Attachment_A_Specifications.pdf

REHABILITATE RV DUMP STATIONS AT OLYMPIC NATIONAL PARK

PMIS 237531

Date: July 10, 2023

PART 1 – GENERAL

1.1 SUMMARY

A. The work described herein consists of rehabilitating Recreational Vehicle (RV) dump stations by replacing existing components and installing new components at four existing campground RV dump stations located at Fairholm Campground on Lake Crescent; Sol Duc Campground near Sol Duc Hot Springs Resort; Mora Campground near Rialto Beach; and Kalaloch Campground within the Kalaloch developed area.

B. Work at each site will include installing reduced pressure backflow assemblies with insulated enclosures on water lines at both RV dump rinse and potable water fill service connections;

replacing existing rinse and potable water fill towers with new towers and valving; protecting backflow assemblies and water towers with new bollards; replacing sanitary drain hatches with new lockable ductile iron sanitary hatches; replacing concrete dump pads so they are sloped to drain to sewer outlet at 2-5% slope; replacing or installing concrete curbing and islands to protect facilities and direct traffic flow; replacing or installing required signage; and patching/repairing asphalt or other existing surfaces damaged or impacted by construction repairs.

C. Option A: Demolish RV dump station components located within the Hoh Rain Forest Campground, including removal of all above-ground components (water towers, concrete curbing and pedestals, blower/aeration equipment, septic tank risers, signage); abandonment of 5000-gallon fiberglass septic tank in accordance with WAC 246-272A-0300 (remove septage, remove lids, fill tank cavity with native material or gravel); and cutting/capping all utilities including water, sewer, and power. The site shall be restored with a surface of compacted gravel to provide additional parking in this high visitor use area.

1.2 DEFINITION OF CONTRACT LINE ITEMS

A. General: For all line items, no separate measurement will be made. Distribute costs for mobilization, demobilization, project management, overhead, profit, bond, and other administrative costs across all line items, as appropriate. Payment will be at the contract unit (lump sum) price.

B. Contract Line Item No. 1 – Rehabilitate RV Dump Stations at Four Locations

1. This line item consists of furnishing all labor, materials, and equipment to provide complete, fully functional and operational rehabilitated RV dump station facilities at four locations within Olympic National Park. Specific elements include, but are not limited to, the following:

Olympic National Park

Project Specifications

a. Install 1” reduced pressure backflow assemblies with insulated enclosures on new HDPE water service lines at both RV dump rinse and potable water fill service connections.

b. Replace existing rinse and potable water fill towers with new towers, HDPE water service line, and valving.

c. Disinfect, flush and test new water system components.

d. Protect backflow assemblies and water towers with new 4” diameter Schedule 40 concrete-filled steel pipe bollards.

e. Replace 4” sanitary drain hatches with new lockable ductile iron hatch covers.

f. Replace concrete dump pads so they are sloped to drain to sewer outlet at 2-5% slope.

g. Replace or install required signage.

h. Replace or install concrete curbing and islands to protect facilities and direct traffic flow.

i. Patch/repair asphalt or other existing surfaces damaged or impacted by construction repairs.

C. Contract Option A – Demolish RV Dump Station Components

1. This line item consists of furnishing all labor, materials, and equipment to demolish RV dump station components located within the Hoh Rain Forest Campground, including removal of all above-ground components (water towers, concrete curbing and pedestals, blower/aeration equipment, septic tank risers, signage); abandonment of 5000-gallon fiberglass septic tank in accordance with WAC 246-272A-0300 (remove septage, remove lids, fill tank cavity with native material or gravel); and cutting/capping all utilities including water, sewer, and power. The site shall be restored with a surface of compacted gravel to provide additional parking in this high visitor use area.

1.3 CONTRACTOR USE OF SITES

A. General: Contractor shall have limited use of the sites for construction operations. Do not disturb portions of project site beyond areas in which the RV dump station work is indicated.

Minimize impacts to visitors.

1. Limits: Confine constructions operations to within the designated perimeter of the RV dump station facilities.

2. No unattended motor or engine operation is permitted. No idling of motors or engines for extended periods of time is permitted.

3. Utilities to support construction activities by contractor:

a. Water: Contractor may use water from existing facilities while working directly on the facilities. Acceptable uses are for activities associated with direct construction and testing of the project.

B. Construction Time Period: Timing of work shall be coordinated with the Contracting Officer and follow the approved Contractor’s work schedule. Onsite activity may begin after September 4, 2023 (Labor Day Holiday). Work conducted during the April 1 through September 23 marbled murrelet nesting season that produces above-ambient noise shall occur between two hours after sunrise and two hours before sunset. Work shall generally be performed between the hours of 7:00 AM and 5:30 PM, Monday through Friday and not on federal holidays, except as approved by the Contracting Officer.

C. Staging and Storage of Materials: Confine storage of equipment and materials to within the staging area as described and delineated on the construction drawings, or as designated by the Contracting Officer. Remove all materials, including trash and food wastes, from the project site to reduce the attraction of murrelet predators such as crows and jays. Project area shall be kept free of trash at all times.

D. Preservation of Natural Features:

1. Sources for all imported rock, sand, gravel, and soil shall be inspected for invasive non-native plants, weeds, and/or seeds. Material must not be stockpiled at the quarry for more than 1 week after washing. If material comes from older stockpiles, the quarry must be certified weed-free by the County Noxious Weed Coordinator or a qualified weed inspector designated by NPS. For details on obtaining pit inspections and topsoil specifications, contact the Contracting Officer and provide at least 14 days’ notice that an inspection is needed. Imported material shall be free of non-native weeds and/or seeds. Imported material shall be shipped directly from the source to the Park without intermediary storage or staging. Shipping vessels shall be covered, if necessary, to prevent spillage or blowing off their contents while in transit.

2. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

3. Provide temporary barriers to protect existing trees and plants and root zones.

4. Do not remove, injure, or destroy trees or other plants without prior approval.

5. Do not fasten ropes, cables, or guys to existing trees.

6. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

E. Park Regulations:

1. No Smoking Policy: Smoking is prohibited inside or outside within 25 feet of any buildings in the park. Discarding tobacco products or debris anywhere other than into designated tobacco receptacles is considered littering and subject to fines.

2. Equipment used at the site shall be pressure cleaned and free of weeds, seed, debris, and mud to prevent the introduction and/or spread of exotic, invasive plants. Coordinate inspection with Contracting Officer prior to brining equipment into the park.

3. Fueling & Spills: Fueling of any type, whether equipment or vehicles, must be done either on non-pervious surfaces such as concrete or asphalt, or deploy a spill containment pad. Hazardous spill clean-up materials shall be onsite at all times to avoid/minimize the introduction of chemical contaminants associated with machinery used in project implementation. Equipment must be free of any fluid leaks (fuel, oil, hydraulic fluid, etc.) upon arrival at the worksite and shall be inspected at the beginning of each shift for leaks prior to the commencement of work. Leaking equipment shall be removed off-site for necessary repairs before the commencement of work. The contractor shall be responsible for any cleanup efforts required by 40 CFR and all applicable state environmental quality laws regarding disposal and cleanup of hazardous/industrial wastes. The contractor must immediately notify the Contracting Officer of spills.

1.4 ARCHAEOLOGICAL PROTECTION

A. General: No archaeologically sensitive areas have been identified within the proposed project areas, and there is no surface evidence of archaeological resources.

B. If unknown archaeological resources are discovered during construction, stop work immediately and report the discovery to the Contracting Officer. Work in that location shall stop or be relocated to a non-sensitive area until NPS properly records and evaluates the resources; measures should be taken to avoid further resource impacts or to mitigate their loss or disturbance.

1.5 SUBMITTALS

A. General: Coordinate preparation and processing of submittals with the performance of construction activities. Review them for legibility, accuracy, completeness, and compliance with Contract Documents. Transmit each electronic submittal using the National Park Service CM-16 transmittal form. (This form can be downloaded from the Workflows website at http://www.nps.gov/dscw/con_subreview21.htm.) No action will be taken on a submittal item unless accompanied by the transmittal form.

B. Construction Schedule: The purpose of the Construction Schedule is to ensure adequate planning, coordination, scheduling, and reporting during the execution of work by the Contractor. The Construction Schedule will assist the Contractor and Contracting Officer in monitoring the progress of work, evaluating proposed changes, and processing progress payments, if necessary. After contract award and before the Pre-Construction conference, submit a baseline schedule, large enough to show entire schedule for entire construction period.

Include submittal review, construction start date, work activities, activity durations, major milestones, inspection dates, closeout activities, and project end date.

C. Schedule of Values: Break down each lump-sum item into component work activities used in the schedule, for which progress payments may be requested. The work activities broken out within the schedule of values shall be integrated into and made a logical part of the construction schedule. The total costs for the component work activities shall equal the contract price for that lump-sum item. The Contracting Officer may request data to verify the accuracy of dollar values. Include mobilization, general condition costs, overhead, and profit in the total dollar value of unit price items and the component work activities for each lump-sum item.

D. Accident Prevention Plan: After the contract award and before the Pre-Construction conference, submit for review an Accident Prevention Plan. The Contracting Officer will review the proposed Plan. If the plan requires any revisions or corrections, the Contractor shall resubmit the Plan within ten (10) days. No progress payments will be made until the Plan is accepted. The Plan shall be written to comply with OSHA and project requirements including but not limited to the following:

1. Name of the responsible supervisor to carry out the program.

2. Weekly and monthly safety meetings.

3. First aid procedures.

4. Outline of hazards associated with the work and methods proposed to provide for property protection and safety of the public, National Park Service personnel, and Contractor's employees.

5. Appropriate personal protective equipment to be worn on the job site.

6. Training, both initial and continuing.

7. Planning for possible emergencies, such as floods, fires, cave-ins, slides, explosions, power outages, and windstorms. Such planning shall take into consideration the nature of construction, site conditions, and the degree of exposure of persons and property.

http://www.nps.gov/dscw/con_subreview21.htm

E. Quality Control Plan: After the contract award and before the Pre-Construction conference, submit for approval a written Contractor Quality Control (CQC) Plan. If the plan requires any revisions or corrections, the Contractor shall resubmit the Plan within ten (10) days. The Government reserves the right to require changes in the plan during the contract period as necessary to obtain the quality specified. No change in the approved plan may be made without written concurrence by the Contracting Officer. The Quality Control Plan shall include:

1. A list of personnel responsible for quality control and assigned duties. Include each person's qualifications.

2. A copy of a letter of direction to the Contractor's Quality Control Supervisor outlining assigned duties. Note that Quality Control Supervisor duties may be in addition to other duties such as Site Superintendent, supervisor responsible for carrying out the Accident Prevention Plan, or similar.

3. Names, qualifications, and descriptions of laboratories to perform sampling and testing.

4. Methods of performing, documenting, and enforcing quality control of all work.

5. Format for Contractor’s Quality Control Daily Reports. Form should show all inspections and tests and shall be submitted to the Contracting Officer on the first workday following the date covered by the report (preferred), or at least weekly.

Contractor’s Quality Control Supervisor may utilize the NPS Denver Service Center’s fillable .pdf Contractor Quality Control (CQC) Daily Report form (https://www.nps.gov/dscw/upload/CMR-CQC-DailyReport_2-6-18_AF.pdf), or any Contracting Officer approved form containing similar content.

F. Product Data: Provide product submittals for the following items demonstrating conformance with these specifications for designer review and approval.

1. Backflow assemblies

2. Backflow assembly enclosures

3. Water towers and appurtenances

4. Water pipe

5. Sanitary drain hatch

6. Concrete mix design

7. Signage

8. Bollards

1.6 CLOSEOUT PROCEDURES

A. Project Record Drawings: Maintain one complete set of contract drawings and one full-size set of vendor-supplied drawings. Mark changes, deletions, and additions to show actual construction conditions. Show additions in red, deletions in green and special instructions in blue. Submit complete record drawings upon completion of the total project.

B. Operation & Maintenance Data: Submit operation and maintenance (O&M) data including preventative maintenance schedules, product cut sheets, specific warranties, and similar documents. O&M data shall be compiled and submitted electronically to the Contracting Officer.

C. Substantial Completion & Final Inspection: When the project is substantially complete, request in writing a final inspection. Upon receipt of the written request that the project is substantially complete, the Contracting Officer will proceed with inspection within ten (10) days of receipt of the request or will advise the Contractor of items that prevent the project from being https://www.nps.gov/dscw/upload/CMR-CQC-DailyReport_2-6-18_AF.pdf designated as substantially complete. If following final inspection, the work is determined to be substantially complete, the Contracting Officer will prepare a Punch List to be corrected before final acceptance and issue a Letter of Substantial Completion. The contractor shall complete the work described on the Punch List within thirty (30) calendar days, as weather permits. If the Contractor fails to complete the work within this time frame, the Contracting Officer may either replace or correct the work with an appropriate reduction in the contract price or charge for re-inspection costs following the Inspection of Construction clause of the contract. If, following final inspection, the work is not determined to be substantially complete;

Contracting Officer will notify the Contractor in writing. After completing work, the Contractor shall request a new final inspection. All re-inspection costs may be charged against the Contractor following the Inspection of Construction clause of the contract. After all deficiencies have been corrected, the CO will issue a Letter of Final Acceptance.

PART 2 - PRODUCTS

2.1 SPARE PARTS

A. Provide spare parts for the following water tower components:

1. Air vacuum breaker – 4 each

2. Extension spring assembly – 1 each

3. Internal hose assembly – 1 each

4. External hose assembly – 4 each

5. Nozzle assembly – 4 each

PART 3 - EXECUTION

NOT USED

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CAST-IN-PLACE CONCRETE

SECTION 03 30 00 – CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. The work of this Section consists of furnishing and performing all operations necessary for the placement of cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes for the following:

1.2 STANDARD SPECIFICATIONS

A. All work to be performed and materials to be used shall be in accordance with the current edition of the Standard Specifications for Road, Bridge, and Municipal Construction, and the current Standard Plans as published by the Washington State Department of Transportation (WSDOT), unless otherwise indicated herein.

B. Standard Specifications apply only to performance and materials and how they are to be incorporated into the work. Legal/contractual relationship sections and the measurement and payment sections do not apply to this document.

C. Performance Requirements:

1. Conform to requirements of ASTM C94 unless specified otherwise.

2. For testing purposes, the following concrete strengths are required:

a. At seven (7) days: Sixty (60) percent minimum of twenty-eight (28) day strengths.

b. At twenty-eight (28) days: Full strength per accepted mix design requirements.

1.3 QUALITY ASSURANCE

A. Batch Tickets: Provide Contracting Officer with batch tickets for each truckload of concrete used in the work, indicating project identification name and number, date, mix type, mix time, quantity, and amount of cement and water introduced.

1.4 REFERENCES

A. ACI 301-16: Specifications for Structural Concrete, American Concrete Institute.

B. ASTM D 1751-97, 'Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Non-extruding and Resilient Bituminous Types)'

C. ASTM A615 / A615M-15a, 'Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement'

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D. ASTM A934 / A934M - 13 Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars

1.5 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, project conditions, weather, test results, or other circumstances warrant adjustments.

1. Submit proposed mix designs at least 15 days in advance of placing operations for each type of concrete. The submitted mix designs shall include the following:

a. Proportions of all ingredients, including all admixtures added either at time of batching or at job site. Aggregate weights shall be based upon saturated surface dry conditions.

b. Water/cement ratio.

c. Slump (ASTM C 143): When high range water-reducing admixtures are used, slump before and after addition of admixture are required.

d. Air content of freshly mixed concrete (ASTM C 231).

e. Strength is measured at seven (7) and twenty-eight (28) days. Strengths shall be as tested using 4" x 8" cylinders in accordance with ASTM C 31 and ASTM C 39.

f. Certification that all ingredients in each mix design are compatible.

g. Locations or intended use of each mix design.

h. Source of all materials.

C. Steel Reinforcement Shop Drawings: Details of fabrication, bending, and placement according to ACI 315, ‘Details and Detailing of Concrete Reinforcement”.

1. Include material, grade, bar schedules, stirrup spacing, arrangement, and supports of concrete reinforcement.

2. Provide placement details for all specific reinforcing intersections and clearance conditions not shown by the typical details on the structural drawings.

3. Preparing drawings in sufficient detail to resolve all reinforcing intersections.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Reinforcing steel shall be free of heavy rust scales and flakes, or other coatings at the time of delivery and placing. Properly protect rebar on-site after delivery.

1.7 CONTRACTOR RESPONSIBILITY

A. Contractor is responsible for designing and engineering the formwork along with the associated bracing and shoring to withstand all imposed construction forces.

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B. Contractor is responsible for coordinating and controlling the installation and protection of all concrete work including selection of concrete design mix conforming to design criteria, control of water added on the site, placement of concrete, finishing methods, curing methods and dry-out to achieve a crack-free finish, vapor emission rate, and moisture content.

1.8 FIELD MESUREMENTS

A. Verify that field measurements and conditions are as shown on drawings, shop drawings, or as instructed by Product Manufacturer.

PART 2 - PRODUCTS

2.1 CONCRETE FORMS

A. Forms shall meet the requirements of WSDOT Section 8-14.3 (2) FORMS. Form material shall be compatible with specified form release agents and with finish requirements for concrete to be left exposed or to receive a decorative finish. All forms shall be free from warping and dents.

B. Form Release Agent: Colorless, non-staining, low or no VOC, will not adversely affect surface coatings.

C. Expansion/Contraction Joints

1. Asphalt Impregnated Fiber:

a. Manufactured commercial fiber type meeting requirements of ASTM D 1751 and one-half (1/2) inch thick.

b. Acceptable Products and Manufacturers:

1) Conflex by Masonite Building & Industrial Products Group, Chicago, IL

2) Sealtight by W R Meadows Inc, Elgin, IL

3) Equal as approved by Contracting Officer before installation.

2.2 REINFORCEMENT

A. Reinforcing Steel

1. Rebar shall have grade identification marks and conform to ASTM A 615.

a. Grade sixty (60) minimum.

b. Bars shall be deformed type.

c. Bars shall be free of heavy rust scales and flakes, or other bond-reducing coatings.

B. Welded Wire

1. Welded wire fabric shall conform to ASTM 185.

C. Reinforcement Accessories:

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1. Tie Wire: Annealed, minimum sixteen (16) gage.

2. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for adequate support of reinforcement during concrete placement.

2.3 CEMENT CONCRETE

A. All concrete shall be Class 4000 meeting the requirements of Section 6-02 of the WSDOT Standard Specifications.

PART 3 - EXECUTION

3.1 PREPARATION

A. The Contractor shall determine an appropriate means of staging and phasing for the construction such that construction does not interfere with visitor use of adjacent facilities including campgrounds, boat launches, trailhead parking, or similar.

B. Place, level, and compact six (6) inches minimum of granular base type gravel or crushed rock as shown on plans. Existing material may be re-used if adequate and approved for use by Contracting Officer.

3.2 FORMING

A. Forms shall be of wood or metal and shall extend for the full depth of the concrete. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

B. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces.

C. All forms shall be straight, free from warp, and of sufficient strength to resist the pressure of the concrete without springing. Bracing and staking of forms shall be such that the forms remain in both horizontal and vertical alignment until their removal.

D. Assemble forms so forms are sufficiently tight to prevent leakage.

E. Properly brace and tie forms.

F. After the forms have been set to line and grade, the foundation shall be brought to the grade required and thoroughly wetted approximately 12 hours before placing the concrete.

G. Chamfer exterior corners and edges of permanently exposed concrete per the plans.

H. Inspect all contact surfaces prior to concrete placement. Verify that surfaces are clean, smooth, and free from foreign matter or imperfections affecting the appearance of the finished concrete.

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I. Accessories: Provide for installation of inserts, templates, fastening devices, and other accessories to be set in concrete before placing. Position anchor bolds for hold-down anchors and columns and securely tie in place before placing concrete.

3.3 REINFORCING STEEL PLACEMENT

A. Bend bars cold according to the recommendations of Chapter 25, current ACI 318.

B. Accurately place and support with chairs, bar supports, spacers, or hangers as recommended by the current edition of CRSI ‘Reinforcing Steel – The Manual of Standard Practice’.

C. Conform to applicable code for concrete cover over reinforcement.

3.4 PLACING AND FINISHING THE CONCRETE

A. The foundation shall be watered thoroughly before the concrete is placed.

B. Do not add water to the concrete mix after acceptance testing has taken place.

C. The concrete shall be well tamped and spaded or vibrated in the forms. The concrete shall be placed in the forms and struck off with an approved straightedge to finished grade.

D. Slab and Flatwork: Provide broom finish as specified by ACI 301 unless noted otherwise in the plans or contract documents. Round edges, including edges formed by expansion joints. Remove edger marks.

E. Concrete Curb: Contractor shall sawcut, remove, and replace all curb impacted by construction in kind. New curb shall match existing.

3.5 CURING

A. Concrete shall be cured for at least 72 hours. Curing shall be by means of moist burlap or quilted blankets or other approved methods. During the curing period, all traffic, both pedestrian and vehicular, shall be excluded.

3.6 TESTING

A. The contractor is responsible for securing an independent testing agency that will perform field quality-control tests and inspection of concrete work. The testing agency shall be qualified according to ASTM C1077 and ASTM E329 to conduct the testing indicated.

B. Provide the testing agency with safe access to concrete operations at the project site and accommodate their requirements.

C. Inspector shall inspect/verify material type, grade, size, and configuration of reinforcing being placed.

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D. Inspector shall take three (3) concrete test cylinders for every fifty (50) or fewer cubic yards of each class of concrete placed.

1. Curing: Cure and test cylinders at an approved laboratory.

2. Test Timing: Test (1) of each three (3) at seven (7) days and the other two (2) at twenty-eight (28) days.

3. Test Criteria: All testing shall be per “Greenbook Standard Specifications, 2015 or current edition”, Section 201-1.1.5

3.7 PROTECTION AFTER INSTALLATION

A. Provide adequate coverings as necessary to protect installed materials from damage resulting from natural elements, traffic, and subsequent construction. Remove when no longer needed.

END OF SECTION 03 30 00

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RV DUMP STATION PLUMBING

SECTION 22 00 01 – RV DUMP STATION PLUMBING

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes general plumbing requirements for RV dump stations including domestic water piping, non-potable water piping, piping specialties, insulation, sleeves and seals, valves, backflow preventers, plumbing fixtures, testing and inspection, and flushing and disinfection.

1.2 DEFINITIONS

A. Lead-Free: Not containing more than 0.2% lead in solder and flux; and not more than a weighted average of 0.25% lead in wetted surfaces of pipes, pipe and plumbing fittings, and fixtures.

1.3 SUBMITTALS

A. Product Data: Submit manufacturer’s product information on all items to be used.

B. System Tests and Inspections: Submit documentation showing systems have satisfactorily passed all pressure tests and code inspections, including backflow assembly test results.

C. Cleaning and Disinfection: Submit documentation regarding completion of flushing, disinfection, and bacteriological tests demonstrating satisfactory results.

1.4 GENERAL REQURIEMENTS

A. Scope: Furnish all labor, materials, tools, equipment, and services for all mechanical work. All mechanical equipment and devices furnished or installed under this specification which require connection to any mechanical system shall be connected under this division of the Specifications.

B. Code: All work shall be done in accordance with all applicable codes and ordinances. Comply with code accessibility requirements.

C. Complete Systems: Furnish and install all materials, appurtenances, devices, and miscellaneous items not specifically mentioned herein or noted on the drawings, but which are necessary to make a complete working installation of all mechanical systems. Not all accessories or devices are shown or specified that are necessary to form complete and functional systems.

D. Offsets/Fittings: Include in bid all necessary fittings and offset to completely connect up all systems, maintain clear access paths, and comply with all project requirements. Offsets are required to route piping around structural elements, mechanical systems, and numerous other items. Due to the schematic nature of the plans such offsets are typically not shown. Contractor is responsible to determine the quantity of offsets and fittings required, and the labor involved.

No added payment or “extras” will be granted for the Contractor’s failure to correctly estimate the number of offsets and fittings and labor required.

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E. ANSI/NSF Compliance: All items in contact with potable water shall be lead free and in accordance with ANSI/NSF 61. Plastic piping system components shall comply with ANSI/NSF

14. Only lead-free solder shall be used.

F. Valves: Shall be dezincification resistant, and shall not contain more than 15% zinc in their chemical composition.

1.5 REFERENCES

A. ASME B16.15: Cast Bronze Threaded Fittings: Classes 125 and 250.

B. ASME B16.18: Cast Copper Alloy Solder Joint Pressure Fittings.

C. ASME B16.22: Wrought Copper and Copper Alloy Solder Joint Pressure Fittings.

D. ASME B16.24: Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 400, 600, 900, 1500, and 2500.

E. ASTM E84: Standard Test Method for Surface Burning Characteristics of Building Materials.

F. ASTM A312: Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.

G. ASTM A403: Wrought Austenitic Stainless Steel Piping Fittings.

H. ASTM A774: As-Welded Wrought Austenitic Stainless Steel Fittings for General Corrosive Service at Low and Moderate Temperatures.

I. ASTM A 778: Welded, Un-annealed Austenitic Stainless Steel Tubular Products.

J. ASTM B16.18: Seamless Copper Water Tube.

K. ASTM B32: Solder Metal.

L. AWS A5.8: Filler Metals for Brazing and Braze Welding.

M. AWWA B300: Hypochlorites.

N. AWWA B301: Liquid Chlorine.

O. AWWA M20: Water Chlorination and Chlorination Practices and Principles, 2nd edition.

P. ANSI/NSF Standard 61 Drinking Water System Components – Health Effects.

Q. ASME B 16.12: Cast Iron Threaded Drainage Fittings.

R. ASTM A 74: Cast Iron Soil Pipe and Fittings.

S. ASTM A 888: Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications.

T. ASTM C 564: Rubber Gaskets for Cast Iron Soil Pipe and Fittings.

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U. ASTM C 1277: Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Pipe and Fittings: Domestic Manufacturers only. Elkhart, CTS, Mueller, Cerro, Cambridge-Lee, US Steel, Anvil International, Wheatland Tube, Weldbend, Exltube, Charlotte Pipe, AB&I Foundry, Cresline-Northwest, or approved equal.

B. Valves: Conbraco/Apollo, Nibco, Stockham, Walworth, Milwaukee, Red-White, Watts, Hammond.

C. Backflow Preventers: Ames, Febco, Watts, Zurn/Wilkins.

D. Strainers: Same manufacturer as backflow preventer.

E. Backflow Prevention Assembly Enclosures: Hot Box, Lok Box, or approved equal.

F. Unions: Anvil, Nirco, Watts, EPCO, Ward.

G. Dielectric Connectors: Victaulic, Precision Plumbing Products, Elster Perfection.

H. Seals: 3M, GE, Dow Corning, Tremco, Pelcore, Sonneborn.

I. Pipe Insulation: Johns Mansville, Armacell, Owens-Corning, Knauf, Rubatex, Manson.

J. Water Tower: Trumbull Recreation or approved equal.

K. Sanitary Hatch: OPW 269 or approved equal.

L. Bollards: Vestil, other custom pipe, or approved equal.

M. Additional manufacturers are as listed for each individual item.

2.2 PIPE AND FITTINGS - MATERIALS

A. Soft Copper Tube: ASTM B 88, Type K, water tube, annealed temper.

1. Copper, Solder-Joint Fittings: ASME B16.18, cast-copper-alloy or ASME B16.22, wrought-copper, solder-joint pressure type. Furnish only wrought-copper fittings if indicated.

B. Hard Copper Tube: ASTM B 88, Type K, water tube, drawn temper.

1. Copper, Solder-Joint Fittings: ASME B16.18, cast-copper-alloy or ASME B16.22, wrought-copper, solder-joint pressure type. Furnish only wrought-copper fittings if indicated.

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C. PVC Pipe (under 4 inches) : ASTM D 1785 Schedule 80.

1. Fittings for PVC pipe under 4 inches shall meet the requirements of ASTM D2466.

D. Polyethylene (PE) Tubing: Polyethylene tubing ranging in size from ¾” through 2” shall meet the requirements of AWWA C901. Tubing shall be high molecular mass with a 160 psi rating at 74.3oF. Tubing shall be Standard Dimension Ratio (SDR) 11 and conform to the OD dimensions of copper tube size.

1. All molded fittings and fabricated fittings shall be fully pressure rated to match the pipe

SDR pressure rating to which they are made. All fittings shall be molded or fabricated by the manufacturer.

2.3 PIPE AND FITTINGS - APPLICATIONS

A. Domestic Water Piping - Above Ground: Type L or K copper with flanged, soldered, or press-fit joints or stainless steel.

B. Domestic Water Piping - Below Ground: Type K copper tubing with silver brazed joints.

C. Non-Potable Water Piping: Type L copper with solder or flanged joints.

D. Waste and Vent Piping: No Hub Cast Iron. Couplings on below ground piping shall be the heavy duty type.

2.4 PIPING SPECIALTIES

A. Strainers: Bronze body, “Y” type, screwed or solder type end connections, 125 lb class (rated 125 psi steam working pressure at 350 deg F minimum) and 400 psi (WOG) rated working pressures at 210 deg F, stainless steel 20 mesh wire screen, and gasketed retainer cap.

B. Unions

1. Dielectric Unions: Shall not be used. Provide “dielectric connector” with standard union where union is required at connection point of dissimilar materials.

2. Unions on Copper Pipe:

a. General: Pressure and temperature ratings to match (or exceed) piping system being installed in; minimum Class 125.

a. 2 ½ -Inch Pipe and Smaller: Wrought copper solder joint copper to copper union, complying with ASTM B16.18.

3. Dielectric Connector: Schedule 40 steel pipe nipple, zinc electroplated, with internal thermoplastic lining which is NSF/FDA listed and meeting all code requirements for potable water applications. Suitable for continuous use up to 225 deg F and 300 psi.

"Clearflow" dielectric waterway (or approved). For systems operating at temperatures greater than 225 deg F provide flanged connections with insulating gaskets.

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2.5 SLEEVES AND SEALS

A. Pipe Sleeves:

1. Diameter: Inside diameter of aboveground pipe sleeves shall be at least 1-inch larger than the outside diameter of the pipe or pipe covering (for covered piping systems), so as to allow free movement of piping.

2. Length: Horizontal sleeves through finished areas (where sleeve is exposed to view) shall be sized to be flush with finished surfaces; other horizontal sleeves may terminate flush to 2 inches past the element being penetrated. Vertical sleeves shall be sized to extend one inch above the final floor elevation.

3. Structural Type: Fabricated from schedule 40 steel pipe. Waterstop shall consist of fully welded 2-inch larger diameter collar, minimum 1/4 inch thick steel, located on sleeve so as to be centered within the element being penetrated. Provide waterstop on sleeves where sleeves are installed in the following locations: in cast-in-place concrete, where any part of the sleeve ends are exposed to water, where installed in floors with water-proofing or water stopping membranes, and where needed for anchoring/support purposes. Prime paint all surfaces with rust-inhibiting paint.

B. Non-Firestop Seals:

1. Indoor/Outdoor Sealants: Single component, non-sag, low modulus, silicone elastomeric sealant conforming to requirements of ASTM C920, Type S, Grade NS, Class 100/50.

Sealant shall be of the following types, or approved equal.

a. Dow Corning “790 Silicone Building Sealant”.

b. Pecora Corporation “890 Silicone”.

c. Tremco “Spectrem 1”.

2. Expanding Foam Sealant: Single component, polyurethane insulating sealant with flame spread index of 25 or less and smoke development rating of 50 or less. Shall expand and fully cure within 24 hours to a semi-rigid, closed cell, water and air resistant foam. Sealant shall be of the following types, or approved equal.

a. DAP “Kwik Foam”.

b. Fomo Products “Handi-Foam”.

c. Todol Products “EZ Flo Gun Foam”.

2.6 INSULATION

A. Code Compliance: Contractor shall insulate all systems with the materials and thicknesses as required by code, but in no case shall the insulation be less than that specified herein. In some cases the specified insulation exceeds code, and shall be provided as specified. Not all systems requiring insulation by code are specified, but shall be provided with insulation where required by code.

1. Elastomeric Insulation:

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a. Type: Flexible cellular elastomeric insulation, factory formed to match pipe sizes applied to, complying with ASTM C 534, Type 1. Armacell “AP/Armaflex SS” (or approved).

a. Thermal Conductivity: Shall not exceed 0.27 Btu-in/ hr-sq ft-deg F at 75 deg F.

b. Water Vapor Transmission: Water vapor permeance shall not exceed 0.08 perms.

c. Operating Temperatures: -200 deg F to 220 deg F; shall be able to withstand 250 deg F temperatures for 96 hours per ASTM C 411 without damage or deformation.

2.7 VALVES

A. Ball Valves:

1. 2 Inches and Smaller: 600 psi non-shock cold working pressure, 100 psi at 300 deg F, bronze body, full port, 2 piece construction, anti-blowout stem, reinforced PTFE seats, stainless steel or chrome plated brass or silicon bronze ball, lever handle, solder or threaded connections. Provide with extended lever handle where valve is installed in systems with insulation thickness greater than 0.5 inch. Nibco S-585-66-LF, T-585-66-LF, Nibco S-585- 80- LF, T-585-80-LF (or approved).

B. Check Valves:

1. 2 Inches and Smaller:

a. Horizontal: 125 psi-swp bronze body horizontal swing check valve, regarding type, y-pattern, renewable seat and disc, solder or threaded connection. Nibco S-413-LF or T-413-LF (or approved).

b. Vertical: 125 psi-swp bronze body vertical inline check valve, stainless steel or bronze disk holder, Buna-N disk, stainless steel spring actuated, solder or threaded connection. Nibco S-480-LF or T-480-LF (or approved).

C. Drain Valves: Bronze ball valve, minimum 125 psi-swp, anti-blowout stem, stainless steel or chrome plated brass ball, reinforced TFE seat, solder or threaded inlet connection, male 3/4 inch hose thread outlet connection, with brass cap and chain. Nibco S-585-70-HC, T-585-70-HC (or approved).

D. Resilient Wedge Gate Valves: AWWA C509; iron body, bronze or ductile iron.

1. Resilient seats.

2. Stem: Non-rising bronze stem.

3. Operating Nut: Square; open counterclockwise unless otherwise indicated.

4. Ends: Flanged, mechanic joint or bell end connections.

5. Coating: AWWA C550; interior/exterior.

6. Sizes 12-inch diameter and smaller: 160 psig.

2.8 BACKFLOW PREVENTERS

A. Reduced Pressure Type:

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1. General: Washington State approved, with air gap drain fitting and resilient seated full flow shutoff valves and test cocks. Same size as connecting pipe. Configuration to suit application. Conforming to AWWA C511.

2. 2 Inches and Smaller: Bronze body, stainless steel springs, bronze ball valves, 175 psi working pressure, threaded end connections.

3. Certified to NSF/ANSI/CAN 61, ASSE® Listed 1013, rated to 180oF, supplied with full port ball valves.

4. Approved by the Foundation for Cross Connection Control and Hydraulic Research at the

University of Southern California.

5. Main body and access covers shall be low lead bronze (ASTM B 584), seat ring and all internal polymers shall be NorylTM and seat disc elastomers shall be silicone.

6. First and second checks shall be accessible for maintenance without removing the relief valve or the entire device from the line.

7. Supplied with bronze “Y” type strainer and full port QT ball valves.

8. Discharge: Discharge from intermediate relief valve assembly shall not exceed 190 gpm for 2-inch and smaller backflow preventers.

2.9 BACKFLOW PREVENTION ASSEMBLY ENCLOSURES

A. General: sized/selected to accommodate all backflow assembly components.

1. Fiberglass enclosure, minimum 1/8” thick, with flip top

2. Lockable and securable to concrete pad with anchor hardware

3. Insulated with 1”-1.5” unicellular, non-wicking, polyisocyanate foam frothed or sprayed into place, minimum R-Value of 8

4. Designed to support minimum vertical load of 100 lb/sf and wind speeds up to 120 mph

5. Screened drain ports sized for full port backflow discharge

6. Properly sized to accommodate approved backflow preventer

7. ASSE 1060 Class II certified

2.10 PLUMBING FIXTURES

A. General Requirements

1. Fixture Quality: Provide new fixtures and fittings, approved, free from flaws and blemishes with finished surfaces clear, smooth and bright.

2. Code Compliance: All products and connections shall be in compliance with code, local Utilities Department standards, and Health Department requirements.

B. Water Towers (Potable and Non-Potable)

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1. Freezeproof assembly

2. Steel construction with welded steel base, steel components powder coated inside and out

3. Atmospheric vacuum breaker

4. Non-kink industrial swivel spring hose with 96” operational height and 12’ reach

5. Self-contained, with all non-user parts internalized

6. Color: green (rinse tower) and blue (potable tower)

7. Bury depth: 24”

8. Unit shall be self-draining and allow for concealed water connection

C. Sanitary Drain Hatch

1. Ductile iron body, cast zinc cap

2. Foot-operated

3. Non-recessed design

4. Lockable lid to prevent unauthorized dumping

PART 3 - EXECUTION

3.1 GENERAL

A. Workmanship: Installation of all items shall comply with code, best professional practices, manufacturers written installation instructions, and to allow for proper functioning of items being connected to.

B. Complete System: Provide all piping as indicated and as required to allow supply connections to each fixture and equipment item requiring water supply. Provide offsets as required to accommodate building construction and access requirements.

C. Coordination: Coordinate installation of items with all trades that are affected by the work to avoid conflicts.

D. Pipe Sleeves: Provide sleeves for all piping passing through foundations, footings, and similar elements. Except that sleeves are not required at core drilled penetrations through solid concrete or where formed openings equivalent to a core drilled opening are provided.

3.2 PIPE AND FITTINGS

A. Drawing Review: Consult drawings for location of existing infrastructure and report discrepancies or possible conflicts to Engineer before installing pipe.

B. Drainage: Slope all piping to low points to allow the system to be drained. Provide added drain valves where system cannot be drained through fixtures.

C. Preparation for Joining: Prior to the joining of any section of pipe to a pipe run, the section shall be thoroughly cleaned inside and out, the ends shall be reamed to remove any cutting burrs and piping prepared as recommended by piping and fitting manufacturer.

D. Threaded Connections: Cut piping carefully, ream, thread and work into place without springing.

Use TFE tape or lead and graphite lubricant (on male threads only).

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E. Soldered Connections: Polish contact surfaces of fittings and pipes with emery cloth before fluxing male and female surfaces of joints. Steel wool and sandpaper not permitted for polishing.

F. Unions: Install unions in pipe connections to valves, coils, and any other equipment where it may be necessary to disconnect the equipment or piping for repairs or maintenance; and as indicated.

Where flanged connections occur at equipment additional unions are not required unless indicated otherwise.

3.3 VALVES

A. Type: Ball type only.

B. Installation: Install valves so as to be easily accessible and oriented to permit ease of operation.

Valve stem shall be directed toward operator in either the vertical or horizontal direction.

C. Drain Valves: Provide drain valves at the base of all risers (except not required where risers can be drained through plumbing fixtures or equipment drains). Provide drain valves at piping low points where the piping cannot be drained through fixtures, hose bibs, or equipment drains.

3.4 ACCESSORIES

A. Backflow Preventers:

1. General: Provide backflow preventers as indicated in the Contract Documents and as required by code. Assembly shall be mounted at a minimum of 12” and a maximum of 30” above adequate drains with sufficient side clearance for testing and maintenance;

preference is for 18” clearance to bottom. Backflow preventers with threaded connections shall be installed with unions for ease of removal. Install to be accessible for testing and service, and so that no part of the unit can be submerged.

2. Certification: Arrange and pay for testing of backflow preventers by a certified backflow assembly tester (BAT) in accordance with applicable portions of the Washington Administrative Code, other applicable regulations as set forth by the Washington State Department of Health – Office of Drinking Water, and as required by the AHJ. Document test results on NPS Form BF-1 (also available upon request), or a comparable State-approved form provided by the BAT.

3. Submittal: Provide documentation of BAT current certification and satisfactory test results for each assembly to Contracting Officer’s Representative (COR).

3.5 INSTALLATION OF PLUMBING FIXTURES

A. General: All fixtures shall be completely connected to piping as needed to make a complete and operable installation.

B. Protection: Protect fixtures against use and damage until project substantial completion; provide guards and/or boxing to protect.

https://www.nps.gov/dscw/upload/BackflowPreventionAssembly_FormBF1.doc

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C. Cleaning: After completion of installation remove all labels and thoroughly clean all fixtures, trim and fittings.

3.6 TESTING AND INSPECTION

A. All piping shall be tested, inspected, and approved by the local authority having jurisdiction prior to being concealed or covered.

B. Testing shall be witnessed by the Contracting Officer’s Representative (COR) and/or the Engineer. Notify Contracting Officer and Engineer minimum 72 hours prior to date of testing, and mutually agreed upon times arranged.

C. Piping shall be hydrostatically tested for a period of 2 hours, during which time no drop in pressure or leakage shall occur.

D. Test pressure shall be not less than 150 percent of the maximum to which the pipe will ordinarily be subjected; but in no case less than 75 psig.

E. Any leaks or defective piping disclosed by testing and inspection shall be repaired with new materials and the system re-tested.

F. Provide documentation to the COR indicating that the system has been completely pressure tested, and test results are satisfactory.

3.7 FLUSHING AND DISINFECTION

A. System Flushing: After tests are completed, all water piping shall be flushed. In general, sufficient water shall be used to produce a minimum water velocity of 2.5 feet per second through piping being flushed. Flushing shall be continued until discharge water shows no discoloration. System shall be drained at low points. Strainer screens shall be removed, cleaned, and replaced in line.

System valves and fixtures shall be opened and re-closed to completely flush system. After flushing and cleaning, systems shall be prepared for disinfection service by immediately filling water piping with clean, fresh potable water. Any stoppage, discoloration, or other damage to the finish, furnishings, or parts of the building during this process shall be repaired by the Contractor.

B. Disinfection:

1. Upon completion of the job and prior to final acceptance, the Contractor shall disinfect the plumbing system with a water-chlorine solution. The chlorinating material shall provide a dosage of not less than 50 parts per million of chlorine and shall be introduced into the system in an approved manner. The treated water shall be retained in the pipe long enough to destroy all non-spore-forming bacteria.

2. The retention time shall be at least 24 hours and shall produce not less than 10 ppm of chlorine at the extreme end of the system at the end of the retention period. All valves in the system being sterilized shall be opened and closed several times during the contact period. The system shall then be flushed with clean water until the residual chlorine is reduced to less than 1.0 ppm. During the flushing period all valves and faucets shall be opened and closed several times.

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C. Bacteriological Tests: The Contractor shall take a test sample at a terminal point of the RV dump station…