Statement of Work.docx

Department of Health and Human Services Indian Health Service

Statement of Work Construction of a New On-Site Wastewater System for SR# 580 K Rhodd

1.01 PURPOSE OF THE PROJECT

A. The Oklahoma City Area Office (OCA), Indian Health Services has a requirement for furnishing and installing a wastewater system as shown on the drawings and abandon existing septic tank.

1.02 SITE LOCATION

A. 3276 Redbud Road.

White Cloud, Brown County, Kansas 66094

1.03 Construction Schedule

A. Contact the Engineering Technician three business days before the start of any work.

B. Failure to perform work on the date scheduled shall require rescheduling the work 24-hours in advance.

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

1.04 GOVERNMENT CONTACT INFORMATION

A. Contracting Office’s Representative Ted Schlueter, Senior Field Engineer, Indian Health Service Holton OEH&E 324 New York Ave, Holton, KS 66436 Office Phone: 785.364.4164 Ted.schlueter@ihs.gov

B. Construction Inspector Jim Shane, Engineering Technician Indian Health Service Holton OEH&E 324 New York Ave.

Holton, KS 66436 Office Phone: 785.364.4164 Cell Phone: 785.224.7626 Email: Donald.shane@ihs.gov

C. Contract Specialist

701 market Drive Oklahoma City, OK 73114 Office Phone: 405-951-3740 jeffrey.earnest@ihs.gov

1.05 QUALITY ASSURANCE

A. Perform work under the direction of personnel licensed in the state including plumbing.

1.06 pERIOD OF PERFORMANCE / WARRANTY A. 2 months from date of contract award to complete the work.

B. Provide a minimum one-year (12 months) warranty for all materials and labor, covering defects in the materials or workmanship.

1.07 MATERIALS AND DELIVERABLES

A. Pipe, fittings and cleanouts:

1. Polyvinyl Chloride (PVC) pipe, fittings and cleanouts shall be PVC schedule 40 as specified in the bid schedule.

2. Bell ended joints conforming to ASTM D 3212

3. Four (4) inch nominal diameter and longest pipe length available.

4. One and one half (1 ½) inch nominal diameter and longest pipe length available.

B. Septic tank:

1. 2-Compartment septic tank with a capacity of 1,250-gallons.

2. Access holes in tank lid shall be cast-in-place with a minimum diameter of 20 inches.

3. Inlet and outlet sanitary Tees and pipe; 4 inch schedule 40 PVC.

C. Effluent Filter and Assembly:

1. Filter rated for 800gpd flow rate.

2. 68 linear feet of 1/16 inch filter area.

3. Gasket seal to prevent effluent bypass.

4. NSF/ANSI certified and approved.

5. Baffle to fit 4-inch Schedule 40 pipe.

6. ¾ inch PVC lifting handle for filter that extends to within 2 inches of bottom of access lid.

7. Polylok, PL-68 Effluent filter or approved equal.

D. Adapter ring, access risers and covers.

1. Concrete tank adapter ring shall be of solid design and prevent movement of soil around the riser. Arc3009 Polylok, 24 inch, or approved equal.

2. Riser shall be a solid, double-walled polyethylene pipe. 24-inch N-12 by ADS Pipe, or approved equal.

3. Cover shall completely cover riser so to prevent gases from leaking out and be of solid construction. Covers to be Polylok 3008-West, 24-inch HDPE flat septic tank cover or approved equal.

4. Joint sealant applied between the riser and adapter and the adapter and tank. Sealant to be a bitumous plastic joint sealant. Ram-Nek RN 103, or approved equal.

E. Pump Station: Simplex fiberglass pump station with, effluent pump and control/alarm panel.

1. Tank:

a. 500 gallon capacity.

b. Inlet to accommodate for 4” PVC Schedule 40 Pipe.

c. 1 ½” outlet PVC hub.

d. 24” access risers to bring lid 2” above final grade.

2. Effluent pump: Liberty pump model 283 or approved equal.

a. ½ hp, 115VAC, 8.0A, 60Hz.

b. 50 gpm at 15ft of total dynamic head.

c. Shut off: 37ft, maximum 70 GPM.

d. 1 ½” NPT vertical discharge, handling 3\4 inch solids.

3. Control Panel; SPI Model SSC12B Simplex Control Panel or approved equal.

4. Electrical Wiring.

a. 10/3 UF, 600V, direct bury wire.

b. ¾” conduit

c. 30A disconnect, non-fused.

d. 15 A single pole breaker.

F. Chambers: Q4 Plus Standard Chamber or approved equal for the minimum requirement for absorption area of 1500sqft.

1. Construct chamber sections of high – density PolyTuff Polyethylene.

2. Meet the minimum requirement of AASHTO-H-10 for wheel load protection.

3. Standard chamber sections shall be a minimum 34 inches in width, 53 inches in length and 12 inches in height.

4. End Caps of chamber sections shall be of the same material as the chamber.

5. Open End Caps: Provide an opening to accommodate 4-inch PVC Schedule 40 pipe.

6. Closed End Caps shall have no opening.

7. End caps shall have opening to accommodate for 4-inch PVC Schedule 40 pipe for inspections ports.

G. Distribution / Drop Boxes:

1. Construct distribution/drop boxes and lids of concrete or injection molded HDPE.

2. Honeycombed and or cracked concrete boxes and lids are not allowed.

3. Inlet invert shall be 2 inches (minimum) higher than outlet invert.

4. A 45o or 90o elbow shall be installed to direct water flow way from outlet port.

5. Box inlet shall accommodate for a 1 ½” PVC Schedule 40 pipe and the outlet shall accommodate for 4” PVC Schedule 40 pipe.

H. Turf and Grasses (Fertilizer, Seed and Mulch):

1. Fertilizer: 20-10-10 mixture of 20% nitrogen, 10% Phosphorous, and 10% Pot Ash.

2. Seed Mixture: Blend of Kentucky 31, Fescue, and annual rye grass.

3. Mulch: Prairie (native) hay, not more than 2 years old and free of noxious weeds.

1.08 LEVEL OF EFFORT

A. Tank Installation:

1. Place tank in excavations at locations on the drawings or by Engineering Technician.

2. Excavation for tanks shall be 24 inches larger than the dimensions of the tank and 4 inches deeper to compensate for 4 inches of bedding.

3. Remove any water from excavation and check grade before setting tank.

4. Place 4 inches of crushed rock or sand for bedding of septic tank.

5. Place tank level.

6. Install inlet sanitary Tees in septic tank.

a. Extend inlet Tee to a depth of 6 inches below liquid level.

b. The bottom of the outlet opening shall be at least 3 inches lower than the bottom of the inlet opening.

7. Install effluent filter assembly in place of outlet sanitary Tee.

8. 3/4inch PVC lifting handle to extent to within 2-inches below bottom of access lid.

9. Fill tank with potable water before backfilling.

10. Connect riser adapter ring to top of septic tank with corrosion resistant fasteners and seal to tank with RN 103 Ram-Nek joint sealant.

11. Connect riser to adapter ring with stainless steel screws and seal with RN 103 Ram-Nek joint sealant.

a. Rise and cover shall terminate at approximately 2 inches above finish grade.

B. Pump Station Installation.

1. Place pump station in locations designated on drawings or by Engineering Technician.

2. Excavations for station shall be 24” larger the dimensions of station and 4” deeper to compensate for 4” of bedding.

3. Remove any water from excavation and check grade before setting tank.

4. Place 4 inches of crushed rock or sand for bedding of septic tank.

5. Place pump station level.

C. Electrical supply for pump station

1. Install 15A breaker in open space in home electrical distribution panel.

2. Install 30A non-fused disconnect on outside of home near electrical distribution panel.

3. Install control box on a 4” x 4” green pressure treated post. Control box shall be mounted on post to be a minimum of 3’ above finish grade.

4. Install 10/3 wire from installed breaker to disconnect and make connections to supply electrical power to pump station.

5. Install 10/3 wire in ¾” conduit from disconnect to pump station control box and make all connections to supply electrical power to pump station. Bury depth of conduit shall be 18” deep.

D. Sewer Lines Installation; 4” PVC Schedule 40 pipe:

1. Furnish and install sewer lines at locations on the drawings.

2. Connection to existing sewers: 3” or 4” PVC pipe at locations on the drawing.

3. No pipe joints shall be made within 2 feet of inlet or outlet of septic tank or edge of tank excavation.

4. Minimum slope for sewer lines is 1/8 inch per foot (1%).

5. Ninety-degree bends not allowed between home and septic tank.

E. Wastewater Line Installation; 1 ½” PVC wastewater line:

1. Furnish and install a wastewater line at locations on the drawing.

F. Sewer Line Cleanout Installation:

1. Install cleanout risers at an angle equal to or less than 90 degrees measured from horizontal.

2. Bed the bottom of cleanouts with crushed rock or sand.

3. Two-Way Clean outs:

a. Install two-way clean outs at a spacing not to exceed 200 feet.

b. Install two-way clean outs so that the service can be rodded or snaked in either direction.

4. One-Way Clean outs:

a. Install one-way clean outs at a spacing not to exceed 100 feet.

b. Install one-way clean outs so that the service can be rodded or snaked in the direction of flow.

G. Force 1 ½” Sewer Line Installation:

1. Install force sewer line in locations indicated in drawing.

2. Force sewer line shall maintain a minimum excavation depth 28”.

3. Connect to pump station outlet pipe.

4. Connect to distribution / drop box.

H. Drop / Distribution Box

1. Box shall be place on undisturbed soil or be bedded with a 4” layer of gravel or sand.

2. Box shall be placed level.

3. Connect 1 ½” force sewer service line. Use of a 2” reducer is acceptable connect to box.

4. Connect to distribution header pipe of lateral drain field.

I. Chambered Drain Field Installation:

1. Install 100 lineal feet of chambers in locations and elevations as indicated on drawings.

2. Maximum trench depth: 32 inches.

3. Trench width shall be a minimum of 36 inches for standard chamber.

4. Maximum trench length: 100 feet of chamber sections in any given path.

5. Minimum distance between trenches: 9 feet center to center of trenches.

6. Minimum depth of back fill above chamber sections: 8 inches.

7. Install inspection port risers and caps at each end of chambered trench.

8. Mound trench backfill material 6 inches above the natural ground to allow for settlement.

9. Rake all smeared or compacted surfaces of sidewalls and trench bottoms to a depth of 1 inch.

10. Before chamber section placed, remove loose material from trenches.

11. Leave each premise in a neat and orderly condition, restoring it as near as possible to its original condition and to the approval of the Engineering Technician.

12. Trenches left open and exposed to rainfall (>1/4 inches), are subject to rejection by the Engineering Technician.

J. Turf and Grasses (Fertilizer, Seed and Mulch):

1. Fertilizing:

a. Apply using mechanical equipment.

b. Uniformly distribute.

c. Incorporate into soil using harrow or other suitable equipment.

d. Conform to recommendations of local county extension agent.

e. Fertilize the area at an application rate of 200 pounds per acre.

2. Seeding:

a. Sow seed using either equipment suited to that purpose or scatter seed uniformly over area with hand seeders when the weather is sufficiently quiet to prevent seeds from blowing away.

b. Plant when soil temperature is 60° F or greater.

c. Application rate

1) 200 pounds per acre of the Kentucky 31, fescue, and rye grass.

d. Lightly rake soil to cover the seed with approximately ¼ inch of soil.

3. Mulching:

a. Place hay mulching on seeded area loose enough to allow some sunlight to penetrate and air to circulate but thick enough to shade the ground, conserve soil moisture, and prevent/reduce erosion.

b. Do not perform mulching activities during periods of excessively high winds, which would preclude the proper placing of the mulch.

c. Apply straw or hay uniformly over the disturbed area to a loose depth of ½ to 1½ inches using 2 to 2 ½ tons of mulch per acre.

d. Immediately after spreading, anchor mulch using a mulch tiller consisting of a series of dull flat discs with notched edges or other approved equipment.

K. Watering

1. Follow seed supplier’s recommendations.

L. Existing septic tank abandonment

1. Thoroughly clean tank and dispose of wastewater.

2. Break bottom and walls of tank so that no water can be contained

3. Crush lid inside of tank.

4. Backfill with excess soil from newly installed septic tank.

5. Compact soil to minimize any settlement.

1.09 TESTING

A. Visually inspect each pipe joint for leakage.

B. Repair all leaks before backfilling.

1.010 SITE RESTORATION

A. Restore site to as close to the original condition.

B. Provide Record Drawings to the Project Engineer.

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