Special_Project_Specifications.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

Rev. Date 7/12 - Soda Creek Generator Wiring - 01 90 00 - 1/1 - Mobilization Payment Procedures

SECTION 01 90 00

MOBILIZATION PAYMENT PROCEDURES

1. PART 1 - GENERAL

1.01 SUMMARY

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

2. PART 2 - PRODUCTS (NOT USED)

3. PART 3 - EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 PROGRESS PAYMENTS WILL BE MADE AS FOLLOWS:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

C. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

D. The total of all payments shall not exceed the original contract amount for this item.

4.02 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01 90 00 Mobilization Lump Sum

END OF SECTION

USDA Forest Service Project Specifications

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SECTION 26 00 10

GENERAL TECHNICAL PROVISIONS

1. PART 1 - GENERAL

1.01 DESCRIPTION

A. Furnish all labor and material necessary for the installation, connection, testing and adjustment of all circuits, electrical equipment, pull boxes, gas lines and generators specified herein, shown, or noted on the drawings, specified or required in other portions of this specification and delivered to the Government as a complete installation in all respects ready for use.

1.02 REFERENCES

A. 31 23 16 - Utility Trenches

1.03 GOVERNMENT FURNISHED EQUIPMENT

A. The Government will furnish the following items to be installed by the Contractor:

1. Concrete Pull Box with 12”Extension and Steel Lid, Traffic Rated – 1 Each

2. 2” Schedule 40, Electrical Conduit – 200 Linear Feet

3. 2” Schedule 80, 90 Degree Elbow, Standard Radius – 2 Each

4. 2” Galvanized Rigid Steel Conduit – 50 Linear Feet

5. #3/0 AWG, Insulated Copper Wire, Type RHH/RHW – 580 Linear Feet

6. 30 REZG Kohler Generator The Contractor will furnish all labor, equipment, and all other materials required for complete installation of the work specified herein and as shown on the drawings.

1.04 QUALITY ASSURANCE

A. Codes and Standards: All materials shall conform to the applicable current standards (standard rules, regulations and specifications), Institute of Electrical and Electronic Engineers (IEEE), Insulated Power Cable Engineers Association (IPCEA), National Electric Code (NEC). All materials shall bear the label of, or be listed by, the Underwriter's Laboratory, Inc., (U.L.), National Standard Plumbing Code (NSPC), American Society for Testing and Materials (ASTM) and American National Standards Institute (ANSI). Where conflicts exist between any of the above standards, the standard which is most stringent shall take precedence.

B. Errors and Omissions: Any errors found in plans or specifications shall be brought to the attention of the COR. Contractor is responsible for execution all work to meet applicable codes. Discovery of errors does not relieve contractor from responsibility to perform all work to meet standards and codes.

C. Resolve all conflicts with applicable regulations. Prepare and submit to the COR all additional clarifying details including substitute methods and materials as needed to secure the required approval and resolve conflicts.

D. All work shall be done by electricians licensed by the state in which the work is performed.

E. Accepted Manufacturers: Where equipment is specified to be of a certain manufacturer, similar equipment of other manufacturers normally engaged in this type of manufacture may be substituted. Substituted equipment shall comply with the specification. Furnish equipment

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1.05 DRAWINGS

A. For clarity and legibility, the electrical layouts are essentially diagrammatic. The size and location of equipment is shown wherever possible. Make use of all the data in all the contract documents and verify information against actual field conditions. Install materials and equipment to conform to the available space. Maintain required accessibility and clearances, and satisfy the requirements of the governing codes.

B. Electrical drawings and layout may not necessarily suit the requirement of the particular manufacturer's equipment, which is installed. Modify wiring and location as required for proper installation.

C. Submit proposed modification to COR for approval and note change on record drawings prior to making such modification.

1.06 MATERIAL SUBMITTALS

A. Submittal format: The contractor shall supply all submittals in original manufacturers PDF cut sheets on all material and equipment herein and those materials specified on the drawings.

B. Obtain written approval for the above submittals prior to construction, assembly, and delivery.

C. Furnish complete material submittals where possible. Partial submittals will be considered only to allow timely ordering of equipment.

D. Submittals shall have sufficient detail to determine if ratings, characteristics, and physical construction are equivalent to those specified.

E. Where manufacturer's catalog sheets are used, indicate the specific items to be supplied in ink either by arrow, encircled on the sheet, or the inapplicable portion blocked out. List manufacturer's name, contract, section and drawing sheet reference number on each catalog sheet. Identify where equipment is to be used, if not obvious.

F. Submittals shall show any changes to be made resulting from substitution of equipment or materials for those that are specified.

G. Make complete submittals of all equipment within 10 calendar days of notice to proceed.

1.07 DELIVERY AND STORAGE

A. Deliver and store materials in original containers, protected from the elements and theft, and accessible for inspection.

B. Store items subject to moisture damage in a dry, heated place.

C. Protect material against dirt, water, chemical or mechanical injury.

1.08 PAINTING

A. Keep all work clean and in condition to receive paint. Panelboards, switchboards, or electrical equipment permitted to get dirty or rusty shall be cleaned or replaced.

B. All exposed ferrous electrical fittings, devices, conduit, boxes, enclosures and equipment not factory painted, galvanized, or specified to be painted in this Division shall be painted to match surrounding finish.

C. Protect electrical components that are not to be spray painted from overspray. Electrical components damaged or accidentally painted shall be replaced.

D. Building surfaces shall be patched and painted to match adjacent surface.

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1.09 EXCAVATION AND BACKFILL

A. Excavation and backfill for this work shall be in accordance with Section 31 23 16.

B. Typical underground utility electrical details are shown on the drawings.

C. No underground utilities shall be buried until pressure testing has occurred and the COR has been notified in writing.

1.10 INSPECTIONS AND TESTS

A. At the final inspection, conduct tests to determine that a complete workable electrical system has been installed conforming to the drawings, applicable codes, and specifications.

B. All piping shall be pressure tested according to manufacturer’s specifications and in accordance with applicable plumbing codes.

1.11 OPERATING INSTRUCTIONS

A. After completion and testing of the work, instruct the COR in operation and maintenance of the electrical system, including generator start-up and shut-down, for a minimum period of one day.

2. PART 2 - PRODUCTS

2.01 GENERAL

A. Provide all products shown in drawings and specified in Division 26 complete with accessories and mounting materials.

2.02 CONDUIT

A. Underground conduit shall be PVC, Schedule 40, per NEMA TC-2.

B. Above ground conduit shall be galvanized rigid steel conduit, per UL 6 and ANSI C80.1.

2.03 LIQUID PETROLEUM (LP) GAS PIPING SYSTEM

A. LP gas piping buried beyond 5’ of concrete slab:

1. Polyethylene Pipe: ASTM D2513.

2. Fittings: ASTM D2513 Socket Type.

3. Joints: Fusion Welded.

B. LP gas piping buried within 5’ of concrete slab:

1. Steel Pipe: ASTM A53, Schedule 80 black, with AWWA C105 polyethylene jacket or double layer, half lapped 10 mil polyethylene tape.

2. Fittings: ANSI B16.3, malleable iron with AWWA C105 polyethylene jacket or double layer, half lapped 10 mil polyethylene tape.

3. Joints: Screwed with approved standard threads.

C. LP gas piping above grade:

1. Steel Pipe: ASTM A53, Schedule 80 black, 2 coats of rust inhibiting paint.

2. Fittings: ANSI B16.3, malleable iron.

3. Joints: Screwed with approved standard threads.

D. LP gas pipe to Generator:

1. Stainless Steel flexible connection with polymer coating, maximum 48 inches.

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E. Shut off valve:

1. Ball Valve shut off shall be rated for propane service.

2.04 CONDUCTOR

A. Insulated Copper Wire, Type RHH/RHW, shall be used. Aluminum will not be permitted.

2.05 DISTRIBUTION PANEL

A. Distribution panel specifications are shown on sheet 5 of 5 of the drawings.

2.06 TRANSFER SWITCH

A. Transfer switch specifications are shown on sheet 5 of 5 of the drawings.

2.07 MOUNTING SUPPORT

A. Mounting support shall be comprised of Rigid Galvanized Steel (RGS) posts with Unistrut supports.

2.08 METALLIC CORE MARKING TAPE

A. Furnish plastic covered aluminum marking tape for power conductors and LP gas line.

B. Tape width: 2".

C. UNDERGROUND DETECTABLE - 5 MIL 2 Mil Polyethylene Film Reverse Printed and

Laminated To Aluminum Foil Then Laminated To 2 Mil Polypropylene Film D. Color: Power- Red, Gas Line- Yellow.

E. Inscription: Power Conductors "Caution, Buried Power Line", Gas Line "Caution, Buried

Gas Line".

1. Red- Buried Electrical Line Below

2. Blue- Buried Water Line Below

3. Green- Buried Sewer Line Below

4. Yellow- Buried Gas Line Below

5. Orange- Buried Telephone Line Below

2.09 MOUNTING SUPPORT

A. Mounting support shall be comprised of Rigid Galvanized Steel (RGS) posts with Unistrut supports.

2.10 PRIVACY SLATS

A. Privacy slats shall be the full height of the fence and shall be installed on the entire fence enclosure, including the gate. Color to be determined by the Engineer in the field.

PART 3 - EXECUTION

2.11 GENERAL

A. Follow manufacturer's directions in delivery, storage, protection and installation of equipment and materials.

B. Notify COR of any conflicts between manufacturer's instructions and contract documents.

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2.12 WIRING METHODS

A. Concealed Wiring: Install all wiring, raceway, boxes, fittings, etc., concealed unless otherwise specified or shown on the drawings.

B. Installation: Install equipment and materials, align, level and adjust for satisfactory operation.

Install equipment so that all parts are easily accessible for inspection, operation, maintenance and repair.

C. Sealing: Seal equipment raceways, boxes, etc., exiting through structures exposed to the weather and make watertight and insect-proof. Protect equipment outlets and conduit openings at all times that work is not in progress; utilize temporary plastic plugs or caps designed for the purpose. All penetrations through fire rated walls and floors shall be fire sealed with UL listed fire rated material, D. Required Clearances: Comply with NEC Art 110-26. No grounded equipment will be allowed in this clearance space.

E. Junction Boxes and Pull Boxes: Install junction and pull boxes in locations that will be accessible after completion of the installation. In general, provide boxes to limit branch circuit conduit runs to 125 feet and to limit bends to the equivalent of 270 degrees.

Additional boxes may be provided to facilitate wire pulling.

F. External Junction Box Sealing: Seal conduits entering external junction and outlet boxes on outer side of structure with duct seal for three inches to prevent moisture entrance.

2.13 RACEWAYS

A. Table A specifies the type of raceway required for each location and application by raceway definition listed below. Unless otherwise specified in Table A, unscheduled conduit shall be rigid steel type RGC.

B. Raceway definitions:

1. NMSC – Non-metallic sheathed conduit (Romex)

2. EMT - Electrical Metallic Tubing

3. IMC - Intermediate Metal Conduit

4. RGC - Rigid Galvanized Conduit

5. RGC-PVC - Rigid Galvanized Conduit with PVC Coating

6. FLEX - Flexible Steel Tubing

7. LIQUIDFLEX - Liquid Tight Flexible Steel Tubing (Sealflex)

8. PVC - Polyvinyl Chloride

9. HDPE - High Density Polyethylene

10. INNERDUCT Innerduct flexible nonmetallic conduit for fiber optic cable.

11. FLEXPVC Flexible non metallic tubing

C. Metallic Raceways: Install all power and control wiring in metallic raceways unless otherwise shown on the drawings. Install raceways concealed unless otherwise shown.

D. Raceway Sealing: Seal raceway where entering through structure with duct seal for three inches to prevent moisture entrance.

E. Raceway Types: Use the following types of raceways in locations shown, unless otherwise shown on the drawings. Any of the indicated raceways may be used for the indicated locations. Other wiring methods as shown on the drawings.

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F. TABLE A

NMSC EMT IMC RGC RGC-

PVC FLEX LIQUID

FLEX

SCH 40

PVC

SCH 80

PVC

FLEX

PCV

HDPE

SCH80

INNER

DUCT

Embedded in concrete X

Direct Burial X X X X

Noncorrosive Exposed to Weather

X X X X

Hazardous Locations (Class I, Division 1)

X X X

Exposed Runs Sizes Larger than 1-1/4"

Furred Spaces (concealed behind walls or ceilings) in Dry

X X X X X X

Inside of Concrete Blocks

Interior Buildings Dry

X X X X X X

Interior Building Wet or Damp

Exterior of Buildings Dry or Wet

Corrosive Locations X X X

In Dry from J- Boxes to

X X

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NMSC EMT IMC RGC RGC-

PVC FLEX LIQUID

FLEX

SCH 40

PVC

SCH 80

PVC

FLEX

PCV

HDPE

SCH80

INNER

DUCT

Fluorescent Fixtures if on Chain J-Box to Fixed Motors, Unit Heaters, and Fixed Equipment

J-Box to Fluorescent Fixtures if on Pendant in Wet

G. Sizes: Use raceways no smaller than 3/4 inch except that 1/2 inch may be used for switch legs, and ground conductors to ground rods, or as shown on drawings.

H. Metallic Raceways in Earth or Concrete: Use RGC-PVC coated, galvanized metallic raceways and fittings buried in earth or concrete unless shown to be PVC.

I. Raceways Exposed: Run exposed raceways in straight lines, at right angles, or parallel with building and equipment lines.

J. Underground Conduit:

1. Install raceways to provide not less than 30 inches to finished grade. Pitch to drain;

avoid trapped runs where possible. Grade trenches and place select material to provide uniform trench bottom for raceway support.

K. Raceway Fittings, Connections and Installation:

1. Couplings and Connections: Make all raceway couplings and connections watertight.

2. On rigid metallic conduit systems, use threaded connections at all locations.

3. On electric metallic tubing system, use insulated throat, rain-tight, concrete tight compression-type fittings at all locations. Indentor or set screw fittings will not be allowed.

4. On PVC systems, use PVC glued joints except at metal or fiberglass enclosures, use watertight hubs.

5. Make all box connections with two locknuts and one insulated steel, plastic or fiber bushing if threaded hubs are not provided. On all metallic conduit and tubing systems, provide grounding locknuts or grounding bushings where required.

6. Provide 3" of duct seal at exterior conduit entrances to junction boxes as specified above under RACEWAYS.

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2.14 PROTECTION

A. Cap raceways immediately upon rough-in. Utilize temporary plastic caps designed for the purpose.

2.15 RACEWAY INSTALLATION

A. Install raceways as follows unless otherwise shown or specified.

B. Use one hole cast malleable iron conduit clamps or beam clamps on exposed conduit.

Provide with screw of proper length.

C. Thoroughly clean the interior of all underground conduits and other raceways of all foreign material by compressed air or swabbing. All exposed conduit shall be clean and in new condition free of dents and machine markings.

2.16 CONDUCTORS

A. General: Circuit all feeders and branch circuits as shown on the drawings. Provide copper conductors for interior and exterior building wiring. Aluminum will not be permitted.

B. Conductor and associated conduit sizes shown on drawings are for copper.

C. The complete circuit shall be size indicated on drawings, unless otherwise noted.

D. Minimum size No. 12 AWG, 12 strand. All conductors 12 AWG and larger to be stranded.

E. Minimum Conductor Size (All wiring except control panels): Provide No. 12 AWG copper minimum size for branch circuits and control circuits unless otherwise specified, shown on the drawings, or required by overcurrent protection.

F. 600V Conductors: Provide one of the conductor types indicated for the function and location listed below unless otherwise indicated on the drawings. Provide ground and neutral wires identical in size to circuit wires unless otherwise shown on drawings. At the Contractor's option, conductors with insulation systems rated for high operating temperatures may be substituted for lower temperature rated conductors; however, no reduction in conductor size will be permitted from that indicated on the drawings. When using smaller overall diameter wire than THW, do not reduce conduit size below that required for type THW insulated conductor.

G. Provide a separate neutral conductor for each phase conductor unless otherwise shown on drawings.

H. INSULATION TYPE

LOCATION THW THHN

THWN

XLP-

USE

XHHW

or

THHN

NMSC

Lighting Circuits, Interior General

X X X

Inside Lighting Fixture Wiring Compartments

X

Branch Receptacle Circuits

X X X

Motor Circuits and Controls

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Power Outlets X X

Feeders X X

Service Overhead X X

Underground - in Raceway

X (XHHW for sizes #12-#8)

Outside - All Other

I. Derating: Derate circuits which are combined by increasing wire size above the minimum shown on the drawings to the full ampacity shown in Tables NEC 310-16 and 310-17 according to Table 310-15(b)(2)(a).

J. Identification:

1. Furnish factory color coded 600V wire size No. 6 AWG and smaller as follows:

120/240V 120/208V 120/240V 277/480V

3-PHASE 3-PHASE 1-PHASE 3-PHASE

Phase A Black Black Black Brown Phase B Orange (wild leg) Red Red Orange Phase C Blue Blue Yellow Neutral White White White Gray Ground Green Green Green Green

2. Utilize orange for the 4-wire, delta-connected systems only to identify the phase having higher than 120 volts to ground (wild leg), or 120/240V 3 phase.

3. Phase code wire size No. 4 AWG and larger utilizing waterproof, non-metallic, colored pressure sensitive tape at all boxes, switchboards, panelboards and at equipment served.

2.17 IDENTIFICATION NAMEPLATES (SEE 260050 FOR NAMEPLATE CONSTRUCTION)

A. Provide 4" x 6" nameplate at main service or distribution panel with the following designations:

1. Electrical Contractor.

2. Installation date and system voltage, phase, number of wires, "delta" or "Y" (208Y/120

Volt, 3 phase, 4W) or (120/240 Volt, 3 phase, 4W Delta) example.

2.18 CONDUCTOR INSTALLATION

A. Keep all conductors within the manufacturer’s allowable tension limits during installation.

Use lubricants for wire pulling intended for use with the insulation and raceway material.

Observe cable manufacturer's and industry standard cable bending radius recommendations.

Do not install conductors at temperatures less than 30 degrees F.

2.19 SPLICING AND TERMINATIONS

A. General: Provide all splices and terminations including all required hardware for a complete installation.

B. Insulated tap collectors shall be used at all splices and shall provide overall insulation equal to that of the conductor utilized. Plastic tape, cast-in-place encapsulating, insulating resin, or heat shrinkable tubing, and split bolts will not be permitted.

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2.20 UNDERGROUND CONDUCTORS

A. Install splices and terminations underground in junction boxes and splice vaults or above ground pedestals where shown on drawings. Provide a splice vault if cable is damaged during installation and a splice is required.

2.21 GROUNDING SYSTEM

A. General: Provide all grounding systems and make connections mechanically secure and electrically continuous. Ground all line and low voltage electrical systems completely and effectively as required by code and as specified herein.

B. Ground all raceway systems and equipment enclosures. Where not otherwise indicated, grounding conductor size shall conform to the most stringent of the governing codes.

C. Ground the system to exterior ground rods, foundation Ufer Ground conductor, and building cold water piping. Provide at each such grounding location two 3/4-inch diameter by 10-foot long copper-clad steel ground rods spaced 6 feet apart and connected to the system neutral.

D. Furnish bolted grounding conductor connections. All grounding points to be accessible after installation. A ground rod enclosure shall be provided flush at final grade with a lid to access ground connection.

E. Furnish an insulated green copper equipment ground conductor installed in each conduit sized for the largest branch circuit per NEC 250-122, unless otherwise noted.

F. For isolated ground circuits, furnish and install a green insulated with yellow striping, isolated ground conductor in addition to an insulated green copper equipment grounding conductor.

G. Maintain continuity of equipment ground throughout the entire raceway, cabinet and equipment enclosure system. Use grounding bushings and jumpers wherever normal conduit termination does not ensure continuity. Where nonmetallic conduit is used for distribution or where direct burial cables are employed, install a green with one or more yellow stripes, insulated equipment ground conductor with each circuit.

2.22 TESTS

A. General: Perform the tests as described below. Notify the COR in writing five days in advance of all tests in this and other sections of this specification. Perform all tests in the presence of the COR. Upon completion of all tests, submit written test results in duplicate for approval by the COR prior to acceptance.

B. Test Report Forms:

1. Furnish data in tabular form listing required test data, name of tested device, location, serial number, type and name of measurement instrument with scale settings.

C. Preliminary Tests (distribution panels and motor control panels)

1. Install all mechanical and electrical equipment before any preliminary electrical tests are made and final connections are made.

2. Test all control and power conductors including neutrals and isolated grounds for insulation resistance and continuity as described below (before connection of conductors to control panels, controlled and pilot devices).

3. Connect all power and control conductors to distribution panels and control panel terminals after all preliminary tests have been done as described above.

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D. Ground System Tests: Immediately after installation, before connection, test driven grounds and foundation ground. Test driven ground rods individually. The combined resistance of all grounded-together electrodes in a group shall not exceed 15 ohms at the main point of connection. Submit the results, date of test and soil conditions to the COR in writing immediately after testing. Tests shall be made with a 3-point probe tester (Associated Research Vibro Ground Tester or equivalent). A standard ohmmeter will not work for this test. Splice vault ground rod resistance shall be 25 ohms maximum.

E. Insulation Resistance: Test insulation resistance under normal climatic conditions. Conform to the following:

1. Measure resistance between all insulated conductors (including neutral and isolated ground) and ground as well as each other. Coordinate testing with COR so that tests can be witnessed if desired.

2. For circuits with less than 600 V rated insulation, other than control circuits, conductor insulation resistance as installed shall not be less than 200 megohms to ground. This does not apply to telephone or control cable. Perform tests with Megohm meter and apply DC voltage that does not exceed limit set by cable manufacturer.

F. Insulation Resistance Testing Procedure

1. Object of test: Measure the resistance of all insulated conductors to ground and to each other. This includes each power distribution and control panel, main feeder and each branch circuit and all control circuits.

2. Perform testing after all wiring is in place, with loads disconnected. All electronic devices must be disconnected to avoid damage. This includes electronic switches and outlets (GFI's). GFI breakers in branch panels must be removed, with the phase and neutral wires connected to an adjacent breaker for testing.

3. Open the main service switchgear disconnect switch.

4. Close the branch panel main switch and all branch circuit breakers.

5. Connect Megohm meter to phase, neutral, ground and isolated ground busses in the combinations shown in the following table. The neutral and isolated ground must be disconnected from ground at the main service switchgear in order to test the feeders.

6. The following table can be used to record readings:

TEST LOCATION________________________________

A B C N G IG

A n/a

B n/a n/a

C n/a n/a n/a

N n/a n/a n/a n/a

G n/a n/a n/a n/a n/a

(Minimum of 10 readings w/o isolated ground)

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(Minimum of 15 readings with isolated ground)

7. Apply voltage to circuit:

a. Wires with 600 V rated insulation: Apply 2500 VDC. A minimum value of 200 megohm is required.

i. Exception. Outlets may arc at less than 2500 VDC. If this happens, reduce the voltage to a lesser value and record the megohm value.

b. Wires with less than 600 V rated insulation: Apply voltage which does not exceed manufacturer's recommendations. A minimum value of 200 megohm is required.

8. If the megohm value is less than 200 megohms, isolate the problem circuit by opening breakers one at a time.

2.23 FINAL TESTS

A. Final Test: Start final tests after complete preliminary tests have been made. System performance shall conform to the following criteria. Note any deviations on the test reports with indication of corrective action taken or proposed.

B. Power Distribution Panels Submit the following information:

1. No load and full load voltage, phase-to-phase, to ground in each panel main feeder at maximum system load conditions.

2. Full load current on each branch circuit in each panel at maximum system load conditions. (Show staged current as described above)

3. Full load current on each main supply conductor to each panel and all feeders at maximum system load conditions.

4. Unbalanced neutral current in each panel. The above measurements are for worst case maximum load for each phase.

C. Test all control systems that interact with each other as a complete system to demonstrate that all interconnections and interactions are correct and that all interwiring is functional.

D. Test Failure: Failure of any phase of the operation tests shall constitute failure of the system.

Correct failures and retest system. Repeat until the system is operating to required specifications.

E. Test Reports

1. Submit dated "Electrical System Test Reports" indicating all tests performed and demonstrating conformance with the required system performance criteria in tabular form as described above. Include all voltage, current, and resistance test data of the electrical service, main feeders, panelboards, motor control panels, control system tests and ground systems as applicable. Submit test reports prior to final inspection.

F. Final Corrections:

1. Correct promptly any failure or defects revealed by these tests and reconduct tests on these corrected items. Make any final adjustments for optimum operation of all equipment.

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3. PART 4 - MEASUREMENT AND PAYMENT

3.01 METHOD OF MEASUREMENT:

A. Measurement will be based on the delivery of a fully operational electrical system which includes the completion of all work stated herein, as shown on the drawings and as described in Section C.1 Description of Work.

B. Excavation, bedding and backfill for utilities is considered incidental to pay item 26 00 10, General Technical Provisions.

C. Installation of privacy slats will be considered incidental to pay item 26 00 10, General Technical Provisions.

3.02 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

26 00 10 General Technical Provisions Lump Sum

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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.

1.03 PROJECT CONDITIONS

A. 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.

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

4. Electrical Bedding Material.

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

5. Select Material.

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

6. Select Excavated Material.

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

7. 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.

8. Unsuitable Materials.

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

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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.

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. 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.

G. 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

3/3/2015 - Soda Creek Generator Wiring - 31 23 16- 3/4 - Excavation and Backfill for Utilities 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.

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.

3/3/2015 - Soda Creek Generator Wiring - 31 23 16- 4/4 - Excavation and Backfill for Utilities

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.

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.

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.