A. Provide all submittals in accordance with Division 1 requirements.”

38. In the specification SECTION 09511 ACOUSTICAL CEILINGS, PART 1 GENERAL, 1.3

SPARE PARTS, on Page 09511-1, delete paragraph number “1.3” and replace with “1.4”.

39. In the specification SECTION 10522 FIRE EXTINGUISHERS, PART 1 GENERAL, 1.2

QUALITY ASSURANCE, on Page 10522-1, after paragraph 1.2 A., add the following:

“1.3 SUBMITTALS

A. Provide all submittals in accordance with Division 1.”

40. In the specification SECTION 11287 STAINLESS STEEL SLIDE GATES, PART 2

PRODUCTS, 2.6 SLIDE GATE ELECTRIC MOTOR OPERATORS – NONMODULATING,

R. Push Buttons and Selector Switches:, on Page 11287-11, delete paragraph R. and add the

following:

“R. Local Display Module (LDM) Selector Switch and Push Buttons: Where the operator is 7

feet or less from the floor and in an accessible location, an LDM will be supplied. Local

operation shall be by an Open and Close control knob and a Local-Stop-Remote selector knob

with padlock capability in any position. Control knob shafts shall not penetrate the

display/control module cover. Control knob position detection shall use Hall effect devices.

Mechanical reed switches are not permitted. The actuator shall include three (3) long life-high

intensity LED type pilot lights to indicate valve open, opening, closed, closing, stopped, and

alarm conditions. Red & Green lights shall be reverse color programmable to indicate valve open

and valve closed position as specified. The amber LED light shall indicate valve stopped in mid-

position. The local operation, display and calibration of actuator shall be through a LDM with

LCD, liquid crystal display. For ease of operation the LDM shall be capable of being located

parallel to and adjacent to the handcrank or on the front of the actuator’s controls and

perpendicular to the handcrank. The LDM shall be capable of being rotated in ninety degree

increments for easier viewing. The liquid crystal display and LED lights shall be protected by an

explosionproof tempered lime glass window. Plastic windows are not acceptable.

S. Remote Display Module (RDM): An RDM shall be provided when the operator is more than

7 feet above the floor or in an inaccessible location and shall perform the same functions as the

local display module LDM. The RDM control knobs shall not penetrate the display/control

module cover. Control knob position detection shall use Hall effect devices. Mechanical reed

switches are not permitted. The RDM shall be connected to the actuator with four wires (two

wires for 24 Volts DC from actuator and two shielded twisted pair for RS-485 signal from the

actuator) and shall be capable of being located up to 4000 ft from the actuator. Each actuator

shall support a LDM, local display module and up to two RDMs. One RDM shall be powered

from the actuator’s 24 Volts DC power supply. The second RDM shall be powered from


Addendum No. 4 - 8 - 09/2018

customer’s 120 Volts AC power. Local and remote displays shall be highly visible. The LCD

viewing window shall be explosionproof rated tempered lime-glass window. Plastic windows

are not permitted. The RDM display shall be identical to the LDM display and shall allow

remote operation, diagnostics and set up same as the LDM. RDM and LDM shall be equipped

with safety sensing of each displays selector switch position. When either the RDM or the LDM

selector switch is in stop position the actuator shall not be capable of being run from either

location.”

41. In the specification SECTION 11288 STOP LOGS AND STOP GATES, PART 2 PRODUCT,

2.3 STOP LOGS AND APPURTENANCES, A. Stop Logs:, 1., on Page 11288-3, delete “on the

Drawings.” At the end of the sentence and replace with “at the end of this Section.”

42. In the specification SECTION 11306 NON-CLOG VORTEX PUMP, PART 1 GENERAL, 1.4

SUBMITTALS, B. Shop Drawings:, 5., on Page 11306-3, after the word “Information” add the

following:

“, including lubrication type and identify if motor bearings require lubrication.”

43. In the specification SECTION 11306 NON-CLOG VORTEX PUMP, PART 1 GENERAL, 1.6

SPARE PARTS, A. General:, on Page 11306-3, after sub-section 4., add the following:

“5. One pump lower bushing

6. One pump impeller and one pump volute”

44. In the specification SECTION 11306 NON-CLOG VORTEX PUMP, PART 2 PRODUCTS, 2.6

LUBRICATION, C. Lubrication Supply: on Page 11306-6, after the first sentence, insert

“Provide the lubrication identification for the oil contained in the oil reservoir. ” In the second

sentence delete the word “the” and replace with “each”.

45. In the specification SECTION 11306 NON-CLOG VORTEX PUMP, PART 2 PRODUCTS, 2.9

CONSTANT SPEED BELT DRIVE, A., on Page 11306-7, at the end of the paragraph insert

“Provide adequate quantity of v-belts per assembly including corresponding part numbers.”.

46. In the specification SECTION 11319 VORTEX GRIT REMOVAL SYSTEM, PART 1

GENERAL, 1.2 QUALITY ASSURANCE, B. Manufacturer’s Qualifications: on Page 11319-1,

insert “s” after the word “installation”.


GENERAL, 1.2 QUALITY ASSURANCE, B. Manufacturer’s Qualifications:, 1., on Page

11319-1, delete “a” in the second sentence and replace with “provided for”.



11319-1, delete “An” in the third sentence and replace with “A”.


Addendum No. 4 - 9 - 09/2018


GENERAL, 1.2 QUALITY ASSURANCE, B. Manufacturer’s Qualifications:, 1. b., on Page

11319-1, after the word “all” delete “ chamber is” and insert “chambers is greater than”.



11319-2, in the first sentence delete “an”.



11319-2, in the second sentence delete “in 1.2.E.” and replace with “specified in 1.3.E.”.


GENERAL, 1.2 QUALITY ASSURANCE, C. Coordination Responsibility:, 1., on Page 11319-

2, delete “11321 and 11306” and replace with “11306 and 11321”.


GENERAL, 1.3 SYSTEM DESCRIPTION, D., on Page 11319-3, delete “30 mgd” and replace

with “70mgd”.


GENERAL, 1.4 SUBMITTALS, E., on Page 11319-4, before paragraph E., add the following:

“E. Qualifications of manufacturer’s field service representative to supervise performance testing

of the vortex grit removal system equipment.”


GENERAL, 1.4 SUBMITTALS, E., on Page 11319-4, delete paragraph number “E.” and replace

as “F.”.


GENERAL, 1.4 SUBMITTALS, F., on Page 11319-4, delete paragraph F “ Seismic Anchorage

and Bracing:”.


GENERAL, 1.5 SPARE PARTS, A. General:, on Page 11319-4, after sub-section 3., add the

following:

“4. One year supply of motor grease and lubrication.

5. One grit chamber drive motor.”


PRODUCTS, 2.2 COMPONENTS, G. Grit Fluidizer: on Page 11319-5, in the second paragraph

after the word “heavy” insert “Type”.


Addendum No. 4 - 10 - 09/2018

59. In specification SECTION 11319 VORTEX GRIT REMOVAL SYSTEM, PART 3

EXECUTION, 3.1 MANUFACTURER’S SERVICES, on Page 11319-6, subsection A, in the

schedule under “Service” delete “Installation” and replace with “Concrete and Equipment

Installation”.

60. In specification SECTION 11319 VORTEX GRIT REMOVAL SYSTEM, PART 3

EXECUTION, 3.1 MANUFACTURER’S SERVICES, on Page 11319-6, subsection A, in the

schedule “Number of Trips” for Installation Service, delete “1” and replace with “3”.


EXECUTION, 3.1 MANUFACTURER’S SERVICES, on Page 11319-6, insert the following:

“B. Provide assistance during structural concrete placement to include observation, guidance

and coordination of construction joint locations and placement sequence to accommodate the

new Vortex Grit Removal equipment and maintain installation tolerances within acceptable

limits.”


EXECUTION, 3.3 FIELD QUALITY CONTROL, A. Manufacturer’s Field Service: on Page

11319-7, delete “manufacturers” in the first sentence and replace with “manufacturer”.


EXECUTION, 3.4 PERFORMANCE TESTING, A., on Page 11319-7, in the first sentence, after

the word “efficiency” insert a period(.), delete “and submitted to and reviewed and approved by

the ENGINEER” and replace with “ Submit to the ENGINEER for review and approval”.


EXECUTION, 3.4 PERFORMANCE TESTING, B. Head loss tests:, on Page 11319-8, at the end

of the paragraph, add the following:

“Range of flow between minimum and maximum specified in Paragraph 1.3.”

65. In the specification SECTION 11321 GRIT SEPARATION AND CLASSIFYING

EQUIPMENT, PART 1 GENERAL, 1.6 SPARE PARTS, on Page 11321-3, after subsection 4,

add the following:

“5. Two liners for the cyclone separator”.

66. Delete specification SECTION 11400 REFRIGERATED SAMPLER.

67. In the specification SECTION 13851 SIGNALING AND ALARM, on Page 13851-1, in the

section title, before the word “ALARM” insert “FIRE”.


Addendum No. 4 - 11 - 09/2018

68. In the specification SECTION 14650 CRANES AND HOISTING EQUIPMENT, 1.3 SYSTEM

DESCRIPTION, B. Performance Requirements:, 2. Gantry Crane:, on Page 14650-4, insert

“Rolling” before the word “Gantry”.

69. In the specification SECTION 14650 CRANES AND HOISTING EQUIPMENT, 1.3 SYSTEM

DESCRIPTION, B. Performance Requirements:, 2. Gantry Crane:, on Page 14650-4, in Table

“ITEM” delete “FSJ-1” and “FSJ-2” and replace with “RG-1” and “RG-2”.

70. In the specification SECTION 14650 CRANES AND HOISTING EQUIPMENT, PART 3

EXECUTION, 3.2 FIELD QUALITY CONTROL, A. Manufacturer's Field Service: on Page

14650-11, delete open and closed parenthesis in the paragraph.

71. Replace specification SECTION 15106 DUCTILE-IRON PIPE FITTINGS with the specification

located at the end of this addendum in Appendix B.

72. In the specification SECTION 15110 VALVES, PART 2 PRODUCT, 2.15 ELECTRIC MOTOR

OPERATORS - NONMODULATING, A. General: on Page 15110-16, delete open and closed

parenthesis in the paragraph.


OPERATORS - NONMODULATING, D. Open and Close Time Periods: on Page 15110-16,

delete “60 seconds” in the first sentence and replace with “30 seconds”.


OPERATORS - NONMODULATING, R. Push Buttons and Selector Switches:, on Page 15110-

18, delete paragraph R. and add the following:

“R. Local Display Module (LDM) Selector Switch and Push Buttons: Where the operator is 7

feet or less from the floor and in an accessible location, an LDM will be supplied. Local

operation shall be by an Open and Close control knob and a Local-Stop-Remote selector knob

with padlock capability in any position. Control knob shafts shall not penetrate the

display/control module cover. Control knob position detection shall use Hall effect devices.

Mechanical reed switches are not permitted. The actuator shall include three (3) long life-high

intensity LED type pilot lights to indicate valve open, opening, closed, closing, stopped, and

alarm conditions. Red & Green lights shall be reverse color programmable to indicate valve open

and valve closed position as specified. The amber LED light shall indicate valve stopped in mid-

position. The local operation, display and calibration of actuator shall be through a LDM with

LCD, liquid crystal display. For ease of operation the LDM shall be capable of being located

parallel to and adjacent to the handcrank or on the front of the actuator’s controls and

perpendicular to the handcrank. The LDM shall be capable of being rotated in ninety degree

increments for easier viewing. The liquid crystal display and LED lights shall be protected by an

explosionproof tempered lime glass window. Plastic windows are not acceptable.


Addendum No. 4 - 12 - 09/2018

S. Remote Display Module (RDM): An RDM shall be provided when the operator is more than

7 feet above the floor or in an inaccessible location and shall perform the same functions as the

local display module LDM. The RDM control knobs shall not penetrate the display/control

module cover. Control knob position detection shall use Hall effect devices. Mechanical reed

switches are not permitted. The RDM shall be connected to the actuator with four wires (two

wires for 24 Volts DC from actuator and two shielded twisted pair for RS-485 signal from the

actuator) and shall be capable of being located up to 4000 ft from the actuator. Each actuator

shall support a LDM, local display module and up to two RDMs. One RDM shall be powered

from the actuator’s 24 Volts DC power supply. The second RDM shall be powered from

customer’s 120 Volts AC power. Local and remote displays shall be highly visible. The LCD

viewing window shall be explosionproof rated tempered lime-glass window. Plastic windows

are not permitted. The RDM display shall be identical to the LDM display and shall allow

remote operation, diagnostics and set up same as the LDM. RDM and LDM shall be equipped

with safety sensing of each displays selector switch position. When either the RDM or the LDM

selector switch is in stop position the actuator shall not be capable of being run from either

location.”


OPERATORS - NONMODULATING, S. Limit and Torque Switches:, on Page 15110-18, delete

the paragraph number “S.” and replace with “T.”.


OPERATORS - NONMODULATING, T. Additional Accessories:, on Page 15110-19, before

paragraph T., insert the following:

“U. Circuit Breaker Module (CBM): Where shown, provide the operator with a NEMA 6P rated

CBM. The CBM shall interrupt the circuit between the actuator and the incoming power supply.

The CBM shall be mounted in a separate electrical compartment which is close-coupled to the

actuator.”


OPERATORS - NONMODULATING, T. Additional Accessories:, on Page 15110-19, delete the

paragraph number “T. and U.” and replace with “V.” and “W.”.

78. In the specification SECTION 15850 AIR OUTLETS AND INLETS, PART 3 EXECUTION,

3.2 INSTALLATION, D. Location: on Page 15850-8, delete “indicated on general construction

"Reflected Ceiling Plans"” and replace with “shown”.

79. In the specification SECTION 15946 AIR MONITORING, PART 2 PRODUCTS, 2.12

TRAINING, A., on Page 15946-17, delete “01670” in the second sentence and replace with

“01820”.


Addendum No. 4 - 13 - 09/2018

80. In the specification SECTION 16020 TEMPORARY ELECTRICAL SYSTEM, PART 1

GENERAL, 1.4 SYSTEM DESCRIPTION, C., on Page 16020-2, delete “Resident Engineer” in

the first sentence and replace with “City”.


GENERAL, 1.4 SYSTEM DESCRIPTION, C. 2., on Page 16020-2, delete “Resident Engineer’s

field office” and replace with “the City’s existing facilities”.


GENERAL, 1.4 SYSTEM DESCRIPTION, C. 3., on Page 16020-2, delete “- ” in the second

sentence.


GENERAL, 1.4 SYSTEM DESCRIPTION, on Page 16020-2, delete paragraph F.


GENERAL, 1.5 ENGINEERING REQUIREMENTS, B. 1., on Page 16020-2, delete “Resident

Engineer trailer complex” and replace with “City’s existing facilities”.


GENERAL, 1.5 ENGINEERING REQUIREMENTS, B. sub-section 5. on Page 16020-3, delete

the word “attached” and insert “located at the end of this section after the “Sketch 59-1.05B”.


GENERAL, 1.7 QUALITY ASSURANCE, E., on Page 16020-4, delete “Commissioner” in the

first sentence and replace with “Construction Manager”.


GENERAL, 1.7 QUALITY ASSURANCE, E., on Page 16020-4, delete “(as specified in 1.04F

hereinbefore)” in the second sentence and replace with “as specified in 1.4F hereinbefore”.


PRODUCTS, 2.1 ELECTRICAL SERVICE CONNECTION, A., Page 16020-4, after the first

sentence, insert “Coordinate location with the Construction Manager.”


PRODUCTS, 2.2 RACEWAYS AND WIRING, B., on Page 16020-5, delete “Commissioner” in

the second sentence and replace with “ENGINEER”.


EXECUTION, 3.2 OPERATION, A., on Page 16020-6, delete “each working day from 6:00

A.M. to 6:00 P.M., from Monday to Friday inclusive.” and replace with “continuously for the

duration of the work until permanent electrical facilities and service can be provided.”


Addendum No. 4 - 14 - 09/2018


EXECUTION, 3.2 OPERATION, on Page 16020-6, delete paragraph B.


EXECUTION, 3.4 REMOVAL, A., on Page 16020-6, delete “Commissioner” in the first

sentence and replace with “Construction Manager”.


EXECUTION, Sketch 59-1.05B, on Page 16020-7, delete the sketch and replace with the

following:


Addendum No. 4 - 15 - 09/2018

94. In the specification SECTION 16264 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS,

PART 1 GENERAL, 1.1 SUMMARY, B, sub-section 1. on Page 16264-1, delete “Section

01670” and replace with “01820”.

95. In the specification SECTION 16264 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS,

PART 3 EXECUTION, 3.2 FIELD QUALITY CONTROL, C. Manufacturer's Field Services: on


Addendum No. 4 - 16 - 09/2018

Page 16264-17, delete “Section 01670” at the end of the sentence and replace with “Section

01820”.

96. In the specification SECTION 16266 ADJUSTABLE FREQUENCY DRIVES, PART 1

GENERAL, 1.1 SUMMARY, B. 1., on Page 16266-1, delete “Section 01670” and replace with

“Section 01820”.


GENERAL, 1.7 SPARE PARTS AND SERVICE, B. General:, 1. d., on Page 16266-6, delete “,

indicating lights”.


GENERAL, 1.7 SPARE PARTS AND SERVICE, B. General:, 1. n., on Page 16266-6, after the

word “laptop”, insert “ including software license for City programming and troubleshooting.”


PRODUCTS, 2.3 COMPONENTS, C. Programmable Controller:, on Page 16266-9, delete

“Section 13400 Instrumentation” and replace with “Sections 13451 and 13453”.


EXECUTION, 3.2 FIELD QUALITY CONTROL, C. Manufacturer’s Field Services

Representative: on Page 16266-12, delete “Section 01670” at the end of the sentence and

replace with “Section 01820”.

101. In the specification SECTION 16291 ELECTRICAL MONITORING SYSTEM, PART 1

GENERAL, 1.1 SUMMARY, B. 1., on Page 16291-1, delete “Section 01670” and replace with


102. In the specification SECTION 16445 MOTOR CONTROL CENTERS, PART 1 GENERAL,

1.1 SUMMARY, B. 1., on Page 16445-1, delete “Section 01670” and replace with “Section

01820”.

103. In the specification SECTION 16752 DIGITAL VIDEO SYSTEM, PART 1 GENERAL, 1.1

SECTION INCLUDES, B. 1., on Page 16752-1, delete “Section 01670” and replace with



REFERENCE ABBREVIATIONS, A. sub-section 2. on Page 16752-2, delete “DVRS” and

replace with “DVMRS”.


SYSTEM DESCRIPTION, B., on Page 16752-2, delete “DVRS” in the first sentence and

replace with “DVMRS” .


Addendum No. 4 - 17 - 09/2018


SYSTEM DESCRIPTION, B., on Page 16752-2, delete “engineering” in the last sentence and

replace with “contract” .

107. In the specification SECTION 16752 DIGITAL VIDEO SYSTEM, PART 3 DELIVERY,

STORAGE, AND HANDLING, 3.6 FIELD SERVICES, A. Manufacturer’s Representative:, on

Page 16752-13, delete “Section 01670” in the fourth sentence and replace with “Section 01820.”

108. In the specification SECTION 17020 MODIFICATIONS TO EXISTING PLANT PCS

SYSTEM, PART 3 EXECUTION, 3.6 TESTS, B., on Page 17020-9, delete “Section 01650”

and replace with “Section 01655”.

109. In the specification SECTION 17143 PROCESS CONTROL SYSTEM FACTORY

ACCEPTANCE TESTING, PART 1 GENERAL, 1.1SUMMARY, B, delete the word “weeks”

in the last sentence and replace with the word “months”.


ACCEPTANCE TESTING, PART 1 GENERAL, 1.1 SUMMARY, I. 2., on Page 17143-2,

delete “Section 01670” and replace with “Section 01820”.


ACCEPTANCE TESTING, PART 1 GENERAL, 1.2 SUBMITTALS, B., on Page 17143-2,

delete “Section 40 90 00” and replace with “Section 17200”.

112. In specification SECTION 17166 PROCESS CONTROL SYSTEM COMMISSIONING, PART

1 GENERAL, 1.1 SUMMARY,C, sub-section 2, on Page 17166-1, delete “Section 01670” and


113. In the specification SECTION 17166 PROCESS CONTROL SYSTEM COMMISSIONING,

PART 2 SITE ACCEPTANCE TESTING, 2.4 PURPOSE AND SCOPE, A., on Page 17166-6,

delete “s” from the word “Staffs” in the first sentence.


PART 3 EXECUTION, 3.3 DEFECT HANDLING, A., on Page 17166-10, delete “changes” in

the first sentence and replace with “modifications or adjustments”.


PART 3 EXECUTION, 3.3 DEFECT HANDLING, E. and F., on Page 17166-11, delete

“Change Requests” and replace with “Request for Modifications”.


PART 3 EXECUTION, 3.3 DEFECT HANDLING, F., on Page 17166-11, delete “change

request” and replace with “Request For Modifications”.


Addendum No. 4 - 18 - 09/2018

117. In the specification SECTION 17176 PROCESS CONTROL SYSTEM TRAINING, PART 1

GENERAL, 1.1 REQUIREMENTS AND RESPONSIBILITIES, F. and G.2., on Page 17176-1,

delete “Section 01670” and replace with “Section 01820”.

118. In specification Section 17176 PROCESS CONTROL SYSTEM TRAINING, PART 1

GENERAL, 1.1 REQUIREMENTS AND RESPONSIBILITIES, G.6 on Page 17176-2, insert

the word “Refrigerated” before Sampler.


GENERAL, 1.2 SUBMITTALS, B., on Page 17176-2, delete “ within 180 days of the effective

date of the Notice to Proceed,”.


GENERAL, 1.3 ON-SITE TRAINING, D. Generic Training Requirements:, 1., on Page 17176-

2, delete “Section 01670” and replace with “Section 01820”.


EXECUTION, 3.1 TRAINING, A., on Page 17176-5, delete “Section 01670” and replace with


122. In the specification SECTION 17299 PROCESS CONTROL SYSTEM INPUT/OUTPUT LIST,

PART 1 GENERAL, 1.1 DESCRIPTION, B., 2., on Page 17299-1, delete “Section 01670” and


123. In the specification SECTION 02251 SHORING, SHEETING AND BRACING, PART 3

EXECUTION, 3.1 SHORING, SHEETING AND BRACING INSTALATION, after G. add the

following:

“H. Prior to the start of installation of excavation support systems, the Contractor shall

perform a field survey including photographs as necessary to record existing

conditions at the site. During construction, the Contractor shall provide monitors and

record information to detect any movement of the excavation support system and

adjacent utilities and structures. Monitoring devices shall be installed at all adjacent

utilities and existing structures to the new Screen and Grit Removal Building. The

monitoring program and information recorded therefrom shall be designed and sealed

by the registered Professional Engineer retained by the Contractor for excavation

support systems work and submitted weekly for the Engineer's records.”


Addendum No. 4 - 19 - 09/2018

PART 3: CHANGES TO CONTRACT DRAWINGS

1. On Cover Sheet change OWNER “CONTRACT” INFORMATION to OWNER “CONTACT”

INFORMATION.

2. On Drawing AG2, revise the location of the Guard Shack by deleting the two Guard Shack

locations shown adjacent the Temp Contractor Trailer, Parking and Laydown Area and east of

the new Diversion Chamber and relocate a single Guard Shack south of Supplemental Pumping

Station at the East Construction Entrance off the Access Road.

3. On Drawing AG4, delete the TEMP GUARD SHACK SEE NOTE 5 from Detail 2/AG4 –

Erosion and Sediment Control Practices. Delete Note 5 and renumber following notes

accordingly.

4. On Drawing AG5, Detail 1/AG5 – Erosion and Sediment Control Practices locate Temporary

Guard Shack near the Inlet Protection shown in the south east quadrant and include label

“APPROXIMATE LOCATION OF TEMP GUARD SHACK SEE NOTE 4”.

5. On Drawing AG8, in the last sentence of Note 2, replace the Specification reference from

“02220” to” 01500”. In the last sentence of Note 8 replace “State” with “Commonwealth”.

6. On Drawing AG9, replace Note 3 with “3. Contractor shall install signs previously removed

during demolition. Refer to DWG AG8. Contractor shall coordinate location of signs with

Owner.”

7. On Drawing AG9, delete location and reference to Temp Guard Shack shown north and east of

the New Diversion Chamber.

8. Replace Drawing AG12 with revised Drawing AG12 located in Appendix C at the end of this

Addendum.


Addendum.

10. In Profile 1 on Drawing AG16, label manhole located at Station 11+61.56 “MH 1”. In Profile 2,

label manholes located at Station 10+27.50 and Station11+00.59 “MH2” and “MH 3”

respectively.

11. In Profile 3 on Drawing AG17, label manhole located at Station 10+42.97 “MH4”.

12. In Profile 4 on Drawing AG18, label manholes located at Station 10+72.35, Station 12+57.14,

Station 13+48.69 and Station 13+82.03 “MH5”, “MH6”, “MH7” and “MH8” respectively.

13. On Drawing AG19, in the last sentence of Note 2, replace the Specification reference from

“01330” to “01335”.


Addendum No. 4 - 20 - 09/2018

14. In the Influent Pipe Plan on Drawing AG20, label the new manhole on the New 8” Sanitary

Sewer “New MH1” and the new manhole on the New 8” Drain “New MH8”.


Addendum.

PART 3: REPLIES TO QUESTIONS

1. We respectfully request the engineer to add Perry Fiberglass Products, Inc / Envirogen

Technologies to Section 11395 Odor Control Equipment: Bio-towers Part 2.01.

Reply 1: We already have designed the Odor Control Equipment around two manufacturers

systems. The IFB contains provisions for submission of equivalent equipment from

other manufacturers. However, at this stage of the project, the burden is with the

manufacturer and bidding general contractors to determine the suitability of any

proposed alternate equipment manufacturer’s system and weigh potential impacts to

other aspects of the project design such as: will the equipment fit in the space available,

does the change impact other portions of the design such as electrical and

instrumentation, does the alternative equipment provide the same or better performance

that the design basis equipment, does the alternate equipment have equivalent or better

life cycle costs and maintenance and parts support, etc. To ensure a level playing field

for bidders, we require that the base bid be based upon using one of the specified

equipment manufacturers and models. It should be pointed out that there is a cost to

the City to have our engineering consultants evaluate any proposed alternative

equipment, therefore alternate equipment submittals that are not properly and

thoroughly documents will generally not be approved. Due to the cost of evaluating

alternative equipment, this step is done after bids are opened and the prospective low

responsive and responsible bidder is determined.

Please refer to the IFB N0. T180022483 Project Book, under Bid Form, Instruction to

Bidders: (page 8 of 66) (1), for the procedure to submit an “Or Equal” to the named

equipment in the Major Equipment Schedule. Please also refer to specification

SECTION 1600 MATERIAL AND EQUIPMENT, PART 1 GENERAL, 1.4”OR

EQUAL” SUBMITTAL.

2. Regarding the subject project specification section 151062.2.k.3 indicates all DI Grit pipe and

fittings are to have Pro401 lining or equal whereas, the Pipe Schedule in section 15109 pg. 9

indicates the Grit pipe is to be Glass lined. Which is correct?

Reply 2: See PART 2: CHANGES TO SPECIFICATIONS, Item No. 71.

Documents

ADDENDUM NO. 4 INVITATION FOR BID: CSO Control Program … · 2018-09-27 · 7. In the specification SECTION 01335 LIMITATIONS ON SEQUENCE OF CONSTRUCTION, PART 1 GENERAL, 1.4 LIMITATIONS