Creek_Aerobic_Systems_Spec.pdf

SANITATION FACILITIES

CONTRUCTION

INDIVIDUAL AEROBIC SYSTEMS

FOR THE MUSCOGEE (CREEK) NATION

IN

HANNA - OK 10-S14

MISTY VALLEY - OK 10-S15

SALEM - OK 10-S16

MCINTOSH COUNTY, OKLAHOMA

SPECIFICATIONS

Date: August 26, 2016

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES

INDIAN HEALTH SERVICE

OKLAHOMA CITY AREA INDIAN HEALTH SERVICE

OFFICE OF ENVIRONMENTAL HEALTH AND ENGINEERING

DIVISION OF SANITATION FACILITIES CONSTRUCTION

OKMULGEE OEHE FIELD OFFICE

Project No. OK10 S14, S15, S16 Aerobic Systems Date: August 26, 2016 McIntosh County, OK

Author: Daniel C. Tompkins, P.E. Page 2 of 43 Creek Aerobic Systems

SECTION 00 01 10

TABLE OF CONTENTS

SECTION NUMBER - TITLE PAGE

Section 00 01 00 - Project Title Page 1

Section 00 01 10 - Table of Contents 2

Section 01 11 00 – Summary of Work 3-4

Section 01 33 00 – Submittal Procedures 5

Section 31 23 16.26 – Rock Removal 6-7

Section 33 35 13 – Aerobic Spray Wastewater System 8-19

Section 33 36 33 - Concrete Septic Tank 20-28

Section 33 36 33.1 - Chambered Absorption Fields 29-33

Section 33 31 13.2 - Sanitary Sewer Lines 34-40

Section 33 49 13.01 - Manhole Abandonment 410-42

Section 33 49 13.02 - Lift Station Abandonment 43-44

END OF SECTION

Author: Daniel C. Tompkins, P.E. Page 3 of 43 Creek Aerobic Systems

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.01 SUMMARY

A. Provide the following to complete the work in these Specifications and Contract Drawings:

1. Tools.

2. Equipment.

3. Materials.

4. Labor.

5. Supplies.

6. Manufactured articles.

7. All transportation to complete the work.

8. Temporary facilities.

B. Incidentals Items: Furnish all work, materials, and services not expressly provided by others or not expressly called for in the contract, but which are necessary for the completion of the work.

1.02 SITE LOCATION

A. Location:

1. Hanna, Misty Valley and Salem, McIntosh County, Oklahoma.

1.03 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Install individual aerobic wastewater treatment systems:

1. Hanna: 7 systems.

2. Misty Valley: 3 systems.

3. Salem: 6 systems.

B. Abandon manholes:

1. Hanna: 3 manholes.

2. Misty Valley: 3 manholes.

3. Salem: 3 manholes.

C. Abandon lift station:

1. Misty Valley: 1 lift station.

D. Septic Tank and Chambered Drain fields

Author: Daniel C. Tompkins, P.E. Page 4 of 43 Creek Aerobic Systems

1. Misty Valley 2 septic tank/drain fields.

1.04 ADDITIONAL INFORMATION

A. Give notice to the Contracting Officer’s Representative (COR), Project Engineer and

Construction Inspector two business days before start of work.

1. Failure to provide notice may result in re-excavation of buried structures or piping for inspection at the contractor’s expense.

B. Normal business hours are from 8 a.m. to 5:00 p.m.

1. Work outside of those hours must be approved in advance by the Contracting Officer’s

Representative.

2. Unapproved work outside of those hours may result in re-excavation of buried structures or piping for inspection at the contractor’s expense.

PART 2 PRODUCTS (Not Used.)

PART 3 EXECUTION (Not Used.)

Author: Daniel C. Tompkins, P.E. Page 5 of 43 Creek Aerobic Systems

SECTION 01 33 00

SUBMITTAL PROCEDURES

A. Section includes submittal procedures.

B. Related Requirements:

1. Section 33 35 13 - Aerobic Spray Wastewater System.

PART 2 PRODUCTS (Not Used.)

PART 3 EXECUTION

3.01 SUBMITTAL PROCEDURES

A. Required submittals:

1. Aerobic tank (including reinforcement details if applicable).

2. Aerator.

3. Effluent Pump.

4. Freeze Drains.

5. Sprinkler Heads.

6. Pump Controller.

B. Provide one copy of each submittal to the COR.

1. Copies may be any one of the following:

a. Downloads from the manufacturer’s web site (preferred.)

b. Scanned from hard copies (300 dpi black and white minimum.)

2. Send to:

a. Emailed: dan.tompkins@ihs.gov

b. Mailed: Daniel C. Tompkins, P.E., Oklahoma City Area Indian Health Service 701 Market Drive Oklahoma City, OK 73114

C. Allow one week for submittal approval.

D. Replace unapproved materials at the Contractor’s expense.

Author: Daniel C. Tompkins, P.E. Page 6 of 43 Creek Aerobic Systems

SECTION 31 23 16.26

ROCK REMOVAL

A. This section pertains to the rock excavation necessary for the construction of the facilities as indicated on the drawings.

1. Section 33 35 13 - Aerobic Spray Wastewater System.

1.02 MEASUREMENT AND PAYMENT

A. Rock:

1. Measurement: Cubic feet of rock removed

2. Payment: Full compensation for:

a. Earth Work:

1) Hydraulic fracturing.

2) Excavation including over excavation.

3) Removal of rock from site.

B. Imported Backfill:

1. Measurement: Tons of backfill as evidenced by weigh tickets.

a. Earth Work:

1) Backfilling.

2) Compaction.

b. Provision and installation of materials:

1) Select backfill.

1.03 DEFINITION

A. Solid Rock:

1. Large masses of rock which, in the opinion of the Project Engineer, cannot be excavated without excavation with a rock bucket or hydraulic fracturing.

Author: Daniel C. Tompkins, P.E. Page 7 of 43 Creek Aerobic Systems

B. Loose Rock:

1. Boulders and other detached stones each having a volume of 1-cubic yard or more.

PART 2 PRODUCTS (NOT APPLICABLE.)

3.01 METHODS OF EXCAVATION

A. Rock excavation may be accomplished by any or all of the following methods depending on the rock type:

1. Excavation with earthmoving equipment.

2. Hydraulic fracturing.

3.02 RESPONSIBILITIES

A. Remove excavated rock from site unless otherwise directed by the Project Engineer.

Author: Daniel C. Tompkins, P.E. Page 8 of 43 Creek Aerobic Systems

SECTION 33 35 13

AEROBIC SPRAY WASTEWATER SYSTEM

A. This section covers the provision and installation of Aerobic Spray Wastewater Systems including:

1. Electrical wiring.

2. Service Contracts:

a. Service Contract I

1) Three-year service contract.

2) Two-year warranty.

3) Applies to occupied homes.

b. Service Contract II

1) Two-year service contract.

2) Two-year warranty.

3) Applies to unoccupied homes as identified by the Project Engineer.

3. System operation manuals and instructions and training in the systems operation and maintenance.

1. Section 01 33 00 – Submittals.

2. Section 31 23 16.26 – Rock Removal.

1.02 REFERENCES

A. Oklahoma Department of Environmental Quality (DEQ), Title 252, Chapter 641, Subchapter

10 and 12.

1.03 MEASUREMENT AND PAYMENT

A. Service Contract I:

1. Measurement: Lump Sum.

Author: Daniel C. Tompkins, P.E. Page 9 of 43 Creek Aerobic Systems

a. Three-year service contract.

B. Service Contract II:

a. Two-year service contract.

C. Aerobic Wastewater Treatment Unit (ATU):

a. Provision and installation of materials including:

1) Aerobic Treatment Unit including tank, aerator, control panel and all components.

2) Trash tank/compartment, baffling and all components.

3) Pump tank/compartment, effluent pump and all components.

4) Wiring from breaker box to ATU control panel and connections.

5) Building sewer and connections from building to trash tank including all pipe, cleanouts and fittings.

b. Earthwork including:

1) Excavation and trenching.

2) Backfill.

3) Compaction.

4) Rough and fine grading.

5) Site restoration.

c. Other work:

1) Provide copies of documents required by the Oklahoma Department of

Environmental Quality to the Project Engineer.

D. Liquid Chlorine Disinfection System:

Author: Daniel C. Tompkins, P.E. Page 10 of 43 Creek Aerobic Systems

1. Measurement: Each system installed.

1) Chlorine feed pump.

2) Liquid chlorine tank.

3) All piping, valves, fittings and connections.

4) Electrical wiring and connections.

5) Liquid chlorine for startup.

E. Spray Heads with Pressure Lines:

1. Measurement: Each spray head installed.

1) Spray head including riser pipe, freeze drain and concrete collar.

2) All piping, fittings, and connections from spray head to pump tank outlet.

b. Earthwork including all:

1) Clearing and grubbing.

2) Excavation and trenching.

3) Backfill.

4) Compaction.

5) Rough and fine grading.

1) Site restoration.

F. Electrical Connection:

1. Measurement: Each system installed.

Author: Daniel C. Tompkins, P.E. Page 11 of 43 Creek Aerobic Systems

1) Breakers.

2) Conduit.

3) Wiring.

4) Junction boxes and all other items required for a complete operating system.

b. Earthwork including:

G. Septic Tank Abandonment:

1. Measurement: Each tank abandoned.

2. Payment: Shall be full compensation for:

a. Pumping the tank including:

1) Proper disposal of tank contents.

b. Earthwork including all:

1) Excavation.

H. Disposal of excess material is incidental to earthwork operations.

a. No separate payment will be made.

I. Seeding:

1. Seeding is considered incidental to earthwork operations.

Author: Daniel C. Tompkins, P.E. Page 12 of 43 Creek Aerobic Systems

a. No separate payment will be made.

1.04 SUBMITTALS

1. Aerobic tank (including reinforcement details if applicable).

2. Aerator.

3. Effluent Pump.

4. Freeze Drains.

5. Sprinkler Heads.

6. Pump Controller.

1.05 QUALITY ASSURANCE

A. Contractor must be a current Licensed Installer registered with the Oklahoma Department of Environmental Quality (ODEQ.)

B. Aerobic tanks and other materials shall meet minimum requirements of the appropriate state agency regulating onsite septic systems.

1.06 PERMITS

A. Obtain authorizations and permits.

1. Use DEQ form 641-575.

B. Provide copies of authorization and permit to the Project Engineer before construction begins.

C. Notify DEQ prior to start of construction.

D. Submit completed DEQ form 641-576A to DEQ.

E. Provide a copy to the Project Engineer within 10 working days after the work has been completed.

PART 2 PRODUCTS

2.01 TRASH TANKS

A. Pre-cast Concrete Tank Requirements:

1. Monolithically poured and mechanically vibrated.

2. Min. 28-day compressive strength of 3000 psi.

3. Min. reinforced concrete wall thickness - 2 1/2 inches.

Author: Daniel C. Tompkins, P.E. Page 13 of 43 Creek Aerobic Systems

4. Min. bottom thickness - 3 inches.

5. Min. cover thickness - 3 1/2 inches.

B. Fiberglass/Plastic Tank Requirements

1. Tanks will meet IAPMO standard PS-1-99 or CSA B66-00 and will be installed to manufactures recommendations.

2. Minimum capacity 300 gallons or for systems with an average daily flow greater than 300 gallons the tank will have a capacity equal or greater than the average daily flow.

2.02 AEROBIC TREATMENT UNIT

A. Treatment Unit will meet the most recent ANSI/NSF Standard 40 and DEQ 252:641-10-2. b.

(2).

B. Provide a liquid disinfection unit between the aerobic unit and the pump tank.

C. When required by DEQ water body restrictions, the ATU shall also provide nitrogen removal meeting the requirements of ANSI/NSF Standard 245.

2.03 PUMP TANK

A. Meet the requirements of ANSI/NSF or DEQ 252:641-7-2.

B. Have a minimum capacity of 700 gallons or, for systems with an average daily flow over 350 gallons, tanks will have a capacity twice the average daily flow.

C. Tank will have a sampling port at the pump tank discharge outlet or, in the treated sewage line following the tank.

D. Tank will be equipped with a float to ensure the tank is never more than ½ full.

E. Tank will have a high water alarm set to activate if the tank becomes more than ½ full.

2.04 SPRINKLER SYSTEM

A. Sprinkler piping shall be colored purple (Pantone 522) by the manufacturer.

B. Provide a freeze drain for each sprinkler.

C. Provide an alarm, which will alert the owner/operator of a system failure.

2.05 SERVICE CONTRACTS

A. Service Contract I.

1. Provide a 3-year service contract.

2. Provide a 2-year warranty on all parts and workmanship.

Author: Daniel C. Tompkins, P.E. Page 14 of 43 Creek Aerobic Systems

a. Applies to occupied homes.

B. Service Contract II.

1. Provide a 2-year service contract.

2. Provide a 2-year warranty on all parts and workmanship.

3. Applies to unoccupied homes as identified by the Project Engineer.

2.06 OPERATION AND MAINTENANCE

A. Provide system operation manuals

2.07 SEED

A. Scotts EZ Seed Sun and Shade Grass Patch and Repair or equal.

3.01 SERVICE CONTRACTS

A. Service Contract I includes:

1. The required bi-annual inspection of the system to ensure proper operation of all components and controls.

2. Testing.

3. Replacement of broken spray heads and pressure lines as needed.

4. A one-time replacement of the effluent pump:

a. Replace when needed or at 2 years 11 months, whichever comes first.

b. Includes a one-year warranty on parts and workmanship.

1) Beginning the day the part is replaced.

c. Notify the Okmulgee OEHE office when work starts

B. Service Contract II.

1. The required bi-annual inspection of the system to ensure proper operation of all components and controls.

2. Testing.

3. Replacement of broken spray heads and pressure lines as needed.

Author: Daniel C. Tompkins, P.E. Page 15 of 43 Creek Aerobic Systems

C. Preform the following tests using the specified criteria as an ongoing part of the two-year maintenance contract:

REQUIRED TESTS MINIMUM STANDARDS FREQUENCY

Free-chlorine residual or fecal coliform

0.2 mg/liter in or after the pump tank or less than 200mpn/1000 ml

2 per year, to be performed every 6 months

Depth of sludge in trash tank

Measure and record Once per 6 months

Volume of sludge in

ATU

Measure and record Once per 6 months

Clarity test 8-inch disk visible at bottom of pump tank when pump tank is 1/3 full

Once per 6 months

D. Submit the test results OEH&E office and the homeowner.

3.02 EXISTING SEPTIC TANK

A. Pump the existing septic tank.

1. Dispose the contents in accordance with state and federal requirements.

B. Inspect the tank to determine if it is in good condition.

1. Install a new rise and lid matching those on the aerobic unit.

a. Thoroughly clean the tank surface.

b. Seal the riser with plastic mastic.

c. Connect the aerobic unit to the tank outlet.

2. If the tank is not in good condition:

a. Crush the tank, backfill and compact with suitable soil.

b. Finish grade excavated areas.

c. Locate abandoned septic tanks on the as-built drawing.

3.03 SOLID SEWER PIPE

A. Install solid sewer pipe from the house to the system.

1. Connect to the existing home sewer stub out.

2. Use 4-inch PVC SDR 35.

Author: Daniel C. Tompkins, P.E. Page 16 of 43 Creek Aerobic Systems

B. Minimum cover over solid sewer pipe is 12-inches.

C. Minimum slope between the house and the septic tank:

1. 1/8-inch per foot for 3 and 4-inch pipe.

2. 1/16-inch per foot for 6-inch and above pipe.

D. Maximum degree of bend in any fitting: 45 degrees.

E. Minimum distance between fittings: 6 inches.

F. Provide a two-way cleanout.

G. Solvent weld all joint connections.

3.04 TANK INSTALLATION

A. Place tanks in excavations at the locations and elevations designated on the plans or by the Project Engineer.

B. Place tank on level base:

1. Use a transit or 4-foot level.

2. Bring over excavated areas up to proper grade in 6-inch compacted lifts or with clean gravel.

3. If rock or uneven surfaces are encountered, use 4 inches of sand or fine-grained gradable material in the bottom of the excavation to provide a solid flat base.

a. Suitable on-site material may be used if approved by the Project Engineer.

4. Remove any water from excavation, and make sure bottom of excavation is to grade, smooth, tamped, and level before setting tank.

C. Place all tanks level using a transit or 4-foot level.

D. Fill to overflow with clean water:

1. Check for and repair leaks.

2. Confirm tanks remain level before backfilling.

E. Backfill and compact uniformly around the tank.

1. Backfill using a material that will settle well around the tanks.

2. Do not use large rocks or heavy clay.

3. Place the material around the tanks in layers, tamping and watering each layer.

Author: Daniel C. Tompkins, P.E. Page 17 of 43 Creek Aerobic Systems

F. Install tanks in accordance with manufacturer’s recommendations.

G. Pipe between tanks and plant is level.

H. Slope the plant discharge pipe 1/8-inch per foot.

I. Install access covers 2-inches above finish grade.

1. Provide suitable locking screws or locking device that meets with Project Engineer’s approval.

J. Do not drive over the tank during and after construction.

K. Backfill and compact piping from the house to the tank.

L. Finish grade excavated areas.

3.05 SPRINKLER SYSTEM

A. Design sprinkler system as per the ODEQ, Title 252, Chapter 641, Subchapter 12-7 and Appendix H, Figures 13-22 as a minimum guideline.

1. Installed as shown on the site drawing.

2. Application of effluent by sprinkler heads will be at the design radius.

B. Cover the design area without misting or overlapping of coverage areas.

1. Nozzles will have a 15-degree (150) or less trajectory to keep spray stream low to the ground surface.

C. Provide a uniform distribution of treated effluent.

D. Install a freeze drain below each sprinkler head:

1. Allow wastewater to drain below frost level.

2. Place crushed stone under, around and above freeze drains, and up to the concrete collar, as shown in Detail Drawing 02548-Sprinkler Head -1 or 02548-Sprinkler Head -2.

E. Landscape or terrace the sprinkler system application surfaces to prevent runoff from the site.

F. Set each sprinkler’s radius at length designated on the plans or by the Project Engineer.

G. Set each sprinkler’s arc adjustment to a 360° full circle unless otherwise designated on the drawings.

H. Set each sprinkler head in concrete pad.

Author: Daniel C. Tompkins, P.E. Page 18 of 43 Creek Aerobic Systems

1. Set pad flush with existing ground.

I. Sprinkler piping shall be rigid PVC as shown in Detail Drawing 02548-Sprinkler Head -1 or 02548-Sprinkler Head -2.

J. Application will be controlled by a timing device and will take place daily between 1:00 a.m.

and 6:00 a.m.

3.06 ELECTRICAL

A. Electrical power for the system aeration, effluent pump, and controls will meet all manufactures recommendations and will meet, or exceed all applicable state and federal electrical codes.

B. Provide power from the home’s breaker box to the aerobic unit.

3.07 DISINFECTION

A. Treated effluent will be disinfected prior to surface application and will meet the requirements of ODEQ 252:641-10-2(b) (3).

B. Maintain a free chlorine residual of two tenths of a milligram per liter (0.2 mg/L) in the pump tank.

3.08 INSPECTION AND TESTING

A. Each system will be fully operational at final inspection.

1. Fill the pump tank with water.

2. Test the entire unit.

3. Ensure proper operation of all components, controls and sprinkler heads.

B. Check each sprinkler head for correct radius, arc, spacing, and surface application area.

3.09 OPERATION AND MAINTENANCE

A. Provide to the homeowner all applicable system operation manuals.

B. Provide proper operation and maintenance training to the homeowner.

1. Include the addition of liquid chlorine.

2. Provide immediately after installation of the system and during the initial startup of the system.

3. Cost of the training are to be included in the system pricing.

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C. For each required bi-annual service, the system installer shall notify the local OEH&E office and the homeowner the day it will be performed to allow for inspection.

3.10 DISPOSAL OF EXCESS MATERIAL

A. Dispose of excess material including rock, broken concrete, bituminous materials, debris, or other materials not suitable for backfill at the location designated by the Project Engineer.

B. The cost to dispose of the material is considered incidental to the aerobic system bid item.

3.11 SEEDING

A. Seed all disturbed areas.

3.12 AS–BUILTS

A. Provide as-built information on each system.

Author: Daniel C. Tompkins, P.E. Page 20 of 43 Creek Aerobic Systems

SECTION 33 36 33

CONCRETE SEPTIC TANKS

A. Section includes:

1. Provision and installation of rectangular concrete septic tanks for residential home sites.

2. Abandonment of existing septic tanks.

B. Related requirements:

1. Section 31 23 16.26 – Rock Removal

A. Concrete Septic Tank

1. Measurement: each tank of the size listed on the bid schedule.

a. Earthwork including all:

2) Imported Bedding.

5) Rough and final grading.

6) Site restoration.

b. Provision and installation of materials including:

1) Septic tank.

2) Inspection ports.

Author: Daniel C. Tompkins, P.E. Page 21 of 43 Creek Aerobic Systems

3) Manholes.

4) Baffles.

5) Effluent filter

6) Appurtenances.

Environmental Quality.

B. Septic Tank Abandonment

1. Measurement: each tank abandoned.

4) Final grading.

1) Imported backfill material.

1.03 REFERENCES

A. Reference Standards:

1. Use current standard.

2. ACI 211.1-89 - Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete.

3. ACI 308-81 - Revised 1986 - Standard Practice for Curing Concrete.

Author: Daniel C. Tompkins, P.E. Page 22 of 43 Creek Aerobic Systems

4. ACI 309R-87 - Guide for Consolidation of Concrete.

5. ASTM A82-88 - Specification for Steel Wire, Plain, for Concrete Reinforcement.

6. Oklahoma Department of Environmental Quality (DEQ), Title 252, Chapter 641

A. Product Data:

1. Septic tank with:

a. Reinforcement details.

b. Inspection ports.

c. Manhole openings.

d. Baffle details.

e. Pipe connection details.

2. Effluent filter.

A. Qualifications

1. Installers certified by DEQ.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Delivery and Acceptance Requirements:

1. Tanks with exposed reinforcement will be rejected and replaced at the

Contractor’s expense.

2. All tanks will be cured for a minimum of 28 days. “Green” tanks will be rejected and replaced at the Contractor’s expense.

B. Storage and Handling Requirements:

1. Tanks with cracks from casting or handling, including placement will be rejected and replaced at the Contractor’s expense.

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2.01 MANUFACTURED UNITS

A. Manufacturers.

1. Concrete Septic Tanks

a. Hausner's Precast Concrete Products, Inc.

1) Address: P.O. Box 32, Drumright, OK 74030.

2) Telephone: 918.352.3479

3) Web: http://www.hausners.com/

2. Effluent Filter

a. Zabel Environmental

1) Telephone: 800.396.8140

2) Web: www.hausners.com/

b. Zoller/Clarus Environmental

1) Address: 3649 Cane Run Rd, Louisville, KY 40211

2) Telephone: 800.928.7867

3) Web: www.clarusenvironmental.com

3. Substitution Limitations.

a. Manufacturers meeting the requirements of this specification will be given equal consideration.

2.02 SEPTIC TANKS:

A. Pre-cast Septic Tank Requirements:

1. Monolithically poured and mechanically vibrated.

2. Min. reinforced concrete wall thickness 2 1/2 inches.

3. Minimum bottom thickness 3 inches.

4. Minimum cover thickness 3 1/2 inches.

http://www.hausners.com/

Author: Daniel C. Tompkins, P.E. Page 24 of 43 Creek Aerobic Systems

5. Concrete minimum 28-day compressive strength 4,000 p.s.i.

B. Compartments:

1. Provide a one or two compartment septic tank as required in the bid schedule.

2. Access Hole Risers and Covers:

a. Risers:

1) Concrete pipe.

2) Polyethylene pipe with gasket connections.

3. Covers:

1) Made of the same material as the riser

2) Provide warning label printed with information regarding the hazards present when entering a septic tank affixed or supplied by the manufacturer.

3) Provide cast-in-place or integral lifting handles for each cover.

C. Inspection Ports:

1. Provide an air and water tight inspection opening consisting of SDR 35, ASTM

3034 PVC at least 8 inches in diameter, over the inlet and outlet baffles.

2. Center the inspection ports directly above the inlet and outlet baffles.

3. The upper end of the pipe shall terminate 2 inches above final grade and be securely capped.

D. Inlet/outlet Baffles:

1. Provide tanks with inlet and outlet connections for 4-inch PVC pipe.

2. Provide vertical PVC sanitary tee.

3. Provide 2 inches of clear space below the top of the tank and top of vertical tee.

4. Extend inlet tee to a depth of 6 inches below the liquid level.

5. Extend the outlet tee to 20% to 40% of the liquid depth below the liquid level.

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6. The bottom of the outlet opening shall be at least 2 inches lower than the bottom of the inlet.

7. Provide tee that will accept the effluent filter.

E. Liquid Capacity

1. Minimum capacity below outlet: 1000 gallons for up to and including 4 bedrooms plus 250 gallons for each additional bedroom or as indicated in the bid schedule.

2. Minimum liquid depth: 3 feet

3. Maximum liquid depth: 6 1/2 feet

F. Minimum air space above liquid level: 8 inches

G. Two compartment tanks

1. Influent chamber not less than ½ or greater than 2/3 of the tanks’ total liquid capacity.

2. Passage in the common wall between chambers located below the liquid level between 20% and 40% of liquid depth.

3. Minimum 4-inch diameter vent between chambers.

H. Joints below the liquid level shall be of monolithic construction or have interlocking V-notch, shiplap or tongue and grove joints.

1. Joint Sealant

a. Bitumastic sealing compound, flexible gasket, or approved equal.

I. Notify the construction inspector two full business days before installation begins.

J. Place tank on undisturbed earth.

1. Bring over excavated areas up to proper grade in 6-inch compacted lifts of clean gravel.

K. Remove any water from excavation and verify grade before setting tank.

L. Verify the tank is within 1-inch of level in all directions.

M. Seal joints with bitumastic sealing compound, flexible gasket or approved equal.

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N. Seal inlet and outlet with temporary plugs until connections are made to the inlet and outlet lines.

O. Set the top of the tank a minimum of 6-inches below finished grade. Do not exceed

24-inch cover depth unless tank is designed for deeper bury depth and Project Engineer approves.

1. Install manhole risers, and terminate access cover below-ground, no deeper than 6 – 12 inches, or terminate flush with the ground.

a. If flush with the ground, provide suitable locking screws or locking device that meets with Project Engineer’s approval.

b. Seal access hole risers, covers, and inspection ports.

P. Testing and Inspection:

1. Before backfilling, fill the septic tank with potable water to the outlet liquid level.

2. Visually inspect the tank for leaks in the presence of the construction inspector.

a. Correct any leaks found.

Q. Backfill and compact uniformly around the tank.

1. Compact in 12-inch lifts using a vibratory rammer tamper in a manner that will not produce undue strain on the tank.

a. Compact in the presence of the construction inspector.

b. Vibratory plate type tampers are not approved.

2. Provide a minimum of three passes over all loose material.

a. If compaction is not adequately preformed, remove all backfill material and re-compact at the contactors expense.

3. Do not drive over the tank during and after construction.

2.03 EXISTING SEPTIC TANK ABANDONMENT

A. Abandon existing septic tanks and/or wet wells where directed by the Project

Engineer.

B. Pump tanks prior to abandonment. Dispose the contents in accordance with state and federal requirements.

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C. Remove and dispose of any interior pipes, plumbing, or pumps.

D. Remove and dispose of concrete tank cover, risers, and inspection pipes.

E. Crush the tank and backfill interior of the tank with suitable, compactable soil material.

1. Finish grade excavated areas.

F. Locate abandoned septic tanks on the as-built drawing.

2.04 DISPOSAL OF EXCESS MATERIAL

A. Dispose of excess material including rock, broken concrete, bituminous materials, debris, or other materials not suitable for backfill at the location designated by the

B. Other disposal sites may be used if approved in advance by the Project Engineer.

C. The cost to dispose of the material is considered as subsidiary to and part of the cost for the septic tank bid item.

2.05 AS–BUILTS

A. Provide as-built information on each system.

Author: Daniel C. Tompkins, P.E. Page 28 of 43 Creek Aerobic Systems

SECTION 33 36 33.1

CHAMBERED ABSORPTION FIELDS

A. This section includes construction of absorption fields for on-site disposal of wastewater utilizing Chambered Sections.

1.02 REFERENCES

A. ASTM D 3034 – Type PSM Polyvinyl Chloride (PVC) Sewer Pipe and Fittings

B. Oklahoma Department of Environmental Quality (DEQ), Title 252, Chapter 641

C. AASHTO – Polyethylene Chamber

A. Absorption field.

1. Measurement: linear feet of chambers installed.

2) Imported Bedding.

1) Distribution Boxes (if required)

2) Retention Structures (if required)

Author: Daniel C. Tompkins, P.E. Page 29 of 43 Creek Aerobic Systems

Environmental Quality.

A. Solid PVC Pipe

B. Polyethylene Chamber

C. Distribution Boxes (if required)

D. Retention Structures (if required)

A. Contractor shall have a current Oklahoma Department of Environmental Quality (ODEQ) Contractor certification Class “A,” “B,” or “C.”

B. Excavation or construction of drain fields will not be allowed when the moisture content of the soil is greater than the plastic limit or when the occurrence of rain, snow, or frost is such that the quality of construction may be impaired.

C. Drain field materials shall meet minimum requirements of the appropriate state agency regulating onsite septic systems.

1.06 PERMITS (if required)

A. Provide authorizations and permits DEQ form 641-575.

B. Provide copies of authorization and permit to the Project Engineer before construction begins.

2.01 SOLID SEWER PIPE AND FITTINGS

A. SDR 35 or Schedule 40 PVC pipe and fittings shall conform to ASTM D 3034.

2.02 CHAMBER

A. Chamber sections will be constructed of high –density PolyTuff Polyethylene.

Chamber sections will meet the minimum requirement of AASHTO-H-10 for wheel load protection. Standard chamber sections will be a minimum 36 inches (36”) in

Author: Daniel C. Tompkins, P.E. Page 30 of 43 Creek Aerobic Systems width, 75 inches (75”) in length and 12 inches (12”) in height. DEQ approved EQ-36 chambers, will be a minimum 22 inches (22”) in width, 100 inches (100”) in length and 12 inches (12”) in height. EQ-24 chambers will not be allowed.

B. Endplates for the chamber sections will be constructed of the same material as the chamber. Open endplates will provide an opening to accommodate 4-inch PVC SDR 35 pipe. Closed endplates will have no opening.

2.03 DISTRIBUTION BOXES

A. Construct distribution boxes and lids of concrete or injection molded HDPE.

1. Honeycombed concrete boxes and lids will be rejected and replaced at Contractor’s expense

B. All Box inlets and outlets will be 4-inches.

C. All outlets will be one-inch lower than the inlet.

2.04 RETENTION STRUCTURES

A. Construct retention boxes and lids of concrete or injection molded HDPE.

1. Honeycombed concrete boxes and lids will be rejected and replaced at Contractor’s expense

B. All Box inlets and outlets will be 4-inch

C. All outlets will be seven inches (minimum) higher than the inlet.

3.01 GENERAL

A. Construct chambered drain field in accordance with Project Engineer’s design or DEQ Authorization/permit.

1. Variations from the design are not permitted unless approved in writing by the

2. All work required to bring the system into compliance with the design or authorization/permit shall be at the Contractor’s expense.

B. Construct the chamber drain field in accordance with the drawings and DEQ regulations.

Author: Daniel C. Tompkins, P.E. Page 31 of 43 Creek Aerobic Systems

C. Distribution piping to and between chamber trenches will be connected in accordance with the chamber manufacturer's recommendations. Backfill material shall be hand selected to be free of organic and other potentially clogging material and hand-placed to a point 3 inches above the highest chamber perforation. The remaining backfill material above that indicated above may be mechanically placed.

3.02 SOLID SEWER PIPE

A. Install ASTM 3034, SDR 35 solid sewer pipe or Schedule 40 PVC from:

B. The building sewer to the inlet off the septic tank.

1. Install a two-way cleanout between the building sewer connection and the septic tank.

C. The outlet stub at the septic tank to the beginning of the drain field.

1. Minimum cover over solid sewer pipe is 10 inches.

2. Minimum distance from septic to drain field is five feet.

3. Solid sewer pipe from septic tank outlet to drain field will have a minimum drop of 2 inches or 1/8-inch per foot slope for 4-inch diameter pipe and 1/16-inch per foot for 6-inch diameter pipe, whichever is greater.

4. Solvent weld all joint connections.

3.03 CHAMBER TRENCH

A. Maximum trench depth: 30 inches

B. Minimum depth: 20 inches

C. Trench width will be a minimum 36 inches for standard chamber and 22 inches for

EQ-36 Chamber

D. Maximum trench length: 150 feet of chamber section in any given path.

E. The top of the louver in the highest absorption line will be a minimum two inches lower than the invert on the septic tank outlet.

F. Minimum distance between trenches: 8 feet center to center

G. Minimum depth of back fill above chamber section: 8 inches.

Author: Daniel C. Tompkins, P.E. Page 32 of 43 Creek Aerobic Systems

H. Trench backfill material shall be mounded 6 inches (6”) above the natural ground surface to allow for settlement.

I. Rake to a depth of 1-inch all smeared or compacted surfaces of sidewalls and bottom and remove loose material before chamber section is placed.

J. 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 Project Engineer.

K. Trenches left open and exposed to rainfall (>1/4”), are subject to rejection by the

Project Engineer

3.04 DISTRIBUTION BOXES

A. Install drop boxes in locations where steep slopes require that the drain field laterals be terraced and as directed by the Project Engineer.

3.05 DROP BOXES

A. Install drop boxes in locations where steep slopes require that the drain field laterals be terraced and as directed by the Project Engineer.

3.06 AS-BUILTS

A. Provide as-built information on each system in accordance with Section 01780 and DEQ form 641-576A.

Author: Daniel C. Tompkins, P.E. Page 33 of 43 Creek Aerobic Systems

SECTION 33 31 13.2

SANITARY SEWER LINES

A. Section includes the construction of sewer lines, connection to building mains and chambered absorption fields, septic tank, cleanouts, and appurtenances.

1.02 RELATED REQUIREMENTS:

a. Section 01 33 00. – Submittal Procedures.

A. PVC Sewer Service Pipe

1. Measurement: linear feet of sewer service pipe installed.

2. Payment: full compensation for:

2) Native bedding material.

1) PVC pipe and fittings.

2) Appurtenances.

1) Record drawings.

Author: Daniel C. Tompkins, P.E. Page 34 of 43 Creek Aerobic Systems

B. Two-way Cleanouts

1. Measurement: Each cleanout installed.

2. Payment: full compensation for:

2) Native bedding material.

1) PVC pipe and fittings.

2) Appurtenances.

1) Record drawings.

1.04 REFERENCES

A. Reference Standards:

1. Use current standard.

2. ANSI/AWWA C110 / A21.10 – Ductile-Iron and Gray-Iron Fittings, 3 Inch

Through 48 Inch, for Water and Other Liquids

3. ANSI / AWWA C111 / A21.11 – Rubber Gasket Joints for Ductile Iron and Gray- Iron Pressure Pipe and Fittings

4. ANSI / AWWA C151 / A21.51 – Ductile Iron Pipe, Centrifugally Cast, for Water or Other Liquids

5. ASTM A 126-93 Gray Iron Castings for Valves, Flanges, and Pipe Fittings.

Author: Daniel C. Tompkins, P.E. Page 35 of 43 Creek Aerobic Systems

6. ASTM A 746-94 Ductile Iron Gravity Sewer Pipe

7. ASTM D 1248 – Polyethylene Plastics Molding and Extrusion Materials

8. ASTM D 2122 – Determining Dimensions of Thermoplastic Pipe and Fittings

9. ASTM D 2321 – Practice for Underground Installation of Thermoplastic Pipe for

Sewers and Other Gravity-Flow Applications

10. ASTM D2487 – Classification of Soils for Engineering

11. ASTM D 3034 – Type PSM Polyvinyl Chloride (PVC) Sewer Pipe and Fittings

12. ASTM D 3212 – Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals

13. ASTM F 477 – Elastomeric Seals (Gaskets) for Joining Plastic Pipe

14. ASTM F 1417 – Installation Acceptance of Plastic Gravity Sewer Lines Using

Low-Pressure Air

1.05 SUBMITTALS

A. Product Data:

1. Conform to Section 01 33 00 – Submittal Procedures.

2. Pipe

3. Service Line Cleanouts

1.06 CLOSEOUT SUBMITTALS

A. Record Drawings.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Delivery and acceptance requirements:

1. Check delivered pipe for defects.

2. Inspect each piece for damage.

3. Remove any damaged pipes from job site.

Author: Daniel C. Tompkins, P.E. Page 36 of 43 Creek Aerobic Systems

B. Storage and handling requirements:

1. Handling:

a. Unload with a forklift or front-end loader with fork attachment.

b. Unloading by hand:

1) Remove one piece at a time.

2) Pass over the side or slide off the truck end.

3) Block the shipment to keep pipe from rolling off the truck.

c. Cold weather: use extra care to prevent impacts to the pipe.

2. Storage:

a. Stack on level ground.

b. Place the pipe bevel to bell when stacking.

3. Stack height:

a. Factory units: not more than 2 banded units high.

b. Single pipe: five feet maximum.

4. Do not stack next to heat sources such as boilers, steam lines, electrical equipment or engine exhausts.

5. Protect gaskets from heat, oil and grease.

C. Distribution along the trench:

1. Line pipe as near to the trench as possible to avoid excessive handling.

2. String pipe on the side away from the spoils pile.

3. Place the pipe to protect it from traffic and heavy equipment.

1.08 PACKAGING WASTE MANAGEMENT.

A. Dispose of packing materials at an approved landfill.

Author: Daniel C. Tompkins, P.E. Page 37 of 43 Creek Aerobic Systems

2.01 MANUFACTURED UNITS

A. Manufacturers.

1. PVC Pipe:

a. JM Eagle:

1) Address: 5200 West Century Blvd., Los Angeles, CA, 90045.

2) Telephone: 800-621-4404.

3) Internet address: www.JMEagle.com.

b. North American Pipe Corporation:

1) Address: 2801 Post Oak Blvd., Suite 600, Houston TX 77056.

2) Telephone: 800-999-7473.

3) Internet address: www.northanericanpipe.com.

c. CertainTeed:

1) Address: P.O. Box 860, Valley Forge, PA 19482.

2) Telephone: 800-233-8990.

3) Internet address: www.certainteed.com.

2. Substitution Limitations.

a. Manufacturers meeting the requirements of this specification will be given equal consideration.

B. Polyvinyl Chloride (PVC) Pipe and Fittings

C. Conform to ASTM D 3034

D. Pipe Class: SDR 35 or Schedule 40 as specified in the bid schedule.

E. Bell ended joints conforming to ASTM D 3212

F. Elastomeric gaskets conforming to ASTM F 477

G. Material: 4-inch nominal diameter unless otherwise indicated except as follows:

http://www.jmeagle.com/ http://www.certainteed.com/

Author: Daniel C. Tompkins, P.E. Page 38 of 43 Creek Aerobic Systems

1. As required by the roadway authority or permit.

H. Each length of pipe shall be clearly marked with the following:

1. Manufacturer

2. Nominal Pipe Size

3. The PVC Cell Classification

4. Type PSM PVC Sewer Pipe

5. ASTM Designation

6. Pipe Class

I. Verify that diameters are as indicated on the Drawings.

J. Verify that all products supplied are in new condition.

K. Inspect pipe and fittings for defects.

L. Remove materials from the site that are defective, damaged, used, unsound, or that otherwise do not meet the specifications.

3.01 SERVICE LINES

A. Furnish and install sewer service lines at the locations on the Drawings or as directed by the Project Officer.

1. Connect to the existing home sewer stub out if present.

2. Cap sewer service, and stake if no connection is made.

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

C. Maximum slope for sewer service lines is ½-inch per foot (4%).

D. Ninety-degree bends are not allowed between the house and the septic tank.

3.02 SEWER SERVICE LINE CLEANOUTS

A. Two-Way Cleanouts

Author: Daniel C. Tompkins, P.E. Page 39 of 43 Creek Aerobic Systems

1. Install two-way cleanouts between the home and the septic tank.

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

B. Install a 4-inch sewer tee in the sewer service line and connect risers of the same material from the tee to the ground surface.

C. Attach a schedule 40 PVC adapter and threaded plug to the end of the riser.

D. The Project Officer may specify that cleanouts be buried 3 to 6 inches below grade and be fit with a threaded cast iron plug.

3.03 TESTING

A. Visual inspect each joint for leakage.

B. Repair all leaks before backfilling.

3.04 SITE RESTORATION

A. Restore site to original condition.

3.05 RECORD DRAWINGS

1. Provide as-built information on each system.

Author: Daniel C. Tompkins, P.E. Page 40 of 43 Creek Aerobic Systems

SECTION 33 49 13.01

MANHOLE ABANDONMENT

A. Section includes the abandonment of existing manholes.

A. Item: Manhole abandonment

1. Measurement: each manhole abandoned

1) Placement of fill material.

b. Material:

1) Concrete

1) Removal of cast iron collar and cover.

2) Seeding.

2.01 SEED

3.01 ABANDONMENT

A. Remove the cast iron lid and frame from the manhole.

1. Haul to the nearest landfill or metal recycler.

B. Fill the ends of the sewer main with concrete so that no water or soil can enter the pipe.

C. Fill the manhole with soil.

1. Use excess soil from the aerobic tank excavation.

Author: Daniel C. Tompkins, P.E. Page 41 of 43 Creek Aerobic Systems

2. Compact the soil so that no settling will occur.

3. Seed disturbed areas.

E

Author: Daniel C. Tompkins, P.E. Page 42 of 43 Creek Aerobic Systems

SECTION 33 49 13.02

LIFT STATION ABANDONMENT

A. Section includes the abandonment of the existing lift station at Misty Valley.

A. Item: Lift station abandonment

1. Measurement: lump sum

1) Placement of fill material.

b. Material:

1) Concrete

1) Seeding.

2.01 SEEDING

3.01 ABANDONMENT

A. Remove pumps, wiring, controls, piping and access doors.

1. Haul to the nearest landfill or metal recycler.

B. Fill the ends of the sewer main with concrete so that no water or soil can enter the pipe.

C. Fill the lift station and valve vault (if existing) with soil.

1. Use excess soil from the aerobic tank excavations.

2. Compact the soil so that no settling will occur.

Author: Daniel C. Tompkins, P.E. Page 43 of 43 Creek Aerobic Systems

3. Seed disturbed areas.

E