6699 SOW Well.docx

Well & Water Service Lines PVC Date: July 2024

STATEMENT OF WORK

1.01 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Furnish and install a water well as shown on the drawing.

1.02 SITE LOCATION

A. 421652 East 1030 Road, Checotah, OK 74426 B. Latitude: 35.5216798 (N) Longitude: -95.5070287 (W) C. Finding Directions: Between Rentiesville and Highway 69 on south side of 1030 Road. Gated entry way.

1.03 Construction Schedule

A. Contact the Project Oversight three business days before the start of any work.

B. Failure to perform work on the date scheduled shall require 24-hour notice for rescheduling the work.

C. Leave all work exposed until inspected and approved. Work not inspected before it is covered shall be re-exposed at the Contractor’s expense.

D. All work shall be performed Monday – Friday ONLY between the hours of 8:00 a.m. – 5:00 p.m. No work is to be performed on the weekends and/or federal holidays unless other work schedule arrangements are approved by the Project Oversight.

E. Project Oversight: Andrew Banta Office: (918) 586-8410 Cell: (918) 752-9191 Email: andrew.banta@ihs.gov

1.04 WARRANTY

A. Provide a minimum one-year warranty for all materials and labor, covering defects in the materials or workmanship.

1.05 WELLS

A. References (use latest versions)

1. ASTM D1785 Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, 120.

2. ASTM D2241 Standard Specification for Polyvinyl Chloride (PVC) Pressure-Rated Pipe.

3. ASTM D2609 Standard Specification for Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe.

4. ASTM D2737 Standard Specification for Polyethylene (PE) Plastic Tubing.

5. ATSM D3035 Standard Specification for Polyethylene (PE) Plastic Pipe Based on Controlled Outside Diameter.

6. AWWA C901 Polyethylene (PE) Pressure Pipe and Tubing, 1/2 in. Through 3 in. For Water Service.

7. NSF Standard 014 Plastics Piping System Components and Related Materials.

8. NSF Standard 061 Drinking Water System Components - Health Effects (Manufacturer Specific).

9. Oklahoma Water Resources Board (OWRB), Title 785, Chapter 35, Subchapter 7.

10. AWWA A100 and Appendices.

B. Drop Pipe Materials

1. PVC Pipe

a. 1-inch IPS.

b. Schedule 80 (320 psi rating).

2. Fittings:

a. Brass insert adapters, extra-long, with eyes for the polypropylene safety rope.

3. Polypropylene Safety Rope

a. 0.25-inch, 1000 lb. test polypropylene.

4. Check valve

5. 1”, stainless steel, Lead-free.

C. Casing Materials

1. SDR 21 PVC.

2. Diameter: 5” and 8”.

3. Recommended Manufacturers: CertainTeed Corporation, Northern Pipe Product Inc., and Silver Line.

D. PVC Screen

1. SDR rating the same of larger psi rating as the casing.

2. White PVC Type 1, Grade 1 material as described in ASTM F480 and ASTM D1784, Class 12454B.

3. Vee –Wire screen with a continuous slot widening inwardly to minimize clogging, or approved equal.

E. Filter Pack

1. Clean, well-rounded, 95% siliceous material, smooth and uniform, free of foreign material, properly size, washed and disinfected immediately prior to or during placement.

2. Weight loss by the acid test less than 20%.

3. Gradation specified by the well driller based on the gradation of the identified water bearing formation.

F. Pump Motor

1. Heavy-duty.

2. 2 or 3 wire.

3. 230 volt.

4. Single-phase.

5. 60 cycle.

6. 4-inch diameter maximum.

7. Stainless steel case.

8. Stainless steel splined or hexagonal motor shaft.

9. Built in check valve or check valve installed on pump discharge.

G. Pump impellers

1. Stainless steel or high quality thermoplastic.

2. Pumps and components shall meet EPA standards for lead content.

1.06 WELL INSTALLATION

A. Take all necessary and practical precautions to prevent contamination or polluting substances from entering the well through the opening or by seepage through ground surface.

B. Locate wells as shown on the plans or staked by IHS Project Oversight.

C. Drill well to depth specified, unless otherwise approved by IHS Project Oversight.

1. If satisfactory yield is obtained at a lesser depth, terminate drilling and develop at that depth.

D. Install well cap and well seal, as per ORWB requirements and to prevent contamination of the well.

E. Drop Pipe

1. Install drop pipe Install drop pipe so the submersible pump is at the depth approved by the IHS Project Oversight.

2. Tie wire to the drop pipe every 10 feet using submersible well tape.

3. Install torque arrestor directly above the submersible pump.

a. Install torque arrestors every 50 vertical feet thereafter.

4. Install check valve within 25 feet of the pump.

5. Install a brass rope eyed male adapter at pump.

F. Casing

1. Install surface casing to the depth indicated by the IHS project oversight.

2. Grout between the surface casing and the production casing to the depth indicated by the IHS project oversight.

3. Install permanent casing in well to a depth appropriate for the formation and minimum yield requirement.

a. Solvent weld all PVC casing joints.

G. Well Screen

1. Use solvent weld (or as allowed by the manufacturer) to attach the screen to the casing as the casing is installed.

H. Filter Pack

1. Place filter back by either the Tremie or the reverse-circulation methods in a manner that will not allow hydraulic separation.

2. Filter pack shall be placed from the bottom of the well to a point directed by IHS project oversight. At minimum, 20 feet above the upper most screen slow to a maximum of 10 feet below the surface.

I. Pump

1. Install pump per OWRB, or per manufacturer’s recommendations.

1.07 WELL DISINFECTION

A. References (use latest versions)

1. ANSI/AWWA C654-3 Disinfection of Wells.

2. AWWA A100: Section 4.9 Well Disinfection.

3. Oklahoma Water Resources Board: Title 785, Chapter 35, Subchapter 7.

B. After test pumping and construction is complete, thoroughly clean the well of all foreign material (i.e. cement, oil, grease, joint dope, scum, etc.).

C. Disinfect well with a liquid chlorine solution.

1. Prepare solution prior to injection into well. The solution shall be diluted with a minimum of a gallon of water. Injection of undiluted liquid bleach directly into the well shall not be allowed.

2. Mix volume and strength such that a minimum concentration of 100 ppm of free residual chlorine is obtained in all parts of the well for a minimum of 2 hours after injection.

3. Flush the well until no chlorine residual is observed.

D. Bacteriological Testing.

1. If the bacteriological test result is positive:

a. Prepare and apply to the entire depth of the well a total volume of the chlorine solution of at least 100 mg/l available chlorine.

b. Apply a volume equal to at least four times the volume of water in the well.

c. Allow solution to remain in well for 2 hours.

d. Flush and retest.

E. Bacteriological Analysis

1. The IHS Project Oversight shall take bacteriological samples immediately after flushing of each well.

2. The IHS Project Oversight to submit bacteriological samples to the Oklahoma Department of Environmental Quality, the State Department of Health, or a State of Oklahoma certified lab.

1.08 WELL HOUSE

A. References (use latest versions)

1. Title 785. Oklahoma Water Resources Board, Chapter 35, Subchapter 7, Minimum Standards for Construction of Wells.

2. AWWA A100 and Appendices.

B. Insulated Steel Well House

1. Size: 64” x 64”.

2. Recommended Manufacturer: Polar insulated shed of Oklahoma, or approved equal.

C. Hydro-pneumatic tank

1. Size: 34 gallons.

2. Recommended Manufacturer: Well-X-Trol, WX-205D, or approved equal.

D. Appurtenances

1. Bras hose bib

a. ¾” hose-thread.

2. Brass check valve

a. 1-inch.

3. Vent

a. Terminate 12” above land surface.

b. ½”, with side slits for venting.

c. WS-V05 Boshart, or approved equal.

4. Gate valve

a. Brass.

b. 1-inch.

c. Circular handle.

5. Pressure gage:

a. Brass.

b. ¼” NPT.

c. Maximum reading between 60 psi and 100 psi.

6. Pressure relief valve

a. Brass.

b. Set between 60 psi and 100 psi.

7. Heat tape

a. Self-regulating.

b. 10 to 65 degrees.

c. 120V, flexible cord.

d. 6 foot minimum length.

e. 70 nominal watt.

f. Briskheat, or approved equal.

1.09 WELL HOUSE INSTALLATION

A. Provide a concrete slab for each well.

1. Compact backfill around the casing to prevent settlement of the slab.

2. Install properly sized, rigid sleeves in the concrete for the water service and electrical service lines.

3. Seal around the well casing and sleeves with felt and tar or bitumastic to prevent seepage of water through the slab.

4. Slab shall be constructed to drain water away from the well.

5. Use 6 x 6-inch No. 10 welded wire mesh reinforcement.

B. Insulated Steel Well House

1. Attach well house to concrete, per manufacturer’s recommendation.

2. Seal Galvanized Well House to base with non-shrinking silicon caulking compound to assure water tightness.

3. Install/wrap heat tape on all above ground piping, per manufacturer’s recommendation.

4. Install the following per manufacturer’s recommendations

a. Hose bib.

b. Vent

c. Gate/isolation valve.

d. Pressure gage.

e. Pressure relief valve.

5. Hydro-pneumatic tank

a. Install per manufacturer’s recommendations.

1.010 WATER SERVICE LINES

A. References (use latest versions)

1. ASTM D698 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort.

2. ASTM D1785 Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, 120.

3. ASTM D2241 Standard Specification for Polyvinyl Chloride (PVC) Pressure-Rated Pipe.

4. ASTM D2774 Standard Practice for Underground Installation of Thermoplastic Pressure Piping.

5. AWWA C800 Underground Service Lines and Fittings.

6. International Plumbing Code, Section 610.

7. NSF Standard 014 Plastics Piping Systems Components and Related Materials.

8. NSF Standard 061 Drinking Water System Components – Health Effect.

9. Oklahoma Administrative Code, Title 785, Chapter 35.

B. PVC Pipe Material Requirements

1. Polyvinyl Chloride (PVC).

2. Schedule 40, or DR 11.

3. Diameter: 1-inch.

4. Recommended Manufacturer: J-M Manufacturing Co., Crestline Plastic Pipe Company or approved equal.

C. Fittings

1. Solvent welded.

D. Isolation Valve

1. Ball valve

a. Brass.

b. ¼ turn-handle type.

E. Valve Box

1. Polyethylene box and cover.

2. Minimum dimensions

a. Length: 21 inches.

b. Width: 16 inches.

c. Height: 12 inches.

3. Recommended Manufacturer: NDS or approved equal.

1.011 WATER SERVICE LINE INSTALLATION

A. Install water service lines and appurtenances in the locations, sizes and materials shown on the drawings or staked in the field.

B. Install isolation valve and valve box within 5-feet of home.

C. Water and sewer service crossing and parallel installation.

1. Maintain a 30-inch horizontal separation between water and sewer services.

2. Maintain a 12-inch vertical separation for crossing water and sewer services. The water service is to be placed above the sewer service whenever possible.

3. Water service line splices or joints will not be permitted within 10 feet of a sewer line crossing.

D. Thrust blocking is to be provided at all changes in direction.

E. All existing fencing shall be undisturbed by construction activities. Any fencing that is disturbed shall be replaced in kind or exceed existing conditions.

F. Gravel driveway shall be replaced in kind. Any gravel disturbed shall be replaced by Contractor.

1.012 TRENCH

A. Depth: Minimum 30 inches to the top of the pipe.

B. Bottom: Free from stones greater than 3 inch, large dirt clods, and any frozen material.

C. Backfill: restore trenches to initial grade.

1. Initial Backfill

a. Work material under and around the pipe to ensure full pipe support.

b. Hand tamp to prevent movement of the pipe during placement of material, avoiding contact between the pipe and compaction equipment.

c. Compact in lifts not to exceed 6 inches in loose measurement until 12 inches of backfill covers the top of the pipe.

2. Final Backfill

a. Compact in lifts not to exceed 12 inches in loose measurement with mechanical compacting equipment.

b. Compact all backfill to a density not less than the density of the surrounding undisturbed soil.

c. Surplus materials shall be disposed of in accordance with federal, state and local regulations.

d. Any excessive settlement, exceeding 3 inches, shall be corrected by the contractor.

D. Rock Excavation

1. Definition:

a. Solid rock: large masses or rock which cannot be excavated without hammering, ripping, or other specialized equipment.

b. Loose rock: boulders and/or detached stone having a volume of one cubic yard or more.

2. Execution:

a. Rock excavation may be accomplished by any or all of the following methods: excavation with earthmoving equipment specialized for rock removal, ripping with a bull dozer, or jack hammering.

b. Remove excavated rock from site unless otherwise directed by the Project Oversight.

1.013 TESTING

A. Before joints are covered, test pipe for leaks.

B. Visually inspect all connections and fittings for leaks in the presence of the Project Oversight.

C. Repair all leaks before backfilling.

1.014 CLOSEOUT ACTIVITIES

A. Restore the site as close as is practical to its original condition.

Author: Kala Yarnall Well & Water Service Lines PVC or PE