SOW WSL HDPE.pdf

Water Service Lines HDPE August 2022

Patty S. Thompson, P.E. Water Service Lines

STATEMENT OF WORK

1.01 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Furnish and install a water service line, well house, pressure tank and booster pump as shown on the drawing.

1.02 SITE LOCATION

A. 1265 CR 2255, Skiatook, OK 74074 (site located west of Town of Avant)

1.03 CONSTRUCTION SCHEDULE

A. Contact the Construction Inspector three business days before the start of any work.

B. Failure to perform work on the date scheduled will require 24-hour notice to reschedule the work.

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

1.04 QUALITY ASSURANCE

A. Perform work under the direction of personnel licensed in the state including, but not limited to plumbing.

1.05 WARRANTY

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

1.06 WATER SERVICE LINES

A. HDPE pipe, roll type, minimum pressure rating 160 psi at 73.4oF.

1. Fittings:

a. Compression or fusion type. SDR 11.

b. Compatible with;

1) AWWA C800

2) AWWA C901-08

1.07 INSTALLATION

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

B. Lay one continuous pipe from the connection at existing home to the booster pump and one continuous pipe from the booster pump to the new house. Splices are not allowed unless approved by the Project Engineer in advance.

1.08 TRENCH

A. Depth: Minimum 30 inches.

Water Service Lines HDPE August 2022

Patty S. Thompson, P.E. Water Service Lines

B. Bottom: Free from stones greater than 1-inch, large dirt clods, any frozen material.

C. Bedding: If the trench bottom is hardpan, rock, or has stones larger than 1-inch in diameter in the largest dimension:

a. Over excavate 6 inches.

b. Place 6 inches of mechanically compacted imported bedding

c. Place pipe in trench.

d. Place 6 inches of mechanically compacted river sand over the pipe.

D. Backfill: restore trenches to initial grade.

1.09 TESTING

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

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

Construction Inspector.

C. Repair all leaks before backfilling.

1.10 DISINFECTION

A. Disinfect in accordance with AWWA C651 before placing in service.

1. Sample and test until two (2) consecutive (minimum of 24 hours apart) negative Bac-T tests are obtained.

2. Provide a copy of the negative tests to the Project Engineer.

1.11 CLOSEOUT ACTIVITIES

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

B. Provide record drawings to the Project Engineer.

1.12 BOOSTER PUMP, PUMP HOUSE, AND PRESSURE TANK

A. Booster pump shall be ½ hp, 8 stages, 115/230V AC, outlet and inlet size ¾-in NPT, cast iron, maximum pressure 120 psi, maximum case pressure 300 psi, pressure switch, pressure gauge, gate valves, check valves, piping, main power box, fuse box or switch, and appurtenances.

B. Pump house shall be an insulated prefabbed 4’ X 4’ X 4’ house set on 4-inch concrete slab, with electric outlet for pump heater and light fixture with switch.

C. Pressure tank volume shall be 62 gallons with maximum pressure of 150 psi, precharged 38 psi, steel shell material, height 47”, and diameter 22”.