Attachment 3 - Specification 02512.pdf

Portland Area Indian Health Service Revised 01/2022

Individual Household Water Systems 02512 - 1

SECTION 02512 – INDIVIDUAL HOUSEHOLD WATER SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. This section includes the installation of submersible pumps, drop pipe, electrical wiring, pressure tanks, water service lines, constant pressure systems, and pitless units from the well to the household or yard hydrant.

1.2 REFERENCES

A. ASTM A 53 – Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless

B. ASTM D 1785 – Polyvinyl Chloride (PVC) Plastic Pipe, Schedules 40, 80, and 120

C. AWWA C901 – Polyethylene (PE) Pressure Pipe and Tubing, 1/2 Inch Through 3- Inch, for Water Service

D. NSF/ANSI 14 – Plastics Piping System Components and Related Materials

E. NSF/ANSI 42 – Water Filtration System Components

F. NSF/ANSI 53 – Adsorption Filtration System Components

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

H. National Electric Code (NEC)

1.3 SUBMITTALS

A. Submersible Pumps and Warranty

B. Motor Protector

C. Pressure Tank and Warranty

D. Filtration Equipment and Warranty

PART 2 - PRODUCTS

2.1 SUBMERSIBLE PUMP

A. Pump requirements:

1. Goulds 4-inch Submersible Well Pump; or,

2. Grundfos 4-inch Submersible Well Pump

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2.2 WELL PUMP PROTECTOR

A. SynCom Model 231-Insider Single Phase PumpSaver or equal.

2.3 SUBMERSIBLE PUMP CABLE

A. Heavy duty rubber, Type USE cable equal to Paige Electric.

B. Crimp connectors equal to Sta-Kon.

C. Waterproof electrical tape equal to Scotch Brand No. 33 or 88.

2.4 DROP PIPE AND FITTINGS

A. All water service line piping and appurtenances must meet the requirements of NSF/ANSI-61 and NSF/ANSI-14.

B. PVC Drop Pipe.

1. Conform to ASTM D1785.

2. Threaded Schedule 80 with nominal size of 1-inch or 1 ¼ inch, as indicated in the bid schedule.

3. Connection couplings equal to American Granby DPC100 or DPC125.

4. Torque arrestor equal to American Granby No. TA48

C. PE Drop Pipe.

1. Conform to AWWA C901.

2. SDR 7, IPS with nominal size of 1-inch or 1 ¼ inch, as indicated in the bid schedule.

3. Torque arrestor equal to Merrill No. STA-48C.

4. Cable protector centering device equal to Merrill No. CG-46.

5. Stainless steel screw type clamps equal to Ideal Clamp Lox-On.

6. 3/8 inch diameter polypropylene safety rope.

D. Stainless Steel check valve equal to Merrill CVS.

E. Teflon thread sealant for potable water equal to Permatex.

2.5 WATER SERVICE LINE

A. Polyethylene Pipe

1. AWWA C901 and ASTM D2239.

2. IPS size pipe: SDR 7 with 200 psi pressure rating.

3. High density, ultrahigh molecular weight polyethylene pipe compound PE-3408.

4. Non-flare fittings: Compression type equal to Ford Pack Joint, C66-44 or C66-

55, or McDonald MAC-PAK with rigid stainless steel stiffeners.

5. Pipe equal to Cresline HD 200.

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2.6 PIPE HANGERS

A. Composed of material compatible with piping.

B. Sufficient strength to support the pipe at full capacity.

C. Not affect pipe integrity by abrading, cutting or bending of pipe.

2.7 PRESSURE TANK

A. Equal to Well-X-Trol Model WX-255 with a 5-year warranty precharged for a 40-60 psi operating level.

B. Pressure switch equal to Square D Class 9013 Type FSG2 pressure switch adjusted for 40 – 60 psi operating range

C. Reflective bubble insulation equal to Ply-foil.

D. Plumbing Tree:

1. Elevated tank cross equal to Simmons 740SB.

2. ¼ turn brass lever ball valve equal to Watts LFB-6000.

3. Metal sample faucet with smooth bore hole or a hose bibb with vacuum breaker.

Minimum diameter ¼ inch.

4. Pressure switch.

5. Pressure relief valve.

6. Pressure gauge equal to American Granby EILPG1002-4L.

7. Dielectric union.

2.8 PH NEUTRALIZING SYSTEM WITH 13” X 54” TANK AND AUTOMATIC CONTROL

VALVE

A. NSF 43/52 Certified

B. 13” x 54” Media Tank

C. 2.5 cu. ft of Calcite

D. Garnet sand under bedding

E. W51 automatic control valve

2.9 IRON AND SULFER FILTER WITH AUTOMATIC CONTROL VALVE AND CHEMICAL

FEED

A. NSF 43/52 Certified

B. 10” x 54” Media Tank

C. 1.3 cu. ft of Greensand media

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D. WR Auto control valve with Potassium Permanganate feeder

E. 10 gallon Potassium Permanganate solution tank

1. Positive displacement pump

2. 3/8” OD chemical feed tubing

2.10 POLISHING CARTRIDGE FILTER

A. 10” Big Blue housing

2.11 UNDERGROUND WIRING

A. Underground wiring equal to Paige Electric Type UF with ground wire for direct burial.

B. Sized to limit the total voltage drop from the electrical service to the pump motor to 2 percent or less.

C. Rigid conduit, Schedule 80 PVC.

2.12 WELL CAP

A. Equal to Monitor 6WPSM.

PART 3 - EXECUTION

3.1 WELL CAP

A. Install well cap tightly to top of well casing to provide sanitary seal.

B. Seal any unscreened openings until conduits are connected.

3.2 DROP PIPE

A. PVC Drop Pipe.

1. Sufficient length so that the submersible pump is well below the drawdown level of the well for the pump capacity and a minimum of 5 feet above the well screen.

2. Use approved thread sealant on all threaded connections.

3. Schedule 80 PVC depth limitation is 400 feet.

B. PE Drop Pipe.

1. Install in one single length (no couplings) from the pitless unit to the submersible pump.

2. Connect pipe to the pump and the pitless unit with stainless steel, extra long rope insert adapters with integral eye for 3/8 inch diameter polypropylene safety rope.

3. Connect pipe to the insert adapters with two stainless steel screw type clamps on each adapter.

4. Install polypropylene safety rope, visible above the spool.

5. Install torque arrestor at the pump.

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6. Install cable protector devices every 50 feet above the pump to center the PE pipe in the casing.

7. PE pipe depth limitation is 300 feet, maximum pump size is 1 horsepower.

C. If required by the Owner, install flow control valve between the pitless spool and the drop pipe.

3.3 SUBMERSIBLE CABLE

A. Securely attach submersible pump cable to the drop pipe every 10 feet using tape.

B. Provide an extra 12 inches of cable under the well cap.

C. Waterproof splices made using correctly sized crimp wire connectors and heat shrinkable sleeves.

D. Test all cables for leakage or shorts using an ohmmeter and correct if not within the tolerance recommended by the manufacturer.

E. Limit the overall voltage drop from the electrical service to the pump motor to 2 percent

3.4 WATER SERVICE LINE AND APPURTENANCES

A. Install water service line of the size and material indicated on the Bid Schedule.

B. Install at the locations shown on the plans.

C. Provide sufficient slack in the water service line to prevent pulling joints apart and to allow for contraction due to temperature changes.

D. Install service line:

1. From the main to a location into or near home.

a. Connect to the home’s existing water stub out if provided outside the home.

b. If sleeve provided, run water line through the sleeve and leave a minimum of

12-inches of piping in the home. Seal space between piping and sleeve to prevent groundwater from entering the home.

c. If no stub-out is provided, cap service line and mark with steel post.

d. For connecting beneath the home, install pipe hangers at a maximum spacing of 6 feet apart for all horizontal copper tubing and 2 feet apart for all horizontal PE pipe inside the home.

2. Bury line consistent with water main depth. Insulate where installed above recommended frost line.

3. Install warning tape 2 feet below finished grade

4. Use compression couplings for all connections.

5. Use stainless steel insert stiffeners for compression connections to PE pipe.

6. No splices or joints are allowed from the point of connection to the main to a point 10 feet beyond any sewer line crossing.

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3.5 BURIED CABLE

A. Install all wiring and underground cable (including a copper ground wire connected to the motor) in accordance with local utility regulations, the NEC, applicable state and local codes.

B. No underground splices are allowed.

C. Install in the same trench and at the same depth as the waterline.

D. Control power to each unit with a new fused disconnect switch or manually reset circuit breakers placed in the home, where possible, or otherwise on a power pole near the well.

1. Install lightning arrestor in accordance with manufacturer’s recommendations.

E. Connect underground wiring to the pump cable under the well cap using wire connectors.

1. Provide an extra 12 inches of slack cable under the well cap.

2. Tape connections using waterproof electrical tape.

3. The connections shall be accessible without having to unseat the spool

F. Securely attach the ground wire to the casing with a threaded metal screw tapped into or drilled through the casing

G. Ground the submersible pump and well casing to the panel in accordance with the NEC

H. Extend rigid conduit from the well cap to a point 2 feet below grade.

I. Enclose wiring within the home in rigid or flexible conduit, except wiring running in the floor joists.

1. Neatly cut conduit entrances into the home, seal or caulk when complete.

J. Provide sufficient slack in the wire in the trench to prevent separation of the cable by settlement of the trench.

K. For mobile homes and houses without basements, install underground wire in rigid conduit when placed below the structure.

3.6 PRESSURE TANK AND FITTINGS

A. Place tanks as shown on the plans.

B. No fittings made of galvanized iron, nylon, plastic, or containing lead are allowed.

C. Install tanks as shown on the attached drawings, including pressure gauge (0 – 100 psi), pressure switch, brass elevated tank cross, sample faucet, ¾ inch bronze ball valve and all miscellaneous brass fittings and adapters.

1. Install sample faucet a minimum of 12-inches above finished floor elevation.

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D. Use leveling blocks or hangers when installing tanks

E. Connect tank to existing plumbing, if available. In home plumbing installed to the point of connection to existing plumbing shall be done with copper tubing.

F. Install tank so that it can be connected to house plumbing.

G. For tanks with a steel inlet fitting use a dielectric union, installed between the inlet pipe and the brass cross.

H. Install tank and cross such that the tank can be easily removed.

I. Install ½ inch brass pressure relief valve.

J. Wrap the bottom two feet of the pressure tank with reflective bubble insulation.

3.7 BACTERIOLOGICAL TESTING

A. Provide negative bacteriological sample report for water system after system has been installed and flushed, prior to placement in service.

B. No payment will be made for water system until the negative bacteriological sample report has been received.

3.8 POST INSTALLATION PERFORMANCE VERIFICATION TESTING

A. Collect water samples (below) during the latter portion of the filter test and submit them to an EPA certified laboratory. Record date, time and temperature of each sample. Conform to all lab-sampling requirements.

Arsenic Nitrate (as NaNO3)

Calcium Chloride Corrosivity (Langelier Index)

Fluoride Hardness (Total) Hardness (Carbonate)

Iron Manganese pH

Total Dissolved Solids Total coliform bacteria E. coli bacteria

B. Contractor will furnish sample containers.

3.9 AS-BUILTS

A. Provide as-built information for all completed facilities

B. Provide Owner with the pump setting depth.

END OF SECTION