SOW_Lift Station and SSL_KMY EDITS.docx

Individual Lift Station and Force Sewer Service Line Date: April 2024

STATEMENT OF WORK

1.01 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

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

1.02 SITE LOCATION

A. 1908 East 10th Street, Okmulgee, OK 74447 B. Latitude: 35.618777286 (N) Longitude: -95.940413466 (W) C. Finding Directions: From HWY 62 in Okmulgee turn north on Mission Avenue. Continue north for 0.6 miles and East on E 10th St. Home on SSOR. 1908 E 10th St.

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.

1.04 SUBMITTALS

A. Product Data

1. Grinder Pump.

2. Lift Station Basin.

3. PVC Pipe.

4. PE Pipe.

1.05 QUALITY ASSURANCE

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

B. Contractor must be registered with the City of Okmulgee, carry a $10,000.00 surety bond, and obtain plumbing/construction permit from City of Okmulgee.

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. 4-inch nominal diameter.

3. Pressure rating: SCH40 (Class 200).

4. Twenty foot pipe lengths.

5. Solvent weld bell and spigot joints.

6. Recommended Manufacturer: Silver-Line Plastics or approved equal.

C. Fittings:

1. 4-inch nominal diameter.

2. Solvent sealed joints.

3. Shall not exceed 45⁰ bends.

4. Recommended Manufacturer: Charlotte Pipe and Foundry Co. or approved equal.

D. Two-Way Cleanouts:

1. 4-inch nominal diameter.

2. Compatible with sanitary sewerage piping material.

3. Sanitary tee.

4. PVC riser pipe with female adapter cap with square-nut threaded plug.

1.08 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. Simplex one-horsepower grinder pump.

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

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

a. Alarm shall be both audial and visual.

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

6. Discharge outlet shall be 2-inch.

7. 25-foot power cord.

8. Shall include backflow prevention structure that prevents back siphonage of wastewater into pump.

9. Recommended Manufacturer: Septic Solutions Inc. 70 Gallon Pump Station with 1.0 HP Residential Grinder Pump (Liberty Pumps ProVore PRG101A-2).

a. Consult with City of Okmulgee for further specifications and/or requirements.

1.09 FORCE SEWER SERVICE LINES

A. 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.

B. PE Pipe Material Requirements

1. Ultra-high molecular weight polyethylene pipe.

2. PE 4710 IPS SDR 9 (pressure rating 250 psi).

3. Nominal diameter: 2-inch

4. 500-foot coil.

5. Recommended Manufacturer: Silver-Line Plastics Sil-O-Flex IPS SIDR DR 9 or approved equal.

C. Fittings:

1. Non-flare compression type fittings with stainless steel pipe stiffeners at each joint, heat (butt) fused, or electro-fused fittings will be accepted.

1.010 ENCASEMENT PIPING

A. PE Pipe Material Requirements

1. Ultra-high molecular weight polyethylene pipe.

2. PE 4710 IPS SDR 9 (pressure rating 250 psi).

3. Nominal Diameter: 3-inch

4. 500-ft coil.

5. Recommended Manufacturer: Silver-Line Plastics Sil-O-Flex IPS SIDR DR 9 or approved equal.

B. Fittings:

1. Non-flare compression type fittings with stainless steel pipe stiffeners at each joint, heat (butt) fused, or electro-fused fittings will be accepted.

C. Tracer Wire

1. #12 AWG, solid-core, insulated copper wire.

1.011 INSTALLATION

A. Contractor shall coordinate with the City of Okmulgee and pay all necessary permit, inspection, and/or all other applicable fees associated with the work.

B. Work shall comply with City of Okmulgee Ordinances, Title 13, Chapter 13.16 – Sewer Permits and Connection Charges 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 from lift station to homeowner-provided dedicated breaker service. Connect electrical wiring to control panel and breaker service.

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 cleanout 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 minimum 2 inches above existing grade.

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 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.

I. Pressurized sewer service line shall be encased inside 3-inch HDPE casing for the entirety of the alignment, per City requirement. Casing shall be installed by open cut method.

1. Install casing piping.

2. Install skids to ensure carrier pipe is centered in casing.

3. Seal each end of the encasement pipe with clamped rubber or neoprene end seals.

4. Install tracer wire along top of casing piping, being taped at every 10-foot intervals.

J. Roadway to be crossed via open cut method. Asphalt to be replaced in kind and in accordance with City specifications and requirements.

K. Connect to existing sanitary sewer piping with PVC wye, restrained saddle, or other approved fittings.

1. Connection fittings are incidental to the sanitary sewer tap and shall not be paid separately.

1.012 TRENCH

A. Depth: Minimum 6 inches to the top of the pipe for gravity sewer service lines and minimum 30 inches to the top of the pipe for force sewer service lines.

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. 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.

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: 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.

1.013 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.

D. Test system operation in presence of Project Oversight to ensure functionality of installed facilities.

1.014 CLOSEOUT ACTIVITIES

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