FWHWRC and YRWRF

Primary Clarifier Rehabilitation

ADDENDUM NO. 4

Addendum Date July 8, 2022

Bid Number BL071-22

ADDENDUM MUST BE SIGNED AND INCLUDED IN YOUR BID SUBMITTAL

BL071-22 ADDENDUM NO. 4

JULY 8, 2022 PAGE 1

PART 1 – REVISIONS TO THE PROJECT MANUAL

The following REVISIONS shall be incorporated into the PROJECT MANUAL for the above-referenced project:

1. Instructions to Bidders, Sample Agreement, Part 6.02-A-1, revise as follows:

a. 90 95 percent of Work completed (with the balance being retainage). If the

Work completed has reached 50 percent of the Total Contract Price as determined by Engineer, and if the character and progress of the Work have been satisfactory to Owner and Engineer, then as long as the character and progress of the Work remain satisfactory to Owner and

Engineer, there will be no additional retainage; and

b. 90 95 percent of cost of materials and equipment not incorporated in the

Work (with the balance being retainage).

2. Supplementary Conditions, add the following:

a. SC-14.02.A.3.b Delete Paragraph 14.02.A.3.b in its entirety and insert the following in its place:

b. The Owner shall retain from progress payment five percent (5%) of the estimated value of the Work performed.

3. Section 01 14 00, add Part 1.09 as shown below:

1.09 ADMINISTRATION PERIOD

A. The project Administration Period shall commence upon the issuance of the Notice to Proceed (NTP).

B. During the Administration Period the Contractor shall submit, revise as required by the Engineer, and obtain approval for, at a minimum, the following:

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 2

1. Section 01 29 73 Schedule of Values

2. Section 01 32 00 Construction Progress Schedule

3. List of Personnel and Emergency Contacts.

4. Copies of permits and approvals for construction as required by

Laws and Regulations and governing agencies.

5. Delivery schedule for major equipment or long-lead items.

6. Any additional documents, plans, schedules, or the like, which will facilitate the Contractor’s ability to immediately initiate construction activity upon issuance of the Notice of Mobilization

C. During the Administration Period the Contractor shall complete, as a minimum, the following:

1. Installation of temporary field office(s), complete with all required utilities, internet, network, supplies, and furnishings required.

2. Issuance of contracts, subcontracts, and purchase orders for all major products and systems.

D. During the Administration Period the Contractor shall be limited in site access to only the following:

1. Nondestructive field verification of existing conditions.

2. Construction of temporary field office(s).

E. Provided all requirements of the Administration Period have been completed, submitted, and approved by the Engineer, and the Contractor has established that they are fully prepared for the Work to commence, the Engineer shall issue a Notice of Mobilization.

1. Notice of Mobilization will not occur earlier than 30 days after NTP.

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2. Notice of Mobilization will not occur earlier than 60 days before the scheduled date of the first major equipment delivery.

4. Section 01 29 73, Part 1.02-B-7, revise as follows:

7. Costs for submittals, operations and maintenance manuals, startup, field testing, and training shall be as follows, unless otherwise accepted by

Engineer:

a. Approval of submittals will be limited to 30% 10% of the value of the associated equipment procurement.

b. Approval of preliminary O&M manuals will be limited to 10% of the value of the associated equipment procurement.

c. Approval of final O&M manuals will be limited to 5% of the value of the associated equipment procurement.

d. b. Startup, field testing, and training shall be at least 10% of the value of the associated equipment procurement and shall follow Engineer’s acceptance of the associated written site testing report(s).

5. Section 01 52 00, Part 1.02-B-2-e-7, revise as follows:

a. Potable water service to water closet and lavatory. Provide backflow preventers on all potable water connections to field offices. Backflow preventers shall comply with Section 40 05 51, Part 2.07.

6. Section 03 01 30 Concrete Repairs: add Part 1.01-B-1 as follows:

a. 1. Contractor shall provide the Engineer one week notice prior to the meeting for determining concrete repairs.

7. Section 03 01 30 Concrete Repairs: add Part 1.01-B-2 as follows:

a. 2. Contractor shall provide ladders and portable scaffolding for access to determine concrete repairs.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 4

8. Section 40 05 19 Ductile Iron Pipe: Add this specification section in its entirety.

Section is included as an attachment to this addendum.

9. Section 40 05 62 Eccentric Plug Valves: Add this specification section in its entirety. Section is included as an attachment to this addendum.

10. Section 40 05 63 Ball Valves: Add this specification section in its entirety. Section is included as an attachment to this addendum.

All other terms and conditions of the PROJECT MANUAL remain unchanged.

PART 2 – REVISIONS TO THE DRAWINGS

The following REVISIONS shall be incorporated into the DRAWINGS for the above-referenced project:

1. Drawing M104, replace Section B-B with revised Section B-B, included as an attachment to this Addendum as Figure 1.

2. Drawing M107, replace Section D-D with revised Section D-D, included as an attachment to this Addendum as Figure 2.

3. Drawing M151, add Note 10:

a. 10. ALL BALL VALVES ON THIS SHEET SHALL BE TYPE 316 SST, 2

PIECE DESIGN, BY APOLLO, LEGEND, OR APPROVED EQUAL.

4. Drawing G201, Primary Clarifier Component Summary, revise as follows:

a. Replace with New Equip under Section 40 05 68.23 40 06 20

5. Drawing MD001, Standard Detail M-40-0704, revise as follows:

a. SCHEDULE 80 PVC PIPE MATERIAL AND WALL THICKNESS AS

SPECIFIED IN SECTION 40 06 20, 1” MINIMUM, 5’ MAXIMUM SPACING

ON SUPPORTS

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 5

b. HOSE BIBB M-40-0704-R

6. Drawing SD001, revise as follows:

a. EQUIPMENT PAD 0331600 S-03-0504

7. Drawing SD001, add Note 8:

a. 8. CONTRACTOR SHALL PROVIDE LADDERS AND PORTABLE

SCAFFOLDING FOR INSPECTION OF EXISTING CONCRETE

SURFACES TO DETERMINE THE EXTENT OF CONCRETE TO BE

REPAIRED AS STATED IN NOTE 2.

All other terms and conditions of the DRAWINGS remain unchanged.

PART 3 – QUESTIONS AND ANSWERS

The following QUESTIONS and ANSWERS shall be incorporated into the PROJECT MANUAL for the above-referenced project:

Q1: Please reference the Drawings and Bid Form Part 2 (unit prices). Certain concrete repairs (See Drawing S101 Photo 2 and Drawing S102 Photo 1 as examples) show repair work with notes that call out specific locations.

Other notes on these drawings reference the use of the unit prices to pay for this work. Please clarify, are there any repair items that will be paid for in Bid Form Part 1 (base bid)? Or will it all be paid for from the unit prices as referenced in Section 01 20 00, Part 1.03, Owner-Directed Work Items?

A1: Concrete repairs are to be paid as Part 2 Owner directed work items per note 6 on Drawing SD001. For example, on Drawing S101 (Photo 2 and Section A)

“Surface Spall Repair” and “Cement Based Textured Coating” are specified for the repair. These items are listed under Part 2 of the Bid Form.

Q2: Please confirm what should be assumed for allowable loading on the top of the existing Primary Clarifiers at each site.

A2: See Addendum No. 3, Question and Answer No. 13.

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JULY 8, 2022 PAGE 6

Q3: Aside from trade permits, please confirm if any permits are required to be obtained and paid for by the contractor.

A3: Per GC-6.08-A, Contractor shall obtain and pay for all construction permits and licenses. One Gwinnett County Building Permit for each Site is expected to be approved prior to Contractor’s Notice to Proceed. Contractor will be required to obtain approved permits and pay all associated fees.

Q4: Please confirm if the contractor should carry the cost of electrical consumption and water consumption in the bid or if this will be paid for by the owner?

A4: Contractor will be responsible for installation and removal of all required utilities but will not be charged for the consumption of electrical power, W1 (potable water), and W3 (plant water). W1 shall only be used for field office water closet and lavatory. W3 shall be used for all other purposes such as tank cleaning.

Provide backflow prevention on all potable water connections to field offices.

Backflow preventers shall comply with Section 40 05 51, Part 2.07.

Q5: Reference General Conditions, Article 6, Contractor's Responsibilities.

6.20, Indemnification and Liability includes revisions to 6.20A and 6.20D.

Please confirm that the added language to the end of Section 6.20

Indemnification is not intended to negate limit on the scope of Contractor’s indemnity “to the extent caused by any negligent act or omission of

Contractor…”

A5: Contract language as written remains.

Q6: Reference Bid Form, item 3c. Section 3c states in part, “Bidder ...accepts determination concerning technical data contained in reports and drawings on which Bidder is entitled to rely.” This contradicts language in the

Instructions to Bidder, Section 8. Section 8, Examination of Bid plans and specifications, states in part, "The Bid Plans...information indicated is not guaranteed as being correct and complete. Bidders are expected to examine the Bid Plans and the location of the Work, verify all information with authorities concerned, and judge for themselves all the circumstances affecting the cost of the Work and the time required for its completion, and shall assume all patent and latent risks in connection therewith.” Please clarify the reliability of the Geotech, plans and specs.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 7

A6: There is no geotechnical report for this project. None of the reports and drawings referenced in Supplementary Conditions Part SC-4.02-D are “technical data” on which Contractor may rely.

Q7: Reference Instructions to Bidders, 3. Qualifications of Bidders. Item 3.3 states, "If Bidder does not have offices in the State of Georgia, such Bidder shall designate a proper agent in the State of Georgia on whom service can be made in the event of litigation." Please clarify if this information needs to be included with the bid submission or post bid submission.

A7: Provide evidence of Bidder’s authority and qualification to do business in Georgia or agree to obtain such qualification prior to award of the Contract. Failure to obtain this qualification will render the Bid non-responsive and Bidder will forfeit its Bid Bond.

Q8: Reference Bid form, Item I. "Bidder should submit a projected Monthly

Cash Flow projection with the bid." Please provide a Monthly Cash Flow projection template.

A8: Contractor to provide table with one column for month and adjacent column with monthly expenditure. A projected monthly cash flow projection template is attached as requested. The projected monthly cash flow represents Bidder’s estimated cash flow and will not be used to determine payments to Contractor during construction.

Q9: Bid Items 2.24 and 2.25 on the Bid Form provided in the Instruction To

Bidders are referencing repairs on the troughs at F. Wayne Hill WRC. The

Volume 3 Contract Drawings for F. Wayne Hill do not provide any drawing, detail, or picture of these cracks or gaskets, and it is unclear what the bid items are asking for. Please confirm if we are to repair cracks in the actual trough or the concrete around the trough. If we are to repair the trough itself, please provide the material makeup of the existing troughs and what it is to be repaired with. For the gaskets, please provide where these are located and what the new gaskets are to be made of.

A9: Effluent trough crack repair referenced in Bid Item 2.24 refers to the trough itself, not the concrete around the trough. The existing troughs are fiberglass and shall be repaired with a compatible fiberglass resin repair product. Effluent trough gaskets are located at the ends of the troughs and shall be neoprene.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 8

Q10: There is substantial structural repairs to be made to the primary clarifier structure. Is the structure safe to perform all construction work without shoring are means by the GC required such as temporary shoring? If shoring means are required, please provide what is required and where it is required.

A10: The Contractor is responsible for safety and protection of the structure while the work is performed. See General Conditions Parts 6.11-D and 6.13 and Section

01 71 33 Protection of Work and Property.

Q11: With the magnitude of concrete repairs, it is very difficult to understand how the repairs impact a construction schedule. Once the structure is cleaned of unsound material, how long will it take the engineer to do the inspection and return the directive to the GC? Since the concrete repairs are not currently quantifiable in each clarifier, how long should the GC plan to perform work within each clarifier? Currently, it's presumed that concrete repairs must be performed before installing new clarifier equipment for access reasons so the amount of time for the repairs would presumably be critical path for the project.

A11: The Engineer will be available within one week notice to meet onsite with the

Contractor for determination of the concrete repairs. The Contractor is to submit a summary of work to the Engineer for prompt review and approval. Section 03

01 30 Part 1.01-B-1 is revised by this addendum to include one week notice. Per

Section 01 14 00 Part 1.02-B, Milestone 1 includes all Mechanical, Electrical, and

I&C work at FWH and shall precede the Structural and Coatings work at FWH.

Q12: What equipment is required for the engineer to access for inspection access? Is rolling scaffolding sufficient?

A12: This addendum includes provisions for ladders and portable scaffolding to be provided by the Contractor. Areas of Work shall be accessible for inspection while the Work is occurring.

Q13: The contract times for FWH is stated as 420/588/616 for Milestone 1, Substantial, and Final respectively. And 532/560 for YR. For FWH Milestone

1, Spec 01 14 00 schedule of shutdown gives 40 weeks for this work (280 days) leaving 20 Weeks (140 days) on the front end of the schedule to get field dimensions, manufacturer submittals, engineer's approval, and

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 9

delivery. Have the preselected equipment vendors previously agreed to this

20 week timing or will an NTP be delayed if equipment lead times are past this 20 Week timing? Due to the current market volatility regarding deliveries, we believe more time is required if a NTP will be issued prior to construction.

A13: See Addendum No. 3, Question and Answer No. 9. The number of days for completion of Milestone 1, Substantial Completion, and Final Completion were revised in Addendum No. 3.

Q14: Regarding the sequence of work, the clarifiers will shutdown and cleaned 3 times. 1. For field dimensions of the existing clarifiers, 2. when the work is to be performed after clarifier equipment arrives, 3. For structural repairs and coatings. Spec 011400 says the owner will dewater the clarifiers. Will the owner dewater the clarifiers all three times? Should the contractor expect any sludge removal or will the tanks be sufficiently clean to begin field measuring, demolition, and pressure washing activities? If the contractor should perform sludge removal, please provide the depth of sludge which should be expected.

A14: See Addendum No. 3, Question and Answer No. 2, No. 25, and No. 26. Each time that a primary clarifier needs to be dewatered, the Owner will drain it as low as possible using the existing drain piping, and the Contractor shall remove remaining liquids and solids as required to complete the work.

Q15: Would you consider Quadex Structure Guard as an acceptable Epoxy Liner

Protective Coating Material as an equivalent MIC Coating system for the epoxy coating portion of this project?

A15: Requests for approval of “or equal” products shall comply with Section 01 61 00, Part 1.04-E and will only be considered after Notice to Proceed. Approval of any product submitted for consideration as an “or equal” will be at the Engineer’s sole discretion.

Q16: Drawings M108 and M109 call out enlarging the 10 sample ports and providing new sleeves and a cover plate. Drawings do not detail plate thickness, sleeve depth, angle details, or any information on what is expected of the cover plate. Please provide a detail of the proposed sleeve and cover plate for pricing.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 10

A16: Except for the sample port diameter and cover plate diameter, the enlarged sample ports shall match existing. See Note 1 on Drawing M-109.

Q17: Drawing M151 calls out the install of a 1" copper line that ends with a hose bibb connection. Detail M-40-0704 on MD001 calls out the lines entering into the hose bibb as Sch 80 PVC. Please clarify if we are able to run the 1" copper line and connect to a 1" ball valve made of copper as well?

A17: Provide copper piping in this location per Section 40 06 20. This addendum includes revisions to Standard Detail M-40-0704 to clarify the pipe material.

Provide 316 SST ball valves. This addendum includes revisions to Drawing M151 to clarify the ball valve material.

Q18: Please confirm if another site visit will be possible at the F. Wayne Hill and

Yellow River sites to accommodate specialty subcontractors not able to attend the previous visit.

A18: There are no additional site visits for this solicitation.

Q19: Contract Drawings M151 and MD001 indicate and call out a PV and various ball valves without vendor, model number, or connection type called out.

Please provide specifications on these valves.

A19: Specifications Section 40 05 62 Eccentric Plug Valves and Section 40 05 63 Ball

Valves are provided as attachments to this addendum.

Q20: Please provide Connection Types for all SB Valves shown on M151, M206, and MD001.

A20: Eccentric plug valves shall have flanged ends per Section 40 05 62. Ball valves shall have threaded ends per Section 40 05 63. Solenoid valves shall match existing per Section 40 06 20. Back pressure valves furnished by double disc pump manufacturer shall have flanged ends.

Q21: Regarding Bid Item 2.17 Concrete Beam End Repair, please advise if the beam needs to shored during the beam end pocket repair work.

A21: The repair includes removal of excessive concrete which is not considered structural. Per Note 2 the existing corbel and beam end is to not be damaged so the integrity of the beam would remain and not require shoring.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 11

Q22: The Contract sections 6.03 and 13.03 seem to contradict who pays for construction materials testing. Please confirm the owner is responsible for paying for construction materials testing.

A22: Owner will pay for construction materials testing where indicated in the Bidding

Documents. Owner will pay for initial concrete and concrete repair material testing, see Section 03 30 00 Part 1.05-C. Contractor is responsible for concrete anchor testing per 05 50 23 Part 3.02-D and testing of protective coatings per

Section 09 90 00 Part 3.04 and Section 09 96 59 Part 3.05.

Q23: Specification 01 14 00 states that contractor is responsible for cleaning all tanks after they have been drained by owner. Please provide detail on the level of cleaning required. Is it a pressure wash? If so what is the PSI requirement? Please provide the amount of solids to be assumed in each basin for fair bidding purposes by all contractors.

A23: Contractor shall clean the interior of the clarifiers as required to complete the

Work (Section 01 14 00, Part 1.05-C-5-e, revised per Addendum No. 3).

Examples of specific locations where a pressure wash is required include portions of the FWHWRC and YRWRF primary clarifiers (Drawing S100 Note 1 and Drawing M200, Note 2), surface preparation for Concrete Wall Resurfacing

Material (Section 03 01 30, Part 3.08), Repair of Exposed Metal on Concrete

Surfaces (Section 03 01 30, Part 3.09), and FRP Hatch Covers (Section 09 90

00, Part H). Pressure wash shall be medium duty per Drawing S100 Note 1 and

Drawing M200, Note 2.

Q24: Please advise if the duration/schedule provided encompasses time that is anticipated based on all repairs/unit price work. If not, please confirm the contractor is allowed additional time/General conditions for unit price work.

A24: The duration/schedule provided encompasses time that is anticipated based on all the repairs/unit price work shown on the Bid Form.

Q25: When pulling a dimension of the width of the clarifier on drawing M107 section D-D of 3/16"=1'0", it does not equal to the 41' width as noted on drawing S100, but instead pulls about 81'. Drawing S103 detail F shows a scale/dimension that when pulling dimension matches that of the scale as shown in section C-C of drawing M107. Please confirm which dimension/scale is correct.

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Addendum Date July 8, 2022

JULY 8, 2022 PAGE 12

A25: Scales are correct; however, Section B-B on Drawing M104 and Section D-D on

Drawing M107 incorrectly showed the full width of two (2) primary clarifiers, while the corresponding section arrows on Drawings M102, M103, M105 and M106 only cut across the full width of one (1) primary clarifier. To correct this, Sections

B-B and D-D are revised in Figures 1 and 2 attached to this addendum.

Q26: There are two bid items on the Bid Form for Steel Painting and Steel

Painting Topcoat only. There are no descriptions in the specifications or drawings as to which areas receive Steel Painting and which receive Steel

Painting "Topcoat only". Please specify what areas are to receive each kind of coating and what material is to be used for each application.

A26: Photos on Drawing S104 show typical items to be painted and Part 2 bid items for painting are Owner directed work items. See Section 01 20 00 for descriptions of these bid items. See Section 09 90 00 for materials.

Q27: Please provide the material types and hardware material required for flanged pipe connections.

A27: See Section 40 05 19 Ductile Iron Pipe attached to this addendum for the material types and hardware material required for flanged pipe connections.

Q28: Is the grout in the existing clarifiers to be removed and poured back?

A28: Grout along the interior floor of the clarifiers is not to be removed and replaced.

Q29: The General Condition page 64 Testing and Inspection the owner will hire a testing lab but then it also stated the contractor is to provide and pay for all testing. Can you provide clarification on what is required by the contractor regarding special inspection and quality control?

A29: Owner will pay for construction materials testing where indicated in the Bidding

Documents. Owner will pay for initial concrete and concrete repair material testing, see Section 03 30 00 Part 1.05-C. Contractor is responsible for concrete anchor testing per 05 50 23 Part 3.02-D and testing of protective coatings per

Section 09 90 00 Part 3.04 and Section 09 96 59 Part 3.05.

Q30: The following forms list the original bid date June 30, 2022. Bid Form, (pg

20), Bidder's Affidavit, and Form of Non-Collusion Affidavit. Please reissue forms with correct bid date or provide permission for bidder to adjust date.

ADDENDUM NO. 4

Addendum Date July 8, 2022

JULY 8, 2022 PAGE 13

A30: Revised forms are attached to this addendum showing the bid date corrected to

July 14th, 2022 as per Addendum No. 1.

Q31: Will the Bidding Documents be revised to comply with the retainage provisions within S.B. 438 which was recently passed by the Georgia legislature?

A31: The Supplementary Conditions and Sample Agreement are revised in this addendum to comply with S.B. 438.

PART 4 – ATTACHMENTS

A. Section 40 05 19 - Ductile Iron Pipe (2 pages)

B. Section 40 05 62 - Eccentric Plug Valves (3 pages)

C. Section 40 05 63 - Ball Valves (1 page)

D. Figure 1 – Reference Drawing M104 (1 page)

E. Figure 2 – Reference Drawing M107 (1 page)

F. Bid Form with revised Bid Date July 14, 2022 (4 pages)

G. Bidder’s Affidavit with revised Bid Date July 14, 2022 (1 page)

H. Form of Non-Collusion Affidavit with revised Bid Date July 14, 2022 (1 page)

I. Bidder’s Monthly Cash Flow Projection Template (1 page)

Acknowledgment of receipt of this addendum must be signed and included in your bid submittal.

Company Name

Signature

Date

07-08-22 40 05 19-1 FWHWRC AND YRWRF

PRIMARY CLARIFIER REHABILITATION

DUCTILE IRON PIPE

SECTION 40 05 19

DUCTILE IRON PIPE

PART 1 – GENERAL

1.01 THE REQUIREMENT

A. All ductile iron pipe and specials shall be marked with the manufacturer's name or trademark, size, weight, thickness class, the date of manufacture, and the word

"Ductile".

B. Ductile iron pipe (DIP) of the sizes shown or specified shall conform to ANSI A21.51

(AWWA C151), Grade 60-42-10 for ductile iron pipe centrifugally cast in metal molds or sand-lined molds. All ductile iron pipe shall conform to ANSI A21.50 (AWWA C150) for thickness design and shall be supplied in 18 or 20 foot nominal lengths or as required to meet the requirements of the Drawings. Fittings and specials shall be cast iron or ductile iron, conforming to the requirements of ANSI A21.10 (AWWA C110) or ANSI A21.53

(AWWA C153).

C. Minimum Class 53 pipe shall be used for flanged spools.

D. Reference Section 40 05 00 − Basic Mechanical Requirements

E. Reference Section 40 06 20 − Process Pipe and Valve Schedules for pressure rating requirements for specific applications.

PART 2 – PRODUCT

2.01 DUCTILE IRON PIPE AND FITTINGS

A. All pipe and fittings shall be cement mortar lined. Linings shall conform to American

Standard Specifications for Cement Mortar Lining for Cast Iron Pipe and Ductile Iron

Pipe and Fittings, ANSI A21.4 (AWWA C104) and shall be standard thickness. The mortar lining shall be protected with the bituminous seal coat. All exposed DIP and fittings shall have a shop applied prime coat in accordance with Section 09 90 00 −

Painting.

B. Requirements for various types of joints are described in the following paragraphs.

UNLESS OTHERWISE NOTED HEREIN OR ON THE DRAWINGS, ALL EXPOSED

DUCTILE IRON PIPING SHALL HAVE FLANGED JOINTS.

C. Flanged joints and fittings shall have a minimum pressure rating of 250 psi with 125 lb.

American Standard flanges. All flanges and fittings shall conform to the requirements of

ANSI B16.1. Flanges shall be ductile iron and shall be of the threaded or screw on type.

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07-08-22 40 05 19-2 FWHWRC AND YRWRF

DUCTILE IRON PIPE

The face of the flanges shall be machined after installation of the flange to the pipe. No raised surface shall be allowed on flanges. Flanged pipe shall conform to the requirements of ANSI Specification A21.15, (AWWA C115). Pipe lengths shall be fabricated to meet the requirements of the Drawings.

D. Gaskets shall be the "Ring Gasket" type, 1/8-inch minimum thickness, cloth inserted rubber, red rubber or neoprene and shall be suitable for the service intended. Gaskets for glass lined pipe shall be TORUSEAL flange gasket, or equal. Bolts shall be of the size and length called for and in accordance with the "American Standard" and comply with the requirements of the ANSI/AWWA Standards. The bolts for flanged joints shall be a minimum ASTM A307; Grade B carbon steel and be in accordance with ANSI

A21.10, (AWWA C110). The bolts shall have hexagonal heads and nuts, no washers shall be used.

END OF SECTION

07-08-22 40 05 62-1 FWHWRC AND YRWRF

ECCENTRIC PLUG VALVES

SECTION 40 05 62

ECCENTRIC PLUG VALVES

PART 1 – GENERAL

1.01 THE REQUIREMENT

A. Reference Section 40 05 00 − Basic Mechanical Requirements.

1.02 SUBMITTALS

A. As required in Section 40 05 51 – Valves General, and Section 01 33 00 – Submittal

Procedures.

B. Performance tests shall be conducted in accordance with the latest revision of AWWA

C517 and affidavits shall conform to the requirements of the Specifications.

PART 2 – PRODUCTS

2.01 ECCENTRIC PLUG VALVES

A. GENERAL

1. Plug valves shall be of the non-lubricated, eccentric seating type with synthetic rubber-faced plugs as manufactured by DeZurik (Gwinnett OS#034-18).

2. All valves shall be provided with limit stops and rotate 90º from fully-open to fully-shut.

3. The minimum working pressure for all valves shall be 150 psi, and the test pressure shall be at least 270 psi for valves up through 12-inch.

4. Valve body shall be epoxy coated ductile iron, cast iron or semi-steel, unless specified otherwise, and coated as specified herein.

5. Seats shall have a welded overlay of one-half inch wide 90 percent pure nickel and machined to a finish containing no stress cracks. Minimum overlay thickness shall be one-eighth inch. The plug shall contact only the raised nickel seat surface.

6. Plug facings shall be NBR and completely suitable for use with domestic sewage.

7. The shaft seal shall be V-Type with minimum four sealing rings and a follower ring.

Stuffing box shall be designed with a space between the bonnet and actuator so

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07-08-22 40 05 62-2 FWHWRC AND YRWRF

ECCENTRIC PLUG VALVES

that packing can be inspected, adjusted, and replaced without removing the valve actuator.

8. Bearings shall be sleeve type with the following materials.

a. Sizes 4 – 18 inch: Sintered, oil impregnated, permanently lubricated type

316 stainless steel.

9. Provide PTFE ring on the shaft between plug and body to serve as a thrust bearing and grit excluder.

10. Unless otherwise shown, all exposed valves 4-inches in diameter and larger shall have flanged ends conforming to ANSI B16.1-125/150-pound standard with face-to-face dimensions of standard plug valves.

11. Valves 6-inches in diameter and smaller shall have lever operators, unless otherwise specified or noted on the Drawings. Manual operators for plug valves mounted above 6 feet from the operating floor shall be equipped with worm gear chainwheel actuators.

12. The manufacturer shall certify that the plug valves are capable of operating in continuous duty service under the specified pressures and flow conditions.

13. Each valve shall by hydrostatically tested and tested for bubble tightness after the operator has been mounted and adjusted. Copies of the hydrostatic and leakage test certification and certification of conformance shall be submitted to the

Engineer prior to shipment.

14. All internal and external ferrous components and surfaces of the valves, with the exception of stainless steel and finished or bearing surfaces, shall be shop painted with two coats (10 mils min. dry film thickness) of the manufacturer's premium epoxy for corrosion resistance. Damaged surfaces shall be repaired in accordance with the manufacturer's recommendations.

B. FULL PORT VALVE

1. All plug valves provided on this project shall be full port.

2. Port shall be rectangular shaped cross section designed to seat with a cylindrical plug. Port cross-sectional area shall be equal to or greater than the cross-sectional area of the upstream pipe.

3. The flow passage through the valve body shall have a cross-sectional area equal to or greater than the cross-sectional area of the upstream pipe at any point along the valve flow axis.

07-08-22 40 05 62-3 FWHWRC AND YRWRF

ECCENTRIC PLUG VALVES

Plug shall have a cylindrical seating surface and eccentrically offset from the center of the shaft. Plug shall not contact seat until at least 90 percent closed.

PART 3 – INSTALLATION

A. Install in accordance with the manufacturer’s recommendations.

B. In applications with suspended solids in the liquid or for dirty gases:

1. Vertical pipelines: Install valve with the seat end at the top.

2. Horizontal pipelines: Install valve so plug rotates upwards when opening. Higher pressure side of the valve, when closed, shall be on the valve end opposite of the seat.

C. In applications with clean liquids or gases install the valve with the higher-pressure side of the valve, when closed, on the opposite end of the valve from the seat.

END OF SECTION

07-08-22 40 05 63-1 FWHWRC AND YRWRF

BALL VALVES

SECTION 40 05 63

BALL VALVES

PART 1 – GENERAL

1.01 THE REQUIREMENT

A. Reference Section 40 05 00 − Basic Mechanical Requirements.

PART 2 – PRODUCTS

2.01 BALL VALVES (THREADED STAINLESS STEEL)

A. Two-Piece Stainless Steel Body

1. 3-Inch and Smaller

a. Threaded ends, 2-piece, full port, stainless steel design manufactured to

MSS SP-110.

b. Blow-out proof stem, RPTFE stem bearing, two position locking vinyl grip stainless steel lever operator, compression controlled RPTFE body seals, and adjustable multi-piece PTFE “V” style packing.

c. Rated for 1000 psi CWP.

d. Manufacturer: Apollo 76F-100 Series, Legend T-712 or approved equal.

PART 3 – EXECUTION (NOT USED)

END OF SECTION

-2

-2

ADDENDUM NO. 4

FIGURE 1

DATE: 07/08/2022

BY: EAM

DEPARTMENT OF WATER RESOURCES

GWINNETT COUNTY, GEORGIA

FWHWRC AND YRWRF PRIMARY CLARIFIER REHABILITATION

HAZEN JOB NUMBER 32428-021

REFER TO CONTRACT DRAWING NO. M104

ADDENDUM NO. 4

FIGURE 2

DATE: 07/08/2022

BY: EAM

DEPARTMENT OF WATER RESOURCES

GWINNETT COUNTY, GEORGIA

FWHWRC AND YRWRF PRIMARY CLARIFIER REHABILITATION

HAZEN JOB NUMBER 32428-021

REFER TO CONTRACT DRAWING NO. M107

BL071-22

BID FORM

R16

(This Bid Form is part of the Bid Documents) BID NUMBER: BL071-22 BID DATE: June 30, 2022 July 14, 2022

SUBMITTAL DATE:

BY:

(Bidder)

PROJECT DESCRIPTION: F. Wayne Hill Water Resources Center and Yellow River Water Reclamation Facility Primary Clarifier Rehabilitation

THIS BID IS SUBMITTED TO: Gwinnett County, Georgia (hereinafter called Owner) acting through its Board of County Commissioners

1. Undersigned Bidder offers and agrees to enter into Agreement with Owner, in accordance with the instructions, requirements and forms included in Bid Document Package (including the NOTICE OF BID, Instructions to Bidders Package and Pre- Qualification Package [where applicable]), and to complete all Work for the Bid Price and within required calendar days, all in accordance with the Bid Document Package.

2. Bidder accepts terms and conditions contained in Bid Document Package including without limitation those dealing with Owner's time for accepting Bid and disposition of Bid Security.

3. In submitting this Bid, Bidder makes representations required by Instructions to Bidders and further warrants and represents:

a. Bidder has examined Bid Document Package, including NOTICE OF BID and Instructions to Bidders, and following addenda:

No. Dated No. Dated

b. Bidder has examined site and locality where the Work is to be performed and legal requirements (federal, state, and local laws, ordinances, rules, and regulations) and conditions affecting Work cost, difficulty, progress, or performance and has made independent investigations as Bidder deems necessary.

BID NUMBER: BL071-22

BID DATE: June 30, 2022 July 14, 2022

COMPANY NAME:

BIDDER’S SIGNATURE:

R18

4. Bidder submits the following lump sum/unit prices for the F. Wayne Hill Water Resources Center and Yellow River Water Reclamation Facility Primary Clarifier Rehabilitation identified in Bid Form as part of this Bid. Work included within each Bid Item is described in Section 01 20 00 – Measurement and Payment. Bidder understands that if a contract is to be awarded, it will be awarded to the lowest responsible, responsive Bidder for the Total Bid (Part 1 + Part 2).

BID SCHEDULE

PART 1 – LUMP SUM ITEMS

BID ITEM

NO.

DESCRIPTION

BID PRICE

(LUMP SUM)

1.1 F. Wayne Hill Water Resources Center $

1.2 Yellow River Water Reclamation Facility $

PART 1 LUMP SUM ITMES TOTAL: $

5. Bidder submits the following bid prices for the F. Wayne Hill Water Resources Center and Yellow River Water Reclamation Facility Primary Clarifier Rehabilitation project Owner Directed Work identified in the Bid Schedule as part of this bid, supplemental to what is already included in Part 1 – Lump Sum Items. Work included within each bid item in the Bid Schedule is described in Section 01 20 00 – Measurement and Payment.

Bid item quantities are estimated. Bidder acknowledges that actual quantities required will in no way change the unit price.

PART 2 – OWNER DIRECTED WORK ITEMS

BID

ITEM

SPEC

SECTION

DESCRIPTION

ESTIMATED

QUANTITY

UNIT

PRICE

TOTAL

PRICE

2.01 03 01 30 Concrete Crack Repair – Surface Seal Crack Repair

FWHWRC

3,000 LF $ /LF $

2.02 03 01 30 Concrete Crack Repair – Surface Seal Crack Repair

YRWRF

900 LF $ /LF $

2.03 03 01 30 Concrete Crack Repair – Waterproof Injection Crack Repair FWHWRC

1,300 LF $ /LF $

BID DATE: June 30, 2022 July 14, 2022

R19

Part 2 – OWNER DIRECTED WORK ITEMS CONTINUED

SPEC

SECTION

DESCRIPTION

ESTIMATED

QUANTITY

UNIT

PRICE

TOTAL PRICE

2.04 03 01 30 Concrete Crack Repair – Waterproof Injection Crack Repair YRWRF

600 LF $ /LF $

2.05 03 01 30 Concrete Surface Spall Repair FWHWRC

300 SF $ /SF $

2.06 03 01 30 Concrete Surface Spall Repair YRWRF

100 SF $ /SF $

2.07 03 01 30 Concrete Formed Spall Repair FWHWRC

30 CF $ /CF $

2.08 03 01 30 Concrete Formed Spall Repair YRWRF

15 CF $ /CF $

2.09 03 01 30 Concrete Wall Resurfacing

YRWRF

8,700 SF $ /SF $

2.10 03 01 30 Repair of Exposed Metal on Concrete Surfaces FWHWRC

1,000 SF $ /SF $

2.11 03 01 30 Repair of Exposed Metal on Concrete Surfaces YRWRF

140 SF $ /SF $

2.12 03 01 30 FRP Beam Strengthening

FWHWRC

10 EA $ /EA $

2.13 03 01 30 Cement-Based Textured Coating FWHWRC

3,300 SF $ /SF $

2.14 N/A

Core Drilled Hole in Concrete Deck Slab FWHWRC

20 EA $ /EA $

2.15 03 01 30 Expansion Joint Repair

FWHWRC

150 LF $ /LF $

2.16 03 01 30 Expansion Joint Repair

YRWRF

300 LF $ /LF $

2.17 03 01 30 Concrete Beam End Repair

FWHWRC

20 EA $ /EA $

2.18 09 90 00 Steel Painting FWHWRC 980 SF $ /SF $

2.19 09 90 00 Steel Painting YRWRF 100 SF $ /SF $

2.20 09 90 00 Steel Painting Topcoat only

FWHWRC

2,400 SF $ /SF $

2.21 09 90 00 Steel Painting Topcoat only

YRWRF

640 SF $ /SF $

2.22 09 90 00 Existing FRP Hatch Cover painting FWHWRC

1,700 SF $ /SF $

BID DATE: June 30, 2022 July 14, 2022

R20

Part 2 – OWNER DIRECTED WORK ITEMS CONTINUED

SPEC

SECTION

DESCRIPTION

ESTIMATED

QUANTITY

UNIT PRICE TOTAL PRICE

2.23 09 90 00 Existing FRP Hatch Cover painting YRWRF

8,800 SF $ /SF $

2.24 N/A

Effluent Trough Crack Repair FWHWRC

50 LF $ /LF $

2.25 N/A

Effluent Trough New Gaskets FWHWRC

5 EA $ /EA $

PART 2 – Owner-Directed Work Items Total: $

Sub-Total Part 1 – Lump Sum Items: $________________________________

Sub-Total Part 2 – Owner Directed Work Items: $________________________________

Overall Bid Total (Part 1 + Part 2): $________________________________

R27

BIDDER'S AFFIDAVIT

(This Bidder's Affidavit is part of the Bid Documents)

PROJECT NAME: F. Wayne Hill Water Resources Center and Yellow River Water Reclamation Facility Primary Clarifier Rehabilitation

STATE OF )

COUNTY OF )

(Name Printed) being duly sworn, deposes and says that he resides at that he is the

(Title)

(Name of Bidder) who signed the above Bid Form, that he was duly authorized to sign and that the Bid is the true offer of the Bidder, that the seal attached is the seal of the Bidder and that all the declarations and statements contained in the Bid are true to the best of his knowledge and belief.

(Affiant)

Subscribed and Sworn to before me this Day of 20

(Notary Public)

My Commission expires , 20

(SEAL)

R28

FORM OF NON-COLLUSION AFFIDAVIT

(This Non-Collusion Affidavit is Part of the Bid Documents)

PROJECT NAME: F. Wayne Hill Water Resources Center and Yellow River Water Reclamation Facility Primary Clarifier Rehabilitation

STATE OF )

SS

COUNTY OF )

being first duly sworn, deposes and says that he is

(sole owner, partner, president, secretary, etc.)

the party making the foregoing Proposal or Bid; that such Bid is genuine and not collusive or sham; that said Bidder has not colluded, conspired, connived, or agreed, directly or indirectly, with any Bidder or person, to put in a sham Bid, or that such other person shall refrain from bidding, and has not in any manner, directly or indirectly sought by agreement or collusion, or communication or conference, with any person, to fix the Bid Price of affiant or any other Bidder, or to fix any overhead, profit or cost element of said Bid Price, or of that of any other Bidder, or to secure any advantage against Gwinnett County, or any person interested in the proposed Contract; and that all statements in said Proposal or Bid are true; and further, that such Bidder has not, directly or indirectly submitted this Bid, or the contents thereof, or divulged information or data relative thereto to any association or to any member or agent thereof.

(Affiant)

Subscribed and Sworn to before me this Day of 20

(Notary Public in and for)

(County)

My Commission expires , 20

(SEAL)

FWHWRC and YRWRF Primary Clarifier Rehabilitation

Bidder's Monthly Cash Flow Projection Template

Month No.

Estimated Amount of Pay Request for

FWHWRC

Estimated Amount of Pay Request for

YRWRF

1 $X.XX $X.XX

2 $X.XX $X.XX

3 $X.XX $X.XX

4 $X.XX $X.XX

5 $X.XX $X.XX

6 $X.XX $X.XX

7 $X.XX $X.XX

8 $X.XX $X.XX

9 $X.XX $X.XX

10 $X.XX $X.XX

11 $X.XX $X.XX

12 $X.XX $X.XX

13 $X.XX $X.XX

14 $X.XX $X.XX

15 $X.XX $X.XX

16 $X.XX $X.XX

17 $X.XX $X.XX

18 $X.XX $X.XX

19 $X.XX $X.XX

20 $X.XX $X.XX

21 $X.XX $X.XX

22 $X.XX $X.XX

23 $X.XX $X.XX

24 $X.XX $X.XX