2021 Well BPA Specifications by Lyle.pdf

BPA Individual Well Drilling April 2021 Location: State of Oklahoma

Author: Richard Fink, P.E. Table of Contents File: Individual Well Drilling BPA 2021 Section 00 01 10.0000 – Page 1 of 2

SECTION 00 01 10.0000

TABLE OF CONTENTS

SECTION NUMBER - TITLE

Section 00 01 00.0000 – Project Title Page

Section 00 01 07.0000 – Seal Page

Section 00 01 10.0000 – Table of Contents

Section 00 01 15.0000 – List of Drawing Sheets

Section 01 11 00.0000 – Summary of Work

Section 01 22 00.0000 – Unit Prices

Section 01 33 00.0000 – Submittal Procedures

Section 01 42 19.0000 – Reference Standards

Section 01 43 00.0000 – Quality Assurance

Section 01 77 00.0000 – Closeout Procedures

Section 01 78 00.0000 – Closeout Submittals

Section 01 78 36.0000 – Warranties

Section 03 30 53.0000 – Miscellaneous Cast In Place Concrete

Section 26 05 19.0000 – Low Voltage Electrical Power Conduit and Cables

Section 26 27 00.0000 – Low Voltage Distribution Equipment

Section 31 11 00.0000 – Clearing and Grubbing

Section 31 22 13.0000 – Rough Grading

Section 31 22 16.0000 – Fine Grading

Section 31 23 16.1300 – Trenching

Section 31 23 16.2600 – Rock Removal

Section 31 23 23.1300 – Backfill

Section 31 23 23.2300 – Compaction

Section 32 92 00.0000 – Turf and Grasses

Section 33 01 10.5700 – Disinfection of Water Supply Wells

Author: Richard Fink, P.E. Table of Contents File: Individual Well Drilling BPA 2021 Section 00 01 10.0000 – Page 2 of 2

Section 33 01 10.8100 – Water Supply Well Abandonment

Section 33 11 13.2500 – PE Pipe and Fittings for Water Service Lines

Section 33 11 13.2501 – Drop Pipe

Section 33 11 13.2502 – Well Casing

Section 33 11 13.2503 – PVC Pipe and Fittings for Water Service Lines

Section 33 21 13.1000 – Individual Well House

Section 33 21 13.1001 – Domestic Well Drilling

Section 33 21 13.1015 – Submersible Well Pumps

Section 33 21 13.1081 – Well Screens

Section 33 21 13.1082 – Well Filter Pack

Section 33 21 13.1083 – Domestic Well Development

Section 33 21 13.1084 – Domestic Well Grout

Section 33 21 13.1085 – Domestic Well Test Pumping

Author: Richard Fink, P.E. List of Drawing Sheets File: Individual Well Drilling BPA 2021 Section 00 01 15.0000 – Page 1 of 1

SECTION 00 01 15.0000

LIST OF DRAWING SHEETS

Drawing Title

1 Individual Well Pump Installation

2 Individual Well Pump Installation with Pitless Adapter

3 Individual Well House Exterior

4 Individual Well House Interior

Typical PVC Trench Sections

Typical PE Trench Sections

Typical Electrical Cable Trench Sections

Author: Richard Fink, P.E. Summary of Work File: Individual Well Drilling BPA 2021 Section 01 11 00.0000 - Page 1of 2

SECTION 01 11 00.0000

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. Scattered home sites throughout the State of Oklahoma.

1.03 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Work shall include all or part of the following as specified in the bid schedule:

1. Water well drilling at individual home sites.

2. Installation of pumps, drop pipe, submersible cable.

3. Installation of pressure systems including pressure tanks with appurtenances, buried electrical cable, buried water service line, well pads, and well houses.

Author: Richard Fink, P.E. Summary of Work File: Individual Well Drilling BPA 2021 Section 01 11 00.0000 - Page 2of 2

1.04 ADDITIONAL INFORMATION

A. For technical questions contact:

Richard Fink, P.E.

Assistant Director Division of Sanitation Facilities Construction 701 Market Drive Oklahoma City, OK 73114 Telephone: 405-951-3844 Email: Richard.Fink@ihs.gov

B. For site information contact:

1. Contact the local Sanitation Facilities Construction Field Office issuing the Blanket

Purchase Agreement (BPA) and BPA Callouts.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used)

END OF SECTION

BPA Individual Water Well

Author: Richard Fink, P.E. Unit Prices File: Individual Water Well BPA 2021 Section 01 22 00.0000- Page 1 of 1

SECTION 01 22 00.0000

UNIT PRICES

A. Work covered by this section includes:

1. Method of measurement.

2. Basis of payment.

1.02 PAYMENT

A. Payment is for completed and accepted work, including incidentals, performed in strict accordance with the drawings and specifications.

B. Unless otherwise noted, mobilization and demobilization of equipment are included in the bid price of each item.

C. Payment includes:

1. Mobilization and demobilization of equipment and materials.

2. Labor.

3. Materials.

4. Equipment.

5. Tools.

6. Testing equipment.

7. General requirements in Division 01.

a. Submittals.

b. Record drawings.

c. Temporary facilities and controls.

d. Operation and maintenance manuals.

D. See individual sections for payment details.

PART 2 PRODUCTS (not used).

PART 3 EXECUTION (not used).

Author: Richard Fink, P.E. Submittal Procedures File: Individual Well Drilling BPA 2021 Section 01 33 00.0000 – Page 1 of 2

SECTION 01 33 00.0000

SUBMITTAL PROCEDURES

A. Section includes submittal procedures.

B. Related Requirements:

1. Section 01 78 00.0000 – Closeout Submittals.

PART 2 PRODUCTS (Not Used).

PART 3 EXECUTION

3.01 SUBMITTAL PROCEDURES

A. The required submittals are listed in PART 2 PRODUCTS of each section.

B. Provide one copy of each submittal to the IHS Project Oversight.

1. Copies may be any one of the following:

a. Emailed:

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

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

b. Mailed.

C. Identify each cut sheet or shop drawing with the following information:

1. BPA and BPA Callout number.

2. Supplier.

3. Specification Section number.

D. Submit the following information (if applicable):

1. Manufacturer’s cut sheets: Show compliance with references (e.g. applicable ASTM, AWWA standards).

2. Laboratory results.

3. Any other information necessary to show compliance with the specifications.

Author: Richard Fink, P.E. Submittal Procedures File: Individual Well Drilling BPA 2021 Section 01 33 00.0000 – Page 2 of 2

E. Identify variations from the Contract Documents and product or system limitations that may be detrimental to successful performance of the completed work.

F. Identify and re-submit all changes made since previous submittal.

G. Distribute copies of approved submittals to concerned parties, (i.e. suppliers, sub-contractors).

H. Communicate in writing any inability to comply.

I. Allow three weeks for submittal approval.

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

Author: Richard Fink, P.E. Reference Standards File: Individual Well Drilling BPA 2021 Section 01 42 19.0000 – Page 1 of 2

SECTION 01 42 19.0000

REFERENCE STANDARDS

A. Section includes:

1. Organizations, associations, or appropriate agencies with jurisdiction that have references, standards, laws, or regulations cited in these specifications.

1.02 REFERENCES, STANDARDS, LAWS, OR REGULATIONS CITED IN THESE

SPECIFICATIONS

A. Use latest revision of all references, standards, laws, or regulations.

1.03 LIST OF ORGANIZATIONS, ASSOCIATIONS & AGENCIES

A. National Standards Organizations & Associations

American Association of State Highway and Transportation Officials (AASHTO) 444 North Capital Street NW, Suite 249 Washington DC, 20001

(202) 624-5800 www.aashto.org

American Concrete Institute (ACI) ACI International PO Box 9094 Farmington Hills, Michigan 48333-9094

(810) 848-3700 www.aci-int.org

American Society for Testing and Materials (ASTM) 100 bar Harbor Drive West Conshohocken, Pa 19428-2959

(610) 832-9585 www.astm.org

American Water Works Association AWWA 6666 West Quincy Avenue Denver, CO 80235

(303) 794-7711 www.awwa.org

International Code Council 500 New Jersey Avenue, NW 6th Floor Washington, D.C. 20001

(202) 370-1800 www.iccsafe.org

National Electric Code (NEC) National Fire and Protection Association 1 Batterymarch Park Quincy, MA 02269-9959 1 888 632-2633 www.nec.com

National Electrical Manufacturer’s Association NEMA 1300 North 17th Street Rosslyn, VA 22209

(703) 841-3200 www.nema.org

National Sanitation Foundation, International 789 N. Dixboro Road Ann Arbor, MI 48105

(734) 769-8010 www.nsf.org

Plastics Pipe Institute 105 Decker Court Suite 825 Irving, TX 75062

(469) 499-1044 www.plasticpipe.org

Underwriters’ Laboratories, Inc. UL 333 Pfingston Road Northbrook, IL 60062

(847) 272-8800 www.ul.com

Author: Richard Fink, P.E. Reference Standards File: Individual Well Drilling BPA 2021 Section 01 42 19.0000 – Page 2 of 2

B. Federal Agencies

Environmental Protection Agency (EPA) Region 6 1201 Elm Street Dallas, TX 75270 www.epa.gov

Occupational Health and Safety Administration Region 6 (OSHA) 525 Griffin Street, Suite 602 Dallas, TX 75202 www.osha.gov

C. State Agencies

Oklahoma Department of Environmental Quality 707 N. Robinson P.O. Box 1677

OKC, OK 73102-6010

www.deq.state.ok.us

Oklahoma Water Resources Board 3800 North Classen Blvd.

Oklahoma City, OK 73118 405-530-8800 www.owrb.ok.gov

D. Tribal Organizations

1. See Section 01 11 00.0000--Summary of Work for appropriate tribal contact regarding tribal laws and regulations (if any).

Author: Richard Fink, P.E. Quality Assurance File: Individual Well Drilling BPA 2021 Section 01 43 00.0000 – Page 1 of 2

SECTION 01 43 00.0000

QUALITY ASSURANCE

1. Pre-requisites and procedures to assure the quality of construction.

1. Section 01 78 36.0000 – Warranties.

1.02 QUALITY ASSURANCE

A. Perform work under the direction of personnel licensed in the state in which construction is located and where licensing of the trade is regulated by the state including the following:

1. Plumbing.

2. Well drilling.

3. Well pump installation.

4. Well abandonment.

5. Rock blasting.

6. Electrical work.

B. Control Of Installation:

1. Perform work in accordance with the specifications.

2. Comply fully with manufacturers’ instructions.

C. If manufacturers’ instructions conflict with contract documents, request clarification from the

Contracting Officer and IHS Project Oversight before proceeding.

D. Correct defective work to conform to the applicable specification.

E. Manufacturer’s Field Services:

1. Provide reports of observations and documentation of workmanship to the IHS Project Oversight within 30 calendar days after manufacturers’ field services are provided.

Author: Richard Fink, P.E. Quality Assurance File: Individual Well Drilling BPA 2021 Section 01 43 00.0000 – Page 2 of 2

1.03 DELIVERY, STORAGE, AND HANDLING

A. Inspect materials for acceptability when delivered to the site.

B. Store and handle materials to prevent damage.

1.04 WARRANTY

A. Provide a minimum one-year warranty for all materials and labor, covering defects in the materials or deficiencies resulting from contractor installation.

B. Provide additional warranties as required by other sections.

PART 2 PRODUCTS (not used).

PART 3 EXECUTION (not used).

Author: Richard Fink, P.E. Closeout Procedures File: Individual Well Drilling BPA 2021 Section 01 77 00.0000 – Page 1 of 1

SECTION 01 77 00.0000

CLOSEOUT PROCEDURES

A. Section includes information on closeout procedures and site cleanup.

1.02 ADMINISTRATIVE REQUIREMENTS

A. Final Inspection:

1. Send written certification that work is complete and ready for Final Inspection to the IHS

Project Oversight.

2. The IHS Project Oversight shall schedule the Final Inspection at a day and time convenient to all parties.

3. Provide Warranties and Record Drawings at the Final Inspection.

1.03 SITE CONDITIONS

A. Complete clean up before the Final Inspection.

B. Remove waste and erosions control devices, surplus materials, rubbish, and construction facilities from the site.

C. Punch List:

1. The IHS Project Oversight shall provide a letter to the Contractor and Contracting Officer listing the deficiencies noted during the Final Inspection

2. Correct the deficiencies in conformance with the Specifications and Contract Drawings.

3. Final payment will be withheld until all deficiencies are corrected

PART 2 PRODUCTS (not used)

PART 3 EXECUTION (not used)

Author: Richard Fink, P.E. Closeout Submittals File: Individual Well Drilling BPA 2021 Section 01 78 00.0000 – Page 1 of 3

SECTION 01 78 00.0000

CLOSEOUT SUBMITTALS

1. The requirements for closeout submittals including:

a. Record drawings (as-builts)

b. Warranty information

c. General operation and maintenance information (if applicable)

1. Section 01 33 00.0000 – Submittal Procedures.

2. Section 01 77 00.0000 – Closeout Procedures.

3. Section 26 05 19.0000 – Low Voltage Electrical Power Conduit and Cables.

4. Section 26 27 00.0000 – Low-Voltage Distribution Equipment.

5. Section 33 01 10.8100 – Water Supply Well Abandonment.

6. Section 33 11 13.2500 – PE Pipe and Fittings for Water Service Lines.

7. Section 33 11 13.2501 – Drop Pipe.

8. Section 33 11 13.2503 – PVC Pipe and Fittings for Water Service Lines.

9. Section 33 21 13.1000 – Individual Well Houses.

10. Section 33 21 13.1001 – Domestic Well Drilling.

11. Section 33 21 13.1015 – Submersible Well Pumps.

12. Section 33 21 13.1081 – Well Screens.

13. Section 33 21 13.1082 – Well Filter Pack.

File: Individual Well Drilling BPA 2021 Section 01 78 00.0000 – Page 2 of 3

1.02 DELIVERY

A. Provide all closeout submittals meeting this specification and specific requirements of each section.

1. Closeout submittals shall be received in required form.

2. Closeout submittals shall be received before final payment is made.

1.03 DEFINITIONS

A. Record Drawing’s drawing showing:

1. The actual installation of facilities.

2. Changes from the plans with enough detail so that the facility can readily be located.

B. Ties: Measurements from permanent easily located objects to an installed object.

3.01 RECORD DRAWINGS

A. Provide record data in one of the following manners:

1. On a set of project drawings, neatly draw swing tie measurements and changes.

2. On separate 8½ by 11 sheets, neatly draw site sketches, structure sketches, etc., indicating the necessary information.

B. Provide three swing tie measurements to all buried utility objects that may need to be located in the future, including the following:

1. Gate valves.

2. Water main fittings.

3. Utility crossings.

C. Provide offset measurements and depths for buried utilities (e.g. water main) installed parallel to roads.

1. Elevations of pipe entering and leaving structures.

2. Other elevations indicated on profiles.

D. Provide installed bid schedule items quantities for individual facilities on 8½ X 11 sheets.

1. The IHS Project Oversight may supply standard IHS forms for use by the Contractor.

File: Individual Well Drilling BPA 2021 Section 01 78 00.0000 – Page 3 of 3

3.02 WARRANTIES

A. Submit all applicable warranty information regarding the materials installed in conformance with Section 01 78 36.0000 – Warranties.

B. Minimum warranty information is listed in Section 01 43 00 – Quality Assurance.

BPA Indivdiual Well Drilling

Author: Richard Fink, P.E. Warranties File: Individual Well Drilling BPA 2021 Section 01 78 36.0000

SECTION 01 78 36.0000

WARRANTIES

1. Preparation and submittal.

2. Time and schedule of submittals.

1. Section 01 78 00.0000 - Closeout Submittals.

2. Section 33 21 13.1015– Submersible Well Pumps.

3.01 PREPARATION OF SUBMITTALS

A. Obtain warranties from responsible subcontractors, suppliers, and manufacturers within ten business days after completion of the application work or installation of the applicable item.

B. Unless otherwise modified by the IHS Project Oversight, the warranty date is the Date of Substantial Completion.

C. Verify that documents contain full information required.

D. Specifically identify the warranty expiration date for each submittal. Retain warranties for the time specified for that submittal.

E. Submit under provisions of Section 01 78 00 - Closeout Submittals.

3.02 TIME OF SUBMITTAL

A. Submit documents at the Final Insepection.

B. List the date of acceptance as the beginning of the warranty period.

Author: Richard Fink, P.E. Miscellaneous Cast –In-Place Concrete File: Individual Water Well BPA 2021 Section 03 00 53.0000

SECTION 03 30 53.0000

MISCELLANEOUS CAST-IN- PLACE CONCRETE

A. This section includes provisions for miscellaneous cast-in-place concrete.

1. Section 32 31 26.0000 – Wire Fence and Gate.

2. Section 33 31 00.0000 – Individual Sanitary Sewerage Piping.

3. Section 33 36 13.1300 – Concrete Utility Septic Tank.

4. Section 33 36 33.0100 – Septic Tank Gravel Absorption Dispersal Field.

5. Section 33 36 33.0200 – Septic Tank Manufactured Media Dispersal Field.

6. Section 33 38 26.0000 – Utility Septic Tank Sewerage Lagoon.

1.02 PRICE AND PAYMENT PROCEDURE

A. The cost of the concrete is incidental to the item installed.

1. There is no separate payment for the concrete.

1.03 REFERENCES

A. ACI 301 – Specifications for Structural Concrete.

B. ASTM C33 – Standard Specification for Concrete Aggregates.

C. ASTM C94 – Standard Specification for Ready Mix Concrete.

D. ASTM C144 – Standard Specification for Mortar Aggregate.

E. ASTM C150 – Standard Specification for Portland Cement.

F. ASTM A185 – Welded Steel Wire Fabric, Plain for Concrete Reinforcement.

G. ASTM A615 – Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

1.04 QUALITY ASSURANCE

A. Obtain cement and aggregate from the same source for all work.

B. Perform work in accordance with ACI 301.

File: Individual Water Well BPA 2021 Section 03 00 53.0000

1.05 DELIVERY, STORAGE, AND HANDLING

A. Delivery:

1. Ready Mix Concrete:

a. Deliver and mix in accordance with ASTM C94.

B. Storage:

1. Prevent deterioration or intrusion of foreign matter.

PART 2 PRODUCTS

2.01 MATERIALS

A. Cement: ASTM C150, Portland Cement Type – I.

B. Aggregates shall be clean, hard, tough, water sound and free of deleterious substances.

C. Mixing Water

1. Use potable water unless approved by IHS Project Oversight .

D. METAL REINFORCEMENT

1. Rebar: Conforming to ASTM A615

2. Welded Wire Fabric: Conform to ASTM A185

2.02 QUALITY CONTROL

A. Provide a compressive strength of 2,500 psi at 28 days unless otherwise noted on the Drawings.

3.01 PREPARATON

A. Forms:

1. Conform to shapes, lines and dimensions of members as called for on the plans.

2. Sufficiently tight to prevent leakage of concrete.

3. Properly brace and tie.

B. Remove excess water before concrete is placed.

C. Moisten subgrade before placing concrete.

File: Individual Water Well BPA 2021 Section 03 00 53.0000

D. For job mixed concrete:

1. Mix the materials until they are uniformly distributed.

3.02 INSTALLATION

A. PLACING CONCRETE

1. Place concrete in one continuous operation.

2. Remove supporting forms and shoring after members have acquired sufficient strength to support their weight and imposed loads safely.

3. Concrete temperature shall not be less than 45 degrees Fahrenheit at the time of placement.

a. Do not heat aggregates and water used for mixing to a temperature exceeding 120 degrees Fahrenheit.

3.03 PROTECTION

1. Maintain concrete temperature of not less than 45 degrees Fahrenheit, or more than 70 degrees Fahrenheit, for a period of four days.

2. Do not add chemical or other foreign material to the concrete mix.

Author: Richard Fink, P.E. Low Voltage Electrical Power Conduit and Cables File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 1 of 6

SECTION 26 05 19.0000

LOW VOLTAGE ELECTRICAL POWER CONDUIT AND CABLES

A. This Section includes cables and associated connectors, splices, and terminations for wiring systems rated 600 V and less used for water well pressure systems.

B. Related Requirements

2. Section 01 78 00.0000 – Closeout Submittals.

3. Section 01 43 00.0000 – Quality Assurance.

4. Section 31 11 00.0000 – Clearing and Grubbing.

5. Section 31 22 13.0000 – Rough Grading.

6. Section 31 22 16.0000 – Fine Grading.

7. Section 31 23 16.1300 – Trenching.

8. Section 31 23 23.1300 – Backfill.

1.02 MEASUREMENT AND PAYMENT

A. Submersible Cable.

1. Measurement: Vertical feet of cable installed.

2. Payment: Shall be full compensation for the following:

a. Provision and installation of materials including the following:

1) Electrical cable.

2) Connections.

3) Wire ties.

4) Torque Areestor.

5) Appurtenances.

File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 2 of 6

b. Other work:

1) Testing for conductivity.

2) Record drawings.

B. Buried Cable.

1. Measurement: Linear feet of cable installed.

a. Earthwork including all the following:

1) Excavation and trenching.

2) Bedding.

3) Haunching.

4) Backfill.

5) Compaction.

6) Clearing and grubbing.

7) Rough and final grading.

8) Site restoration.

b. Provision and installation of materials including the following:

1) Electrical cable.

2) Connections.

3) Conduit with fittings.

4) Appurtenances.

c. Other work:

1) Testing for conductivity.

2) Record drawings.

File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 3 of 6

C. 1” Rigid PVC Rigid Electrical Conduit Pipe.

1. Measurement: Linear feet of pipe of the size listed in the bid schedule measured along the centerline of the pipe.

1) PVC pipe.

2) Fittings.

3) Appurtenances.

D. Imported Bedding.

1. Measurement: Cubic Yard.

1) Placing of imported bedding material

2) Compaction.

File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 4 of 6

1) Imported sand.

A. National Electric Code (NEC).

B. National Electrical Manufacturers Association Standard 250.

C. UL Standard 83 – Standard for Thermoplastic-Insulated Wires and Cables.

D. UL Standard 493 – Standard for Thermoplastic-Insulated Underground Feeder and

BranchCircuit Cables.

1.04 SUBMITTALS

A. Conform to Section 01 33 00.0000 – Submittal Procedures.

B. Product Data:

1. Submersible cable.

2. Buried cable.

3. Conduit, if necessary.

4. Sand/Imported Bedding, if necessary.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Houston Wire & Cable Company

B. General Cable Corporation

C. Southwire Company.

D. Manufacturers meeting the requirements of this specification shall be given equal consideration.

2.02 MATERIALS

A. Submersible Cable

1. 10-gauge (minimum), or, as per IHS Project Oversight.

a. 2-wire or 3-wire both 120V & 240V with neutral carried to the breaker box.

b. Type UL 83, wire.

File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 5 of 6

1) THWN, TW, or THW.

2) Annealed copper.

a) 0.047-inch moisture resisting PVC insulation for mechanical protection.

c. Size to limit the overall voltage drop from the electrical service to the pump motor to 3 percent including the buried cable.

d. Provide nylon cable ties to attach the electrical wire to the drop pipe.

B. Buried Cable:

1. UF-B for direct burial, or approved equal.

2. 10-gauge (minimum) 2-wire (+ neutral), or, as per IHS Project Oversight.

3. Sized to limit the total voltage drop from the electrical service to the pump motor to 3 percent including the submersible cable.

C. Electrical Conduit:

1. 1” Rigid PVC electrically rated conduit to protect the buried cable, as per IHS Oversight.

D. Imported Sand:

1. Follow the requirements of Section 31 23 23.1300 Backfill.

3.03 INSTALLATION

A. Submersible Pump Cable

1. Securely attached the submersible pump cable to the drop pipe every 10 feet using nylon cable ties, or approved connectors.

2. Splices in the pump cable are not allowed.

3. Well cable is to be foamed, silicone, or otherwise protected from allowing gasses from the well migrating to exposed electrical wiring.

B. Buried Cable:

1. Install type UF-B direct burial electric cable to provide power for the submersible pump.

File: Individual Well Drilling BPA 2021 Section 26 05 19.0000 - Page 6 of 6

2. Connect the underground wire to the submersible pump cable with a NEMA rated (1R indoor, 3R outdoor) junction box located in the well house.

3. Provide rigid conduit through and under the well house slab.

4. Enclose all wiring within the pump house in 3/4-inch flexible conduit.

5. Make proper connection to the circuit breaker and pump control boxes.

6. Provide sufficient slack wire in the trench to prevent separation of the cable by settlement of the trench.

7. Bury cable a minimum depth of 18 inches.

3.04 PROTECTION: CABLE PROTECTORS AND TORQUE ARRESTORS

A. Submersible Cable.

1. Install cable protector-centering devices at the pump and every 50 feet above the pump to center the drop pipe in the casing.

B. Buried Cable.

1. If trench has stones larger than 3/4-inch or is in rock:

a. Over excavate the trench 6 inches.

b. Encase the cable with six inches (minimum) of sand, or IHS Oversight approved bedding on all sides before backfilling the trench.

3.05 CLOSEOUT ACTIVITIES

A. Provide the IHS Project Oversight with record drawings.

1. Conform to Section 01 78 00.0000 – Closeout Submittals.

Author: Richard Fink, P.E. Low Voltage Distribution Equipment File: Individual Well Drilling BPA 2021 26 27 00 - Page 1 of 5

SECTION 26 27 00.0000

LOW-VOLTAGE DISTRIBUTION EQUIPMENT

1. Wiring, conduit, electrical outlet, and pump controls for individual well houses.

B. Related requirements:

2. Section 33 21 13.1000 – Individual Well House.

A. Well house pressure switch controls.

1. Measurement: Each.

1) Pressure switch

2) Electrical wiring.

3) Heat tape.

4) Rigid and flexible conduit.

B. 3-Wire control box controls.

1) Controller with start and run capacitor.

File: Individual Well Drilling BPA 2021 26 27 00 - Page 2 of 5

C. Electrical outlet.

1) Twin plug receptacle.

5) While-in-use electrical cover.

D. Breaker Box

1) Breaker box (1R, or 3R).

2) Circuit breakers.

E. Motor Protection Device

1) Motor Protection Device.

A. Reference Standards: Use current standards

1. National Electrical Manufacturer Association (NEMA) Standard 250 Enclosure guide.

2. National Electric Code (NEC).

File: Individual Well Drilling BPA 2021 26 27 00 - Page 3 of 5

A. Product Data:

1. Conform to Section 01 33 00.0000 – Submittal Procedures.

a. Pressure switch.

b. 3-wire control box.

c. Receptacle.

d. Circuit breaker panel.

e. Motor protection device.

2.01 MANUFACTURED UNITS

A. Manufacturers.

1. Pressure switch:

a. Schneider Electric

b. Substitution Limitations: Other manufacturer’s products shall be considered.

2. 3-wire control box and motor protection device:

a. Franklin-Electric

3. Breaker box:

a. Schneider Electric

4. Receptacle:

a. Taymac-Hubbell

B. Materials

1. Pressure switch:

a. 30 – 50 psi

File: Individual Well Drilling BPA 2021 26 27 00 - Page 4 of 5

b. Square D, Pumptrol, class 9013, FSG-2, or approved equal.

2. 3-Wire Controller:

a. Franklin-Electric, Model 280 10X 4915, or approved equal.

b. The X in the above is based on the voltage and horsepower required. See the FE AIM manual.

3. Motor Protection Device:

a. Motor Protection Device to protect against rapid cycling, dry well, and abnormal voltage conditions

b. Motor Protection Device to interrupt power if line load drops below preset conditions.

1) Franklin-Electric 5800020610 1/3 – 1.5 HP, single phase motor protector, or approved equal.

2) Pump Saver Plus (233/111P), or approved equal.

4. Breaker box:

a. NEMA 1R (for housed locations), 3R (for outdoor locations).

b. 100 amp rated.

c. 8 space, 16 circuit.

d. Square D, or approved equal.

5. Electrical Outlet:

a. 110-volt dual receptacle (1-gang).

b. Outdoor rated, vertical-mount, while-in-use weatherproof cover (Taymac, or equal).

6. Heat tape with thermostat control: HSTAT series silicone heating tape, 6’ x 0.5”, 120 with thermostat control, or approved equal.

7. 5/8” x 6’ copper grounding rod, as required.

File: Individual Well Drilling BPA 2021 26 27 00 - Page 5 of 5

3.01 INSTALLATION

A. Wiring:

1. Provide a complete wiring installation including the following:

a. Flexible conduit to cover all exposed wiring within the well house.

b. Rigid conduit as a sleeve in the concrete well slab.

2. Conform to local power company regulations and applicable state and local codes.

B. Circuit Breaker:

1. Power to each unit shall be controlled with a manually reset circuit breaker.

a. Place breakers in existing service panel in the home where possible.

b. Otherwise, if the breaker box is placed on a power pole near the well.

1) Enclose in applicable (outdoor/3R), NEMA-rated breaker box.

2) Provide separate manual reset breakers for the pump and 110V dual receptacle.

3) Breaker shall be sized to meet NEC requirements.

c. Otherwise, if the breaker box is placed in the well house.

1) Enclose in applicable (indoor/1R), NEMA-rated breaker box.

2) Provide separate manual reset breakers for the pump and 110V dual receptacle.

3) Breaker shall be sized to meet NEC requirements.

2. Where well casing or surface casing is PVC, install a minimum 5/8 inch by 6 foot copper ground rod with clamp.

C. Motor Protection Device:

1. Motor Protection Device shall

2. be installed on low-production wells (defined as < 5 gpm).

D. Foam/Silicon sealing of the junction boxes:

1. The first electrical splice between the motor and the first junction box shall be sealed with electrical foam or silicon such that the moisture from the well is prevented from access to the bare electrical wire, as per the NEC.

Author: Richard Fink, P.E. Rough Grading File: Individual Well Drilling BPA 2021 Section 31 22 13.0000 - Page 1 of 1

SECTION 31 22 13.0000

ROUGH GRADING

PART 1 - GENERAL

1. Rough and finished site grading of areas disturbed during construction.

1. Section 31 23 16.1300 – Trenching

A. Work is incidental to buried utilities.

B. No separate payment shall be made.

PART 2 - PRODUCTS (Not applicable)

PART 3 - EXECUTION

3.01 ROUGH GRADING

A. Grade site to prevent surface water from flowing into excavations and trenches.

B. Maintain existing drainage.

C. Remove any water accumulated in the excavation by pumping or other approved method.

D. If sub-grade is altered, restore to its proper bearing capacity at Contractor’s expense.

Author: Richard Fink, P.E. Fine Grading File: Individual Well Drilling BPA 2021 32 22 16.0000 - Page 1 of 1

SECTION 31 22 16.0000

FINE GRADING

PART 1 - GENERAL

1. Fine site grading of areas disturbed during construction.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.01 FINE GRADING

A. Grade after all structures and piping are installed.

B. Grade site to true grades as shown on the plans.

C. Ensure that drainage is away from structures.

D. Dress and trim all slopes for a uniform and smooth appearance.

Author: Richard Fink, P.E. Trenching File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 1 of 7

SECTION 31 23 16.1300

TRENCHING

1. Trenching necessary for the construction of the facilities as indicated on the drawings including, but not limited:

1) Water service lines.

2) Electric conduit and electrical cable lines.

1. Section 31 11 00.0000 – Clearing and Grubbing.

2. Section 31 22 13.0000 – Rough Grading.

3. Section 31 22 16.0000 – Fine Grading.

4. Section 31 23 16.1300 – Trenching.

5. Section 31 23 16.2600 – Rock Removal.

6. Section 31 23 23.1300 – Backfill.

7. Section 31 23 23.2300 – Compaction

A. Trenching is incidental to installation of buried utilities.

A. Reference latest manual revision or ASTM standard.

B. ASTM D698 – Test Method for Laboratory Compaction Characteristic of Soil Using

Standard Effort.

C. ASTM D1556 – Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method.

D. ASTM D2922 – Test Method for Density of Soil and Soil Aggregate in Place by Nuclear

Methods.

File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 2 of 7

E. ASTM D2487 – Classification of Soils for Engineering.

F. ASTM D3017 – Test Method for Water Content of Soil and Rock in Place by Nuclear

1.04 SUBMITTALS (if required)

A. Barricades and lights

B. Shoring

1.05 DEFINITIONS

A. Soil Materials as summarized in the following table and defined in ASTM D2321 and ASTM

D2487.

Description and Comparison of Soil Material Classifications

ASTM D2321 ASTM D2487

Class Type

USCS

Group Symbol Description

IA Manufactured aggregates: ¼ to 1 ½ inch open graded, clean.

* None Closest to “Poorly graded gravel (GP)”

IB Manufactured aggregates: ¼ to 1 ½ inch dense graded, clean.

* None Closest to “Poorly graded gravel with sand (GP)”

II

Coarse sands and gravels with maximum particle size of 1 ½ inch clean.

GW Well-graded gravels and gravel-sand mixtures; little or no fines.

GP Poorly graded gravels and gravel sand mixtures little or no fines.

SW Well-graded sands and gravelly sands; little or no fines.

SP Poorly graded sands and gravelly sands; little or no fines Coarse sands and gravels with maximum particle size of 1 ½ inch, borderline clean.

GW-GC

SP-SM

Etc.

Sands and gravels which are borderline between clean and with fines

III

Fine sand and clayey gravels.

GM Silty gravels, gravel-sand-silt mixtures.

GC Clayey gravels, gravel-sand-clay mixtures SM Silty sands, sand-silt mixtures SC Clayey sands, sand-clay mixtures

IV

Fine grained soils (inorganic)

ML Inorganic silts and very fine sands, rock flour, silty or clayey fine sands, silts with slight plasticity

CL Inorganic clays of low to medium plasticity, gravely clays, sandy clays, silty clays, lean clays

MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts

CH Inorganic clays of high plasticity, fat clays.

V

Organic soils OL Organic silts and organic silty clays of low plasticity

OH Organic clays of medium to high plasticity, organic silts PT Peat and other high organic soils

* USCS system is limited to naturally occurring soils. Manufactured aggregates not covered.

File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 3 of 7

3.01 GENERAL

A. Conform to recommended safety standards, identified in OSHA 1910 and 1926.

B. No workers may enter any trench or excavation without the prior approval of the Competent Person on site.

C. Obtain all permits from appropriate road agency for construction within road right of way.

D. Repair damage resulting from settlement, slides, cave-ins, water pressure, and other causes.

E. Provide adequate signs, barricades, fences, and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.

1. Placement of construction signs and barricades shall conform to the “Manual on Uniform Traffic Control Devices.”

2. Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise.

3. Barricades

a. White or with reflective paint to increase their visibility at night.

b. Commercial grade.

4. Minimize obstruction to traffic and inconvenience to the public and residents near the work.

F. Road, Driveway, and Sidewalk Crossing:

1. Comply with all construction and material requirements of roadway authorities having jurisdiction.

2. Maintain one open lane of traffic at all times.

3.02 PREPARATION

A. Layout and Staking:

1. Lines staked by the IHS Project Oversight.

2. Notify the IHS Project Oversight at least three business days in advance of the times and places that stakes and benchmarks shall be required.

3. Preserve stakes and benchmarks when set. Re-staking for disturbed or displaced stakes at the Contractor’s expense.

B. Close no road or street without permission of the proper authority.

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C. Keep fire hydrants accessible.

D. Insure that gutters, sewer inlets, drainage, and irrigation ditches are kept functional.

3.03 PROTECTION OF EXCAVATION

A. Provide suitable sheathing, shoring, and/or bracing to:

1. Prevent excavation from caving.

2. Provide safe working conditions to protect workers and property.

B. Repair damage resulting from settlement, slides, cave-ins, and water infiltration at

Contractor’s expense.

3.04 GENERAL EXCAVATION

A. Excavate by open cut method unless otherwise approved by the IHS Project Oversight or as required by applicable encroachment permits.

B. Remove trees and stumps from excavation and site according to Section 31 11 00 - Clearing and Grubbing.

C. Remove and stockpile existing topsoil and suitable backfill.

D. Dispose of unsuitable backfill at the location shown in the Drawings or as approved by the IHS Project Oversight.

E. Dispose of excess material, including rock, broken concrete and bituminous materials, debris, at the location shown in the Drawings or as approved by the IHS Project Oversight.

3.05 PIPE LINE EXCAVATION

A. Install facilities as staked unless otherwise approved by IHS Project Oversight.

B. Maintain surface drainage away from trenching or excavation.

1. Conform to Section 31 22 13 - Rough Grading.

3.06 TRENCHING

A. Bottom width: No less than 12 inches or more than 24 inches.

B. Remove large stones, ledge rock, and boulders to provide a 4-inch minimum clearance for all pipes.

C. Keep walls as nearly vertical as soil conditions permit below the top of pipe.

D. Trench width above pipe may be as wide as required for shoring and sheeting, and proper installation of work.

E. Ensure trench is on proper alignment and center pipe within the trench.

File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 5 of 7

F. Depth: Provide minimum cover identified in the specifications, or to depths shown on drawings.

G. Accurately shape bottom of trench to provide uniform bearing and support for pipe.

H. Excavate bell holes and depressions for joints after bottom of trench is graded.

1. Excavate bell holes and depressions to the minimum length, depth, and width required to make the particular joint.

3.07 REMOVAL OF NUISANCE WATER

A. Remove nuisance water entering the trenches. Nuisance water that can be removed through the use of sump or trash pumps is not considered dewatering.

B. Keep trenches free from water until the facilities are in place, sealed against the entrance of water, and backfill has been placed and compacted above the water level.

3.08 LOCATE EXISTING UTILITIES

A. Locate all existing underground utilities.

1. Utilize state “dig-safe,” “OKIE” or “one-call” hotlines.

2. Contact all other utility owners not covered by the state “dig safe” hotlines.

3.09 UTILITY CONFLICTS

A. Protect existing utilities from damage during excavation and backfilling operations.

B. Provide temporary support for existing water, gas, telephone, power, or other utility services that cross the trench, until backfilling operations have reached the elevation of the utility being crossed.

1. Compact backfill to 95% of Standard Proctor Density under disturbed utilities.

2. Repair or replace any damaged existing utilities at Contractor’s expense.

C. Pipe separation.

1. Horizontal Separation from existing or proposed mains:

a. Maintain a 10-foot horizontal separation (O.D. to O.D.) for the following:

1) Water mains

2) Sewer mains

3) Storm sewers

4) Raw water lines

5) Oil and gas lines

File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 6 of 7

6) Buried electric cables

b. Maintain a 15-foot horizontal separation for the following:

1) All parts of septic tanks

2) Absorption fields

3) Any other sewage treatment and disposal systems.

c. Maintain a 50-foot horizontal separation from any gas storage tank.

d. Any deviation shall be approved in advance by the IHS Project Oversight and permitting authority.

2. Vertical Separation

a. Vertical crossing with the water main above the sewer main:

1) Maintain a minimum 24-inch vertical separation (O.D. to O.D.) for crossing mains.

2) Lay pipe with joints equidistant from the point of crossing.

b. Vertical crossing with the water main below the sewer main.

1) Maintain a minimum 24-inch vertical separation (O.D. to O.D.) for crossing mains.

2) No sewer line joint closer than 9 feet from the water line.

3) Provide adequate support to prevent damage to the water main.

c. If it is impossible to meet any of the above separation distances and deviations, the following method shall be adhered to:

1) Sewer main shall be constructed to water main pressure pipe standards, and successfully pass a 150-psi pressure test prior to backfilling.

D. Water and sewer service crossing and parallel installation.

1. Maintain a 30-inch horizontal separation from water and sewer services.

2. Maintain a 12-inch vertical separation for crossing water and sewer services.

3. Water service line splices or joints shall not be permitted within 10 feet of a sewer line crossing.

File: Individual Well Drilling BPA 2021 Section 31 23 16.1300 - Page 7 of 7

3.10 MOVING FENCES AND MINOR STRUCTURES

A. Remove and reset culverts, drainage pipes, or other minor structures that fall within the alignment of the new construction. Restore to their original location and grade.

B. Visit the project site and determine actual conditions with regard to the existence of old car bodies, abandoned houses, fences, driveways, trees, stumps, brush, sidewalks, approaches, and other miscellaneous obstacles to construction.

1. No separate payment shall be made for the removal or replacement of these items.

Author: Richard Fink, P.E. Rock Removal File: Individual Well Drilling Lagoon BPA 2021 Section 31 23 16.2600 - Page 1 of 2

SECTION 31 23 16.2600

ROCK REMOVAL

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

B. Related Requirements

1. Section 31 23 16.1300 – Trenching

2. Section 31 23 23.1300 - Backfill

A. Rock

1. Measurement: Linear feet of trench in which rock was removed measured along the centerline of the pipe.

2. Payment: Shall be full compensation for:

a. Earth Work:

1) Ripping operations.

2) Jackhammering.

3) Over excavation of trench.

4) Removal of rock from site.

B. Imported Backfill

1. Measurement: Linear feet imported backfill installed measured along the centerline of the pipe.

2. Payment: Shall be full compensation for:

a. Earth Work:

1) Backfilling.

2) Compaction.

b. Provision and installation of materials:

1) Imported backfill

Author: Richard Fink, P.E. Rock Removal File: Individual Well Drilling Lagoon BPA 2021 Section 31 23 16.2600 - Page 2 of 2

1.03 DEFINITION

A. Solid Rock

1. Large masses of rock which, in the opinion of the IHS Project Oversight, cannot be excavated without drilling, blasting, ripping equipment or other specialized equipment.

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. Rip with a dozer and excavate.

3. Jack hammer and excavate.

3.02 RESPONSIBILITIES

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

3.03 EXCAVATION, RIPPING, AND JACK-HAMMERING

A. Excavate and/or rip to a minimum 6 inches deeper than the pipe invert.

B. Provide 6 inches clearence from rock on each side of pipe.

C. Backfill with imported bedding materials to a depth of 6 inches above the top of pipe.

D. Refill remaining trench with material in accordance with Section 31 23 23.1300 – Backfill.

1. Use existing soil to the greatest extent possible.

E. END OF SECTION

Author: Richard Fink, P.E. Backfill

File: Individual Well Drilling BPA 2021 Section 31 23 23.1300 - Page 1 of 6

SECTION 31 23 23.1300

BACKFILL

a. Backfill necessary for the construction of the facilities as indicated on the plans including, water service lines, electrical cables, and other structures.

a. Section 31 22 13.000 – Rough Grading.

b. Section 31 22 1600 – Fine Grading.

c. Section 31 23 16.1300 – Trenching.

d. Section 31 23 16.2600 – Rock Removal.

A. Backfilling is incidental to installation of buried utilities.

A. Reference latest manual revision or ASTM standard.

B. Manual on Uniform Traffic Control Devices.

C. ASTM D698 – Test Method for Laboratory Compaction Characteristic of Soil Using Standard

Effort.

D. ASTM D1556 – Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone

E. ASTM D1557 – Test Method for Laboratory Compaction Characteristics of Soil Using

Modified Effort.

F. ASTM D2922 – Test Method for Density of Soil and Soil Aggregate in Place by Nuclear

G. ASTM D2487 – Classification of Soils for Engineering.

H. ASTM D3017 – Test Method for Water Content of Soil and Rock in Place by Nuclear

File: Individual Well Drilling BPA 2021 Section 31 23 23.1300 - Page 2 of 6

A. Conform to Section 01 33 23 – Shop Drawings, Product Data, and Samples.

B. Barricades and lights.

C. Shoring.

D. Imported bedding material.

USCS

Group Symbol Description

IA Manufactured aggregates: ¼ to 1 ½ inch open graded, clean.

* None Closest to “Poorly graded gravel (GP)”

IB Manufactured aggregates: ¼ to 1 ½ inch dense graded, clean.

* None Closest to “Poorly graded gravel with sand (GP)”

II

Coarse sands and gravels with maximum particle size of 1 ½ inch clean.

GW Well-graded gravels and gravel-sand mixtures;

little or no fines.

GP Poorly graded gravels and gravel sand mixtures little or no fines.

SW Well-graded sands and gravelly sands; little or no fines.

SP Poorly graded sands and gravelly sands; little or no fines

Coarse sands and gravels with maximum particle size of 1 ½ inch, borderline clean.

GW-GC

SP-SM

Etc.

Sands and gravels which are borderline between clean and with fines

III

Fine sand and clayey gravels.

GM Silty gravels, gravel-sand-silt mixtures.

GC Clayey gravels, gravel-sand-clay mixtures SM Silty sands, sand-silt mixtures SC Clayey sands, sand-clay mixtures

IV

Fine grained soils (inorganic)

ML Inorganic silts and very fine sands, rock flour, silty or clayey fine sands, silts with slight plasticity

CL Inorganic clays of low to medium plasticity, gravely clays, sandy clays, silty clays, lean clays

MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts

CH Inorganic clays of high plasticity, fat clays.

V

Organic soils

OL Organic silts and organic silty clays of low plasticity

OH Organic clays of medium to high plasticity, organic silts

File: Individual Well Drilling BPA 2021 Section 31 23 23.1300 - Page 3 of 6

PT Peat and other high organic soils

* USCS system is limited to naturally occurring soils. Manufactured aggregates not covered.

2.01 BEDDING, HAUNCHING AND INITIAL BACKFILL MATERIAL

A. Class I, Class II or Class III, utilized in accordance with restrictions described in Part 3 - Execution.

A. Conform to recommended safety standards including OSHA 1910 and 1926.

B. No workers may enter any trench or excavation without the prior approval of the Competent Person on site.

C. Obtain all permits from appropriate road agency for construction within road right of way.

D. Repair damage resulting from settlement, slides, cave-ins, water pressure, and other causes.

E. Provide adequate signs, barricades, fences, and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.

1. Placement of construction signs and barricades shall conform to the “Manual on Uniform Traffic Control Devices.”

2. Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise.

3. Barricades

a. White or with reflective paint to increase their visibility at night.

b. Commercial grade.

4. Minimize obstruction to traffic and inconvenience to the public and residents near the work.

F. Road, Driveway, and Sidewalk Crossing:

1. Comply with all construction and material requirements of roadway authorities having jurisdiction.

A. Close no road or street without permission of the proper authority.

B. Keep fire hydrants accessible.

File: Individual Well Drilling BPA 2021 Section 31 23 23.1300 - Page 4 of 6

C. Ensure that gutters, sewer inlets, drainage, and irrigation ditches are kept functional.

3.03 PROTECTION OF EXCAVATION

A. Provide suitable sheathing, shoring, and/or bracing to:

1. Prevent excavation from caving.

2. Provide safe working conditions to protect workers and property.

B. Repair damage resulting from settlement, slides, cave-ins, and water infiltration at

Contractor’s expense.

3.04 BEDDING

A. If existing soil cannot provide uniform, stable bearing support, over-excavate 6 inches below bottom of pipe or structure.

B. Embedment and the backfill up to 6 inches above the pipe crown shall be done in the presence of the IHS Project Oversight or his/her representative.

1. Violation of this provision shall require the removal and replacement of the backfill at Contractor’s expense, even if backfill was correctly placed and compacted.

C. Compact in lifts not to exceed 6 inches in loose measure.

D. Utilize Class I, II, or III materials as appropriate for bedding as listed in the following table.

Use of Soils and Aggregate for Bedding

Class IA Class IB Class II Class III General Excellent pipe support. Excellent drainage.

Excellent pipe support. Good drainage. Minimizes migration of adjacent material.

Good pipe support. Fair drainage.

Reasonable pipe support. Poor drainage

Compaction Not required Not required Required 85% of Standard Proctor.

Required 90% of Standard Proctor.

Wet Conditions (below current or future water table). Rock Cuts

Acceptable. Shall use same material for Haunching.

Acceptable. Shall use same material for Haunching.

Acceptable. Clean groups only suitable for drainage blanket.

Not- Acceptable

Dry Conditions Acceptable Acceptable Acceptable Acceptable

3.05 HAUNCHING AND INITIAL BACKFILL

A. General

1. Provide imported backfill if native soil is unsuitable for haunching and initial backfill.

File: Individual Well Drilling BPA 2021 Section 31 23 23.1300 - Page 5 of 6

a. Unsuitable native soil id defined as solid or loose rock, dry or frozen lumps greater than ¾ inches in diameter (in any dimension), or containing organic material, or any other material that could damage the pipe.

2. Provide complete and uniform bearing and support for the pipe, including allowance for bell holes, or structure.

3. Work material under and around the pipe to ensure full pipe support.

4. Hand tamp to prevent movement of the pipe during placement of material.

5. Compact in lifts not to exceed 6 inches in loose measure.

6. Avoid contact between the pipe and compaction equipment.

B. Utilize Class I, II, or III materials as appropriate for haunching and initial backfill as listed in the following table. No frozen materials or frozen clods shall be permitted.

Use of Soils and Aggregate for Haunching and Initial Backfill Class IA Class IB Class II Class III General Excellent pipe support. Excellent drainage. Install to a minimum of 4” above the pipe crown.

Excellent pipe support. Good drainage. Minimizes migration of adjacent material. Install to a minimum of 4” above the pipe crown.

Good pipe support. Fair drainage. Install and compact to a minimum of 6” above the pipe crown.

Reasonable pipe support. Poor drainage. Install and compact to a minimum of 6” above the…