SOW Lift Station and SSL - EsignAFB.pdf

Individual Lift Station and Force Sewer Service Line Date: August 2022

Author: Andrew Banta Sewer Service Lines PE

STATEMENT OF WORK

1.01 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Furnish and install gravity sewer service line, an individual grinder pump lift station, buried electrical cabling, conduit, and connections, force sewer service line, and connection to community sewage system as shown on the drawings.

1.02 SITE LOCATION

A. 1203 East 11th Street, Okmulgee, OK 74447

B. Latitude: 35.6185218 Longitude: -95.9569464

C. Finding Directions: From intersection of HWY 75 and 10th Street, turn east on 10th and go 2 blocks to Miami Avenue. Turn south on Miami and go 1 block to 11th Street. Turn east and go to first house on NSOR. A-frame home next to church.

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 to do otherwise.

E. IHS Project Oversight: Andrew Banta, P.E., District Engineer

Office: (918) 586-8410

Email: andrew.banta@ihs.gov

1.04 SUBMITTALS

A. Product Data

1. Grinder Pump.

2. Fiberglass Lift Station Basin.

3. PVC Pipe.

1.05 QUALITY ASSURANCE

A. Perform work under the direction of personnel licensed in the state of Oklahoma and City of Okmulgee for plumbing.

B. Contractor shall meet all City construction and contracting requirements and obtain all permitting from the City of Okmulgee prior to installation.

1.06 WARRANTY

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

1.07 GRAVITY SEWER SERVICE LINES

A. References (use latest versions)

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

2. ASTM D2466 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40

B. PVC Pipe Material Requirements

1. ASTM D2241.

2. Nominal diameter: 4-inch.

3. Pressure rating: SCH40 (Class 200).

4. Twenty foot pipe lengths.

5. Solvent weld bell and spigot joints.

6. Recommended Manufacturer: Silver-Line Plastics Schedule 40.

C. Fittings:

1. Solvent welded SCH40.

1.08 PRESSURIZED SEWER SERVICE LINES

A. References (use latest versions)

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

2. ASTM D2466 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40

B. PVC Pipe Material Requirements

1. ASTM D2241.

2. Nominal diameter: 2-inch.

3. Pressure rating: SCH40 (Class 200).

4. Twenty foot pipe lengths.

5. Solvent weld bell and spigot joints.

6. Recommended Manufacturer: Silver-Line Plastics Schedule 40.

C. Fittings:

1. Solvent welded SCH40.

1.09 INDIVIUDAL GRINDER PUMP LIFT STATION

A. Individual Grinder Pump Lift Station Requirements

1. Minimum 70 gallon fiberglass basin.

2. Minimum basin dimensions: 28-inch diameter and 52-inch depth.

3. 20-inch diameter access cover.

4. Simplex one-horsepower grinder pump.

a. 120-volt, 60 Hz single phase motor.

5. Shall be equipped with high water alarm, tethered float system.

a. Alarm shall be both audial and visual.

6. Influent inlet shall be 4-inch with a rubber grommet seal.

7. Discharge outlet shall be 2-inch.

8. Minimum 20-foot power cord.

9. Shall include backflow prevention structure (i.e. check valve) that prevents back siphonage of wastewater into basin.

10. Recommended Manufacturer: Septic Solutions Inc. 70 Gallon Pump Station with

1.0 HP Residential Grinder Pump (Little Giant Model 16G-F151-20).

1.10 INSTALLATION

A. Verify that all products supplied are in new condition and are without defect.

1. Defective, damaged, used, or unsound materials shall be rejected by IHS Project

Oversight and removed from site.

B. Locate all existing public utilities via OKIE 811 system. Avoid damage to public and private utilities.

1. Note that there is a high pressure gas line present that will require extreme caution and coordination with service provider.

C. Install basin level and to manufacturer’s specifications and/or recommendations.

D. Install risers (if necessary) and terminate access cover 2-inches above existing grade.

E. Install buried electrical cable to homeowner-provided dedicated breaker service. Install conduit above grade to connection to electrical panel/breaker box.

1. Contractor is responsible for making electrical connections to breaker service and lift station.

F. Install sewer service lines and appurtenances in the locations, sizes and materials shown on the drawings.

1. Minimum slope for gravity flow sewer service lines is 1/8-inch per foot (1%).

2. Fittings are incidental to the sanitary sewer piping and shall not be paid separately.

G. Install cleanouts at the location specified in the drawings.

1. Install two-way cleanouts such that the service can be rodded or snaked in either direction.

2. Install sanitary tee in the sanitary sewerage piping and connect riser pipe from the fitting to 12 inches above the ground surface.

3. Solvent seal the cleanout out plug to the end of the riser pipe.

H. Water and sewer service crossing and parallel installation.

1. Maintain a 48-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.

I. Install new service connection (tap) on the sewer main.

1. Connect to existing sanitary sewerage piping with PVC wyes, restrained saddles, or other approved fittings.

2. Connection fittings are incidental to the sanitary sewer connection (tap) and shall not be paid separately.

3. Existing sewer main is approximately 3-1/2 feet deep.

J. Backfill trench in accordance with Section 1.12 Trenching. Take caution not to displace or damage piping during backfill.

1.11 TRENCH

A. Depth: Minimum 12 inches to the top of the pipe for gravity flow lines and 30 inches for force lines.

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

C. Backfill:

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. Mound the trench 3 -6 inches above existing grade to provide for settling.

d. Surplus materials shall be disposed of as directed by the Project Oversight.

e. 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 with a dozer, or other specialized equipment, including specialized rock teeth.

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 in accordance with city, state, and federal regulations unless the property owner has requested to keep on property.

1.12 TESTING

A. Obtain all permits and inspections from the City as required.

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

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

Oversight.

D. Repair all leaks before backfilling.

E. Test system operation to ensure functionality of installed facilities.

1.13 CLOSEOUT ACTIVITIES

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

Date8_af_date: 1/15/26