Grant_WWTP_and_Collections_11-19-25_0004.pdf

Solicitation 140P2025C0040 YELL 310402 - Grant Wastewater Treatment Plant and Collections and Canyon Collections

Questions and Answers

11/11/2024

A B C D E F G H I

Date Received from NPS

Question No.

Sheet

Detail

Spec

Description (*) Responses Affected Drawings/Specifications

Amendment Number

11/10/2025 1 Volume 1, Sheet 22, 450G046 We do not find a pipe schedule item for buried PD. Will one be issued? Burried PD piping should be CLDI per specification 33 05 01.02. Assume the same characteristics of burried PRES piping for buried PD piping.

Marked up piping schedule (450G046) with updated PD characteristics.

11/10/2025 2 Volume 1, Sheet 23, 450G046 The pipe schedule for PD indicates PVD, however, it references 40 27 --08 which is for SST should it reference 40 27 00.10?

Interior PD should be PVC. Please refer to 40 27 00.10 instead of 40 27 00.08. Marked up piping schedule (450G046) with updated PD characteristics.

11/10/2025 3 Volume 1 Sheet G046 33 05 01.02/33 05 01.12.01

The pipe schedule indicates the "RS" gravity sewer is to be per Spec 33 04 01.02 which is cement lined pipe; however, Specification 33 04 01.12.01 for gravity sewer calls for CL53 pipe with ceraminc epoxy lining. Which is correct?

Use specification 33 05 01.12.01 with CL53 pipe with ceramic epoxy lining for the RS at the WWTP to be consistent with pipes throughought the collection system.

Marked up piping schedule (450G046) with correct specification. Updated spec 33 05 01.01 to have ceramic epoxy lining instead of cement.

11/10/2025 4 Volume 1, Sheet G049 460-ARV-036, 037 are called out to be 1" V750 valves. 1) there is no V750 specified. 2) being on a sewage line there are no ARV's made for sewage under 2". Will a proper specification be issued for these valves or should he 2" V757 be used?

2" V757 air release valves should be used on sewage lines instead of the originally proposed 1" V750.

Marked up valve schedule (450G049)

11/10/2025 5 Vol 1 460-D101 3305-758 Should the buried DIP extend beyond the building footprint before transitioning to HDPE? Buried DIP should extend beyond the building to include the flexible joint detail (3305-

609) before transitioning to HDPE. Use detail 3305-758 for HDPE to DIP transition. 4

11/10/2025 6 VOL 1 455C134/470D301 3305-609 Are Detail 3305-609 flexible joints required at locations where several restrained joints are required such as the bio-reactor splitter box DWG 470D301 Section B?

Yes, flexible joints should be provided at all locations where a pipe exits a structure or encasement.

11/10/2025 7 Vol 1 455C132, 455C631 Pipe coordinate points #263, 264 and 265 indicate 8" pipe fittings. However, they are connecting to the 6" bri line. Profile L on 6" bri line and the 10" ML line be 6" or is the design intent to untilize a 6" x 8" bull head tee to make this connection?

These pipes should all be 6". #263 should be a 6" BRI tee, #264 should be a 6" BRI plug valve, #265 should be a 10" x 6" ML Lateral.

Marked up Control Table (455C631)

11/10/2025 8 450 G046 The pipe schedule indicates material transitions will be shown on the drawings. However, we find no such notations for the HDPE/DI. We only find he PW lines to be labeled "HDPE". Is it correct that the other pipes transition approximately 10" outside the structures?

Transitions may be shown on drawings but please refer to pipe schedule pipe exposure column that coincides with pipe material. Transition occurs at facility. Provide flexible coupling at building. See detail 3305-609 to allow for differential movement then transition to HDPE (see detail 3305-758).

11/10/2025 9 450G049 40 27 02 We find no specification for PRV-475-415 in the intraplant PS valve vault. Would it be a type V716?

PRV-475-415 should be V716. Marked up valve schedule (450G049)

11/10/2025 10 475 -D-401 2331-403 DWG 475-D-401 indicates the 8" vents are to be in accordance with detail 3305-981. This detail cannot be found in the contract documents. Will it be issued?

Detail should be 2331-403 instead. Marked up drawing with detail callout (475D401)

11/10/2025 11 455C524 40 27 02B We find no specification for flap gates for the drain lines. Will one be issued? Valve V690 should have been included in the specification: Type V690 Flap Gate 6 Inches to 96 Inches

type, dual pivot-point hinge arms, hinge arms bronze, hinge pins Type 304 stainless steel, seat bronze and impacted into grooves in body and cover flap, lubrication fittings for each pivot, upper and lower pivot adjustment.

Marked up specification 40 27 02B.

11/10/2025 12 46 66 20 Part 2.01 C.2.c

Section 46 66 20 Part 2.01 C.2.c states the maximum flow per reactor is 0.52 MGD. Our original design was 0.95 MGD per reactor which resulted in the 18 lamp reactor proposed.

This new flow of 0.52 MGD per reactor results in a change from our 18 lamp reactors to our 8 lamp reactors. If the flow is actually 0.52 MGD then the specification will need to be updated for our smaller reactor.

The UV reactor should be designed for a maximum flow of 0.52 MGD. A smaller UV reactor with 8 lamps may be proposed. Specification to be updated: Number of Lamps Per Reactor: 8 or as required to meet maximum flow.

Marked up specification 46 66 20B

11/10/2025 13 Factor - Project Experience - the solicitation requires us to address several topic (teaming experience, remote work, key trades and previous wastewater plant construction experience) -are we supposed to address each of the four topics for each project we include or provide a general response to each topic?

Each topic needs to be addressed with each project.

11/10/2025 14 Factor 5 - Past Performance - can we use a previously completed PPQ or CPARS. Only previous PPQ's will be accepted. The Government will pull CPARS records as part of the evaluation process.

11/10/2025 15 The solicitation includes several forms (Project Experience Form, Project Experience Questionnaire, PPQ, General References) but they are not in a fillable format. Will you please provide the forms in a fillable format?

The word versions of each of these documents is attached.

11/13/2023 16 Is there a planholders list available for this project? Please refer to previous amendment issued for a list of site attendees otherwise no planholders list available.

11/13/2023 17 Is there an online portal/website for accessing future addendum and other bid documents? All documents and amendments are on SAM.gov

11/13/2023 18 Valve Type “V750” (called out on Valve Schedule 2/Drawing 450G049) was not found in Specification 40 27 02. Please provide.

Use Valve Type "V757" in 40 27 02. Marked up valve schedule (450G049)

11/13/2023 19 Specifications 33 05 01.02 & 40 27 00.01, both for Ductile Iron Pipe, have conflicting notes on Mechanical Wedge Action Type Joints for fittings. 33 05 01.02 does not allow for these joints, only at approval of Engineer (Part 2.01E-2.c). 40 27 00.01 allows for these joints with piping less than 16” in diameter (“Fittings” section). Please confirm these joints are allowed per 40 27 00.01.

Both specifications allow mechancial wedge joints for pipes under 16" which applies to all pipes in the collection system and WWTP. These specifications are not conflicting because they apply to different areas of the project. The criteria for use of wedge action joints is layed out in the specifications. 4

Questions and Answers

11/11/2024

A B C D E F G H I

Date Received from NPS

Question No.

Sheet

Detail

Spec

Description (*) Responses Affected Drawings/Specifications

Amendment Number

11/13/2023 20 For preparation of Volume II, which version of Standard Form 1442 should be used — the three-page version included in Sol_140P2025R0102 or the two-page version included in B08_140P2025R0102 ?

The SF 1442 provided as part of the solicitation shall be utilized - 3 page version.

11/13/2023 21 The NPS Small Business Subcontracting Goals include race- and gender-based classifications;

however, under the new DBE standards, those classifications have been removed. Additionally, all Wyoming DBEs and SBEs have been decertified, leaving none currently available for solicitation. With the SBA website also offline, posting projects is not possible. Given these circumstances, can you clarify how bidders can demonstrate a good faith effort to meet the current subcontracting goals?

The NPS has not been required to remove the requirements as of this date even though the requirements may changed with the new "FAR overhaul". Until such time, Offerors shall continue to recruit potential small businesses to meet the required socio-economic goals as presented. If the Offeror is a small business, a subcontracting plan is not required.

11/13/2023 22 One of the specifications states a requirement for Gold Certification with Inductive Automation. Is this a solid requirement? We have familiarity with Ignition (Inductive’s SCADA platform) and have implemented it in the past, but we do not hold the Gold Certification.

Gold Certification for Integrators will be a requirement for this project.

11/13/2023 23 Kubota will not allow use of their membrane by other membrane bioreactor (MBR) equipment OEMs like Cloacina, effectively blocking us or other MBR solution providers out from bidding the opportunityy. We have a flat plate/sheet membrance equivalent to Kubota from Toray, and can also offer hollow fiber membrane "as equals" from DuPont or Veolia whom are the most installed MBR membrances in the country. Please advise.

Or equals will be considered for this project. The membrane equipment supplier (MES) will be responsible for coordinating design changes as required to accommodate alternative membrane equipment.

11/13/2023 24 Drawing #101 176866 Sheet 97 of

Detail 1 has a comment: "Pipe screen, See Note 1" yet there is no "Note 1" on the page.

Please provide "Note 1" for the pipe screen detail.

NOTE 1. PROVIDE ADS CONNECTOR PIPE SCREEN, OR EQUIVALENT, TO PREVENT

DEBRIS AND ROCKS FROM ENTERING PIPE DRAIN.

Marked up drawing 455C508

11/13/2023 25 Drawing #101 176866 Sheet 111 of

Detail 1 has a comment: "4" Removable Bollard, TYP 4, Locate at Corners of Concrete Pad".

However, there is no removable bollard detail provided. Please provide removable bollards.

The bollards do not need to be removable. The standard bollard detail, 3305-954, may be used.

Marked up drawing 455C522

11/13/2023 26 Is there an online portal/website for accessing future addendum and other bid documents? Please see SAM.gov

11/13/2023 27 Section 09 96 35 - Part 2 Products, Item 1 CRC-4

Raven is listed as the Basis of Design (BOD) "or equal" is allowed. Would you prefer that any "or equal" products be pre-approved? We're planning to submit Corobond 100, Dura-Plate 2300 and Dura-Plate 6100 for consideration. I'm happy to complete a formal substitution request and provide case histories if that would be helpful.

"Or equal" products allowed unless otherwise stated. Manufacturer is responsible for checking that the product will meet the specification. "Or equal" products will be evaluated as referenced in Q32 denoted below.

11/13/2023 28 Section 2.03 - Coating Systems:

CRC-4

The specification calls for 1) Moisture resistant epoxy primer (2 MDFT), 2) 100% solids epoxy surfacer/filler; 3) Corrosion Barrier Lining: One coat of trowel-grade, 100% solids, chemical-resistant, amine-cured epoxy lining material (125 MDFT). Could you please confirm whether the Corrosion Barrier Lining must be trowel-grade or if a plural spray application would be acceptable?

Either trowel-grade or plural spray application is acceptable.

11/13/2023 29 On the Plan Sheet Titled Grant Village Site Map, it shows an area "5" that could likely be used for an onsite batch plant. That same sheet shows a water line to that area. Is that water potable and can we use it for batching concrete? If so do we know how many gallons per minute we can get out of it?

Water line is not active. Contractor should plan on having to haul water to whichever pit they decide to use for a batch plant. The NPS can provide access to a fire hydrant in the Grant area where they can take water. 4

Questions and Answers

11/11/2024

A B C D E F G H I

Date Received from NPS

Question No.

Sheet

Detail

Spec

Description (*) Responses Affected Drawings/Specifications

Amendment Number

11/13/2023 30 We received information from a concerned design-build improvement contractor in regards to the dewatering facility ground improvements. Here is their question: We are evaluating the ground improvement for the dewatering facility. The ground improvement specifications, attached to this email, have performance criteria that needs to be met for the design and installation. One of the criteria in the performance spec sections requires that ground improvement have a minimum depth of 35 feet or Elevation 7,785 feet. Based on the boring logs in the vicinity of the dewatering facility, see attached profile, it will be very challenging, if not impossible, to improve the ground to that depth because the blow counts. Specifically, boring SW-G-04 has very high blow counts and are not practical for ground improvement.

Whether the design-build contractor is installing stone columns or rammed aggregate piers, it will be very challenging to meet the depth requirements. We typically would try to predrill some of the higher blow counts to help with penetration, but because of the extensive depth of dense to very dense soil is not feasible. Even using high pressure air or water, which the stone column installers may use will have difficulty and likely cause quite a bit of collateral damage to the working pad and result in a lot of clean up. It is our opinion that this type of performance specification may result in a large change order to the project.

We recommend seeing if the geotechnical engineer would be okay with an approach of driving the mandrel to practical refusal and build the piers from that depth. It is likely that in some areas we can get to 35 feet, but some of the layers are dense to very dense and we’ll have mandrel refusal.

If needed we would be happy to facilitate a call between the Design engineer and this specialty contractor, just let us know and I can provide contact information.

Subsurface information is not available within the footprint of the dewatering facility.

The requirement in Article 3.02.A.5.a of Section 31 23 13.31 that ground improvement elements be terminated no shallower than the target depth specified in Table 1 will be relaxed if information showing that refusal materials encountered above the target depth are consistent below that depth and not underlain by looser materials.

11/13/2023 31 In the summary of work under Item (b), it states that we are to empty and dewater Aeration Pond #1 and Aeration Pond #2. It further states that we are to dewater the sludge before it goes into the drying beds to 12 percent. What volume of sludge in the ponds should each contractor carry in their proposal?

Aeration Pond #1 and Aeration Pond #2 can hold 1.8 MG. It should be assumed that contractors will need to dewater 1.8 MG of sludge at 1,500 mg/L TSS (0.15% solid).

11/13/2025 32 Will product substitutions need to be provided during the solicitation phase or after contract award.

Per 52.211-6 Brand Name or Equal (AUG 1999) provides that "to be considered for award, offers of "equal" products, including "equal" products of the brand name manufacturer, must (1) meet the salient physical, functional, or performance characteristics specified in the solicition; (2) clearly identify the item by i) brand name, if any; and ii) make or model number; (3) include descriptive literature such as illustrations, drawings, or a clear reference to previously furnished descriptive data or information available to the Contracting Officer; and (4) clearly describe any modifications the Offeror plans to make in a product to make it conform to the solicitation requirements. Mary any descriptive material to clearly show the modifications." This information must be supplied with the Offeror's proposal for consideration during the evaluation phase of the solicitation. The Contracting Officer will evaluate "equal" products on the basis of information furnished by the Offeror or identified in the offer and reasonably available to the Contracting Officer. The Contracting Officer is not responsible for locating or obtaining any inforamtion not identified in the offer.

PW\JA\NPS\D3167659\4\42 DUCTILE IRON PIPE AND FITTINGS

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SECTION 33 05 01.02

DUCTILE IRON PIPE AND FITTINGS

PART 1 GENERAL

1.01 APPLICABILITY

A. This section is to be used for buried piping on the treatment plant site per the

Pipe Schedule.

1.02 REFERENCES

A. The following is a list of standards that may be referenced in this section:

1. American Association of State Highway and Transportation Officials

(AASHTO): T99, Standard Method of Test for the Moisture-Density

Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm

(12-in.) Drop.

2. American Society of Mechanical Engineers (ASME):

a. B16.21, Nonmetallic Flat Gaskets for Pipe Flanges.

b. B16.42, Ductile Iron Pipe Flanges and Flanged Fittings

Classes 150 and 300.

3. American Water Works Association (AWWA):

a. C104/A21.4, Cement-Mortar Lining for Ductile-Iron Pipe and

Fittings.

b. C105/A21.5, Polyethylene Encasement for Ductile-Iron Pipe

Systems.

c. C110/A21.10, Ductile-Iron and Gray-Iron Fittings.

d. C111/A21.11, Rubber-Gasket Joints for Ductile-Iron Pressure

Pipe and Fittings.

e. C115/A21.15, Flanged Ductile-Iron Pipe with Ductile-Iron or

Gray-Iron Fittings.

f. C116/A21.16, Protective Fusion-Bonded Epoxy Coatings for the

Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron

Fittings for Water Supply Service.

g. C150/A21.50, Thickness Design of Ductile-Iron Pipe.

h. C151/A21.51, Ductile-Iron Pipe. Centrifugally Cast, for Water.

i. C153/A21.53, Ductile-Iron Compact Fittings for Water Service.

j. C600, Installation of Ductile-Iron Water Mains and Their

Appurtenances.

k. C606, Grooved and Shouldered Joints.

4. ASTM International (ASTM):

a. A307, Standard Specification for Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength.

b. A563, Standard Specification for Carbons and Alloy Steel Nuts.

DUCTILE IRON PIPE AND FITTINGS PW\JA\NPS\D3167659\4\42

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c. D882, Standard Test Method for Tensile Properties of Thin Plastic

Sheeting.

d. D1330, Standard Specification for Rubber Sheet Gaskets.

e. D1922, Standard Test Method for Propagation Tear Resistance of

Plastic Film and Thin Sheeting by Pendulum Method.

f. D2000, Standard Classification System for Rubber Products in

Automotive Applications.

g. D4976, Standard Specification for Polyethylene Plastics Molding and Extrusion Materials.

5. International Organization for Standardization (ISO): 9001, Quality

Management Systems – Requirements.

1.03 SUBMITTALS

A. Action Submittals:

1. Shop Drawings: Marking plan and details of standard pipe section showing dimensions, pipe joints, fitting and special fitting pressure rating and thickness, size, coating, and lining data.

B. Informational Submittals:

1. Manufacturer’s Certificate of Compliance, in accordance with

Section 01 67 00, Product Requirements, stating that inspections and specified tests have been made and that results thereby comply with requirements of Article Source Quality Control.

2. Manufacturer shall furnish sworn certificates that pipe and fittings have been manufactured, tested, and inspected in accordance with this and all applicable Specifications.

3. Field Hydrostatic Testing Plan:

a. Submit at least 15 days prior to testing and at minimum, include the following:

1) Testing dates.

2) Piping systems and section(s) to be tested.

3) Method of isolation.

4) Method of conveying water from source to system being tested.

5) Calculation of maximum allowable leakage for piping section(s) to be tested.

4. Certifications of Calibration: Approved testing laboratory certificate if pressure gauge for hydrostatic test has been previously used. If pressure gauge is new, no certificate is required.

5. Test documentation form and results.

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1.04 QUALITY ASSURANCE

A. Pipe manufacturer shall be ISO 9001 registered or provide the services of an independent inspection agency.

B. Prior to start of manufacturing, manufacturer not meeting or having ISO registration requirements shall submit name of at least two independent inspection agencies for approval.

1. Independent inspection agency shall be responsible, on a daily basis, for sample monitoring of chemical and mechanical tests, sample visual inspection of quality assurance tests performed on in-process pipe and fittings, and sample visual and dimensional inspection on finished products.

PART 2 PRODUCTS

2.01 MATERIALS

A. Manufacturers and Products:

1. U.S. Pipe; TR Flex and HP Lok.

2. Or equal.

B. General:

1. Ductile iron pipe shall be manufactured, lined, coated, and tested domestically in the United States of America.

2. Ductile iron fittings shall be manufactured, lined, coated, and tested domestically in the United States of America.

3. Pipe and fittings shall be new and recently manufactured. Refurbished pipe and fittings shall not be provided.

4. Pipe manufacturer shall certify source manufacturing facility has been producing ductile iron pipe of the specified diameters, pressure, dimensions, and standards for a period of not less than 10 years.

5. Ductile iron pipe and fitting shall be supplied by a single manufacturer.

6. Mixing of components and sources is not permitted.

C. Physical Characteristics:

1. Pipe:

a. Lined and coated as specified.

b. Centrifugally cast, grade 60-42-10 iron.

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2. Fittings:

a. Mechanical, push-on, flanged, or restrained joint ductile iron fittings.

b. Rubber gasket joints.

c. Lining: Ceramic Epoxy Lining such as Protecto 401.Cement mortar for all services except scum services which shall have glass lining.

3. Bio-Enhanced Polyethylene Encasement:

a. Film: 0.008 inch (8 mil) thick, minimum.

1) Number of Film Layers: Three.

4. Bolting:

a. Flanged Connection Bolts: Carbon steel.

b. Grooved End Connections Bolts: Manufacturer’s standard.

D. Functional Characteristics: None.

E. Performance Characteristics:

1. Pipe:

a. Meet requirements of AWWA C150/A21.50, AWWA C151/A21.51, and AWWA C111/A21.11.

b. Pressure rating of pipe from 4 inches to 24 inches in diameter shall be 350 psi.

c. Pipe wall thickness of threaded pipe for a flanged pipe end shall be minimum special thickness Class 53 from 12-inch to 54-inch diameter pipe in accordance with AWWA C115/A21.15.

d. Grooved end pipe shall be minimum Special Class 53.

2. Joints:

a. Push-On Joint: Rated at minimum working pressure equal to pipe material design.

b. Restrained Joint: Manufactured proprietary joint that mechanically restrains pipe to adjoining pipe.

c. Mechanical Wedge Action Type Joint:

1) Use only in areas where adjoining to fixed points where laying length is determined in field.

2) Prior to purchase and installation, type and application of this joint shall be approved by Contracting Officer.

d. Use of set screws for restraint or field-lock gaskets shall not be allowed.

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3. Fittings:

a. Mechanical, Push-On, Flanged, or Restrained Joint:

1) In accordance with the following tables:

Minimum Pressure Ratings for AWWA C110/A21.10 and C115/A21.15 Ductile Iron Fittings

Diameter

(inches)

Rubber Gasket Joints

(Push-on, Mechanical, Restrained)

(psi)

Flanged Joints

(psi)

3 to 24 350 250

30 to 48 250 250

Minimum Pressure Ratings for AWWA C153/A21.53

Ductile Iron Fittings

Diameter

(inches)

Rubber Gasket Joints

(Push-on, Mechanical, Restrained)

(psi) Flanged Joints

3 to 24 350 Not included in

C153/A21.53 (refer to the C110/A21.10

Standard)

30 to 48 250 Not included in

C153/A21.53 (refer to the C110/A21.10

Standard)

54 to 64 150 150 psi

b. Rubber Gasket Joints Including Mechanical Joints, Push-On

Joints, and Flanged Joints: In accordance with

AWWA C111/A21.11.

c. Mechanical Joint Fittings: In accordance with

AWWA C110/A21.10 and AWWA C153/A21.53.

d. Must meet requirements of NSF 61.

4. Welded Outlet: Only weld to pipe in manufacturer’s shop.

5. Lining: Pipe and fittings provide Ceramic Epoxy Lining such as

Protecto 401.cement mortar lining for all services except scum services which shall have glass lining.

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6. Coating: Provide zinc rich primer at manufacturer recommended thickness. Conform to ISO 8179-1, Ductile iron pipes – External zinc-based coating, Part 1: Metallic zinc with finishing layer. Second edition

2004-06-01.

a. Minimum Mass of Zinc Applied: 200 grams per square meter of pipe surface area. Apply finishing asphaltic topcoat over zinc coating with topcoat mean dry film thickness not less than 3 mils with a local minimum not less than 2 mils.

7. Polyethylene Encasement:

a. Bio-Enhanced Polyethylene Encasement: Three layers of co-extruded linear low density polyethylene with inside surface wrap to be in contact with pipe infused with a blend of anti-microbial biocide to mitigate microbiologically induced corrosion.

b. Elongation: 800 percent, minimum, in machine and transverse direction (ASTM D882).

c. Tensile Strength: 3,600 psi, minimum.

d. Dielectric Strength: 800V per mil-thickness, minimum.

8. Bolting:

a. Flanged Connection Bolts: Carbon steel, ASTM A307, Grade A hex bolts and ASTM A563, Grade A hex head nuts.

b. Grooved End Connections Bolts: Manufacturer’s standard.

9. Gaskets:

a. Flat Faced Flange Gaskets:

1) Pipe Smaller than 54 Inches: Rated for working pressure

150 psi to 250 psi, 1/8-inch thick, red rubber (SBR), hardness 80 (Shore A), rated to 200 degrees F, conforming to ASME B16.21, AWWA C207, and ASTM D1330, Grade 1 and Grade 2.

2) Grooved End Joint Gaskets: Halogenated butyl, conforming to ASTM D2000 and AWWA C606.

2.02 SOURCE QUALITY CONTROL

A. Factory Tests:

1. General:

a. Tests shall be performed on pipe with metal thickness equal to that specified.

b. Only pipe that passes leak test shall be shipped.

2. Hydrostatic Proof Test:

a. All Pipe: Perform at 500 psi for a minimum duration of

10 seconds.

b. Pipe 30 Inches and Larger: Additionally test to 75 percent of minimum yield strength during test duration which shall not be less than 15 seconds.

c. Record each test cycle on a strip chart.

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d. Each test cycle for 30-inch and larger pipe shall be marked by pipe number.

e. Inspect each pipe during testing for leaks.

f. Pipe which shows evidence of leaks shall be scrapped.

g. Repair welding of leaks is not permitted.

3. Perform a 15-psi air test on welded-on outlet pipe.

4. Pipe ends (spigot end, bell, and socket) shall be gauged with suitable gauges at sufficiently frequent intervals to ensure compliance to standard dimensions of AWWA C151/A21.51.

a. In addition, each socket and spigot shall be inspected in a well lighted area for injurious defects which could affect the joint performance.

b. Remove defects by cutting of pipe ends.

c. Pipe with injurious defects in the bell shall be scrapped.

d. Manufacturer shall have a recommended ovality tolerance for pipes 18 inches inch and larger.

e. Each end of each 18-inch and larger pipe shall be measured and approved by manufacturer’s quality assurance inspector to meet tolerances.

5. Submit a certified inspection report from the independent agency of witnessed tests within 10 days of the inspection.

a. Test results shall show restrained joints in the sizes specified have been successfully tested to at least twice the specified pressure rating of the joint without leakage or failure.

6. In accordance with AWWA C104/A21.4, AWWA C110/A21.10, AWWA C111/A21.11, AWWA C115/A21.15, AWWA C151/A21.51, AWWA C153/A21.53, and AWWA C606.

PART 3 EXECUTION

3.01 EXAMINATION

A. Inspect pipe and fittings to ensure no cracked, broken, or otherwise defective materials are being used.

3.02 PREPARATION

A. Trench Grade:

1. When specified, grade bottom of trench by hand to specified line and grade with proper allowance for pipe thickness and pipe base. Trench bottom shall form a continuous and uniform bearing and support for pipe between bell holes.

2. Before laying each section of pipe, check grade and correct irregularities found. Grade may be disturbed for removal of lifting tackle.

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B. Pipe Bedding:

1. Place and compact pipe bedding material as follows:

a. Install to full width of trench, from the following depths below bottom to springline of pipe:

1) Pipe 12-Inch Diameter: 4 inches to 6 inches.

2) Pipe Larger than 12-Inch Diameter: 6 inches to 8 inches.

b. Compact to at least 95 percent of its maximum density as determined by AASHTO T99.

c. Ensure that no unfilled or uncompacted areas occur beneath pipe.

C. Bell (Joint) Holes: At each joint, dig bell holes of ample dimensions in bottom of trench, and at sides where necessary, to permit joint to be made properly and to permit easy visual inspection of entire joint.

3.03 INSTALLATION

A. General:

1. Provide and use proper implements, tools, and facilities for safe and proper prosecution of the Work.

2. Lower pipe, fittings, and appurtenances into trench, piece by piece, by means of a crane, slings, or other suitable tools and equipment, in such a manner as to prevent damage to pipe materials, protective coatings and linings.

3. Do not drop or dump pipe materials into trench.

B. Cleaning Pipe and Fittings:

1. Remove lumps, blisters, and excess coal tar coating from bell and spigot ends of each pipe. Wire brush outside of spigot and inside of bell and wipe clean, dry, and free from oil and grease before pipe is laid.

2. Wipe ends of mechanical joint pipe and fittings and of rubber gasket joint pipe and fittings clean of dirt, grease, and foreign matter.

C. Laying Pipe:

1. Direction of Laying: Lay pipe with bell end facing in direction of laying. For lines on an appreciable slope, face bells upgrade at discretion of Contracting Officer.

2. Mechanical Joint, Push-On Joint, and Restrained Joint Pipe: After first length of pipe is installed in trench, secure pipe in place with approved backfill material tamped under and along sides to prevent movement.

Keep ends clear of backfill. After each section is jointed, place backfill as specified to prevent movement.

3. Take precautions necessary to prevent floating of pipe prior to completion of backfill operation.

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4. When using movable trench shield, take necessary precautions to prevent pipe joints from pulling apart when moving shield ahead.

5. Do not allow foreign material to enter pipe while it is being placed in trench.

6. Close and block open end of last laid section of pipe to prevent entry of foreign material or creep of gasketed joints when laying operations are not in progress, at close of day’s work, or whenever workers are absent from job.

D. Joining Push-On Joint Pipe and Mechanical Joint Fittings:

1. Join pipe with push-on joints and mechanical joint fittings in accordance with manufacturer’s recommendations.

2. Provide special tools and devices, such as, special jacks, chokers, and similar items required for installation.

3. Lubricate pipe gaskets using lubricant furnished by pipe manufacturer.

No substitutes will be permitted.

4. Clean ends of fittings of dirt, mud, and foreign matter by washing with water and scrubbing with a wire brush, after which, slip gland and gasket on plain end of pipe. If necessary, lubricate end of pipe to facilitate sliding gasket in place, then guide fitting onto spigot of pipe previously laid.

E. Ball Joint Pipe:

1. Assemble and install in accordance with manufacturer’s recommendations.

2. Hydrostatic Test:

a. Conduct on ball joint pipe independent of other pipe systems/type being installed.

b. Conduct test in accordance with requirements of these

Specifications and manufacturer’s recommendations.

F. Cutting Pipe:

1. General: Cut pipe for inserting valves, fittings, or closure pieces in a neat and workmanlike manner without damaging pipe or lining and to leave a smooth end, at right angles to axis of pipe.

2. Pipe: Cut pipe with milling type cutter or saw. Do not flame cut.

3. Dressing Cut Ends: Dress cut end of mechanical joint pipe to remove sharp edges or projections, which may damage rubber gasket. Dress cut ends of push-on joint pipe by beveling, as recommended by manufacturer.

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G. Field Welding:

1. Use of field welded outlets will not be allowed. Welding for outlets shall be performed only in pipe manufacturer’s shop.

2. Field installed outlets may be installed with saddle approved by

Contracting Officer. Opening in pipe shall be machined cut and not with cutting torch.

3. Field welding of bars for restrained joint systems will not be allowed unless approved by Contracting Officer. Welding shall be performed in pipe manufacturer’s shop.

H. Line and Grade:

1. Minimum Pipe Cover: 3 feet, unless otherwise indicated.

2. No high points will be allowed between air valves.

3. Maintain pipe grade between invert elevations to provide minimum clearance at air valve locations of 4 feet from existing ground surface to top of pipe.

4. Install air valves as shown and field verify intervening low points.

When field conditions warrant, exceptions may be made upon approval of Contracting Officer.

5. Deviations exceeding 6 inches from specified line or 1 inch from specified grade will not be allowed without express approval of

Contracting Officer.

6. Pipeline sections that are not installed to elevations shown or installed as approved by Contracting Officer shall be reinstalled to proper elevation.

I. Thrust Restraint: Primary method of restraint shall be through use of restrained joint pipe. Thrust blocking shall be used where detailed on the

Drawings and as approved by Contracting Officer.

J. Backfill for Pipe Zone:

1. Place and compact pipe zone material in accordance with

Section 31 23 23.15, Trench Backfill, and as follows:

a. After pipe bedding is in place, place imported granular material at approximately same rate on each side of pipe.

b. Place such that backfill elevation of is approximately equal on each side of pipe at all times.

c. Place to the following depths:

1) 12-Inch Diameter Pipe: 4 inches to 6 inches above top of pipe barrel.

2) Pipe Larger than 12 Inches in Diameter: 6 inches to

12 inches above top of pipe barrel.

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d. Compact material to top of pipe zone in 6-inch lifts, to at least

95 percent of its maximum density, as determined by

AASHTO T99.

K. Polyethylene Encasement:

1. Encase pipe, fittings, and valves where specified in accordance with

AWWA C105/A21.5, Method A.

2. Cut polyethylene tube approximately 2 feet longer than pipe length.

3. Slip tube around pipe, centering to provide 1-foot overlap on each adjacent section.

4. Pull encasement to take out slack and wrap snug around pipe.

5. Secure overlap in place and fold at quarter points of pipe length.

6. Wrap and tape encasement snug around fittings and valves.

L. Cathodic Protection, Joint Bonding, and Test Stations: Not applicable.

3.04 HYDROSTATIC TESTING

A. Pipeline Hydrostatic Test:

1. General:

a. Notify Contracting Officer in writing 5 days in advance of testing.

Perform testing in presence of Contracting Officer.

b. Test newly installed pipelines. Using water as test medium, pipes shall successfully pass a leakage test prior to acceptance.

c. Furnish testing equipment and perform tests in manner satisfactory to Contracting Officer. Testing equipment shall provide observable and accurate measurements of leakage under specified conditions.

d. Isolate new pipelines that are connected to existing pipelines.

e. Conduct tests on entire pipeline after trench has been backfilled.

Testing may be done prior to placement of asphaltic concrete or roadway structural section.

f. Contractor may, if field conditions permit and as determined by

Contracting Officer, partially backfill trench and leave joints open for inspection and conduct an initial service leak test. Hydrostatic test shall not, however, be conducted until backfilling has been completed.

g. Supply of temporary water shall be as stated in Section 01 50 00, Temporary Facilities and Controls.

h. Dispose of water used in testing.

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2. Procedure:

a. Maximum filling velocity shall not exceed 0.25 foot per second, calculated based on the full area of pipe.

b. Expel air from pipe system during filling. Expel air through air release valve or through corporation stop installed at high points and other strategic points.

c. Test pressure shall be 100 psi above system operating pressure.

d. Test pressure shall be 125 percent of system operating pressure.

e. Apply and maintain specified test pressure with hydraulic force pump. Valve off piping system when test pressure is reached.

f. Maintain hydrostatic test pressure continuously for 2 hours minimum, adding additional make-up water only as necessary to restore test pressure.

g. Determine actual leakage by measuring quantity of water necessary to maintain specified test pressure for duration of test.

h. If measured leakage exceeds allowable leakage or if leaks are visible, repair defective pipe section and repeat hydrostatic test.

3. Allowable Leakage: Allowable leakage is zero, except as approved by the Contracting Officer.

END OF SECTION

PW\JA\NPS\D3167659\4\42 PROCESS VALVES AND OPERATORS

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SECTION 40 27 02

PROCESS VALVES AND OPERATORS

PART 1 GENERAL

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this section:

1. American Gas Association (AGA): 3, Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids.

2. American National Standards Institute (ANSI): Z21.15, Manually

Operated Gas Valves for Appliances, Appliance Connector Valves and

Hose End Valves.

3. American Society of Mechanical Engineers (ASME):

a. B16.1, Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250.

b. B16.44, Manually Operated Metallic Gas Valves for Use in

Above Ground Piping Systems up to 5 psi.

4. American Society of Sanitary Engineers (ASSE): 1011, Performance

Requirements for Hose Connection Vacuum Breakers.

5. American Water Works Association (AWWA):

a. C111/A21.11, Rubber-Gasket Joints for Ductile-Iron Pressure

Pipe and Fittings.

b. C500, Metal-Seated Gate Valves for Water Supply Service.

c. C504, Rubber-Seated Butterfly Valves, 3 In. (75 mm) Through

72 In. (1,800 mm).

d. C508, Swing-Check Valves for Waterworks Service, 2-In.

Through 24-In. (50-mm Through 600-mm) NPS.

e. C509, Resilient-Seated Gate Valves for Water Supply Service.

f. C510, Double Check Valve Backflow Prevention Assembly.

g. C511, Reduced-Pressure Principle Backflow Prevention

Assembly.

h. C512, Air-Release, Air/Vacuum, and Combination Air Valves for

Waterworks Service.

i. C515, Reduced-Wall, Resilient-Seated Gate Valves for Water

Supply Service.

j. C541, Hydraulic and Pneumatic Cylinder and Vane-Type

Actuators for Valves and Slide Gates.

k. C542, Electric Motor Actuators for Valves and Slide Gates.

l. C550, Protective Interior Coatings for Valves and Hydrants.

m. C606, Grooved and Shouldered Joints.

n. C800, Underground Service Line Valves and Fittings.

PROCESS VALVES AND OPERATORS PW\JA\NPS\D3167659\4\42

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6. ASTM International (ASTM):

a. A276, Standard Specification for Stainless Steel Bars and Shapes.

b. A351/A351M, Standard Specification for Castings, Austenitic, for

Pressure-Containing Parts.

c. A380, Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems.

d. A564/A564M, Standard Specification for Hot-Rolled and Cold-

Finished Age-Hardening Stainless Steel Bars and Shapes.

e. B61, Standard Specification for Steam or Valve Bronze Castings.

f. B62, Standard Specification for Composition Bronze or Ounce

Metal Castings.

g. B98/B98M, Standard Specification for Copper-Silicon Alloy Rod, Bar, and Shapes.

h. B127, Standard Specification for Nickel-Copper Alloy

(UNS N04400) Plate, Sheet, and Strip.

i. B139/B139, Standard Specification for Phosphor Bronze Rod, Bar and Shapes.

j. B164, Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire.

k. B194, Standard Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar.

l. B584, Standard Specification for Copper Alloy Sand Castings for

General Applications.

m. D429, Standard Test Methods for Rubber Property-Adhesion to

Rigid Substrates.

n. D1784, Standard Specification for Rigid Poly(Vinyl Chloride)

(PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC)

Compounds.

7. Canadian Standards Association, Inc. (CSA): 9.1, Manually Operated

Gas Valves for Appliances, Appliance Connector Valves and Hose End

Valves.

8. Chlorine Institute (CI): Pamphlet 6, Piping Systems for Dry Chlorine.

9. FM Global (FM).

10. Food and Drug Administration (FDA).

11. International Association of Plumbing and Mechanical Officials

(IAPMO).

12. Manufacturers Standardization Society (MSS):

a. SP-80, Bronze Gate, Globe, Angle, and Check Valves.

b. SP-81, Stainless Steel, Bonnetless, Flanged Knife Gate Valves.

c. SP-85, Gray Iron Globe and Angle Valves, Flanged and Threaded

Ends.

d. SP-88, Diaphragm Valves.

e. SP-110, Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends.

13. National Electrical Manufacturers Association (NEMA): 250, Enclosures for Electrical Equipment (1000 Volts Maximum).

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14. NSF International (NSF):

a. NSF/ANSI 61, Drinking Water System Components - Health

Effects.

b. NSF/ANSI 372, Drinking Water System Components - Lead

Content.

15. UL.

16. USC Foundation for Cross-Connection Control and Hydraulic Research.

1.02 SUBMITTALS

A. Action Submittals:

1. Shop Drawings:

a. Product data sheets for each make and model. Indicate valve Type

Number, applicable Tag Number, and facility name/number or service where used.

b. Complete catalog information, descriptive literature, specifications, and identification of materials of construction.

c. Certification for compliance to NSF/ANSI 61 for valves used for drinking water service.

d. Power and control wiring diagrams, including terminals and numbers.

e. For each power actuator provided, manufacturer’s standard data sheet, with application specific features and options clearly identified.

f. Sizing calculations for open-close/throttle and modulating valves.

g. Anchorage and bracing drawings and cut sheets, as required by

Section 01 88 15, Anchorage and Bracing.

B. Informational Submittals:

1. Anchorage and bracing calculations as required by Section 01 88 15, Anchorage and Bracing.

2. Manufacturer’s Certificate of Compliance, in accordance with

Section 01 67 00, Product Requirements, for:

a. Electric actuators; full compliance with AWWA C542.

b. Butterfly valves; full compliance with AWWA C504.

3. Component and attachment testing seismic certificate of compliance as required by Section 01 45 33, Special Inspection, Observation, and

Testing.

4. Tests and inspection data.

5. Operation and Maintenance Data as specified in Section 01 78 23, Operation and Maintenance Data.

6. Manufacturer’s Certificate of Proper Installation in accordance with

Section 01 79 00, Demonstration and Training.

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PART 2 PRODUCTS

2.01 GENERAL

A. Valve Physical Characteristics:

1. Valves to include operator, actuator, handwheel, chain wheel, extension stem, floor stand, operating nut, chain, wrench, and accessories to allow a complete operation from the intended operating level.

2. Valve same size as adjoining pipe, unless otherwise called out on the

Drawings or in Supplements.

3. Valve ends to suit adjacent piping.

4. Factory mount operator, actuator, and accessories.

5. Use or reuse of components and materials without a traceable certification is prohibited.

B. Valve Functionality Characteristics:

1. Size operators and actuators to operate valve for full range of pressures and velocities.

2. Valve to open by turning counterclockwise, unless otherwise specified.

C. Valve Performance Characteristics:

1. Valve to be suitable for intended service. Renewable parts not to be of a lower quality than specified.

2. Resilient seated valves shall have no leakage (drip-tight) in either direction at valve rated design pressure. All other valves shall have no leakage (drip-tight) in either direction at valve rated design pressure, unless otherwise allowed for in this section or in stated valve standard.

3. Components and Materials in Contact with Water for Human

Consumption: Comply with the requirements of the Safe Drinking

Water Act and other applicable federal, state, and local requirements.

Provide certification by manufacturer or an accredited certification organization recognized by the Authority Having Jurisdiction that components and materials comply with the maximum lead content standard in accordance with NSF/ANSI 61 and NSF/ANSI 372.

2.02 SCHEDULE

A. Additional requirements relative to this section are shown on the Electric

Actuated Valve Schedule and Self-Regulated Valve Schedule located on the

Drawings.

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2.03 MATERIALS

A. Physical Characteristics:

1. Bronze and brass valve components and accessories that have surfaces in contact with water to be alloys containing less than 16 percent zinc and 2 percent aluminum.

a. Approved alloys are of the following ASTM designations: B61, B62, B98/B98M (Alloy UNS No. C65100, C65500, or C66100), B139/B139M (Alloy UNS No. C51000), B584 (Alloy UNS

No. C90300 or C94700), B164, B194, and B127.

b. Stainless steel Alloy 18 8 may be substituted for bronze.

B. Performance Characteristics:

1. Valve materials in contact with or intended for drinking water service to meet the following requirements:

a. Materials to comply with requirements of the Safe Drinking Water

Act and other applicable federal, state, and local requirements.

b. Coatings materials to be formulated from materials deemed acceptable to NSF/ANSI 61.

c. Supply certification product is certified as suitable for contact with drinking water by an accredited certification organization in accordance with NSF/ANSI 61. Provide certification for each valve type used for drinking water service.

C. Functional Characteristics: None.

2.04 FACTORY FINISHING

A. Physical Characteristics: None.

B. Performance Requirements:

1. Interior coatings for valves and hydrants shall be in accordance with

AWWA C550, unless otherwise specified.

2. Exterior coating for valves and hydrants shall be in accordance with

Section 09 90 00, Painting and Coating.

3. Material in contact with potable water shall conform to NSF/ANSI 61.

4. Exposed safety isolation valves and lockout valves with handles, handwheels, or chain wheels shall be “safety yellow.”

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5. Where epoxy lining and coating are specified, factory finishing shall be as follows:

a. In accordance with AWWA C550.

b. Either two-part liquid material or heat-activated (fusion) material except only heat-activated material if specified as “fusion” or

“fusion bonded” epoxy.

c. Minimum 7-mil dry film thickness except where limited by valve operating tolerances.

C. Functional Characteristics: None.

2.05 VALVES

A. Gate Valves:

1. Physical Characteristics:

a. Provide 2 inch operating nut and handwheel for AWWA gate valves 12 inches and smaller.

b. Provide totally enclosed spur or bevel gear operator with indicator for AWWA gate valves 14 inches and larger.

c. Mark AWWA gate valves with manufacturer’s name or mark, year of valve casting, valve size, and working water pressure.

d. Supply AWWA gate valves with stainless steel bolting.

2. Functional Characteristics: Repaired AWWA gate valves shall not be submitted or supplied.

3. Performance Characteristics:

a. AWWA gate valves to be in full compliance with stated AWWA standard and the following requirements:

1) Provide Affidavit of Compliance per the applicable AWWA standard for AWWA gate valves.

2) AWWA C509 and AWWA C515 valves may be substituted for each other.

4. Type V132 Resilient Seated Gate Valve 3 Inches to 12 Inches, for

Buried Service:

a. Manufacturers and Products:

1) M&H Valve; AWWA C509.

2) Or equal.

b. Physical Characteristics: Iron body, resilient seat, bronze stem and stem nut, ASME B16.1, Class 125 mechanical joint ends, non-rising stem.

c. Functional Characteristics: None.

d. Performance Characteristics: In accordance with AWWA C509, minimum design working water pressure 200 psig, full port, fusion-epoxy coated inside and outside per AWWA C550.

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5. Type V137 Resilient Seated Gate Valve 4 Inches to 12 Inches:

a. Manufacturers and Products:

1) Kennedy Valve; Ken-Seal II.

2) Or equal.

b. Physical Characteristics: Iron body, resilient seat, bronze mounted, mechanical joint ends, nonrising stem, 2-inch operating nut.

c. Functional Characteristics: Approved for fire protection.

d. Performance Characteristics: UL Listed and FM, in accordance with AWWA C509, design working water pressure 200 psig, full port, fusion-epoxy coated inside and outside per AWWA C550.

B. Ball Valves:

1. Type V300 Ball Valve 3 Inches and Smaller for General Water and Air

Service:

a. Manufacturers and Products:

1) Threaded:

a) Conbraco Apollo; 70-100.

b) Or equal.

2) Soldered:

a) Conbraco Apollo; 70-200.

b) Or equal.

b. Physical Characteristics: Two-piece, standard port, NPT threaded ends, bronze body and end piece, hard chrome-plated solid bronze or brass ball, RTFE seats and packing, blowout-proof stem, adjustable packing gland, zinc-coated steel hand lever operator with vinyl grip.

c. Functional Characteristics: None.

d. Performance Characteristics: Rated 600-pound WOG, 150-pound

SWP, complies with MSS SP-110.

2. Type V303 Ball Valve 2 Inches and Smaller for Equipment Air System

Shutoff:

a. Manufacturers and Products:

1) Conbraco Apollo; 75-100-41.

2) Or equal.

b. Physical Characteristics: Two-piece, NPT threaded ends, bronze body and end piece, hard chrome-plated solid bronze or brass ball, RTFE seats and packing, blowout-proof stem, adjustable packing gland. Zinc-coated steel locking handle with vinyl grip.

c. Functional Characteristics: Safety exhaust port to…