B01 Attachment J01 SOW WLX.pdf

Page 1 of 5 Statement of Work

STATEMENT OF WORK

PROJECT OK 23-W92

CADDO COUNTY RURAL WATER DISTRICT # 3 WATER LINE EXTENSION

CADDO COUNTY, OKLAHOMA

INTRODUCTION

SUMMARY OF WORK TO BE PERFORMED

A. Construct a water line extension for Caddo County Rural Water District No. 3.

1. Furnish and install 10,940 feet of 2-inch DR 11 HDPE water main and 870 feet of 4-inch DR11 HDPE as casing.

2. Directional Bore 815 feet total including 2 road crossings, 1 driveway crossing, and 1 creek crossing.

3. 2 open cut gravel road crossings totaling 55 feet.

4. Case the water main or maintain a 5-foot horizontal and 2-foot vertical separation requirement from all gas lines.

5. Alternate bid items 12-15: Furnish and install 4 water main taps, water meters, and water service lines to homes. This includes 400 feet of 1-inch PE and 870 feet of 1.5-inch PE and appurtenances.

6. Furnish and install appurtenances including all gate valves, flush hydrants, air relief valves, tracer wire, locate stations, anode bays, thrust blocks, and fittings.

7. Complete pressure testing and provide results to the project engineer.

8. Satisfactorily complete disinfection and bacteriological testing of completed water main. Provide results to the project engineer. 2 consecutive negative tests 24hrs apart. Re-sampling of positive tests is to be performed at contractor expense.

9. Connect installed water line extension to Caddo County Rural Water District No.

3.

LOCATION & CONTACT INFORMATION

A. Location:

Caddo County Rural Water District No.3 existing main at the corner of CS 2620 and CR 1170, installation will be north along CS 2620 to 15139 CS 2620 and east on CR 1160 from CS 2620 to 18131 CR 1160.

Binger, Oklahoma

B. Contact Information:

1. Caddo County Rural Water District No. 3

Will be provided at time of award

Stephenson – Taylor Water Line Extension

Page 2 of 5 Statement of Work

2. Project Engineer

EXISTING SYSTEM

LOCATION

A. The existing water main is located approximately 1 and ½ miles northeast of Binger in

Caddo County, Oklahoma. The location of the proposed water line extension is shown in Figure 1 below.

Figure 1. The location of the proposed water line extension.

EXISTING WATER MAIN

A. The proposed water line extension will be connected to the existing Caddo County Rural

Water District No.3 3” water main which is located in the southeast corner of the intersection of County Street 2620 and County Road 1170.

WORK TO BE COMPLETED

GENERAL

A. Contractor shall inform project engineer and Rural Water District at least 3 days prior to beginning construction.

Will be provided at time of award mailto:Dylan.Lantis@ihs.gov

Page 3 of 5 Statement of Work

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

D. All work is to follow attached specifications.

E. All work is to adhere to applicable regulations and standards listed in the attached specifications.

F. All work performed and material installed is to be covered by a one-year warranty.

G. Any rock removed is to be transported and disposed of by the contractor.

H. All work is subject to inspection by project officer or their representative.

I. All work is to follow Occupational Safety and Health Administration and other specified regulations.

J. Items that require approval from project officer shall be submitted for approval before beginning work.

1. Submittals can be sent via email, fax, or hard copy.

2. Project officer shall approve, deny, or request further information from contractor within 3 weeks of submittal receipt.

K. Contractor shall provide project warranties of specified durations at project close out.

L. Contractor shall connect to existing 3-inch PVC water main at the existing valve.

M. Gravel driveways are to be crossed per plan set utilizing open cut method and/or boring and restored to original condition.

N. Contractor shall install flushing valves at ends of water main extension.

O. Contractor shall disinfect water main as indicated in specifications and collect bac-T samples until 2 consecutive negative samples taken at least 24 hours apart are achieved.

1. Re-sampling of positive tests is to be performed at contractor expense.

INDIVIDUAL WATER METERS

A. Rural Water District must be notified and on-site when tapping installed water main for water service line and installing meter boxes.

QUALITY ASSURANCE

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

B. Perform hydrostatic testing according to Section 33 05 05.3100.

C. Perform disinfection of the installed water main according to Section 33 11 13.0001.

WARRANTY

Page 4 of 5 Statement of Work

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

WATER LINES (SIZES: 1-INCH THROUGH 4-INCH DIAMETER IPS PE PIPE)

B. References (use latest versions)

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

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

3. ASTM D2774 Standard Practice for Underground Installation of Thermoplastic

Pressure Piping.

4. AWWA C651 Disinfecting Water Lines

5. AWWA C901 Polyethylene (PE) Pressure Pipe and Tubing, ½ in. Through 3 in.

for Water Service.

6. NSF Standard 014 Plastic Piping System Components and Related Materials.

7. NSF Standard 061 Drinking Water System Components – Health Effects.

C. PE Pipe Material Requirements

1. Ultra-high molecular weight polyethylene pipe

2. PE 3408

3. DR 11 (pressure rating 160 psi) or DR 9 (pressure rating 200 psi)

D. Fittings:

1. Non-flare compression type fittings with stainless steel pipe stiffeners at each joint.

INSTALLATION

A. Depth: Minimum 30 inches.

B. Bottom: Free from stones greater than 3/4 inch, large dirt clods, and any frozen material.

C. Bedding: If the trench bottom is hardpan, rock, or has stones larger than 3/4 inch in diameter in the largest dimension:

1. Over excavate 6 inches.

2. Place 6 inches of mechanically compacted imported bedding (maximum particle size 3/4 inch) under the pipe.

3. Place pipe in trench.

4. Place 6 inches of mechanically compacted imported bedding (maximum particle size 3/4 inch) on the sides and above the pipe.

D. Backfill: restore trenches to initial grade.

TESTING

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

Page 5 of 5 Statement of Work

B. Perform hydrostatic testing according to Section 33 05 05.3100 C. Visually inspect all connections and fittings for leaks in the presence of the Construction

Inspector.

D. Repair all leaks before backfilling.

DISINFECTION

A. Perform disinfection of installed the water main according to Section 33 11 13.0001.

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

1. Sample and test until 2 consecutive negative Bac-T tests are obtained.

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

CLOSEOUT ACTIVITIES

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

B. Provide record drawings to the Project Engineer.