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McGhee Engineering, Inc. Central City, Kentucky Wastewater Treatment Plant Expansion ADDENDUM No. 5 September 14, 2018 This ADDENDUM to plans, specifications and bidding documents for the subject project modifies the referenced items to the extent described herein. Items not modified by this ADDENDUM remain unchanged and in full effect. Bidders are required to acknowledge receipt of this ADDENDUM on the Bid Form. Specifications 1. Bid Date The bid date and time is changed to Wednesday, September 26, 2018 at 3:00 pm. 2. Contract Time The contract time allowed for substantial completion is changed to 540 calendar days. The contract time allowed for final completion is changed to 600 calendar days. 3. Kentucky Division of Water Approval Letter and Expansion Permit Add attached documents. Contractor is required to comply with the conditions of the permit. 4. Contract Considerations Article 1.03 Testing allowance MAY be used for concrete compressive strength test cylinders. 5. Section 13120 Metal Building System Influent Pump Station Article 1.01 Remove interior liner panel furnishing and installation requirement. 6. Section 02510 Asphalt Concrete Paving Article 3.01.H.1 Delete Subbase Course (9-inches of No. 3 stone) requirement.

ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

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Page 1: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

McGhee Engineering, Inc.

Central City, Kentucky

Wastewater Treatment Plant Expansion

ADDENDUM No. 5 September 14, 2018

This ADDENDUM to plans, specifications and bidding documents for the subject project modifies the referenced items to the extent described herein. Items not modified by this ADDENDUM remain unchanged and in full effect. Bidders are required to acknowledge receipt of this ADDENDUM on the Bid Form.

Specifications

1. Bid Date The bid date and time is changed to Wednesday, September 26, 2018 at 3:00 pm.

2. Contract Time The contract time allowed for substantial completion is changed to 540 calendar days. The contract time allowed for final completion is changed to 600 calendar days.

3. Kentucky Division of Water Approval Letter and Expansion Permit Add attached documents. Contractor is required to comply with the conditions of the permit.

4. Contract Considerations – Article 1.03 Testing allowance MAY be used for concrete compressive strength test cylinders.

5. Section 13120 – Metal Building System – Influent Pump Station – Article

1.01 Remove interior liner panel furnishing and installation requirement.

6. Section 02510 – Asphalt Concrete Paving – Article 3.01.H.1

Delete Subbase Course (9-inches of No. 3 stone) requirement.

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7. Section 11320 – Grit Removal System Contractor shall supply any external seal water flush piping, valving and pressure regulation required by the supplied equipment. Water supplied shall be from the plant non-potable water system. Change the grit pump minimum inlet and outlet sizes to 4 and 3 inches respectively.

8. Section 02600 and 15020 – Ductile Iron Pipe

Clarification of pipe requirements:

1. All ductile iron pipe shall be pressure class 250 or higher, except for flanged pipe, which shall be Class 53.

2. All ductile iron pipe shall be cement lined, except for grit lines, waste sludge lines, and scum lines, which shall be glass lined.

3. All ductile iron pipe in pressurized applications (as opposed to gravity sewers and drains) with push-on mechanical type joints, except for the discharge force main, shall have joint restraint at all joints. Joint restraint may be fabricated mechanical type joint restraint, restraining glands, or restraining gaskets in push-on joints.

4. The discharge force main shall have joint restraint at bends and fittings as indicated on the plans. Joint restraint may be fabricated mechanical type joint restraint, restraining glands, or restraining gaskets in push-on joints.

9. Bid Form – Supplemental Items Replace the Bid Form with the attached revised Bid Form. Supplemental unit prices have been added to allow adjustment of influent sewer base bid quantity of 1716 LF and effluent base bid quantity of approximately 12,265 LF.

10. Table of Contents

Delete reference to Section 05502. Note that slide gates are specified in Section 02642.

11. Supplementary Conditions - Page 11 of 25 SC-7.18 Indemnification

Supplementary Conditions Page 11 of 25 – Add paragraph E after D at the end of section SC-7.18

“E. In paragraphs 7.18. A through D as may be amended by the Supplementary

Conditions, ENGINEER shall also include Strand Associates, Inc.”

12. Sewage Gates - Section 02642

This section is slide gate specification. There is no section 05502 as listed in the table of contents.

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McGhee Engineering, Inc.

13. Cast-In-Place Concrete - Section 03300

Section 03300 3.12 WATER TEST – Clarified plant effluent water may be used in water testing. Contractor will be responsible for the cost of pumping of effluent water from the effluent wet well to the tested structure.

14. Stop Gates - Section 05501

Add attached Section 05501 - Stop Gates to the Specifications. This section was missing from the bidding documents.

15. Final Clarifier Collector - Section 11337

Section 11337 2.10 INFLUENT FLOCCULATION WELL – Replace entire section 2.10 A with the following section. 2.10 INFLUENT FLOCCULATION WELL

A. The influent flocculation well, fabricated of minimum 3/16-inch steel plate sections with bolted connections, shall be supported from the gear and drive mechanism. The well shall be minimum 14.75-foot diameter and 5-foot side depth. The well shall be submerged to permit the escape of scum.

16. Final Clarifier Collector - Section 11337

Section 11337 2.15 WEIR, BAFFLE AND MISCELLANEOUS – Replace Paragraph A with the following:

a. Effluent weirs and scum baffles complete with anchors and brackets are specified

in Section 5500-Metal Fabrications. Details of weirs and baffles to show locations and elevations required by the equipment, including scum beach connecting shall be provided by the clarifier manufacturer to Division 5 Contractor. The weirs shall be as shown on the drawings.

17. Oxidation Ditch Aeration System - Section 11376

Section 11376 1.04 QUALITY ASSURANCE – Replace entire section 1.04 with the following section. 1.04 QUALITY ASSURANCE

A. The aeration equipment shall consist of four complete rotary aerator assemblies per ditch to span the channels, as shown on the drawings. The rotary aerators shall be designed for operation at a controlled disc submergence of 12 to 23 inches so that the oxygen transfer rate and power requirements can be varied with the flow and treatment requirements.

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McGhee Engineering, Inc.

B. Performance:

Aeration Requirements:

a. The rotary aerator assemblies to be furnished and installed on the aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen

values are measured at Standard Operating Requirements of 20C and 760 mm Hg.

b. Design Standard Oxygen Transfer Requirements (total pounds O2/hour) based on a rotational speed of 43 rpm and 21-inch disc immersion:

Unit Number HP Outer Most Channel

Outer Channel Middle Channel Inner Channel

No. of Discs

Delivery lb/O2/hr

No. of Discs

Delivery lb/O2/hr

No. of Discs

Delivery lbO2/hr

No. of Discs

Delivery lbO2/hr

ODE-30-01 ODE-30-02

20 ------ ------ ------ ------ 7 17.5 5 12.5

ODE-30-03 ODE-30-04

40 12 30 12 30 ------ ------ ------ ------

TOTAL 120 24 60 24 60 14 35 10 25

Maximum Standard Oxygen Transfer Requirements (pounds O2/hour) based on a rotational speed of 52 rpm and 23-inch disc immersion

Unit Number HP Outer Most Channel

Outer Channel Middle Channel Inner Channel

No. of Discs

Delivery lb/O2/hr

No. of Discs

Delivery lb/O2/hr

No. of Discs

Delivery lbO2/hr

No. of Discs

Delivery lbO2/hr

ODE-30-01 ODE-30-02

20 ------ ------ ------ ------ 7 31.4 5 22.5

ODE-30-03 ODE-30-04

40 12 53.9 12 53.9 ------ ------ ------ ------

TOTAL 120 24 107.8 24 107.8 14 62.8 10 45

a. 11376 2.02.C. – Change a liquid level variation of 12” to 11”.

b. 11376 2.03.A.2. – Change “24 inches” to “23 inches”.

c. 11376 2.03.A.3. – Replace the sentence with “The aerator control system will be provided by the system integrator as noted in section 16940.”

d. 11376 2.03.B. – Change “62.5 lbs O2/hr” to “60 lbs O2/hr”.

e. 11376 2.03.C.2. – Change “seventy-four” to “seventy-two”.

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McGhee Engineering, Inc.

f. 11376 2.03.D.3. – Replace the paragraph with the following “Shafts to

be blast cleaned per SSPC-SP10-63. Shafts shall be supplied with sand coat finish utilizing Sherwin Williams Dura-Plate 235 B67A235 Haze Gray and Uniblast 2.2 sand.”

g. 11376 3.02.B. –Delete entire paragraph 3.02B.

18. Shaftless Screw Conveyor - Section 14551

a. Section 14551 2.2 H – Slide Gates paragraph 1. Add the following sentence to the end of paragraph 1 “Compressed air shall be supplied from a compressor provided in section 11361 Screw Press specification”.

b. Section 14551 2.2 H – Slide Gates paragraph 4. Change “4-way air control valve” to “NEMA 4X 4-way solenoid air control valve”.

19. Controls and Instrumentation - Section 16940

a. Change the automatic dialer from Raco, Verbatim Series VSS, to Raco Verbatim Gateway.

b. CLARIFICATION: Provide a 1 concurrent user license for both the Hach WIMS and Hach JobCal Plus software.

20. Controls and Instrumentation - Section 16940 - 2.08 - Page 16940-30

a. Section 16940 2.08 A - Delete the last sentence of this paragraph. The meter shall

be NEMA 4X construction. The meter shall not be intrinsically safe.

b. Section 16940 2.08 I - Magnetic flow meters within Class I, Division 1 Groups C and D locations shall be Endress and Hauser ProMag 500P, or equal. Magnetic flow meter flow tubes in hazardous locations shall be rated for the space and the associated magnetic flow meter transmitter shall be located in a non-rated space.

21. Controls and Instrumentation - Section 16940 - 3.09.B - Page 16940-54

a. Replace the control description for sludge pumps (DSLP-75-01 and DSLP-75-02) with the following: “B. The Sludge Pumps (DSLP-75-01 and DSLP-75-02) shall each be controlled

from this PLC with a SCADA Hand-Off-Auto selector switch as follows: 1. In SCADA “Hand”, the pump shall start and run continuously.

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2. In SCADA “Auto”, the pump shall be controlled based on a “call-to-run”, “demand sludge flow”, and “actual sludge flow” signals provided by the Screw Dewatering Press Control Panel PLC via Ethernet as follows: a. Only one sludge pump shall be allowed to operate at a time. The

operator shall select which pump to operate and the unselected pump shall be inoperable. In the event the “call-to-run” signal is received from the Screw Dewatering Press Control Panel PLC the selected pump shall start and run at the pumps minimum speed for an operator-adjustable start time delay (0 to 30 seconds). Once the start time-delay expires the pump speed shall be controlled to have the “actual sludge flow” and the “demand sludge flow” be equal. In the event the “actual sludge flow” is below the “demand sludge flow” the sludge pump speed shall increase. In the event the “actual sludge flow” is above the “demand sludge flow” the pump speed shall decrease.

b. Provide sludge pump running indication to the Screw Dewatering Press Control Panel PLC.”

22. SCADA System I/O Listing - Section 16990

a. Add the following to the “SCADA System I/O Listing - SCC-80” from the Screw Press Dewatering Control Panel to SCC-80 PLC via Ethernet. - Sludge Pump Call-To-Run (DI). - Demand Sludge Flow (AI). - Actual Sludge Flow (AI). - Conveyor 2 Slide Gate 1 Opened (DI). - Conveyor 2 Slide Gate 1 Closed (DI). - Conveyor 2 Slide Gate 1 In Auto (DI). - Conveyor 2 Slide Gate 1 Position Fail (DI). - Conveyor 2 Slide Gate 2 Opened (DI). - Conveyor 2 Slide Gate 2 Closed (DI). - Conveyor 2 Slide Gate 2 In Auto (DI). - Conveyor 2 Slide Gate 2 Position Fail (DI).

b. Add the following to the “SCADA System I/O Listing - SCC-80” from the SCC-

80 PLC to the Screw Press Dewatering Control Panel via Ethernet. - Sludge Pump Running (DO).

c. Remove the following I/O from the “SCADA System I/O Listing - SCC-80”: - Sludge Pump in Auto. - Sludge Pump Running. - Sludge Pump Overload.

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McGhee Engineering, Inc.

- Sludge Pump Overtemperature. - Sludge Pump Fault. CLARIFICATION: The sludge pumps are located in Structure 75 - Digester Building and the pump statuses are connected to SCC-75 PLC.

17. Specification Section 11340 – Peracetic Acid Feed System

Add Flomotion Systems as an approved supplier. Drawings

1. Index of Drawings

Replace Drawing 00-G-02 with Drawing 00-G-02R. Note that several drawings were added.

2. Title Sheet

The attached title sheet drawing index has been modified to show the addition or revision of the drawings (75-ASM-01 and 30-ASM-01) mentioned below. Please replace the previous title sheet drawing with the attached version.

3. Sheet 30 – Degritter Structural Details 25-ASM-05 – Detail C Influent Channel Section Wall Height is shown incorrectly. Change 8’-8” and 7’-8” dimensions to 9’-2” and 8’-2” respectively.

4. Sheet 13 – Site Grading & Drainage 05-C-03

a. Replace “Remove Existing Chain Link Fence and Replace with 125 LF of

New Chain Link Fence per detail C, Sheet 05-C-07, Profile Shown on Detail C, Sheet 05-C-06” with “Remove Existing Chain Link Fence and Replace with 125 LF of New Chain Link Fence per detail C, Sheet 05-C-05”

b. Replace “Proposed 12’ Wide Access Drive Per Detail B, Sheet 05-C-07” with “Proposed 12’ Wide Access Drive Per Detail B, 05-C-05”

c. Replace “Install Steps Per Detail H, Sheet 05-C-07” with “Install steps Per Detail H, Sheet 05-C-05”

d. Replace “Proposed 12’ Wide 222 LF Access Drive Per Detail B, Sheet 05-C-07” with “Proposed 12’Wide 222 LF Access Drive Per Detail B, 05-C-05”

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McGhee Engineering, Inc.

5. Influent Lift Station & Screen Structural Sections 3 – 10-ASM-08 Replace all proposed “Type C Foundation” designations with “Type B Foundation”. Type B foundation detail can be found on sheet 10-ASM-09, detail E.

6. Floor Penetration Detail Sheet– 75-ASM-03

Add the attached sheet 75-ASM-03.

7. Hydraulic Profile Drawing 00-G-08 – Hydraulic profile - Change oxidation ditch discharge weirs elevation from “418.05” to “417.70” and the oxidation ditch channel no.4 water surface level from “418.50” to “418.16”.

8. Yard Piping

Drawing 05-C-04–Yard Piping - Clarification - The 24-inch grit influent pipe is shown incorrectly on drawing 05-C-04. Refer to drawing 25-ASM-01 for the correct layout of the 24-inch grit influent pipe.

9. Oxidation Ditch

a. Drawing 30-D-01 - Replace Drawing 30-D-01 with Drawing 30-D-01R. Note that demolition note “U” was added.

b. Drawing 30-D-02 - Replace Drawing 30-D-02 with Drawing 30-D-02R. Note that demolition note “V” was added.

c. Drawing 30-ASM-01 - Replace Drawing 30-ASM-01 with Drawing 30-ASM-

01R. Note that three additional slide gates were added.

d. Drawing 30-ASM-03 - Replace Drawing 30-ASM-03 with Drawing 30-ASM-03R. Note that three additional slide gates were added.

e. Drawing 30-ASM-04 - Replace Drawing 30-ASM-04 with Drawing 30-ASM-04R. Note that the sluice gate changed to slide gate.

f. Drawing 100-ASM-03 - Delete sluice gate detail B/100-ASM-03. g. Drawing 100-ASM-03 - Replace the table in detail C/100-ASM-03 with the

following table. Note that four additional slide gates ware added in oxidation ditch structure.

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McGhee Engineering, Inc.

10. Final Clarifier Splitter Boxes

a. Drawing 35-ASM-01 - Change oxidation ditch discharge weirs elevation from “418.05” to “417.70”.

b. Drawing 35-ASM-02 - Change oxidation ditch discharge weirs elevation

from “418.05” to “417.70”.

1. RAS and Scum Pump Station Electrical Plans - Sheet 52 - 50-E-01 a. Change general note 1 to the following:

“All electrical work and equipment within RAS wet well and Scum wet well shall be rated Class I, Division 1, Groups C and D locations. All electrical work and equipment within the WAS Valve Vault shall be rated Class I, Division 2, Groups C and D location.” Clarification: The WAS Valve Vault is the east vault on the plans. The Scum wet well is the southwest wet well on the plans. The RAS wet well is the northwest wet well on the plans.

b. General Note 2 Clarification: The WAS Valve Vault access hatch should not be included in the Class I, Division 2 Groups C and D envelope definition.

11. Sludge Dewatering Building Electrical Plan - Sheet 75- 80-E-01

c. Add the following items adjacent to Conveyor No. 2:

- SV-80-06 and SV-80-07. - ZS-80-05, ZS-80-06, ZS-80-07, and ZS-80-08.

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McGhee Engineering, Inc.

d. Add the following items adjacent to the Container Handling System Control Panel on the same control station mounting:

- CS-80-01 and CS-80-02.

12. Electrical Schedules - 1 - Sheet 107- 100-E-09

a. Remove the following items from the Screw Press Dewatering

Equipment Conduit and Wiring Schedule: - Sludge Pump Drive Motor, 3~#12 and ground in 3/4” conduit. - Sludge Pump High Discharge Pressure Switch, 2~#14 and ground in 3/4” conduit. - Sludge Pump Motor T-Stats, 2~#14 and ground in 3/4” conduit. CLARIFICATION: The sludge pumps are located in Structure 75 - Digester Building and the pump statuses are connected to SCC-75 PLC.

b. Add the following items to the Screw Press Dewatering Equipment Conduit and Wiring Schedule:

- Conveyor 2 Slide Gate 1 Solenoid Valve. Provide 2~#14 and ground

in 3/4” conduit from the Screw Dewatering Control Panel to Conveyor 2 Slide Gate 1 Solenoid Valve (SV-80-06).

- Conveyor 2 Slide Gate 1 Open/Close Status. Provide 4~#14 and

ground in 3/4” conduit from the Screw Dewatering Control Panel to Conveyor 2 Slide Gate 1 open and close limit switches (ZS-80-05 and ZS-80-06).

- Conveyor 2 Slide Gate 1 O-C-A Control. Provide 6~#14 and ground in

3/4” conduit from Screw Dewatering Control Panel to Conveyor 2 Slide Gate 1 Open-Close-Auto Control Station (CS-80-01).

- Conveyor 2 Slide Gate 2 Solenoid Valve. Provide 2~#14 and ground

in 3/4” conduit from the Screw Dewatering Control Panel to Conveyor 2 Slide Gate 2 Solenoid Valve (SV-80-07).

- Conveyor 2 Slide Gate 2 Open/Close Status. Provide 4~#14 and

ground in 3/4” conduit from the Screw Dewatering Control Panel to Conveyor 2 Slide Gate 2 open and close limit switches (ZS-80-07 and ZS-80-08).

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McGhee Engineering, Inc.

- Conveyor 2 Slide Gate 2 O-C-A Control. Provide 6~#14 and ground in 3/4” conduit from Screw Dewatering Control Panel to Conveyor 2 Slide Gate 2 Open-Close-Auto Control Station (CS-80-02).

Page 12: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

EJCDC® C-410, Bid Form for Construction Contracts. Copyright © 2013 National Society of Professional Engineers, American Council of Engineering Companies,

and American Society of Civil Engineers. All rights reserved. Central City Water & Sewer Page 4 of 6 January 2017

J. Effluent Pumps

K. Generator/ATS

M. MCCs

N.

SCADA Integrator

5.02 The prices shall include all labor, materials, (all excavation is bid unclassified and will not constitute any

additional cost to OWNER if rock is encountered), overhead, profit, insurance, and other costs necessary to cover the finished work of the several kinds called for.

5.03 Bidder acknowledges that (1) the Lump Sum Bid Price includes an amount considered by Bidder to be adequate to cover Contractor’s overhead and profit for each separately identified item, and (2) estimated quantities are not guaranteed, and are solely for the purpose of comparison of Bids, and final payment for all unit price Bid items will be based on actual quantities, determined as provided in the Contract Documents.

5.04 SUPPLEMENTAL UNIT PRICES: The following Supplemental Unit Prices will apply in the event that

additions to or deductions from the work required in the Bid are ordered. A single price shall be bid for each item. OWNER reserves the right to accept or reject these prices by inclusion in or omission from the Contract Documents to be executed after the award of the Contract.

Item

Type of Work Unit Supplemental Unit Price (Words) (Numbers)

1. Earth Excavation CY . Dollars $ .

(Section 02-222)

Remove and Replace Unsuitable

2. Foundation Material for Structures, Roads and Basins

CY . Dollars $ .

(Section 02-222)

Remove and Replace Unsuitable

3. Foundation Material for Utility Trenches CY . Dollars $ .

(Section 02-225)

4.

24-inch Influent Sewer Pipe Installation

LF

.

Dollars

$ .

5.

14-inch Effluent Force Main Installation

LF

.

Dollars

$ .

ARTICLE 6 – TIME OF COMPLETION 6.01 Bidder agrees that the Work will be substantially complete and will be completed and ready for final

payment in accordance with Paragraph 15.06 of the General Conditions on or before the dates or within the number of calendar days indicated in the Agreement.

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KentuckyUnbridledSpirit.com An Equal Opportunity Employer M/F/D

MATTHEW G. BEVIN

GOVERNOR CHARLES G. SNAVELY

SECRETARY

ENERGY AND ENVIRONMENT CABINET

DEPARTMENT FOR ENVIRONMENTAL PROTECTION

300 SOWER BOULEVARD

FRANKFORT, KENTUCKY 40601

AARON B. KEATLEY

COMMISSIONER

June 30, 2017

Barry Shaver

City of Central City

321 W Reservoir Ave

Central City, KY 42330 Re: Central City WWTP Expansion Muhlenberg County, Kentucky Central City WWTP Activity ID #: 3218, APE20170001 Receiving Treatment Plant KPDES #: KY0023540 Dear Mr. Shaver:

We have reviewed the plans and specifications for the above referenced project. The plans include

the expansion of the existing WWTP from 1.2 MGD to 1.8 MGD including the construction of the

following:

- Influent Screens,

- Influent Pump Station,

- 2 Pumps Capable of 1,250 gpm at 50 ft TDH

- 2 Pumps Capable of 3,725 gpm at 55 ft TDH

- Magnetic Flow Meter,

- Degritting System,

- Additional 1.5 million gallon concentric channel to the existing Orbal Oxidation Ditch,

- Eighty two feet diameter Clarifier,

- RAS,

- 2 Pumps Capable of 1,125 gpm

- Scum Pump Station,

- 2 Pumps Capable of 120 gpm

- Ultraviolet Disinfection,

- Peracetic Acid Disinfection to supplement the UV Disinfection,

- Upgrade of the UV system to an 8.0 MGD UV system,

- Effluent Pumps,,

- 4 Pumps capable of 2,075 gpm at 180 ft TDH

- Splitter Box,

- Sludge Dewatering Screw Press,

- Approximately 11,855 LF of 14-inch DI effluent piping,

- 1,716 linear feet of 24 inch DI gravity sanitary sewer line, and

- Miscellaneous Improvements.

Issuance of this permit does not relieve the permittee from the responsibility of obtaining any other

permits or licenses required by this Division of Water and other state, federal, and local agencies. Be

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cautioned that approval of the discharge permit may result in required construction design changes.

This is to advise that plans and specifications for the above referenced project are APPROVED with

respect to sanitary features of design, as of this date with the requirements contained in the attached

construction permit.

If we can be of any further assistance or should you wish to discuss this correspondence, please

do not hesitate to contact Daniel Kulik at 502-782-6998.

Sincerely,

Terry Humphries, P.E.

Supervisor, Engineering Section

Water Infrastructure Branch

Division of Water

TH / DK

Enclosures

c: Muhlenberg County Health Department

McGhee Engineering Inc

Division of Plumbing

Page 15: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

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Page 18: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

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Page 19: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

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Page 20: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

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Page 22: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

�� � � �� �� ���� �� � � �� �� �5 , % � �� � � � � � � � � �� � � � � � � � � � � � � � �� � �( �6 ? � � �� � � � � � � ' > C H ! 5 � � � � � � ) � � � � � � $ : � � � � � � � � � : � � � � �7 � � � � � � � � � � 1 7 � � �� % � � � � � � � 1 0 # ( � � � � 0 # � 5 ! K 1 7 � � �� % � � � � � � " � B 1 0 ( � � � � 0 # � 5 ! K C �( � � � � ) � �� C � � ! ( � � � � � �( � $� � � . � � � � � � � � � ' 0 � � � � � � � ( � � � � � � � � � � � � � � � � � � � � � � � � ? �� � � �( U � � � � U ? � � � � � � � ! � � � � 6 �( � � $ �� � � � � � � � � % � � � � � � / . � 1 7 � � �� % � � � � � � � 1 0 ( � � � � � �7 � � � � � � � � � � 1 7 � � �� % � � � � � � 1 # ( � � J � � � �& � � � � ! �� � � � � � � � 7 � � � � � � . � � � ! �� � � � � � � � � � � � � � � � � � � � J L ! �� � � � � � � � 6 � � � �7 � � � � ,7 � � �� � � � � � � � 1 � #B 0 ( � � � � > # � 5 ! K � � � � � � � D � ? � � � �( ! � � � � � �( � � � � 7 � � � � B @ � � � � � � � 1 , � � � � ! : � � � � � � � $ � � � C �� � � � � � � �� : � � � � & � � ��' + , # - ./ 0 � # # 0 � � � � � � 45 0 5 � � � � � � � � � � � & � � � � � �� � � � � � � � � �� � � � � � � � � � � � � � �� � � � � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � � �< � � �� � � � � �( � $ � � � � � � � �' + , # - ./ 0 � # # 0 � � � � � � 1 , 2 , 3 2 � 3 45 @ 5 � �� � � � � � � � � � � � � � $ � � � � � � � � � � � � � � � � �& $ � � $ � � � � � � $ � �( � �� � � � $ = � � � � � � � $ ? � � �� �& � � �& � � ( ' + , # - ./ 0 � # # 0 � � � � � � 1 , 2 @ 3 45 B . � � � �( � �� � � �� � � � � � � � $ � � � � � � � � �& � � � � ! �& �� � � � � � � � � � � � � �& �' + , # - . / 0 � # # 0 � � � � � � 1 , 2 , 3 2 � 3 4

% � � � � � % � � $ � � 57) � � � � � � $ / 8 � � � � � ��. � � �& � � $ : ! A �' � .7 6 1 # B # # # 7 �( > � #

Page 23: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

�� � � �� �� ���� �� � � �� �� �5 > 5 � � � � �� � � � � � � � � � � � � � � � � � � �� � � � � �( � � � � � � � � � � � � � � � � $ � � � ( � � $ ( � � � %' + , # - ./ 0 � # # 0 � � � � � � " 45 9 . � � � � � � � � � $ � � � � � � � � � � � � � � = � �� � � & � � � � � � � � � � � �& � � � � � � � � � � � � � � � � � � �( � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � �' + , # - . / 0 � # # 0 � � � � � � #2 @ 3 45 # ) � � � �( � � � * � � � � � � � � 8 � � � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � �' + , # - ./ 0 � # # 0 � � � � � � # 2B 3 45 . � � � � � � � � � � � � � � � � � � � � � � � � � � �& � � � � � � � � �� � � � � � � � � � � � � � � � � �' + , # - ./ 0 � # # 0 � � � � � � # 2 > 3 45 1 � � � � 8 � � � � � $ � � � � � � � �� ( � & � � � � � � � � � � � � 8 � � � � � �� W � � � � � �� � �( � � � � � � � �� � � � � $��' ! �� � � �& � U ? $( � � � � � � � � � � W 0 �( * � � � � �( � �'�' J � � � � �< � . � � � � � � � � � � � � � � � W #' # 0 �( * � � � � � �' + , # - ./ # � # " � � � � � � , 45 " 5 � � � � � � � � � � � � �� � � � � � � � � � � � � �� � � � � �� � � � � � $ 8 � � � � � $ � � � � & � � & � � � � � � � �� � � � � � � � � � � �� � � , # - ./ % � � � � � 0' : & � � � � � � � �� � � � � � � � � � � �� � , # - ./ % � � � � � 0 � � � � � � � � � � � �� � � � �( � � � � � � � � � � � �� � � �� � � � � � � � � � � & � � � � � � � � � � � � � � � � � � � � � � � ? � �� � � � � � � � � � � � � � ' + , # - ./ 0 � # # 0� � � � � � 1 , 2 , 3 2 � 3 45 , :� � � � � � � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � � � � � � � � �� � � � � � � $ � � � � � � � � �( � � $ � � � � � � � � �� � � � � � �� � � 8 � � � � � $ � � �� ! �& �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �( � � � � ' + , # - ./ 0 � # # 0 � � � � � � 1 , 2 , 3 2 � 3 " 45 0 5 � � � � � � � � � � �� � � � � � � � � $� � � �� � � � � �� � � � �( � � � � � X > 0' 1 X � � � � � � � � � X X X X X H � � / �& � X X X X X X X X X 2� ( � � � � �' # " # # 3' + , # - ./ 0 � # # 0 � � � � � � 2 1 3 45 @ . � � � � � � � � � � � � � � � � � � � � � � �� � � �� � � � 8 � � � � � $ � � � � � � � �� � � � � � � � � � � � � � � ! �& �� � � � � � � � � / ( � � � � � � �� ' + , # - ./ 0 � # # 0 � � � � � � 1 , 2 , 3 2 � 3 45 B 5 � � �& �� � � �� � � � � & � � � � � � � � � � � � � � � � $ � �� � � � � � �( � � � � � � � �� � � � � � � � � � � � � �� �& 2 1 3 � � � � �� � � � � � �� � � � � � 5 � � � � � �7 � � � � 2 � � 57 3' : � � � � � � � � �& � �( � �� � � � �( � � � � � � � �� ? � � � � � � $ 2 9 # 3 � � � � � � � � � � 57 ; � � � � ( � � � � � � � � $ � � � � �& � � � � � � � $ � � $ � � � � � � �& � � � � � $ � � � � � � ? � �� � � � � � � � �� � �� � � � � � � � 57 � � � � � �� � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � � � � �' + , # - . / 0 � # # 0 � � � � � � 9 4% � � � � � % � � $ � � 57) � � � � � � $ / 8 � � � � � ��. � � �& � � $ : ! A �' � .7 6 1 # B # # # 7 �( 9 � #

Page 24: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

�� � � �� �� ���� �� � � �� �� �5 > . � � � � � � � � � �� � � � � � � � � � � � � $ � � � � � � � � � & � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � �' % � �� � � � � � � � � � � � � � � � � � � � � �� � � � � � �� �& 2 1 3 � � � � �� � � � � �� � � � � � � � � � � � � �� � 8 � � � �' : � � �� � � � � � � � � �� � � � � � � � � � �� � � � � � � � �� �& 2 1 3 � � � � �� � � � �� � �( � � � � � � ; � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � $ � ( � �' 5 � � � � � � � � � $ � � � �� � � � �( � �� �& 2 1 3 � � � � � ? � �� � � � � � � ( � � � � �� � � � � � � � � � � � � � � � � � � � � �� � �& � � � � � � �( �' + , # - . / 0 � # # 0 � � � � � �1 , 2 3 45 9 5 � % � �� � � � � � � � �7 � � � � �� � � �& � � Y � � " # � 1 # B � � � ? � � � � � � Y � � " # � 1 # 9' + , # - ./ 0 � # # 0 � � � � � � 1 , 2 3 4

% � � � � � % � � $ � � 57) � � � � � � $ / 8 � � � � � ��. � � �& � � $ : ! A �' � .7 6 1 # B # # # 7 �( # � #

Page 25: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

Section 05501-1

5109.016/1-2017

SECTION 05501

STOP GATES PART 1–GENERAL 1.01 SUMMARY

A. Work Included: Stop gates and grooves.

B. Related Sections and Divisions: Applicable provisions of Division 1 shall govern work in this section.

1.02 REFERENCES

A. ASTM B209–Aluminum and Aluminum-Alloy Sheet and Plate.

B. ASTM B211–Aluminum and Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire.

C. ASTM B221–Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.

1.03 SUBMITTALS FOR REVIEW

A. Comply with pertinent provisions of Section 01300–Submittals.

B. Shop Drawings: Indicate number, sizes, stiffeners, handles or handholes, anchorage, size and type of fasteners, and accessories.

C. Indicate welded connections using standard AWS A2.0 welding symbols. Indicate net weld

lengths. 1.04 QUALIFICATIONS

A. Qualify welding processes and welding operators in accordance with AWS D1.1 Standard Qualifications Procedures.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Deliver all materials to job site properly marked to identify the gate for which it is intended and at such intervals to ensure uninterrupted progress of the work. Marking shall correspond to markings indicated on the shop drawings.

B. Store all members off the ground using pallets, platforms, or other supports.

C. Do not store materials on the structure in a manner that might cause distortion or damage

to the members of the supporting structures.

D. In the event of damage, immediately make all repairs and replacements necessary at no additional cost to OWNER.

Page 26: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

Section 05501-2

5109.016/1-2017

PART 2–PRODUCTS 2.01 MANUFACTURERS

A. Stop gates and frames shall be as manufactured by Whipps, Inc., Fontaine, or equal. 2.02 MATERIALS

A. Stop gates shall be fabricated of aluminum alloy 6061-T6 plate minimum 1/4-inch thick and shall be provided with handholes or handles.

B. Provide stiffeners as required to limit plate deflection to 1/720 of the span of the plate.

C. Stop gate frames shall be fabricated of aluminum alloy 6061-T6.

D. Ultra-high-molecular weight-bearing bars shall provide a maximum coefficient of friction of

0.125 between plate and groove under operating head.

E. Stop gate seals shall be minimum 1/4-inch neoprene hollow bulb (J-bulb) extrusions fastened to the gate side frame by means of an adjustable retainer. The seal and retainer shall have slotted mounting holes to allow for adjustment of seal compression against stop plate. Seals shall be replaceable without special tools and without removing frame from its installed position.

F. Mounting hardware shall be of stainless steel construction.

2.03 FABRICATION

A. Stop gate frames shall be assembled continuous on sides and bottom and shall incorporate ultra-high-molecular weight-bearing bars and J-bulb seals on each side of the plate. Provide bars from sliding out of grooves with plate.

B. Guide frames built up from plate or structural shapes will not be acceptable.

C. Mounting hardware, if required, shall be of size and type recommended by the manufacturer

and shall be provided as part of the stop plate groove. 2.04 FINISHES

A. Aluminum shall be mill finished.

B. Portions of stop gate grooves that come in contact with concrete shall be coated with multiple coats of bituminous paint prior to casting in concrete, minimum 10 mils dry.

PART 3–EXECUTION 3.01 EXAMINATION

A. Correct conditions detrimental to the proper and timely completion of the work.

Page 27: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

Section 05501-3

5109.016/1-2017

B. Do not proceed until unsatisfactory conditions have been corrected.

3.02 INSTALLATION

A. Stop gate groove shall be anchored in forms so that plate bearing surface remains in a vertical plane.

3.03 SCHEDULE

A. See drawings for stop gate schedule.

END OF SECTION

Page 28: ADDENDUM No. 5 · aeration basin shall be capable of delivering the following quantity of oxygen to each channel at each location as shown below. The oxygen values are measured at

McGhee Engineering, Inc.

END OF ADDENDUM NO. 5 TEXT This addendum consists of 29 pages of text and 7 plan sheets for a total of 35 pages.

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McGhee

Guthrie, KY 42234

202 Ewing Street

(270) 483-9985

Engineering

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75-ASM-03

#

PROPOSED OPENING TO BECUT IN FLOOR WITH REMOVABLEGRATING FOR BASEMENTEQUIPMENT ACCESS.

EXISTING SHIPS LADDERBASEMENT ACCESS

DIGESTER

5'-0"

CLEA

R OP

ENIN

G

1'-2"3'-0"CLEAR OPENING

REMOVABLEGRATINGGROUND

LEVELFLOOR

EXISTING W10 FLOORSUPPORT BEAM

PROPOSED W10x33FLOOR SUPPORT

BEAM

DOOR

CUT AND REMOVECONCRETE FLOOR

PROPOSED SHELFANGLE SUPPORT

2'-0"

7'-0"

+/-

FIEL

D VE

RIFY

CONCRETEWALL

L3x3x1/4

2-3/4" EXP ANCH

14

EXISTING W10x33(VERIFY)

PROPOSED W10x33

12"

EXISTING CONCRETE FLOOR

SAW CUTL3x2x1/4

12" EXP ANCH

L3x3x1/41" 6" 1"

316

L2x2x1/4 1 12" ALUM GRATING

2'-4"

2'-0"

2'-0"

FLOOR PENETRATION DETAIL B75-ASM-03

FLOOR PENETRATION DETAIL A75-ASM-03

FLOOR PENETRATION SECTION C75-ASM-03

FLOOR PENETRATION SECTION D75-ASM-03

B75-ASM-03

C75-ASM-03

D75

-ASM

-03

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