B09-140P2025R0102-Amd_10_0010.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Vicki Freese-supler

See continuation page

NPS, DSC Contracting Services Div 1 Denver Federal Center, Building 50 P.O. Box 25287 Denver CO 80225-0287

PDS

140P2025R0102

01/21/2026

09/26/2025

1 2

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140P2025R0102/0010

YELL 310402 - Grant Wastewater Treatment Plant and Collections and Canyon Collections

The purpose of this amendment is to provide for the final responses to all questions and to provide updated Construction Specifications and

Construction Drawings as follows:

1. Construction Specification 09 96 35B -

Chemical Resistant Coatings

2. Construction Specification 44 42 19.04B -

Rotary Positive Displacement Blower

3. Construction Specification 44 42 56.16B -

Peristaltic Pump

4. Construction Specification 26 32 13.13

Diesel Engine Generator Set

5. Construction Drawing 458E134 Page 168 of

6. Construction Drawing 458E137, Page 171 of

7. Construction Drawing 458E302, Page 174 of

8. Construction Drawing 458E304, Page 176 of

9. Construction Drawing 458E610, Page 182-183 of 589

10. Construction Drawing 458E621, Page 192 of

11. Construction Drawing 458E632, Page 204 of

12. Construction Drawing 459N005, Page 217 of

13. Construction Drawing 490E101, Page 512 of

14. Construction Drawing 455C516, Page 105 of

15. Construction Specification 33 54 00 -

Supplement 1 - Grant Propane Tank Schedule

All other terms and conditions of the solicitation remain unchanged and in full force and effect. The proposal due date remains unchanged with all proposals being due on

January 29, 2026 at 2:00 p.m. Mountain Time.

PW\JA\NPS\D3167659\4\42 CHEMICAL-RESISTANT COATINGS

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SECTION 09 96 35

CHEMICAL-RESISTANT COATINGS

PART 1 GENERAL

1.01 REFERENCES

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

1. ASTM International (ASTM):

a. D4138, Standard Practices for Measurement of Dry Film

Thickness of Protective Coating Systems by Destructive, Cross-

Sectioning Means.

b. D4263, Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method.

c. F1869, Standard Test Method for Measuring Moisture Vapor

Emission Rate of Concrete Subfloor Using Anhydrous Calcium

Chloride.

d. F2170, Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using In Situ Probes.

2. International Concrete Restoration Institute (ICRI): Guideline 03732, Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymers.

3. The Society for Protective Coatings (SSPC):

a. PA Guide 10, Guide to Safety and Health Requirements for

Industrial Painting Projects.

b. SP 13/NACE 6, Surface Preparation of Concrete.

1.02 ABBREVIATIONS

A. CRC: Chemical-Resistant Coating.

B. MDFT: Minimum Dry Film Thickness.

C. Mil: One thousandth of an inch.

D. SDS: Safety Data Sheet.

E. SSPC SP: Surface Preparation Standard for Protective Coatings.

CHEMICAL-RESISTANT COATINGS PW\JA\NPS\D3167659\4\42

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1.03 SUBMITTALS

A. Action Submittals:

1. Shop Drawings:

a. Furnish a CRC System Data Sheet (CRCSDS) and a CRC Product

Data Sheet (CRCPDS) for each CRC system. The CRCSDS and

CRCPDS forms are appended to the end of this section.

b. Indiscriminate submittal of manufacturer’s literature only is not acceptable.

c. The following information shall be appended to each CRCSDS:

1) Manufacturer’s technical data sheets.

2) Manufacturer’s application specification.

3) Chemical-resistance test results for exposure to service conditions.

4) Configuration details for the following:

a) Expansion joints and structural isolation joints.

b) Construction joints.

c) Cracks.

d) Wall base details.

e) Gate frames.

f) Equipment bolts (when installed before or after CRC application).

g) Metal angle frames at trenches, gratings, or hatches.

h) Transition and termination detail at edge of CRC system.

i) Pipe penetrations (vertical and horizontal).

j) Top of wall termination.

k) Other details specific to the structure being coated.

B. Informational Submittals:

1. Letter from manufacturer stating that:

a. Applicator has notified manufacturer of proposed installation.

b. Manufacturer is in agreement with the intended application.

c. Applicator is qualified to do the Work and meets the quality assurance minimum experience requirements.

2. Applicator Qualifications:

a. List of references substantiating experience. Include projects with at least three years of successful service history, including project name and location, names of Owner and Engineer, and description of product used, substrates coated, and application procedures.

b. Certification from coating manufacturer showing current status as an approved applicator.

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3. Manufacturer’s Product Qualifications:

a. List of projects substantiating successful application and performance of the proposed products to the specific exposure and process conditions. Include project name and location, application dates, and names of Owner, Engineer, and Applicator.

4. Field inspection and test reports.

5. Safety Data Sheets (SDS).

1.04 QUALITY ASSURANCE

A. Manufacturer’s Experience: Minimum 5 years manufacturing proposed products.

B. Applicator’s Experience: Minimum 3 years applying proposed products.

C. Subcontractor is solely responsible for quality control inspection and testing.

Subcontractor shall monitor and be responsible for all environmental, surface preparation, application and quality control testing compliance at the locations where coating work is undertaken.

D. Applicator Quality Control Plan: Applicator shall maintain an in-house quality assurance program that monitors surface preparation, coating application, and quality control testing for coating and lining operations. Level of experience, quality assurance program, and quality control testing by the applicator shall meet the minimum requirements specified herein, the coating manufacturer’s instructions, and related government regulations.

E. Mockups:

1. Required for coating systems over 1,000 square feet in area or exposed to view in service.

2. Before proceeding with Work under this section, finish one complete space or item of each color scheme required showing selected colors, finish texture, materials, quality of work, and special details.

3. Provide one mockup for each CRC system.

4. Mockup components will vary, depending on the CRC system. All components of the CRC system, including surface preparation, must be exposed in the mockup.

5. Example Mockup Procedure:

a. Prepare, prime, and coat one section of concrete, 10 feet by

10 feet, at a location mutually agreed upon by the Subcontractor and the Contracting Officer. Use a “step” down mockup as follows:

1) Leave one-quarter of the surface exposed to allow observation of the surface preparation.

2) Apply resurfacing mortar three-quarters of remaining surface.

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3) Apply filler/surfacer and primer to one-half of the surface, over the resurfacing mortar, leaving one-quarter of the surface exposed with resurfacing mortar.

4) Apply finish coat to filler/surfacer with primer, leaving one-quarter of the surface exposed with surfacer/filler/primer.

b. Mockup shall include concrete cuts for coating terminations and one example of a penetration.

6. After Contracting Officer’s review and approval, sample spaces or items shall serve as a standard for similar work throughout the Project.

7. Leave mockup in place to serve as a reference and standard for the remaining work. At completion of Project, clean and prepare all surfaces that are not complete and finish coat the mockup area for incorporation into the Work.

1.05 PREINSTALLATION MEETING

A. Prior to beginning painting Work, schedule a meeting and be prepared to discuss the following subjects, as a minimum:

1. Required schedule.

2. Sequence of critical path work items.

3. Use of Site, access, office and storage areas, security, and temporary facilities.

4. Major product delivery and priorities.

5. Safety plan.

B. Attendees shall include:

1. Contracting Officer’s representatives.

2. Contractor’s office representative.

3. Contractor’s resident superintendent.

4. Contractor’s quality control representative.

5. Subcontractors’ representatives whom Contractor may desire or

Contracting Officer may request to attend.

6. Contracting Officer’s representative.

7. Paint manufacturer’s technical representative.

8. Others as appropriate.

1.06 REGULATORY REQUIREMENTS

A. Meet applicable federal, state, and local requirements for coating product selection, surface preparation and painting activities.

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1.07 SURFACE PREPARATION AND COATING APPLICATION

A. Perform surface preparation and painting in accordance with recommendations of the following:

1. These specifications.

2. Coating manufacturer’s instructions.

3. SSPC PA 10.

1.08 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials in manufacturer’s original, unopened containers.

B. Storage:

1. Maintain materials in clean and dry condition.

2. Maintain storage temperatures within the manufacturer’s requirements.

3. Follow manufacturer’s instructions.

C. Shelf Life: Do not apply coating materials that have exceeded the manufacturer’s recommended shelf life.

1.09 ENVIRONMENTAL REQUIREMENTS

A. Temporary Facilities: Provide temporary facilities that may be required for proper installation of the complete chemical resistant coating system, such as covers, enclosures, air heating or cooling, and dehumidification.

B. Temperature: Apply surfacing materials and protective coating only when substrate, ambient air, and coating material are within the manufacturer’s recommended range.

C. Substrate: Moisture content shall be within manufacturer’s recommended range for product application.

D. Ventilation: Provide during and after application to meet all applicable safety and health regulations.

1.10 SPECIAL GUARANTEE

A. Furnish extended guarantee or warranty. Special guarantee shall provide for correction, or at the option of Contracting Officer, removal and replacement of Work specified in this specification section found defective during a period of 2 years after date of Substantial Completion. Duties and obligations for

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correction or removal and replacement of defective Work as specified in

General Conditions.

1. 23-Month Warranty Period Inspection: Contracting Officer will conduct inspection of interior and exterior coated surfaces prior to the end of warranty period. Contracting Officer will notify Contractor in advance of inspection and Contractor may attend at its option. Contracting

Officer will prepare list of coating defects and failures identified during inspection and transmit to Contractor. List shall serve as notice of repairs required under warranty.

2. Repairs:

a. If repairs are required, requirements of Contract shall apply including, but not limited to, requirements to remove standing water and perform repair work.

b. Repair defective coatings using coating materials, equipment, and methods similar to those used in original work. Materials shall be of fresh manufacture and within manufacturer’s stated shelf life at time of application.

c. Provide extended warranty of 1 year for repairs. Complete repairs within 30 calendar days of Warranty Period Inspection.

PART 2 PRODUCTS

2.01 PAINT

A. Manufacturers:

1. CRC-4:

a. Raven.

b. Or equal.

B. Physical Characteristics:

1. Color: Color as Selected by Contracting Officer.

C. Functional: Minimum of 5 years of verifiable experience in manufacture of specified products.

D. Performance: Nationally recognized manufacturers of paints and protective coating who are regularly engaged in the production of such materials for essentially identical service conditions.

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2.02 MATERIALS

A. Chemical-Resistant Coatings:

1. A mixture of liquid resin-based material, setting agent, and filler designed to be troweled or sprayed into place to cure to a hard state.

2. As Described in Coating Systems. Provide manufacturer’s highest quality products suitable for the intended service.

B. Product Service Experience: Minimum 3 years of verifiable successful product performance in the listed exposure and process condition.

C. Only compatible materials from a single manufacturer shall be used within any system.

D. Meet federal, state, and local requirements limiting the emission of volatile organic compounds.

E. Materials shall not contain lead or lead compounds.

F. Joints:

1. Provide joint filler material of type, size, and composition as recommended by the CRC manufacturer for the particular joint condition.

2. Joint materials shall maintain a liquid tight joint for the life of the coating system.

3. Chemical resistance of the joint material shall be the same or better than the coating system.

4. Provide joint backing material per CRC manufacturer’s recommendation.

2.03 COATING SYSTEMS

A. CRC-4—Epoxy Polymer, Trowel or Spray Applied:

1. Description: Chemical resistant barrier lining suitable for application to new and existing underground concrete hydraulic structures.

2. Service Conditions: Immersion and head space exposure to primary wastewater subject to hydrogen sulfide and dilute sulfuric acid, pH of

1 to 3.

3. CRC Components:

a. Primer: One coat of manufacturer’s recommended moisture-resistant epoxy primer, 2 mils MDFT. As required by CRC manufacturer.

b. Surfacer/Filler: One coat of 100 percent solids, trowel applied epoxy surfacer, application rate as required to fill and level

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100 percent of the concrete surface in preparation for coating.

1/16-inch nominal thickness.

c. Corrosion Barrier Lining: One coat of trowel grade, 100 percent solids, chemical resistant amine-cured epoxy lining material, 125 MDFT.

d. Glaze Coat: Required for fiber-filled or aggregate-filled corrosion barrier lining products to provide a smooth surface. One coat of liquid applied, 100 percent solids, amine-cured chemical-resistant epoxy finish, 15 MDFT to 20 MDFT.

PART 3 EXECUTION

3.01 EXAMINATION

A. Surface Preparation:

1. Inspect and provide substrate surfaces prepared in accordance with these

Specifications and the printed directions and recommendations of the system manufacturer whose product is to be applied.

2. Provide Contracting Officer minimum 3 days’ advance notice of start of surface preparation and system application Work.

3. Perform Work only in presence of Contracting Officer, unless

Contracting Officer grants prior approval to perform Work in

Contracting Officer’s absence.

B. Schedule inspection with Contracting Officer in advance for cleaned surfaces and system application Work.

3.02 PREPARATION

A. In accordance with Section 09 90 00, Painting and Coating, and in accordance with the manufacturer’s written directions and recommendations.

B. Concrete Surfaces:

1. Do not begin surface preparation activities until 30 days after new concrete has been placed, or longer if required to meet coating manufacturer’s limit for moisture in the concrete.

2. Remove grease, oil, dirt, salts, chemicals, and other foreign matter by solvent, detergent, or other cleaning methods.

3. Prepare surfaces and provide a concrete profile by abrasive blasting, SSPC SP 13, or by high-pressure water blasting, 4,000 psi minimum.

Minimum surface profile shall meet ICRI CSP 3 to 5, or higher if required by coating manufacturer.

4. Secure coating manufacturer’s recommendations for additional preparation if required by the coating manufacturer.

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5. Ensure that concrete surfaces are sufficiently dry prior to coating.

a. Test for moisture using plastic sheets in accordance with

ASTM D4263.

b. If the test indicates moisture is present, conduct tests to determine moisture content in accordance with ASTM F1869. If the moisture content exceeds 3 pounds per 1,000 square feet in a

24-hour period, provide the manufacturer’s recommendations for mitigation of moisture effect on lining application and long term lining performance.

c. All tests using electronic moisture meters shall conform to

ASTM F2170.

C. Concrete Defects: Fill holes and cracks with manufacturer’s recommended materials. Secure the manufacturer’s recommendations for additional preparation if required for excessive bug holes exposed after blasting.

3.03 APPLICATION

A. General:

1. This specification section is intended for coating and lining concrete with special chemical resistant coatings. See Section 09 90 00, Painting and Coating, for ferrous metal painting requirements.

2. Surfacer/Filler: Apply surfacer/filler to concrete with methods recommended by the coating manufacturer as required to provide a surface that is continuous, smooth, void-free surface. Force material into voids and irregularities and remove excess filter before the material sets.

3. Spray or trowel apply coating system components in accordance with manufacturer’s written instructions.

4. Cove corners at vertical and horizontal intersections, and reinforce as specified in Paragraph Joints, in this section.

5. Lightly backroll finish coat as recommended by CRC manufacturer to eliminate pinholes.

6. Provide minimum number of coats required for each coating system, regardless of application method. Do not apply succeeding coats until previous coat has cured in accordance with coating manufacturer’s recommendations.

7. Observe manufacturer’s published recoat windows. If recoat window is exceeded, mechanically abrade before recoating in accordance with manufacturer’s directions and as approved by Contracting Officer.

B. Priming and Holiday Prevention on Concrete and Substrates: Follow manufacturer’s written instructions related to application during decreasing substrate temperature conditions, adequate surface preparation and other application techniques that may be necessary to reduce the potential for outgassing and formation of pinholes during coating application and cure. If

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required by the coating manufacturer, apply manufacturer’s recommended epoxy penetrating primer to minimize the effects of vapor transmission from the concrete.

C. Product Mixing:

1. Thoroughly mix until homogeneous following manufacturer’s instructions.

2. Mix only components furnished by coating manufacturer.

D. Film Thickness: Provide specified thickness of material. Use screeds or wet film gauges to monitor thickness during application.

E. Joints:

1. Provide continuous sealant, backing material, and joint-lining treatment recommended by the coating manufacturer at all expansion, isolation, and construction joints.

2. Provide continuous sealant bead at joints between different coating systems.

3. Provide fiberglass or synthetic fabric reinforcement at construction joints and large substrate cracks to maintain liquid-tight requirements under the specified service conditions.

F. Penetrations: Coat over or around equipment anchors, base plates, pipes, and similar items installed in areas receiving CRC to maintain continuous liquid tight seal.

G. Terminations:

1. Confirm to manufacturer’s details.

2. For coatings exposed to wastewater or vapor space above wastewater liquid levels, terminate leading edges in beveled saw cuts 1/4-inch-wide by 1/4-inch-deep, or as required by manufacturer. Prime and extend coating into the saw cut. Do not fill saw cut with epoxy surfacer. Saw cut shall be provided by CRC subcontractors.

3.04 UNSATISFACTORY APPLICATION

A. If an item has an improper appearance or insufficient film thickness, the surface shall be cleaned, prepared, and top-coated as required to achieve proper appearance and/or thickness. Provide specific procedures in writing from manufacturer prior to cleaning and preparation.

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3.05 DAMAGED COATINGS

A. Damaged coatings, pinholes, and holidays shall have the edges feathered and repaired in accordance with the recommendations of the manufacturer.

B. All finish coats, including touchup and damage-repair coats, shall be applied in a manner that will present a uniform texture and color-matched appearance.

C. All visible areas of chipped, peeled, or abraded coatings shall be hand or power sanded. Prime and finish coat these in accordance with these

Specifications and the manufacturer’s recommendations.

3.06 FIELD QUALITY CONTROL

A. Inspection: Inspect finished system for complete, uniform coverage of specified area. Evidence of defects include improper thickness, hardness, and appearance.

B. Holiday Testing:

1. All surfaces provided with a barrier lining shall be electrically checked with high-voltage holiday test equipment to determine location of discontinuities:

a. Provide suitable electrical contact to reinforcing steel. Verify conductivity of electrical contact by touching the second, ungrounded, electrode to another metallic ground connected to the concrete structure.

1) Do not perform electrical inspection until the barrier lining is sufficiently cured, as determined by the manufacturer.

b. All electrical inspection testing shall be performed in accordance with NACE SP0188.

c. Perform all electrical tests at 100 volts/mil for the minimum approved thickness of the lining material.

2. Repair all lining defects in accordance with the manufacturer’s written instructions.

3. After repaired and recoated areas have dried sufficiently, retest each.

C. Film Thickness:

1. Perform destructive dry film thickness measurements in accordance with ASTM D4138.

2. Perform one film thickness measurement per 500 square feet of lined surface.

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3. Perform additional testing if any one measurement does not meet specified thickness requirement.

a. Perform an additional four measurements in the area where inadequate thickness is found. No single measurement shall be less than specified dry film thickness.

4. Provide additional coats of barrier lining as required to meet specified film thickness. Abrade surface by brush blasting if manufacturer’s recommended recoat window is exceeded.

D. Repair all damaged coatings associated with film thickness testing in accordance with manufacturer’s written instructions.

3.07 MANUFACTURER’S SERVICES

A. Provide manufacturer’s representative at Site in accordance with

Section 01 67 00, Product Requirements, for installation assistance, inspection, and Manufacturer’s Certificate of Proper Installation.

B. Manufacturer’s representative shall visit the Project Site at the following intervals:

1. At preconstruction conference.

2. On first day of application of any system.

3. As necessary during surface preparation and application to ensure installations are made in accordance with the manufacturer’s recommendations.

4. As required to resolve field problems attributed to or associated with manufacturer’s product.

5. Minimum Number of Site Visits: Two site visits, each for a minimum of

6 hours. Travel time is not included as part of duration listed above.

3.08 APPLICATION SCHEDULE

A. Unless otherwise shown or specified, apply coatings in accordance with the following application schedule. In the event of discrepancies or omissions in the following, request clarification from Contracting Officer before starting

Work in question.

B. Coating System CRC-4:

1. Apply coating to the full height of walls and all overhead concrete of:

a. Headworks Channels.

b. Septage Equalization Tank.

c. Aerobic Digester 1 and 2.

d. Intraplant Pump Station Wetwell.

e. Bioreactor Splitter Wetwell.

e.f. Process Facility Lift Station

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3.09 SUPPLEMENTS

A. The supplements listed below, following “End of Section,” are part of this specification:

1. Chemical-Resistant Coating System Data Sheet (CRCSDS).

2. Chemical-Resistant Coating Product Data Sheet (CRCPDS).

END OF SECTION

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CHEMICAL-RESISTANT COATING SYSTEM DATA SHEET (CRCSDS)

Complete this CRCSDS for each coating system, include all components of the system

(surface preparation, primer, intermediate coats, and finish coats). Include all components of a given coating system on a single CRCSDS.

CRC Number (from Spec.):

CRC System Title (from Spec.):

Coating Manufacturer:

Representative:

Surface Preparation:

CRC Material

(Generic)

Product Name/Number

(Proprietary) Min. Coats, Coverage

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CHEMICAL-RESISTANT COATING PRODUCT DATA SHEET (CRCPDS)

Complete and attach manufacturer’s Technical Data Sheet to this CRCPDS for each product submitted. Provide manufacturer’s recommendations for the following parameters at temperature (F)/relative humidity.

PRODUCT:________________________________________________________________

Temperature/RH 50/50 70/30 90/25

Induction Time

Pot Life

Shelf Life

Drying Time

Curing Time

Min. Recoat Time

Max. Recoat Time

Provide manufacturer’s recommendations for the following:

Mixing Ratio:

Maximum Permissible Thinning:

Ambient Temperature Limitations: min.: max.:

Surface Temperature Limitations: min.: max.:

Surface Profile Requirements: min.: max.:

PW\JA\NPS\D3167659\4\42 ROTARY POSITIVE

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SECTION 44 42 19.04

ROTARY POSITIVE DISPLACEMENT BLOWER

PART 1 GENERAL

1.01 REFERENCES

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

1. American Gear Manufacturers Association (AGMA).

2. American National Standards Institute (ANSI).

3. ASTM International (ASTM):

a. A48/A48M, Standard Specification for Gray Iron Castings.

b. A395/A395M, Standard Specification for Ferritic Ductile Iron

Pressure-Retaining Castings for Use at Elevated Temperatures.

4. National Electrical Manufacturers Association (NEMA).

1.02 DEFINITIONS

A. Absolute Discharge Pressure: Pressure in pounds per square inch absolute

(psia) at the blower discharge.

B. Brake Horsepower (BHP): (Shaft) Standard curve horsepower required, corrected for pressure, temperature, and relative humidity at inlet conditions.

C. Discharge Pressure: Pressure in pounds per square inch gauge (psig) at blower discharge flange at rated capacity.

D. Inlet Cubic Feet per Minute (icfm): Volumetric rate of air at the inlet flange of the blower corrected to absolute pressure, temperature, and relative humidity.

The pressure takes into account the inlet piping and in filter pressure drops.

E. Pressure Rise: Pressure developed within the blower between the inlet and outlet flanges. It is the discharge pressure less the inlet pressure measured at the discharge and inlet flanges, respectively.

F. Standard Cubic Feet per Minute (scfm): Volumetric rate of air measured in standard cubic feet per minute at 68 degrees F, pressure of 14.2 psig, and relative humidity of 36 percent.

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44 42 19.04 SUPPLEMENT - 2 YELL 310402

1.03 SUBMITTALS

A. Action Submittals:

1. Shop Drawings:

a. Complete list of system components to be provided.

b. Make, model, weight, and horsepower of each equipment assembly.

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

d. Standard and specialized equipment assembly cuts.

e. System layout, installation, and placing drawings for equipment, drivers, and bases.

f. Performance data for each type of equipment that shall show compliance with specification requirements stated herein.

g. Horsepower demand over the operating range of the blower.

h. Detailed structural, mechanical, and electrical drawings showing the equipment fabrications and interface with other items. Include dimensions, size, and locations of connections to other work.

i. Motor: See requirements of Section 26 20 00, Low-Voltage AC

Induction Motors.

j. Monitoring System:

1) Catalog cuts of each blower control system component, including monitoring panel components.

2) Wiring diagrams, including baseplate-mounted terminal junction box and equipment monitoring panel.

3) Panel construction and face layout drawings.

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

Section 01 88 15, Anchorage and Bracing.

l. Sound Enclosure:

1) Complete description of sound enclosure and accessories.

2) Calculated noise attenuation.

2. Samples: Color samples for finish coating. If paint manufacturer of finish coat differs from manufacturer of prime coat, provide both manufacturers’ written confirmation that materials are compatible.

B. Informational Submittals:

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

2. Manufacturer’s Certificate of Compliance.

3. Factory calculated sound levels (dBA) of blower unit with silencers and sound enclosure.

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4. Identification of outside utility requirements for each component such as air, water, power, etc. Include operating parameters for required utilities.

5. Special shipping, storage and protection, and handling instructions.

6. Manufacturer’s written installation instructions.

7. List of special tools, materials, and supplies furnished with equipment for use prior to and during startup and for future maintenance.

8. Suggested spare parts list to maintain the equipment in service for a period of 5 years. Include a list of special tools required for checking, testing, parts replacement, and maintenance with current price information.

9. Routine maintenance requirements prior to plant startup.

10. Test Reports:

a. Factory test reports for blower and motor.

b. Field test procedures.

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

PART 2 PRODUCTS

2.01 GENERAL SUPPLY AND SCOPE

A. Blower system, featuring rotary positive displacement blower(s) to supply air for the aerobic digesters, bioreactors, septage equalization tank, and membranes.

B. Provide blower system, including, but not limited to, blowers, control panel, motors, drives, guards, drive couplings, baseplates, vibration isolators, supports, inlet silencers, discharge silencers, relief valves, flexible connectors, noise enclosures spare parts, cooling fans, outside air filter, and miscellaneous appurtenances as necessary.

C. Contractor shall coordinate all details of the equipment with other related parts of the Work. Contractor shall verify that all structures, piping, wiring, and equipment components are compatible. Contractor shall be responsible for all structural and other alterations required to accommodate equipment differing in dimensions or other characteristics from these Specifications and

Drawings.

2.02 MANUFACTURERS

A. Manufacturers:

1. Aerzen USA Corporation.

2. Or equal.

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B. Where possible, provide end products of one manufacturer in order to achieve standardization for appearance, operation, maintenance, replacement, and manufacturer’s service.

2.03 GENERAL SYSTEM CHARACTERISTICS

A. Physical Characteristics: None.

B. Functional Characteristics:

1. Blower(s) shall start no more than four times per hour when operating in intermittent service.

2. Blowers shall meet rated performance and sound level when operating at a maximum gear tip speed recommended by the manufacturer.

Operating speed shall not exceed 80 percent of rated speed.

C. Performance Characteristics:

1. Design equipment with due regard to safety of operation, accessibility, and durability of parts, and complying with applicable OSHA, state, and local safety regulations.

2. Intermittent and continuous operation in an indoor environment.

3. Maximum Sound Pressure Level: 85 dBA, factory calculated, with inlet and discharge silencers, measured with a sound enclosure.

4. Design Conditions:

Design Conditions

Description

Bioreactor

Blowers

Digester

Blowers

Septage

Blower

Air Scour

Blowers

Design Capacity, scfm 700 400 80 171

Minimum Capacity, scfm

101 61 13 63

Altitude, ft 7,850 7,850 7,850 7,850

Barometric pressure, psig

10.98 10.98 10.98 10.98

Inlet air temperature, degrees F (Guarantee

Point)

79 79 79 79

Inlet air temperature range, degrees F

9 min to

79 max

9 min to

79 max

9 min to

79 max

9 min to

79 max

Relative humidity, %

(Guarantee Point)

60 60 60 60

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Design Conditions

Description

Bioreactor

Blowers

Digester

Blowers

Septage

Blower

Air Scour

Blowers

Discharge pressure at compressor discharge flange, psig

8.25 7.5 4.4 6.9

Pressure relief valve setting, psig

Note 1 Note 1 Note 1 Note 1

Shaft brake horsepower, BHP1,2

50 30 5 20

1. Pressure relief valve set point to be determined by blower manufacturer

2.04 COMPONENTS

A. Blower:

1. General:

a. Physical Characteristics:

1) Casing: One-piece construction, ASTM A48/A48M, Class 30B close-grain cast iron strongly ribbed to prevent distortion at the specified operating conditions. Separate headplates of cast iron or aluminum.

b. Functional Characteristics: Rotary positive displacement type, belt driven by horizontal electric motor.

c. Performance Characteristics: None.

2. Bearings:

a. Physical Characteristics:

1) Drive End Bearings: Fixed to control axial location of impeller assembly.

b. Functional Characteristics:

1) Bearings: Grease or splash lubricated.

2) Gears: Splash oil lubricated.

3) Provide bearings with a positive lip type oil sealfrictionless piston ring seals designed to prevent lubricant from entering airstream and a labyrinth wearing seal on each shaft designed to reduce air leakage at point where shaft extends through headplate of blower casing.

4) Make further provision to vent area between the two sealing systems to atmosphere to relieve excessive pressure on seals.

c. Performance Characteristics: Support shaft and impeller assembly by double-row spherical roller bearings sized for a minimum L10 rating of 100,000 hours.

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3. Impellers:

a. Physical Characteristics:

1) Provide impeller/shaft assemblies integrally cast from high-strength ASTM A395/A395M Type 60-45-15 ductile iron with a minimum tensile strength of 60,000 pounds per square inch.

2) Mount impellers and timing gears on shafts supported by antifriction bearings, fixed to control the axial location of impeller/shaft in the casing.

3) Positively timed by a pair of accurately machined and carburized steel steel helical cut spur gears hardened to

58-62 Rockwell alloy timing gears manufactured to comply with AGMA. Gears mounted on shafts with tapered fit and secured by a locknutsfastened with a hydraulic interference fit.

4) Straight, tri-lobe involute type, rotating in opposite directions in a common casing without rubbing, liquid seals, or lubrication.

b. Functional Characteristics:

1) Positioned by timing gears to maintain proper clearances.

2) Statically and dynamically balanced by removing metal from impeller body.

c. Performance Characteristics: None.

4. Shafts:

a. Physical Characteristics:

1) Cast iron, integral with impellers.

2) Machine labyrinth seals into shaft to minimize air leakage.

b. Functional Characteristics: None.

c. Performance Characteristics: None.

5. Belt Drive:

a. Physical Characteristics: Provide belt guard with acoustical treatment.

b. Functional Characteristics: V-belt drive with automatic belt tension device.

c. Performance Characteristics:

1) Minimum service factor of 1.4.

2) Designed not to exceed allowable overhung load limits of blower and motor.

B. Motor:

1. Physical Characteristics:

a. Enclosure Type: TEFC as specified in Section 26 20 00, Low-

Voltage AC Induction Motors.

b. Drive: V-belt drive.

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2. Functional Characteristics:

a. Squirrel-cage ac induction type, meeting requirements of

Section 26 20 00, Low-Voltage AC Induction Motors, and as specified herein.

b. Variable speed rated motor.

c. Inverter duty rated.

3. Performance Characteristics:

a. Rated Voltage: 460-volt, three-phase, 60 Hz.

b. Motor Efficiency: Premium efficiency as specified in

Section 26 20 00, Low-Voltage AC Induction Motors.

c. Service Factor: 1.0.

C. Blower Support:

1. Physical Characteristics:

a. Baseplate: Cast iron or fabricated steel mounted on concrete equipment pad as shown on the Drawings.

b. Factory mount blower and motor as a package.

c. Provide vibration isolators to limit transmission of vibration to anchor points at floor.

2. Functional Characteristics:

a. Support Stand: Designed by manufacturer and reinforced to withstand anticipated loadings of blower, motor, inlet and discharge silencers, and associated piping.

3. Performance Characteristics: None.

2.05 ACCESSORIES

A. General:

1. Lifting Lugs: Provide suitably attached for equipment assemblies and components weighing over 100 pounds.

2. Equipment Identification Plates: Provide 16-gauge stainless steel identification plate securely mounted on each separate equipment component in a readily visible location. Plate shall bear 3/8-inch high engraved or die-stamped block type black enamel filled equipment identification number and letters indicated in this specification and as shown on the Drawings.

3. Anchor Bolts: Type 316 stainless steel sized by equipment manufacturer, 1/2-inch minimum diameter, and as specified in

Section 05 50 00, Metal Fabrications.

B. Blower Inlet Filter/Silencer:

1. Physical Characteristics:

a. Inlet filter silencer with rectangular opening shall be directly mounted to blower inlet flange.

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b. The inlet filter silencer shall be carbon steel with polyester filter elements with access to elements for typical maintenance.

c. Blower package shall include an inlet filter differential pressure gauge mounted on the noise enclosure to indicate filter change requirement. The inlet filter gauge shall be manufacturers standard.

2. Functional Characteristics:

a. Blower manufacturer shall supply each blower with one combination inlet filter and silencer within boundaries of blower enclosure or packaged skid.

b. Designed to reduce pulsation from rotary lobe blowers at blower operating timing gear speed.

3. Performance Characteristics: Filter shall provide 98 percent removal efficiency of 10-micron particle size and larger.

C. Base Frame/Discharge Silencer:

1. Physical Characteristics:

a. Blower manufacturer shall supply each blower with one combination base frame/discharge silencer.

b. The silencer shall have a machined flanged inlet connection and bolt directly to the discharge flange of the rotary lobe compressor, with no intermediary or interconnecting pieces.

c. The base frame shall be constructed from welded carbon steel that shall be designed to maintain alignment of the blower internal components and the drive during operation.

d. The manufacturer shall supply a stainless steel grounding lug fully welded to the base.

2. Functional Characteristics:

a. Discharge silencer shall be designed to reduce the noise emitted by the piping leaving the blower package to 85 dB (A), based on a carbon steel, Schedule 40 piping of a diameter equal to the blower package nominal connection size. Internal diffusers shall not be used.

b. The silencer pressure loss shall be accounted for in the power calculation.

c. The discharge silencer type shall be a combination of absorption, reflection and diffusion. The design of the discharge silencer shall incorporate a solid outer and perforated inner cylinder with absorptive material in between the cylinders. Fibrous materials or any absorption materials, which could deteriorate over time, shall not be used. A port shall be provided for inspection and cleaning.

d. The base frame shall be designed to resist distortion while being installed on vibration isolating mounts.

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3. Performance Characteristics:

a. Pressure Loss: 6 inches of WC maximum, through filter silencer at design flow rate.

D. Flexible Connectors:

1. Physical Characteristics:

a. Pressure spool, single arch, expansion joint type with 125-pound

ANSI flanges, sized to match blower flanges.

b. Install on each blower at inlet and outlet flange.

2. Functional Characteristics: Thrust restraint rods on discharge if not otherwise restrained.

3. Performance Characteristics:

a. Operating Temperature Rating: 350 degrees F.

E. Safety Relief Valve:

1. Physical Characteristics:

a. Spring type large nozzle design bronze relief valve.

b. Furnish one for each blower.

c. Provide nozzle on discharge silencer to mount relief valve as shown.

d. Mount on discharge piping as shown.

2. Functional Characteristics: None.

3. Performance Characteristics: Sized to relieve entire discharge flow without overloading blower.

F. Temperature Sensor:

1. Physical Characteristics:

a. Blower package shall include a discharge temperature gauge mounted on the noise enclosure. The discharge temperature gauge shall be manufacturers standard.

b. Provide HIGH discharge air temperature sensor, rated NEMA 4, for each blower.

c. Locate sensor directly after blower discharge.

2. Functional Characteristics: None.

3. Performance Characteristics: None.

G. Noise Enclosure:

1. Physical Characteristics:

a. Integral Enclosure Cooling Fan.: Factory supplied, 460V with integral motor starter.

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2. Functional Characteristics:

a. Integral Enclosure Cooling Fan: Integrate cooling fan operation with the factory blower controls to keep enclosure cooled and ventilated.

3. Performance Characteristics:

a. Total Noise Enclosure: 85 dBA average noise level at 1 meter.

2.06 INSTRUMENTATION AND CONTROLS

A. General:

1. Instrumentation and Controls: In accordance with Section 40 99 90, Package Control Systems. External signal interfaces are required to interface with facility’s SCADA. Provide items not specifically called out which are required to implement functions required for proper system operation.

B. Instruments:

1. Differential Pressure Switch:

a. Physical Characteristics: Each inlet filter shall be equipped with a differential pressure switch.

b. Functional Characteristics: In accordance with Section 40 99 90, Package Control Systems.

c. Performance Characteristics: In accordance with Section 40 99 90, Package Control Systems.

2. Pressure Gauge:

a. Physical Characteristics: In accordance with Section 40 99 90, Package Control Systems.

b. Functional Characteristics: Each blower shall have a pressure gauge with a 0 psig to 30 psig scale.

c. Performance Characteristics: In accordance with Section 40 99 90, Package Control Systems.

3. Temperature Switch:

a. Physical Characteristics: Each blower shall have a high discharge temperature switch and thermometer.

b. Functional Characteristics: In accordance with Section 40 99 90, Package Control Systems.

c. Performance Characteristics: In accordance with Section 40 99 90, Package Control Systems.

4. Pressure Switch Low:

a. Physical Characteristics: Each blower shall be equipped with a pressure switch low.

b. Functional Characteristics: In accordance with Section 40 99 90, Package Control Systems.

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c. Performance Characteristics: In accordance with Section 40 99 90, Package Control Systems.

5. Pressure indicator and transmitter:

a. Physical Characteristics: Each blower shall be equipped with a pressure indicator and transmitter.

b. Functional Characteristics: In accordance with Section 40 99 90, Package Control Systems.

c. Performance Characteristics: In accordance with Section 40 99 90, Package Control Systems.

2.07 EXTRA MATERIALS

A. Furnish, tag, and box for shipment and storage the following spare parts, special tools, and materials:

Item Quantity

Oil, synthetic Manufacturer recommended quantity for first oil change interval

Inlet Filters Enough for one complete change per unit

Flexible Coupling One complete set per unit

Drive V-Belts One complete set per unit

Inlet Filter/Silencer One complete set per unit

Special tools required to maintain or dismantle

One complete set for each unit

2.08 SOURCE QUALITY CONTROL

A. All welding in the factory shall use shielded arc, inert gas, MIG or TIG method. Add filler wire to all welds to provide for a cross-section equal to or greater than the parent metal. Fully penetrate butt welds to the interior surface and provide gas shielding to interior and exterior of the joint.

B. All surfaces that are specified to be machined shall be designed and fabricated to provide a runout of not more than 0.005 inch and a concentricity to within

0.005 inch.

C. All major system components shall be factory tested for compliance with the requirements herein, and a certification of the results of these tests shall be submitted to the Contracting Officer.

D. Balancing: Rotating elements of equipment, except small, commercially packaged equipment, shall be statically and dynamically balanced at the

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factory prior to final assembly. The supplier shall furnish certified copies of all test results.

E. Motor Test: See Section 26 20 00, Low-Voltage AC Induction Motors.

PART 3 EXECUTION

3.01 INSTALLATION

A. In accordance with manufacturer’s written instructions.

B. Install one check valve in the blower discharge piping, downstream of the silencer and safety relief valve.

C. Anchor Bolts: Accurately place using templates furnished by manufacturer and as specified in Section 05 50 00, Metal Fabrications.

D. Install blower package on vibration isolators and anchor bolts in strict accordance with manufacturer’s written instructions.

3.02 FIELD QUALITY CONTROL

A. In accordance with Section 01 91 15, Process Equipment Testing and Facility

Startup.

B. Functional Test: Prior to facility startup, conduct on each Blower System assisted by manufacturer’s representative, for correct rotation, proper alignment and connection, quiet operation, and satisfactory specified performance.

C. Blower Performance Test:

1. Notify Contracting Officer at least 7 days prior to performing test.

2. Perform on the blower actually furnished in accordance with manufacturer’s established criteria.

3. Test each blower for a minimum of 1 hour after stabilization at conditions near the performance ratings for mechanical integrity and flow performance.

a. Perform at or above specified performance pressure rise.

b. Tolerance on Flow: Plus or minus 4 percent, after correction to rated conditions.

4. Perform Slip Test in accordance with manufacturer’s established criteria.

a. Describe the testing configuration.

b. Document operating conditions, temperatures, pressures, blower speed, etc.

c. Complete slip calculations at test conditions.

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5. Measure power consumption using a calibrated wattmeter.

6. Test Report: Confirm capacity and power, complete with data and calculations used in the test.

3.03 MANUFACTURER’S SERVICES

A. Manufacturer’s Representative:

1. Present at Site or classroom designated by Contracting Officer for minimum person-days listed below, travel time excluded:

a. 1 person-day for installation assistance and inspection.

b. 1 person-day for functional testing and completion of

Manufacturer’s Certificate of Proper Installation.

c. 1/2 person-day for post-startup training of Contracting Officer’s personnel.

B. See Section 01 91 15, Process Equipment Testing and Facility Startup.

3.04 SUPPLEMENTS

A. The supplements listed below, following “End of Section,” are a part of this specification:

1. Bioreactor Blowers 1 and 2 Induction Motor Data Sheet.

2. Digester Blowers 1, 2, and 3 Induction Motor Data Sheet.

3. Septage Blower Induction Motor Data Sheet.

4. Air Scour Blowers 1, 2,…