Attachment043SpecsWellLogWFILiberyAsBuilt.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

2/16/2011 Section 31 23 16-1

Utility Trench Construction

SECTION 31 23 16

EXCAVATION AND BACKFILL FOR UTILITIES

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies excavation and backfill for utilities, including excavation;

furnishing, hauling and placing of backfill material; disposal of excess or unsuitable backfill material; and grading.

B. There is no disposal site identified for waste materials. Contractor is responsible for disposal.

1.02 SUBMITTALS

A. Excavation.

1. Notify COR when excavation is completed. Do not place pipe, cable or bedding backfill until the excavation is approved by the COR.

B. The Contractor shall provide submittals in accordance to the contract and shall include:

1. Certification, test results, source and samples for all imported material.

2. Required permits.

1.03 PROJECT CONDITIONS

A. The materials investigation data shown on the Drawings is from Government conducted investigations, and is provided as information only. This information is subject to interpretation and should be considered as representative of the material only at the specific materials investigation test sites.

B. Contractor shall be responsible to call for utility locate services, if available in area.

2. PART 2 - PRODUCTS

2.01 MATERIALS

A. Backfill Materials.

1. Backfill material shall contain no frozen or organic material.

a. Asphalt Surfaces.

1) Washington Department of Transportation (WSDOT), Class "B" or "F.”

2. Bedding Material.

a. Fine soil or sand, 100 percent passing the #4 sieve; or crushed rock less than 1/2 inch.

3. Crushed Rock.

a. Crushed aggregate, meeting the requirements of AASHTO M147 grading

D.

4. Drain Rock Material.

a. Round, washed gravel, ASTM D448 (AASHTO M43), Size Number 24.

5. Electrical Bedding Material.

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Utility Trench Construction

a. Natural sand passing the #8 sieve, without sharp chips or points.

6. Select Material.

a. Fine soil or sand, 100 percent passing the #4 sieve.

7. Select Excavated Material.

a. Excavated material containing no rocks larger than 6 inches in largest dimension.

8. Topsoil.

a. Soil or loam containing no rock larger than 2 inches.

b. Loose, nonplastic soil free of roots, weeds, subsoil admixture, excessive organic matter, clods, stones, gravel or other material detrimental to plant growth. Maximum particle size 1/2 inch.

9. Rock.

Boulders and pieces of concrete exceeding 350 pounds in weight, or solid rock that requires drilling and blasting, or breaking up with a power operated hand tool. No soft or disintegrated rock that can be removed with a power operated excavator or shovel as determined by the COR will be considered rock excavation.

10. Unsuitable Materials.

Material designated as rock excavation ,greater than 3-inch diameter, poorly graded, or having a moisture content to low or high to provide for adequate compaction.

3. PART 3 - EXECUTION

3.01 CONSTRUCTION

A. Excavation.

1. Excavation shall not begin until all clearing and grubbing work is completed except for final debris disposal. Operations shall be in compliance with the requirements and restrictions of OSHA, and Washington Occupational Safety and Health Code.

2. All trenches shall be excavated in reasonably close conformity with the lines and grades shown on the Drawings. Any shifting or change from the alignment and grade shown on the Drawings must receive prior approval by the COR in writing.

3. Lay utilities in continuous open trench.

4. Trim roots flush with trench wall.

B. Overexcavation.

1. Restore to grade any overexcavation by backfilling with select material.

C. Salvage of Topsoil.

1. Excavate top 8 inches of surface material and stockpile separately for use as topsoil backfill material.

2. Suitable topsoil not containing well-bound pieces of sod may be conserved for use as topsoil backfill material.

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Utility Trench Construction

D. Wet Excavation.

1. If water is encountered during trench excavation, provide adequate pumping equipment and piping to keep trench free from water and dispose of the water without damage to adjacent property. Separate payment will not be made for pumping of water from trenches or for excavation of material rendered unsuitable as a result of water encountered.

E. Unsuitable Material.

1. Where unsuitable material is encountered in the trench bottom, as determined by the COR, excavate the trench below grade to the depth specified by the

COR.

F. Rock Excavation and Blasting.

1. Blasting for excavation will be permitted when proper precautions are taken for the protection of persons and property. Notify the COR of blasting schedule a minimum of 48 hours prior to commencing blasting operations.

2. Any damage caused by blasting shall be repaired at the Contractor's expense.

The methods or procedure shall conform to State laws and regulations.

3. The hours of blasting shall be between 10 A.M and 3 P.M. (Do not blast during weekends and holidays).

G. Backsloping, Sheeting and Shoring.

1. Backsloping of trench walls will be allowed only upon prior written approval of the COR.

2. Remove all shoring and sheeting when construction is completed. Withdraw to prevent trench wall caving while backfilling.

H. Excavated Material.

1. Pile excavated material at the side of the trench where it will give the best protection for the work. Leave adequate space between the toe of the spoil pile and edge of trench to prevent material from falling into the trench.

I. Backfill.

1. Do not place backfill until installation of pipe or cable has been approved by the COR.

2. Before compacting backfill other than rock or sand, prepare material to a water content that will permit proper compaction by either aerating the material if it is too wet, or spraying the material with water if it is too dry. Thoroughly mix each lift before compaction to assure uniform distribution of water content. Do not compact material above pipe or cable until there are 6 inches of cover over the pipe or cable.

a. Select Material.

1) Place in 6 inches lifts or less and compact with a minimum of 3 passes over the entire lift surface.

b. Bedding Material.

1) Place in lifts 4 inches or less in thickness and compact with a minimum of 3 passes over the entire lift surface. Compact around pipe barrel and bells by hand tamping.

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Utility Trench Construction

c. Select Excavated Material.

1) Distribute large rocks so they are individually surrounded by fine materials. Place select excavated material as follows where backfill classes are indicated on Drawings.

3. Compaction Requirements.

a. Compact each lift (with the required number of passes of a mechanical vibrating tamper over the entire layer) (to the required density). The number of tamper passes required may be reduced upon acceptance by the COR, if approved test method results demonstrate that the backfill compaction meets or exceeds the density of the natural ground adjacent to the trench. Any such testing shall be performed at the Contractor's expense.

a) Class A: Place in 6 inch lifts or less to within 8 inches of finished grade and compact to at least 90 percent of the maximum dry density as determined by AASHTO T99.

b) Class B: Place in 6 inch lifts or less and compact each lift with 3 passes of tamper.

c) Class C: Place in l2 inch lifts or less, and compact each lift with 6 passes of tamper. At depths greater than 5 feet, compact each lift with 3 passes of tamper.

d) Water compaction shall not be used.

3.02 REPAIR/RESTORATION

A. Damage to existing underground utilities.

1. Stop all work associated with damage to existing utilities, and notify the COR.

Repair utility as directed by the COR.

2. Repair at Contractor's expense underground utilities that are within 5 feet of where shown on Drawings, and damaged by the Contractor.

3. Repair at Government expense underground utilities not shown on Drawings or not within 5 feet of where shown on the Drawings, and damaged by the Contractor.

4. Repair at Contractor's expense underground utilities marked on the ground or shown on Drawings, and damaged by the Contractor.

5. Repair at Government expense underground utilities not shown on Drawings or not marked on the ground, and damaged by the Contractor.

B. Surface Restoration.

1. Restore all surfaces in kind and in accordance with backfill classes indicated on Drawings:

a. Class A: Mound final uncompacted lift above finished grade.

b. Class B: Place topsoil in 6 inch maximum lifts and compact each lift with

3 passes of tamper.

c. Class C: Place crushed rock in 6 inch lifts or less and compact each lift with 6 passes of tamper. Add water if necessary to compact at near optimum moisture content.

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Utility Trench Construction

d. Class D: Place crushed rock in 6 inch lifts or less and compact each lift with 6 passes of tamper. Trim and prime existing asphalt edges before patching. Mix temperature shall not be less than 240 degrees F at time of placement. Compact asphalt with truck or similar type construction vehicle in a direction parallel to the cut if possible. Begin compaction at and parallel to the edge of the patch.

2. Manhole or Pull box Backfill.

a. Place in l8 inch maximum lifts. Compact with a minimum of 2 passes over the entire surface of each lift. Place no rocks larger than 3 inches in largest dimension within 6 inches of manhole.

3. Final Finish.

a. After the utility installation and backfill has been completed, finish all disturbed areas, except trench area required to be mounded, to a smooth, uniform grade and texture, well blended to the original contours, showing minimum evidence of construction activity.

C. Seeding.

1. Not required

D. Sod Replacement.

1. Not required

3.03 CLEANING

A. Disposal of Excess of Excavation and Unsuitable Material.

1. Remove excess and unsuitable material from the site for disposal off National Forest Land.

3.04 SCHEDULES

A. Backfill and restore surface materials of utility line trenches located in existing roadways, parking areas, driveways, and lawns within 7 days after approval to place backfill by COR.

END OF SECTION

USDA Forest Service Project Specifications

2/17/2011 Section 33 11 00-1

Water Utility Distribution Piping

SECTION 33 11 00

WATER UTILITY DISTRIBUTION PIPING

1. PART 1 GENERAL

1.01 1.1 SUMMARY

Section Includes:

A. Pipe and fittings for site water supply line.

B. Valves.

C. Underground pipe markers.

D. Bedding and cover materials.

1.02 RELATED SECTIONS:

A. Section 31 23 16 – Trenching and Backfilling.

B. Section 33 21 00 Well Supply Pumps and Controls

1.03 REFERENCES

See reference Section L of the solicitation/contract.

1.04 SUBMITTALS

A. Section 01 77 00 - Submittal Procedures: Requirements for submittals.

B. Product Data: Submit data on pipe materials, pipe fittings, valves and accessories.

1.05 CLOSEOUT SUBMITTALS

A. Section 01 77 00 - Execution Requirements: Requirements for submittals.

B. Project Record Documents: Record actual locations of piping mains, valves, connections, thrust restraints, and invert elevations.

C. Identify and describe unexpected variations to subsoil conditions or discovery of uncharted utilities.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Section 01 45 00 – Quality Control: Requirements for transporting,

1.07 HANDLING, STORING, AND PROTECTING PRODUCTS.

A. Deliver and store valves in shipping containers with labeling in place.

2. PART 2 PRODUCTS

2.01 WATER PIPING

A. Schedule 80 PVC solvent welded joints (for all water piping unless otherwise noted)

B. Fittings: PVC

C. Joints: Solvent Welded, or threaded

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D. Piping must meet AWWA standard and be NSF 61 approved

2.02 WATER METER

A. Description: AWWA C700, displacement-type, low-lead bronze main case, NSF-61 certified. Register flow in gallons.

B. Model: 3/4” SR as manufactured by Sensus Metering Systems, or an approved equal.

C. .PREFABRICATED BOX AND LID

1. Dimensions: As indicated on the Drawings.

2. Precast Concrete Model: Concrete Boxes as manufactured by Willamette Graystone Products, Inc. or an approved equal.

3. Plastic Model: D-1200 as manufactured by NDS Products or approved equal as shown in the drawings.

D. LOCKING MECHANISM

1. Provision shall be made to secure the lid to the box using a padlock and or pentagon nut as illustrated on the Drawings or as provided by the manufacturer.

E. BOX INSULATION

1. Description: Polyurethane sheets or spray-on polyurethane foam, as approved by the Contracting Officer.

2.03 GATE VALVES

Manufacturers: One of the following, or approved equal:

A. M&H/Kennedy Valve Company

B. Mueller

C. American Flow Control

D. AWWA C509, Iron body, bronze trim, non-rising stem with square nut, single wedge, resilient seat, mechanical joint ends, control rod and extension.

E. Valve Boxes: Boxes shall be of cast iron, two-piece slip type standard design with a base corresponding to the size of the valve. Boxes shall be coal-tar painted by the manufacturer using its standard. The cover shall have the word “WATER” cast in it. Valves having an operating nut more than 4 feet below grade shall have a valve stem extension to raise the operating nut to within 3 feet of the ground surface. Valves located outside of paved areas shall have a concrete pad cast around the valve box, measuring a minimum of 18 inches long by 18 inches wide.

2.04 UNDERGROUND PIPE MARKERS

A. Manufacturers:

1. Seton Name Plate Company or approved equal.

2. Metallic Detection Tape: Bright colored, continuously printed, minimum 6 inches by 4 mil thick, manufactured for direct burial service. Blue color for Water service.

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2.05 BEDDING AND COVER MATERIALS

A. Bedding: Crushed aggregate as specified in Section 31 23 16.

B. Pipe Zone – (12 inches above pipe): Crushed aggregate or select materials as specified in Section 31 23 16.

C. Backfill from Pipe Zone to Finish Grade:

D. Under Pavement and Buildings: Crushed aggregate as specified in Section 31 23 16, compacted to 95 percent of the maximum dry density as determined by ASTM D698.

E. Under Gravel Roads: Top 12” to be crushed aggregate as specified in Section 31 23 16, compacted to 95 percent of the maximum dry density as determined by ASTM D698. From top of pipe zone to within 12” of finished grade, backfill shall consist of suitable Soil, as specified in Section 31 23 16, compacted to 95 percent of maximum dry density as determined by ASTM D698.

F. Outside of Roadways and Buildings: Suitable Soil, as specified in Section 31 23 16, compacted to 85 percent of maximum dry density as determined by ASTM D698.

3. PART 3 EXECUTION

3.01 CONDITIONS BEFORE STARTING WORK.

Verify connection to existing well pipe size, location, and invert are as indicated on Drawings.

3.02 PREPARATION

A. Cut pipe ends square, ream pipe and tube ends to full pipe diameter, remove burrs.

B. Remove scale and dirt on inside and outside before assembly.

C. Prepare pipe connections to equipment with flanges or unions.

D. Give minimum 2 weeks notice to CO regarding needed water system shut down. Shut down shall be schedule during low flow periods and needs to be coordinated with the sanitary portable toilet service.

3.03 BEDDING

A. Excavate pipe trench in accordance with Section 31 23 16 for Work of this Section.

B. Form and place concrete for pipe thrust restraints at change of pipe direction. Place concrete to permit full access to pipe and pipe accessories. Provide thrust restraint bearing on subsoil as indicated on Drawings.

C. Place bedding material at trench bottom, level fill materials in one continuous layer not exceeding 8 inches compacted depth; compact to 95 percent (ASTM D698).

D. Backfill around sides and to top of pipe with cover fill, tamp in place and compact to 95 percent (ASTM D698).

3.04 INSTALLATION - PIPE

A. Maintain minimum 12 inch separation of water main from electrical conduit.

B. Install pipe to indicated elevation to within tolerance of 5/8 inches.

C. Route pipe in straight line, where not otherwise indicted on Drawings.

D. Install pipe to allow for expansion and contraction without stressing pipe or joints.

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E. Form and place concrete for thrust restraints at each elbow or fitting where direction of pipe main changes 45 or more degrees.

F. Establish elevations of buried piping with not less than 4 ft of cover, where not otherwise indicated on Drawings.

G. Install continuous metallic detection tape buried 18 inches below finish grade.

H. Backfill trench in accordance with this Section.

I. At water pipe penetrations into walls and floors, use ductile iron wall thimble or sleeve as indicated on Drawings.

3.05 INSTALLATION - VALVES

A. Set valves on solid bearing.

B. Center and plumb valve box over valve. Set box cover flush with finished grade. Place concrete pad around valve boxes located outside of paved areas.

C. Set vertical pipes plumb.

D. Install thrust blocking or other suitable thrust restraint at vertical piping.

3.06 DISINFECTION OF DOMESTIC WATER PIPING SYSTEM

A. Perform Work in accordance with AWWA C651. Submit procedure description including type of disinfectant to and calculations indicating quantities of disinfectants required to produce specified chlorine concentration in accordance with Section 3 and 4 of AWWA C651.

B. Test Reports: Indicate results of bacteriological and residual chlorine laboratory test reports.

C. Test water samples for bacterial contamination, and residual chlorine, in accordance with State Health Standards for potable water.

D. When water samples fail to meet State Health Standards for potable water perform the following corrective measures until water quality conforms to State Health Standards:

E. Inlet and Outlet Water Sample Failure: Eliminate source of contamination in water supply, repeat disinfection, and retest water quality.

F. Outlet Water Sample Failure: Repeat disinfection, and retest water quality.

3.07 FIELD QUALITY CONTROL

A. Section 01 45 00 - Quality Requirements, 01 77 00 - Execution Requirements: Field inspecting, testing, adjusting, and balancing.

B. Pressure test system to 100 psi. Repair leaks and re-test.

C. After completion of pipeline installation, including backfill, but prior to final connection to existing system, conduct, in presence of Architect/Engineer, concurrent hydrostatic pressure and leakage tests in accordance with AWWA C600.

D. Provide equipment required to perform leakage and hydrostatic pressure tests.

E. Test Pressure: Not less than 100 psi or 50 psi in excess of maximum static pressure, whichever is greater.

F. Conduct hydrostatic test for at least two-hour duration.

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G. No pipeline installation will be approved when pressure varies by more than 5 psi at completion of hydrostatic pressure test.

H. Before applying test pressure, completely expel air from section of piping under test.

Provide corporation cocks so air can be expelled as pipeline is filled with water. After air has been expelled, close corporation cocks and apply test pressure. At conclusion of tests, remove corporation cocks removed and plug resulting piping openings.

I. Slowly bring piping to test pressure and allow system to stabilize prior to conducting leakage test. Do not open or close valves at differential pressures above rated pressure.

J. Examine exposed piping, fittings, valves, hydrants, and joints carefully during hydrostatic pressure test. Repair or replace damage or defective pipe, fittings, valves, hydrants, or joints discovered, following pressure test.

No pipeline installation will be approved when leakage is greater than that determined by the following formula:

L= SD\/P 133,200

L= allowable, in gallons per hour S = length of pipe tested, in inches D= nominal diameter of pipe, in inches p = average test pressure during leakage test, in pounds per square inch (gauge)

When leakage exceeds specified acceptable rate, locate source and make repairs. Repeat test until specified leakage requirements are met.

New water line cannot be activated until a clean bacteriological test has been performed and reviewed by the COTR.

K. When tests indicate Work does not meet specified requirements, remove Work, replace and retest.

2/16/2011 Section 33 21 00-1

Well Supply Pumps and Controls

SECTION 33 21 00

WELL SUPPLY PUMPS AND CONTROLS

1. PART 1 GENERAL

1.01 SUMMARY

A. Installation of pumps, well piping, valves and controllers to provide a complete, operational system for existing well.

B. Water and system testing and certification.

1.02 RELATED SECTIONS:

A. Section 31 23 33 – Trenching and Backfill: Excavating for conduit and pipe from wellhead to building.

B. Section 33 11 00 - Water Distribution: Well piping.

C. Attached Documents: Well Logs

1.03 PROJECT CONDITIONS

A. The existing well has a xx hp model # well pump. This project is to install a variable speed pump controller to the existing well pump motor. New ‘system’ shall have an pressure tank internal to the well casing and have the control center shall be mounted on a treated post exposed to the elements.

1.04 SUBMITTALS

Submit sufficient descriptive literature to demonstrate compliance with these specifications.

Submit manufacturer's descriptive literature; catalog cuts, and installation and operation manuals.

1.05 CLOSEOUT SUBMITTALS

1.06 QUALITY ASSURANCE

Perform Work in accordance with AWWA A100.

Perform Work in accordance with the requirements of the Washington Department of Ecology and any applicable local jurisdiction.

2. PART 2 PRODUCTS

2.01 MATERIALS

A. Pump Controls

1. Make all changes necessary to replace the existing control panel in bldg. xx with variable speed control center for control of the existing pump in the existing well including but not limited to the changes described on the drawings and in the specifications.

2. Provide fittings and devices, as necessary for a complete and operational system.

3. Basis of Design: Pentek Intellidrive or other similar product. Other similar products must be approved prior to award.

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Well Supply Pumps and Controls

3. PART 3 EXECUTION

3.01 INSTALLATION

A. Well Pump Control System

1. Install per manufacturer’s instructions, as shown in the drawings, and electrical codes.

3.02 FIELD QUALITY CONTROL

A. Insulation Fault Test.

1. Conduct tests in presence of COR. Use megger type ohmmeter. Values less than manufacturer's recommended value or 2 megohms, if not given, are cause for rejection of pump installation.

2. Preinstallation Test.

a. Before splicing pump leads to power cable, check pump insulation by measuring resistance between pump housing and each pump lead.

3. Installation Test.

a. After installing pump in well and prior to starting pump, measure resistance between each pump lead and well casing.

B. Operation Test.

1. Verify pump operation after installation by operating pump in presence of COR.

Provide appropriate, portable power supply and make necessary temporary electrical connections for test. Check pump's maximum rate of flow, shut off pressure, and vibration.