03_26-1693-JN Specification 2313.pdf

PUBLIC UTILITY DISTRICT NO. 1 OF SNOHOMISH COUNTY

DATE: April 27, 2020

SPECIFICATION NO. 2313

REVISION NO. 11

TITLE: STANDARD SPECIFICATION FOR TRANSMISSION

AND DISTRIBUTION LINE CONSTRUCTION

APPROVALS:

Originator (s)

Tyler Reinitz, P.E.

Erin F. Burke, P.E.

Manager (s)

Transmission and Distribution Engineering Services Tyler Reinitz, P.E.

Erin F. Burke, P.E.

Senior Manager Distribution Engineering Services Gordon Hayslip, P.E.

Rev. 2/28/20

TABLE OF CONTENTS

1.0 DEFINITIONS

2.0 RECORD DRAWINGS

3.0 MATERIALS AND EQUIPMENT

4.0 CONSTRUCTION AND ERECTION

5.0 STAKING

6.0 EXCAVATION, TRENCHING, AND BACKFILL

7.0 TRANSFORMERS, VAULTS, PEDESTALS, AND CONDUIT

8.0 UNDERGROUND CONDUCTORS

9.0 OVERHEAD CONDUCTORS

10.0 ANCHORING AND GUYING

11.0 DRILLING AND BACKFILL OF WOOD POLE, STEEL POLE,

AND ANCHOR HOLES

12.0 WOOD/LAMINATED POLES

13.0 CONCRETE FOUNDATION CONSTRUCTION

14.0 VIBRATORY CAISSONS

15.0 STEEL POLE STRUCTURE INSTALLATION

16.0 FIBER-OPTIC CABLE

17.0 EXISTING DISTRIBUTION AND TRANSMISSION SYSTEM

18.0 CONTRACTOR RESPONSIBILITIES

19.0 EMERGENCY AND STORM WORK

20.0 BREAKAGE AND LOSS ALLOWED

21.0 QUALITY AND COMPLETION OF WORK

22.0 SUBMITTALS

23.0 AVAILABILITY OF PERSONNEL AND EQUIPMENT

24.0 COORDINATION

25.0 CUSTOMER RELATIONS

26.0 BIDDING

27.0 ADDITIONAL HOURLY WORK

Public Utility District No. 1 of Snohomish County Everett, WA 98201

Specification No. 2313 Revision No. 11

STANDARD SPECIFICATION FOR TRANSMISSION

1.0 DEFINITIONS

1. “Contract Time” - The period of time for Final Completion of the Work, expressed in calendar days, in accordance with the requirements set forth in the Agreement.

2. “Crew Foreman” - shall be the CONTRACTOR’s Qualified Electrical

Employee and lead worker. The individual shall be familiar and knowledgeable in the construction and operation of the electric power generation, transmission, and distribution equipment involved, and such lines and/or equipment that concerns his/her position and who is fully aware of the hazards connected therewith and one who has passed a journey status examination for the particular branch of the electrical trades with which he/she may be connected.

3. “General Foreman” - shall be the CONTRACTOR’s Qualified Electrical

Employee and lead worker when two or more line crews are at work. The individual shall be familiar and knowledgeable in the construction and operation of the electric power generation, transmission, and distribution equipment involved, and such lines and/or equipment that concerns his/her position and who is fully aware of the hazards connected therewith and one who has passed a journey status examination for the particular branch of the electrical trades with which he/she may be connected.

General Foreman shall confine his/her activities to supervising the work.

4. "Inspector" - shall be the DISTRICT’S representative who inspects to ensure conformance with the DISTRICT’S Specifications and Standards.

5. "Primary Trenches" shall be any trench where the highest voltage cable in the trench is over 600 volts.

6. “Project Engineer” - shall be the DISTRICT’S representative responsible for advising the DISTRICT’S Project Leader regarding the design, testing, and engineering aspects of the construction project.

7. “Project Leader” - shall be the DISTRICT’S representative who administers the construction project and provides decisions on all Contract questions.

8. “Project Manager” - shall be the CONTRACTOR’s qualified individual directly responsible for the day-to-day management and administration of the Project. He or she is responsible for coordinating time, equipment, invoices, tasks and people for the Project.

9. "Secondary Trenches" - shall be any trench where the highest voltage cable in the trench is 600 volts or less.

Everett, WA 98201

Specification No. 2313 Revision No. 11

10. “Superintendent” - shall be the CONTRACTOR’s qualified lead worker. The individual shall provide on-site coordination for all aspects of the Project, including coordinating subcontractor, material and equipment, ensuring that specifications are being strictly followed, and that work is proceeding on schedule. A Crew Foreman may act as Superintendent.

11. "Work Day" - shall be each calendar day Monday through Friday, excluding

DISTRICT holidays. Holidays which fall on Saturdays are observed on the preceding Friday; those falling on Sundays are observed on the following Monday. DISTRICT holidays are as follows unless changed by the current list of DISTRICT holidays which the CONTRACTOR shall obtain from the DISTRICT prior to commencing any work:

(1) New Year's Day

(2) Martin Luther King JR's Birthday

(3) Presidents Day

(4) Memorial Day

(5) Independence Day

(6) Labor Day

(7) Veteran's Day

(8) Thanksgiving Day

(9) Day after Thanksgiving Day

(10) Christmas Day

12. “Waste Poles and Crossarms” - shall be all sections of wood poles topped off above the communications or otherwise cut into sections or pieces, and all wood poles and wood crossarms removed during construction with either no identifiable brand or a brand indicating the pole or crossarm was manufactured more than fifteen (15) years before the Notice to Proceed of the Contract.

13. “Best Management Practices (BMP's)” - are defined as practices detailed or referenced in this Specification to implement when performing excavation, trenching, backfilling and paving work. These practices will allow the CONTRACTOR to manage project water runoff and soil erosion.

Everett, WA 98201

Specification No. 2313 Revision No. 11

2.0 RECORD DRAWINGS

1. The CONTRACTOR shall maintain a set of Record Drawings showing all field changes with explanation as to the reason for change (e.g., Contract Amendments, DISTRICT’S instructions, Engineering Change Directives, etc.).

2. The Record Drawings shall be a clean set of Contract Drawings with changes clearly marked and updated daily.

3. Prior to the DISTRICT’S acceptance of the work, the CONTRACTOR shall furnish the DISTRICT with the set of Record Drawings.

4. The DISTRICT'S Project Leader and/or Inspector will review the Record

Drawings weekly to assure the Record Drawings are kept up-to-date on a daily basis. If the Record Drawings are not kept up-to-date, the DISTRICT may require an amendment reducing the payment for the Record Drawings.

3.0 MATERIALS AND EQUIPMENT

1. The DISTRICT will furnish the standard materials and system equipment necessary to complete the work, which are stocked and managed by the warehouse staff, including but not limited to poles, transformers, switches, regulators, capacitors, reclosers, pedestals, vaults, hand holes, hardware, and conductors.

2. The CONTRACTOR shall supply all backfill, restoration, boring, BMP materials, and any other materials specified in the Contract Drawings/Documents).

3. The CONTRACTOR will be responsible for the costs of additional materials or equipment required to repair damage caused by the CONTRACTOR during the course of the work, including materials and equipment lost by or stolen from the CONTRACTOR while under their control after pick-up at the DISTRICT warehouse and before returns to the DISTRICT.

4. The CONTRACTOR shall provide all labor, trucks and other labor-related equipment, cranes, tools, material pans, and instruments necessary to perform all work described in the Contract Drawings/Documents.

Everett, WA 98201

Specification No. 2313 Revision No. 11

5. All hardware, insulators and associated materials furnished by the DISTRICT shall be picked up by the CONTRACTOR upon approval by the Project Leader, Inspector, or designated representative between the hours of 9:00 a.m. to 12:00 p.m. and 12:30 p.m. to 3:30 p.m. at the DISTRICT’S Operations Center Warehouse, located at 1802 75th Street Southwest, Everett, Washington, 98203 or at a place directed by the Project Leader.

All poles, crossarms, transformers, vaults (except 6’-8” x 12’-8” x 8’-0” and larger), conduit and conductors shall be picked up by the CONTRACTOR at the DISTRICT’S Operations Center Pole Yard or at a place directed by the Project Leader. The 6’-8” x 12’-8” x 8’-0” and larger vaults will be delivered to the CONTRACTOR at the job site by the vault manufacturer.

The CONTRACTOR shall use the North Gate at the Operations Center for ingress and egress. During times of heightened security, the CONTRACTOR must be escorted by a DISTRICT representative while on DISTRICT property.

6. All DISTRICT-furnished materials must be inspected and receipted for by the CONTRACTOR on delivery, and the CONTRACTOR shall be responsible for the proper use and safeguarding of all such materials until final acceptance of the work by the DISTRICT. If, at any time, the CONTRACTOR discovers any defect in materials furnished by the DISTRICT, the CONTRACTOR shall immediately notify and submit to the DISTRICT a written report describing such defect. The CONTRACTOR shall immediately cease to use such defective items pending receipt of instructions from the DISTRICT.

7. Upon completion of the project, all DISTRICT-furnished materials not used in connection with the work and removed materials (except "waste poles and crossarms" and other waste, as described in Section 3.4) shall be returned to the rear of the DISTRICT’S Operations Center Warehouse, during normal business hours specified in Section 3. Such materials shall be identified with the applicable work order and task number. The cost of all unaccounted-for material, i.e., material furnished to the CONTRACTOR which is not either used for the work or returned to the DISTRICT, shall be deducted from amounts due the CONTRACTOR under this Contract.

Everett, WA 98201

Specification No. 2313 Revision No. 11

8. The CONTRACTOR shall dispose of all waste generated as part of the project in full compliance with all applicable regulations and DISTRICT procedures. During the course of the work, the CONTRACTOR shall remove and take possession of all waste poles and crossarms as defined in Section 1.0, Item 7. These wastes shall immediately become the CONTRACTOR’S responsibility. The CONTRACTOR must remove waste poles and crossarms from the job site upon completion of work in a particular area. Waste poles and crossarms are to be cut into lengths not to exceed six feet in length and disposed of as municipal solid waste at a permitted Snohomish County Solid Waste Facility. All wood poles and crossarms that are not considered to be waste poles and crossarms as defined in Section 1.0, Item 7 are to be returned to the DISTRICT’S Operations Center Pole Yard. No poles or crossarms are to be given to the public or to the CONTRACTOR’S employees. Upon request, the CONTRACTOR will provide the DISTRICT with evidence that all waste has been disposed of in compliance with all applicable regulations and DISTRICT procedures.

9. All returned material (except as described in Section 3.6 and 3.7) will be separated into the groupings listed below and placed in or on metal bins, cages, pallets, or reels (available from the DISTRICT’S Operations Center Warehouse), as appropriate. All removed material will be properly identified and tagged with Work Order and Task Number. All material will specify either over-issued, salvage, scrap, or retired, as appropriate.

• Bare Aluminum Wire

• Insulated Aluminum Wire

• Iron - Guy Insulators and Guards removed and sorted separately

• Meters

• Brass

• Bare Copper Wire and Solids

• Insulated Copper Wire

• Glass or Porcelain - Insulators

• Scrap Crossarms - all hardware removed and sorted separately

• Scrap Pole-all hardware removed and returned to the Pole Yard

• Nuts, Bolts, Washers

• PVC lengths Schedule 80 ten (10) feet or more, Schedule 40 twenty

(20) feet or more

• Other returned materials

Everett, WA 98201

Specification No. 2313 Revision No. 11

10. All new cable which exceeds the lengths set forth in the table below, shall be placed on individual reels, tagged by type of wire, Work Order and Task Number and returned to the DISTRICT’S Operations Center Pole Yard for reuse by the DISTRICT.

• #2 Primary, jacketed 200'

• 1/0 Primary, jacketed 200'

• 350 KCM Primary 300'

• 1100 KCM Primary 300'

• All other wire 300'

11. All Schedule 80 conduit greater than 10 (10) feet and Schedule 40 conduit greater than twenty (20) feet in length shall be tagged with a Work Order and Task Number and returned to the DISTRICT’S Operations Center Pole Yard for reuse by the DISTRICT.

12. All overhead transformers removed from poles shall have wire leads removed. Equipment Records Reports (Form #1510 - blank copies will be furnished with the contract package by the Project Leader or Inspector) shall be completed in detail and turned in with each transformer.

4.0 CONSTRUCTION AND ERECTION

1. Handling and Transportation of Materials: All materials shall be handled and transported by the CONTRACTOR with all due care and in such a manner as to preserve their true shapes and values. Material handling pans shall be supplied by the CONTRACTOR and used during the process of construction. The CONTRACTOR shall be responsible for all materials stored at the construction site, and the DISTRICT shall have no responsibility or liability in connection therewith.

2. Equipment and Methods:

a. Assembly and erection of structures, equipment and materials shall be conducted in such a manner and by use of such equipment as not to cause damage to any part of the structures, equipment or materials. Care shall be taken to maintain the true geometric shapes of the structures, equipment and materials.

b. The use of force which would distort members or damage galvanizing or paint is prohibited.

c. Wrenches used shall be the correct type and size for the job that will not deform nuts and/or cut or flake galvanizing.

Everett, WA 98201

Specification No. 2313 Revision No. 11

d. When lifting structures, equipment and materials, care shall be taken to prevent damage or injury to existing conductors, property and persons.

5.0 STAKING

1. The locations of structures and/or equipment to be installed hereunder shall be staked or painted by the DISTRICT prior to the CONTRACTOR starting work, but no guarantee is made that such stakes will remain in place.

2. It shall be the CONTRACTOR’S responsibility to verify that all necessary location markers are in place and in the proper location prior to starting construction.

3. The CONTRACTOR shall give the DISTRICT at least twenty-four (24) hours prior notice of the need for location markers to be reviewed and/or replaced.

4. Pole, vault, transformer, street light and secondary pedestal locations will be marked with thirty (30) inch white stakes (or PK Nails in hard surfacing) with pink flagging where possible. When a stake or PK Nails cannot be driven into the ground, white paint will be applied to mark locations.

5. Anchor stakes will mark the location of the anchor rod eye and will also be thirty (30) inch white stakes (or PK Nails in hard surfacing) marked "ANCHOR" with pink flagging where possible. When a stake cannot be driven into the ground, white paint will be applied to mark locations.

6.0 EXCAVATION, TRENCHING, AND BACKFILL

1. The CONTRACTOR shall comply with all applicable laws, regulations and other requirements of state and local authorities including, but not limited to, the State of Washington Standard Specification for Road and Bridge Construction (hereinafter referred to as the State of Washington Specification), the Snohomish County Public Works Engineering Design & Development Standards, Title 30, Snohomish County Unified Development Code, which includes Grading (SCC30.63B) and Drainage (SCC30.63A) Ordinances (hereinafter referred to as the Snohomish County Standards) and the Stormwater Management Manual for Western Washington including the BMP's referenced in that document when performing excavation, trenching, backfilling and paving work under or pursuant to this Specification.

Everett, WA 98201

Specification No. 2313 Revision No. 11

2. Trenching shall be performed according to this Specification and the Contract Drawings/Documents. All trenches shall be excavated to true and smooth bottom grades and shall provide uniform support for each length of conduit, equipment or device to be installed.

3. The CONTRACTOR shall perform trench excavation to the depth indicated in this Specification and the Contract Drawings/Documents.

notwithstanding the nature of the material encountered during such excavation. If field conditions prohibit the specified trench geometry, other configurations may be acceptable with prior District approval. All primary trenches shall have a minimum depth of thirty-six (36) inches of cover and all secondary trenches shall have a minimum depth of twenty- four (24) inches of cover. The width of trench will be as specified in the applicable Contract Drawings/Documents.

4. Except as otherwise provided by law, regulation, Paragraph 5 (below) or any other applicable requirement of state or local authorities, and except as otherwise provided in this Specification, all trenches (both primary and secondary) shall be backfilled with suitable backfill material compacted to at least 80 percent of the maximum dry density. Backfill in trench sections located either (i) beneath existing roadways, sidewalks or driveways, or (ii) in areas which the Contract Drawings/Documents, stakes or other markings indicate will be used for roadway, sidewalk or driveway purposes, shall be compacted with suitable backfill material to 95 percent of the maximum dry density, unless otherwise provided by Chapter 10 of the Snohomish County Standards, or any other law, regulation or other applicable requirement of state or local authorities.

Notwithstanding the foregoing, the CONTRACTOR shall, in any area which is required to be trenched and backfilled by the CONTRACTOR under this Contract, be required to compact backfill material only to the same percentage density as was provided by the Developer in such area prior to the commencement of work under this Contract (as determined by compaction testing in accordance with the provisions of this Contract). In the event of any uncertainty as to the compaction requirement applying in any area, it shall be the responsibility of the CONTRACTOR to inquire of the DISTRICT as to the applicable requirement. Suitable backfill material is defined as soil which is free of roots, bark, peat, soft clay, quicksand, mud, broken bituminous surfacing, soft organic material, stones larger than four (4) inches in breadth, junk, garbage, and other unsuitable debris.

If suitable backfill material is not available within the limits of the project, the CONTRACTOR shall furnish suitable material meeting the DISTRICT’S requirements, at the CONTRACTOR’S sole expense.

Everett, WA 98201

Specification No. 2313 Revision No. 11

5. All DISTRICT 6” feeder cable ducts and other ducts when specified in the Contract Drawings/Documents shall be encased in red Fluidized Thermal Backfill (FTB) which provides mechanical protection and uniform thermal characteristics. DISTRICT URD or communication ducts may be encased if required for supplemental protection or by the permitting agency.

Fluidized Thermal Backfill is a concrete mixture that is designed to conduct heat and allows power cables to run at higher ampacities than cables backfilled with concrete or CDF. See DISTRICT Material Standard

10021182.1 for mixture requirements.

6. For any excavation and trenching where the depth will exceed four (4) feet, the CONTRACTOR shall provide adequate safety systems, meeting the requirements of the Washington Industrial Safety and Health Act, RCW Chapter 49.17. The CONTRACTOR shall furnish the DISTRICT with a separate bid cost for all required safety systems as set out in the Proposal.

7. The CONTRACTOR shall remove, transport and dispose of, at an appropriate waste site, any material that does not meet the definition of suitable backfill material, as specified in Section 6.4 above. Such material shall be removed, transported and disposed of in accordance with all applicable requirements of state and local laws and regulations. All unsuitable material removed from the job site shall become the responsibility of the CONTRACTOR.

8. After all trenching has been backfilled, the CONTRACTOR shall, in the presence of the DISTRICT’S Project Leader or designated representative, verify the integrity of any conduit installed for future facilities by running a mandrel through the conduit, installing 1/2” minimum polyester pulling tape and plumbing/sealing/capping/marking the ends of the conduit as required by the DISTRICT. All equipment and materials necessary to accomplish this work shall be provided by the CONTRACTOR at the CONTRACTOR’S sole expense (except for pulling tape and end caps).

9. The CONTRACTOR shall place all pavement patches per Section 5-04 of the State of Washington Specification. Pavement patches shall be a minimum 4-inch depth HMA Cl ½” PG64-22(or as required by the permitting agency), and machine rolled flush with existing pavement. All joints shall be sealed with sealant.

Everett, WA 98201

Specification No. 2313 Revision No. 11

10. If so directed by the DISTRICT, the CONTRACTOR shall provide backfill compaction tests performed by a DISTRICT-approved testing laboratory.

The quantity and location of these tests shall be as specified by the DISTRICT. The DISTRICT will, pursuant to a Contract Amendment executed by the CONTRACTOR and the DISTRICT, reimburse the CONTRACTOR for the reasonable costs of any completed tests that demonstrate that the CONTRACTOR’S backfill compaction meets all applicable requirements of this Specification. However, if a compaction test demonstrates that any backfill compaction does not meet any applicable requirements of this Specification, the CONTRACTOR shall be responsible for all of the costs and expenses of such test and the DISTRICT shall have no responsibility therefore or liability in connection therewith.

11. The CONTRACTOR shall replace, in their entirety, any driveway aprons and ADA ramps that are damaged, sawed through, etc. during construction. CONTRACTOR may be required to upgrade replaced ADA ramps to current ADA and local agency requirements by the local agency.

Mailboxes moved during construction shall be replaced in approximately the same location as before construction. Damaged drainage lines shall be replaced to the standards and specifications of the city or county involved.

Damaged lawns and grass areas shall be restored with sod. Reseeding is not acceptable except under direct request from the property owner. The CONTRACTOR shall replace damaged trees or shrubs with the same type as existing, to the satisfaction of the customer, city and all others concerned. The CONTRACTOR shall leave streets, roads, driveways and private property in a condition satisfactory to the DISTRICT’S Project Leader, city or county engineer, property owners, and others concerned upon completion of the work.

12. Other utilities, such as gas, telephone, and/or TV, may desire to install their facilities in the new trench. This would be described as a Joint Trench. Details of the Joint Trench will be worked out with the other utilities at the Pre-Construction meeting. The DISTRICT will notify the CONTRACTOR of said utilities' joint participation. It shall be the CONTRACTOR'S responsibility to notify the other utilities of the CONTRACTOR'S work dates and to coordinate activities with such other utilities at no additional cost to the DISTRICT.

Everett, WA 98201

Specification No. 2313 Revision No. 11

7.0 TRANSFORMERS, VAULTS, PEDESTALS, AND CONDUIT

1. Transformers, vaults, pedestals, and conduit shall be installed in accordance with the DISTRICT’S Construction Standards and this Specification. The locations of such facilities shall be staked by the DISTRICT and shall not be relocated without the DISTRICT’S prior approval. Transformers, vaults and pedestals shall not be placed over another utility installation. It shall be the CONTRACTOR’S responsibility to notify the DISTRICT of any conflict in the field with other utilities.

Relocation, if necessary, shall be as directed by the Project Lead through an Engineering Change Directive (ECD) – see Section 13.0 of the General Conditions.

2. All vault covers shall be set level to within one (1) inch in ten (10) feet of the grade as staked outside of a traveled way and flush and level to the grade as staked when inside of a traveled way.

3. Handholes used for padmount transformers shall be set level to within one

(1) inch in ten (10) feet of the grade as staked outside of a traveled way and flush and level to the grade as staked when inside of a traveled way.

4. All grounding shall be installed in accordance with the DISTRICT’S

Construction Standards

5. Vault Safety

The CONTRACTOR and its employees shall comply with the following Safe Work Practice:

Guidelines for Working In or From Outside Energized Vaults

Scope

This guideline covers safe work practices when using proper tools and equipment for working on de-energized underground electrical cable(s)/equipment from in or outside a vault containing energized primary conductors. This guideline does not change current DISTRICT practice for employees using live line tools to perform work without the need for an outage on energized cable(s)/equipment from outside an energized vault when deemed safe (i.e. switching).

Everett, WA 98201

Specification No. 2313 Revision No. 11

References

November 3, 2004 Memorandum to Assistant General Manager of Distribution Services Division from the Joint Safety Committee, Guidelines for Working In or From Outside Energized Vaults. This guideline is provided in addition to what is covered by WAC 296-45, WAC 296- 45-215, WAC 296-45-255 (3&4), the DISTRICT’S Accident Prevention Manual - Underground Section, and NESC 323 (B).

Definitions

Vaults not intended for full physical entry:

• Vaults less than 6 feet from floor to inside roof.

• If circular in shape, less than 6 feet in diameter.

• If square, less than 6 feet from wall to wall.

Vaults intended for full physical entry:

• All other vaults and vault rooms.

Approach and Responsibility

a. Taking an outage before employees physically work on cable(s)/equipment from in or outside of an energized vault is the preferred work practice. This guideline would only apply if the Foreman and crew can determine and agree upon a method to perform the task safely based on the following guideline. In all cases, the Foreman has the responsibility to stop the job if it cannot continue to be accomplished safely.

b. The DISTRICT and the CONTRACTOR will provide the necessary tools, equipment and training for their respective line crew(s) to perform work in accordance with this guideline.

c. Each job should be evaluated according to the conditions that exist. When the job can be done safely, work will be performed in or from outside energized vault(s). This position is supported by the Washington Administrative Code (WAC 296-45-215).

d. An outage would not be required when:

i. Your work can be done safely and the vault is determined safe to work in by qualified employees.

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ii. The work can be done in a way that will allow for proper future operation of the cable(s)/equipment.

iii. The work is performed by at least two qualified electrical workers with Journeyman status.

e. Vaults not intended for full physical entry:

i. When safe and proper protection can be provided, employees may reach into an energized vault to perform work.

f. Vaults intended for full physical entry:

i. Proper protection (to include all confined space entry requirements) shall be provided and clearances observed for employees to perform work on cable(s)/equipment from in or outside of a vault having exposed energized equipment.

Unless proper protection is installed to cover the bottom of the energized switchgear with exposed electrical components to protect the employee from both electrical and fault exposures, an employee cannot stand or perform work directly beneath the energized switchgear.

ii. Racking of cables and terminating cables in larger vaults would depend on the size of cable and arrangement of cables/equipment in the vault. Safe and proper protection shall be provided.

iii. Live front padmount switchgear must be de-energized before any work can be done on the equipment inside the switchgear with the exception of switching, placing and removing protective barriers, testing, and grounding the equipment.

g. When appropriate, employees must install protection to prevent physical contact with energized cable(s)/equipment. Contact can be made between the de-energized cable(s) and energized cable(s)/equipment provided the cable(s)/equipment are properly insulated for the rated voltage. Rubber gloves can be worn as a secondary form of personal protection.

Everett, WA 98201

Specification No. 2313 Revision No. 11

6. Conduit installed by non-qualified electrical workers shall hold short a minimum of five (5) feet from any energized vault. Conduit shall enter vaults through the preformed knock-out locations provided in the vault, and shall be placed in such a way as not to interfere with other conduits.

All conduits entering vaults shall be sealed with concrete grout or DISTRICT-approved equal and shall be allowed to cure prior to backfilling around the vault.

7. Conduit installed in open trenches shall be fitted, glued together, placed in spacers and installed in the trench with an average minimum clearance of 1.5” between the conduits and the sides and bottom of the trench prior to backfilling, to allow for smooth and easy flow of backfill and adequate compaction around all conduits.

8. CONTRACTOR shall make sure that conduits are near round and not made oval either at the factory in the case of supplied HDPE conduit, or in the field due to insufficient conduit spacing, bedding, and compaction to support the conduits while being backfilled.

9. The CONTRACTOR shall prove all conduits using the following steps:

a. The CONTRACTOR shall conduits by pulling a mandrel and tightly fitted brush or swab through each conduit.

b. The mandrel shall be one-fourth (1/4) inch smaller diameter than the conduit and twelve (12) inches long, having a sharp shouldered ferrule at each end.

c. The CONTRACTOR shall connect a rope to the front and back of the mandrel and attached brushes to permit re-pulling if an obstruction is met.

d. The mandrel shall be pulled with the brush following through each conduit once in each direction to ensure there are no obstructions.

All mandrelling shall be done in the presence of a DISTRICT Inspector and shall be done after the conduit trench is backfilled and compacted.

e. Failure of any duct to pass the mandrel test is sufficient reason to reject the entire duct run, which shall be corrected at the CONTRACTOR'S expense.

f. After the cleaning operation the CONTRACTOR shall install and secure a pulling rope in the conduit and shall immediately and effectively plug all ducts to keep dirt and foreign matter out the conduit.

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Specification No. 2313 Revision No. 11

10. Conduit Installation via Directional Bore

a. The CONTRACTOR shall supply all Bore Materials unless otherwise specified. Said materials shall meet or exceed DISTRICT standards.

Conduit shall terminate at locations determined and marked by the DISTRICT. Conduit shall be proved and a pull rope shall be installed in each conduit run and the conduit ends plugged per DISTRICT standards. All open bore pits and trenches shall be backfilled and conduit ends marked with approved conduit markers.

b. If the DISTRICT determines that the conduit shall terminate inside an energized vault, the CONTRACTOR shall coordinate with the DISTRICT to have a DISTRICT crew on site to plumb the conduit into the energized vault.

c. The CONTRACTOR shall be responsible for the restoration of all surfaces disturbed in association with the directional boring work.

This includes paving, concrete and landscaping. All restoration work shall be per the DISTRICT standards and/or the associated jurisdiction's asphalt and concrete restoration requirements.

d. The CONTRACTOR shall de-bead all conduit welds.

e. The CONTRACTOR shall provide as-built documents that provide information about the conduit location and bore profile.

8.0 UNDERGROUND CONDUCTORS

1. Conductors to be direct-buried shall be hand-shaded prior to final backfill and compaction.

2. Conductors to be pulled in conduits shall be lubricated and pulled from the direction indicated on the Contract Drawings/Documents, and shall not exceed DISTRICT-approved pulling tensions.

3. 750-1100 KCM conductors shall not be kinked or bent to less than a thirty-six (36) inch radius when handling and racking cables in DISTRICT vaults and equipment.

4. 1/0 primary, #2 primary, 1/0 secondary, 4/0 secondary, and 350 KCM secondary conductors shall not be kinked or bent to less than a twenty-four (24) inch radius.

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Specification No. 2313 Revision No. 11

5. All primary and secondary cable terminations (i.e., stress cones, elbows, splices, and compression terminals) shall be installed per the manufacturer’s instructions and the DISTRICT’S Construction Standards.

6. Any damage to the new and existing conductor shall be called to the attention of the DISTRICT and shall be dressed, repaired, or the damaged section removed to the satisfaction of the DISTRICT.

This work shall be completed at the CONTRACTOR’S expense using DISTRICT materials paid for by the CONTRACTOR, unless it can be clearly shown that such damage was caused by the DISTRICT, in which event the work shall be completed with DISTRICT materials at the DISTRICT’S expense.

9.0 OVERHEAD CONDUCTORS

1. Stringing Conductor:

a) The handling, stringing, sagging and clipping-in or tying-in of the conductor shall be by methods which will prevent damage to the conductors and line structures in any way. Prevailing safety regulations and practices of the DISTRICT, the State of Washington and the National Electrical Safety Code shall be observed where they apply. The conductor shall not be permitted to contact the ground at any time, nor to contact any other wires or cables (whether energized or de-energized) or any poles, guard structures, etc., which may damage the conductors and line structures in any way. Stringing shall be by the tension method, applied so that the conductor will be installed without damage, and stringing tension shall not exceed the sagging tension for the section of the line involved.

b) Stringing sheaves shall run freely and be of sufficient strength to withstand, without damage, the loads imposed upon them. The sheaves shall be sized according to the conductor they are used for and shall be subject to approval by the DISTRICT’S authorized representative.

c) Stringing sheaves shall support the conductors at the same elevation as their final position on the insulator, unless otherwise directed by the DISTRICT.

d) Come-a-longs and other gripping devices shall be approved as suitable for size and strength of the conductor being installed by the DISTRICT’S authorized representative.

Everett, WA 98201

Specification No. 2313 Revision No. 11

e) Any damage to the new and existing conductor shall be called to the attention of the DISTRICT and shall be dressed, repaired, or the damaged section removed to the satisfaction of the DISTRICT. This work shall be completed at the CONTRACTOR’S expense using DISTRICT materials paid for by the CONTRACTOR, unless it can be clearly shown that such damage was caused by the DISTRICT, in which event the work shall be completed with DISTRICT materials at the DISTRICT’S expense.

f) Stringing lines shall be connected to the conductor with a swivel connection and a stocking-type grip approved by the DISTRICT. Tail wires of the grip shall be taped so that the grip will run freely in and not damage the sheave.

g) Adequate guard structures of a material which will not damage the conductors shall be supplied by the CONTRACTOR under the direction of the DISTRICT to provide protection for crossing over electric supply and communications lines, railroads, roads and highways. Guard structures shall be removed following stringing, sagging and clipping-in. The CONTRACTOR shall give (5) five working days notice to the DISTRICT and to the owner of any facility being crossed prior to the stringing. Supply lines with a potential of 2300 volts or above shall be guarded or de-energized. All lines de-energized for crossing shall be short-circuited and grounded at the site of the crossing.

h) All work shall be done in a manner to protect the general public, other workers and DISTRICT employees who may be working on lines crossed over or on other tasks in the general area.

2. Placing of Insulators and Insulator Hardware:

a) The insulators and insulator hardware shall be carefully handled while being transported, assembled and installed.

b) All insulators shall be thoroughly cleaned of all foreign material immediately before being installed.

c) Chipped or cracked insulators shall not be installed. All defective insulators shall be tagged bad order and returned to the DISTRICT’S Warehouse under direction of the DISTRICT.

d) Hardware shall be handled to prevent contact with the ground, and shall be clean when installed.

e) Suspension and deadend insulator assemblies shall be lifted near

Everett, WA 98201

Specification No. 2313 Revision No. 11 one end of the assembly only.

3. Sagging Conductors:

a) Conductors shall be sagged within seventy-two (72) hours of stringing by the CONTRACTOR in spans approved by the DISTRICT and in accordance with the sag tables on the Contract Drawings/Documents or in Construction Standards 4-8-4.0 through 4-8-5.0.

b) Sagging operations shall not be conducted when, in the opinion of the DISTRICT, wind or other physical condition may prevent satisfactory sagging. Any delay shall be at no additional cost to the

DISTRICT.

c) Snubs and tensioning equipment shall be located far enough from structures to avoid overloading of crossarms or insulators.

Anchoring of snubs to any structure will be permitted only with the DISTRICT’S prior approval.

d) Conductors shall be sagged by a method approved by the DISTRICT.

The CONTRACTOR shall provide one sagger for each span in which sags are to be measured. The CONTRACTOR shall provide accurate sagging instruments acceptable to the DISTRICT and shall complete and sign the appropriate DISTRICT conductor sagging record.

e) Conductors shall be sagged in one operation between dead-ends where, in the opinion of the DISTRICT, the length of the deadend section will permit attainment of the correct sag. All conductors in a section between the dead-ends shall be treated uniformly with respect to tension and time intervals during stringing and sagging.

4. Tying-in/Clipping-in:

a) Conductors shall be tied-in/clipped-in following sagging and dead-ending, preferably the same day as sagging, but not later than the third calendar day following sagging.

b) Suspension clamps shall be installed so that the insulator strings, if used, shall hang in a vertical plane through the points of insulator string attachment to the structure with the structure properly aligned.

5. All-aluminum and ACSR Conductor Splices and Compression Dead ends:

a) The DISTRICT’S Inspector shall be given two (2) hours prior notice

Everett, WA 98201

Specification No. 2313 Revision No. 11 that the CONTRACTOR is installing all-aluminum or ACSR splices and compression dead-ends so the DISTRICT’S Inspector may be present if desired.

b) The DISTRICT will furnish the splice material. The CONTRACTOR shall furnish compressor, tools and dies and shall be responsible to see that they are suitable for the conductor and splices.

c) Unless otherwise specified by the DISTRICT, all conductor splices shall be at least twenty-five (25) feet from supports after conductor is clipped-in and shall be at least fifty (50) feet with respect to distribution, and one hundred (100) feet with respect to transmission, from any compression fittings. Splices shall be avoided in crossing over major communication lines, railroads and highways.

d) Before making a splice, the conductor shall be laid out in a straight line for twenty-five (25) feet on either side of the splice. No splice shall be made within fifteen (15) feet of any cable grip holding the conductor in full or partial tension.

e) The ends of the conductor shall be cut back beyond any damaged or missing strands. Loose strands shall be tightened by twisting the outer layer in the direction of the lay and shall be seized with aluminum wire to prevent unraveling. The bore of all-aluminum sleeves and the surface of the conductor shall be thoroughly cleaned with a wire brush immediately prior to compression.

f) The tension splices and dead-ends shall be installed and compressed in accordance with the manufacturer's printed instructions, and in accordance with the following:

i. Lay the conductor alongside the splice or dead-end and mark the conductor with tape at the proper length so that when the conductor is inserted into the splice or dead-end up to the tape, the conductor will completely fill the body.

ii. Inject filler compound into the barrel of the aluminum dead-end or splice body, using a caulking gun, until the filler shows at the end of the body. Slight bends in the aluminum sleeve may be straightened by hammering, using a hardwood block to protect the barrel from direct hammer blows.

g) Jumper terminals and connectors shall be installed in accordance with the manufacturer's printed instructions and according to the instructions specified by the DISTRICT. Prior to bolting the terminal dead-end connection, both tongues shall be thoroughly cleaned with

Everett, WA 98201

Specification No. 2313 Revision No. 11 a wire brush, coated with joint compound and again abraded with a wire brush through the compound. Aluminum bolts shall be tightened with a torque wrench to torque standards as shown in the DISTRICT’S Construction Standard No. 4-10-8.0.

h) At the completion of pressing operations, all wrapping, binding and excess grease or compound shall be removed. All corners, sharp projections and indentations resulting from the compression shall be carefully rounded. All other edges and corners of the fittings that have been damaged shall be carefully rounded to their original radius. Nicked or abraded surfaces shall be carefully smoothed.

6. The existing conductors to be removed shall not be used to pull in the new conductors unless approved by the DISTRICT.

10.0 ANCHORING AND GUYING

1. A minimum of one (1) cubic yard of concrete, provided and installed by the CONTRACTOR, shall be used for each plate anchor unless otherwise specified. The CONTRACTOR shall tamp all other backfill to a uniform compaction with pneumatic tamping equipment. See details in the DISTRICT’S Construction Standard No. 4-6-2.0.

2. When necessary to break a concrete or asphalt surface, said surface shall be replaced or patched in a workman-like manner as detailed in the Contract Drawings/Documents and to the satisfaction of the DISTRICT.

3. When necessary to install anchors in seeded or grassy areas, these areas shall be restored, as nearly as possible, to their original condition and in a professional, quality manner as detailed in the Contract Drawings/Documents and to the satisfaction of the DISTRICT.

4. Helix anchors shall be driven into the ground to a depth, which will attain the required holding power. The CONTRACTOR’S equipment must be able to provide torque up to 8,000 foot-pounds when installing these anchors and must be equipped to use a torque indicator tool. The DISTRICT will approve the anchor installations, which shall be installed per the DISTRICT’S Construction Standard No. 4-6-1.0 through 4-6-3.0.

5. When the CONTRACTOR properly installs a helix anchor and submits proof in writing that the requirements of section 10.4 were completely met, but does not achieve adequate depth as determined by the DISTRICT’S Inspector, the Project Leader or Designee may direct the CONTRACTOR to remove the helix anchor and install a plate anchor. In such case, the DISTRICT shall pay the CONTRACTOR both unit prices for the anchor installations.

Everett, WA 98201

Specification No. 2313 Revision No. 11

6. Anchor leads are shown on the Contract Drawings/Documents and shall be measured along the ground from the pole center to anchor rod eye.

7. The CONTRACTOR shall not apply tension to anchor rods or helix shafts that will damage their holding capabilities.

8. All guys shall be assembled and installed in accordance with the details shown on the Compatible Unit drawings in the DISTRICT’S Construction Standards.

9. Anchors set in solid rock shall extend into the rock a minimum of three

(3) feet. The holes drilled in rock shall be completely filled with concrete grout or DISTRICT-approved equal and thoroughly rodded to fill all voids.

11.0 DRILLING AND BACKFILL OF WOOD POLE, STEEL POLE, AND

ANCHOR HOLES

1. All pole holes shall be drilled with straight sides eight (8) to ten (10) inches larger in diameter than the butts of the poles or as specified on the Contract Drawings/Documents and to the proper depth as noted in the DISTRICT’S Construction Standards or as specified on the Contract Drawings/Documents. Loose material shall be removed from the hole as much as practical.

2. Pole holes shall not be accomplished with a backhoe or similar equipment except in specific locations where, in the judgment of the DISTRICT, soil conditions make forming holes by pole hole digger or by hand impractical.

The CONTRACTOR shall obtain the DISTRICT’S approval before forming pole holes with a backhoe or other similar equipment.

3. Methods of drilling in rock shall be as approved by the DISTRICT.

4. After a pole is set into position, the suitable backfill as defined in section

6.4 shall be thoroughly tamped. Tamping of backfill shall be done in four

(4) inch lifts when hand tamping and in six (6) inch lifts when using hydraulic tampers. Excess soil shall be banked around the base of the pole to compensate for settling to a maximum height of ten(10) inches.

5. Upon completion of the work, the CONTRACTOR shall leave streets, alleys, roads, driveways and private property in a condition satisfactory to the city or county engineer, property owners and the DISTRICT.

6. Concrete backfill with a minimum strength of 3,000 psi shall be provided and installed by the CONTRACTOR when specified on the Contract Drawings/Documents.

Everett, WA 98201

Specification No. 2313 Revision No. 11

7. BMP's shall be used to properly drain any water from the construction sites, as referenced in Section 6.1 of this Specification.

12.0 WOOD/LAMINATED POLES

1. Poles shall be set and framed according to the Contract

Drawings/Documents and DISTRICT’S Construction Standards. Poles shall be set at the locations specified, truly perpendicular within the following tolerances:

a) The CONTRACTOR shall set each pole within four (4) inches of the correct location along the line or three (3) inches across the line.

b) The CONTRACTOR shall set each pole within four (4) inches of perpendicular, except as noted below.

c) Poles or structures supporting conductor angles or angle dead-ends shall be raked one and one-half (1.5) inches per ten (10) feet of pole length or as directed by the DISTRICT’S Engineer. Raking shall not be accomplished by pulling guys.

2. Poles shall be handled with care to prevent damage to the wood or the preservative treatment. Cant hooks, peaveys or pole tongs shall not be used in the butt area to three (3) feet above the groundline.

3. Setting depths and framing of poles shall be according to the DISTRICT’S Contract Drawings/Documents and DISTRICT Standards.

4. All poles shall be properly aligned within the tolerances specified above, both before and after stringing and clipping-in or tying-in the conductor.

5. All drilled holes and all cuts exposing untreated wood shall be treated generously with applications of DISTRICT-approved preservative, and unused holes in the pole shall be tightly plugged with treated wood plugs.

The DISTRICT-approved treatment and wood plugs shall be furnished by the DISTRICT.

6. Straightening existing poles shall be done by methods acceptable to the

DISTRICT. Generally, poles shall be straightened by excavating around the butt, then re-tamping with select backfill.

7. The CONTRACTOR shall identify each pole with permanent metal letters and numbers (supplied by the DISTRICT). This shall be completed in accordance with the Contract Drawings/Documents and DISTRICT Construction Standard No. 4-5-1.0.

Everett, WA 98201

Specification No. 2313 Revision No. 11

8. The CONTRACTOR shall manage all waste poles and crossarms and all returnable poles and crossarms in accordance with Section 3.0.

13.0 CONCRETE FOUNDATION CONSTRUCTION

1. General:

This section establishes the requirements for concrete foundation construction. The work includes excavations, concrete requirements, reinforcing steel, anchor bolts, concrete placement, testing, curing and protection as well as labor, transportation and other means required to construct the concrete piers for the Project in strict accordance with the Contract Drawings/Documents.

2. Concrete Material Specification:

a) Ready-Mixed Concrete: Ready-mixed concrete shall conform to

ASTM C 94, Standard Specification for Ready-Mixed Concrete.

b) Cement: Portland Cement shall conform to the Standard Specifications for Portland Cement, ASTM C 150, Type I.

c) Fly ash shall conform to the requirements of pozzolan Class C or

Class F of ASTM C 618 except that the maximum loss on ignition for Class F pozzolan shall be six (6) percent. Additionally, both Class C and Class F pozzolan shall have a maximum allowable free carbon content not to exceed three (3) percent as determined by ASTM E 30.

Either class of fly ash shall not contain more than one and one-half (1.5) percent of available alkalis as Na2O. Fly ash shall be protected, stored, handled, and sampled in the same manner as described above for Portland Cement.

d) Aggregate: Fine and coarse aggregates shall conform to the

Specifications for Concrete Aggregates, ASTM C 33.