21. Attachment A - Specifications AMD0001.pdf

26 August 2020

Attachment A

Kimball Substation Stage 04 - Specifications AMD0001

89503220BWA000032

KIMBALL SUBSTATION

STAGE 04

Spec. No. 976

SECTION C

DESCRIPTION/SPECIFICATIONS

NEBRASKA

SECTION C

DESCRIPTION SPECIFICATIONS

KIMBALL SUBSTATION STAGE 04

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT:

B. DESCRIPTION OF WORK:

C. DESCRIPTION OF BIDDING SCHEDULE ITEM:

1. Bidding Schedule item “Mobilization and preparatory work”

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK:

E. CONSTRUCTION SCHEDULE:

F. MATERIAL:

G. RIGHTS-OF-WAY:

H. GEOLOGIC INVESTIGATIONS:

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES:

J. WATER FOR CONSTRUCTION PURPOSES:

K. EXPLOSIVES AND BLASTING:

L. BURIED UTILITIES:

M. EMPLOYEE REQUIREMENTS:

N. ELECTRICAL MINIMUM APPROACH DISTANCES:

O. SUBMITTALS AND CORRESPONDENCE:

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Miscellaneous sitework”

2. Bidding Schedule item “Removing existing transmission line”

3. Bidding Schedule item “Demolition”

4. Bidding Schedule item “Stripping”

5. Bidding Schedule item “Excavation for substation site and access road”

6. Bidding Schedule item “Embankments”

7. Bidding Schedule item “Standard chain link fence”

8. Bidding Schedule item “Gravel surfacing”

9. Bidding Schedule item “Seeding”

DIVISION 3 – CONCRETE

A. GENERAL:

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Concrete foundations”

2. Bidding Schedule item “Cable trenches”

3. Bidding Schedule item “Concrete pull boxes and duct bank”

DIVISION 4 – SUBSTATION METALWORK

A. GENERAL:

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Steel structures, welded (galvanized)”

DIVISION 5 – TRANSMISSION LINE STEEL POLE STRUCTURES

A. GENERAL:

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule items for “Installing galvanized direct-embedded (DE) Government-furnished transmission line steel pole structures with concrete backfill”

DIVISION 7 – WOOD POLE STRUCTURES

A. DESCRIPTION OF BID ITEMS:

1. Bidding Schedule items for “Furnishing and Installing 115-kV Transmission Line Wood Pole

Structures”

2. Bidding Schedule Item for “Modify existing single pole tension structure 1-2”

DIVISION 9 – SUBSTATION - ELECTRICAL

A. GENERAL:

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule items “Power circuit breaker, 115-kV, 3,000 amps (Government-furnished)” and “Power circuit breaker, 34.5-kV, 2,000 amps (Government-furnished)”:

2. Bidding Schedule items “Disconnecting switch, manual group-operated, 115-kV, 2,000 amps” and “Disconnecting switch, manual group-operated, 34.5-kV, 2,000 amps”

3. Bidding Schedule item “Coupling capacitor voltage transformer, 115-kV, single-phase”

4. Bidding Schedule item “Combination interrupter switch with fuses, 14.4-kV”

5. Bidding Schedule item “Voltage transformer, 14.4-kV, single-phase”,

6. Bidding Schedule item “Neutral grounding resistor, 11 ohm, 208 V, single-phase”

7. Bidding Schedule item “Pad-mounted station service transformer”

8. Bidding Schedule item “Station service power voltage transformer, 115-kV, 100-kVA”

9. Bidding Schedule item “Single-pole fuse disconnecting switch, 115-kV”

10. Bidding Schedule item “Surge arrester, 115-kV, single-phase”

11. Bidding Schedule item “1/0 AWG, 25-kV, insulated copper cable”

12. Bidding Schedule item “500 KCMIL, 25-kV, insulated copper cable”

13. Bidding Schedule item “Automatic transfer switch, 240V, 600 amps, single-phase”:

14. Bidding Schedule item “Safety Switches”

15. Bidding Schedule item “AC distribution boards”

16. Bidding Schedule item “Lighting Contactor”

17. Bidding Schedule item “Grounding system”

18. Bidding Schedule item “Outdoor bus systems”

19. Bidding Schedule item “Associated electrical equipment and material”

20. Bidding Schedule item “Existing outdoor electrical equipment and material”

21. Bidding Schedule items “Furnishing 5/c No. 10 AWG control cable” and “Furnishing 12/c No. 10

AWG control cable”

22. Bidding Schedule items “Installing 5/c No. 10 AWG control cable” and “Installing 12/c No. 10

AWG control cable”

23. Bidding Schedule item “Vertical switchboard sections CHA1-CHA6, CHB1-CHB4 and termination cabinets CHT1 and CHT2 (Government-furnished)”

24. Bidding Schedule item “DC distribution boards”

25. Bidding Schedule item “Station battery system (Government-furnished)”

26. Bidding Schedule item “Battery chargers (Government-furnished)”

27. Bidding Schedule item “Electrical testing”

28. Bidding Schedule item “Fiber optic cable”

DIVISION 10 – TRANSMISSION LINE ELECTRICAL

A. DESCRIPTION OF BID ITEMS:

1. Bidding Schedule item “Approach spans for Archer-Sidney”

2. Bidding Schedule Item “Furnishing and Installing marker balls, 36-inch diameter for 3/8-inch diameter high strength steel overhead ground wire”

3. Bidding Schedule Item for “Furnishing and installing aerial patrol warning signs”

4. Bidding Schedule item “Approach spans for Kimball City”

5. Bidding Schedule item “Shoo-fly”

DIVISION 11 – SERVICE BUILDING

A. DESCRIPTION OF BID ITEM:

1. Bidding Schedule item “Service building”

B. STANDARD 11 SPECIFICATIONS:

C. SUBMITTALS:

04 22 00 UNIT MASONRY:

08 71 00 DOOR HARDWARE:

26 00 00 ELECTRICAL

26 05 00 COMMON WORK RESULTS FOR ELECTRICAL:

26 05 19 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES:

26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS:

26 05 53 IDENTIFICATION PLACARDS:

26 05 83 WIRING CONNECTIONS:

26 05 83.03 DOOR ALARMS:

26 06 20.16 ELECTRICAL EQUIPMENT AND CIRCUITS SCHEDULES:

26 09 23 LIGHTING CONTROL DEVICES:

26 24 00.16 PANELBOARDS:

26 27 26 WIRING DEVICES:

26 51 13 INTERIOR LUMINAIRES, LAMPS, AND BALLASTS:

26 51 14 EXTERIOR LUMINAIRES, LAMPS, AND BALLASTS:

26 53 00 EXIT SIGNS:

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

A. DESCRIPTION OF BID ITEMS:

DIVISION 14 – COMMUNICATION FACILITIES

A. DESCRIPTION OF BID ITEMS: The Bidding Schedule item “Communication facilities”

B. FOUNDATIONS:

C. WAVEGUIDE BRIDGE, SUPPORTS, AND ENTRIES:

D. GROUNDING SYSTEM:

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT:

Construct and complete Kimball Substation – Stage 04, in accordance with the Construction Contract (Standard Form 1442); the Contract Clauses; WAPA’s Construction Standards, including Standard 1

– General Requirements (September 2016), Standard 2 – Sitework (September 2016), Standard 3 – Concrete (September 2016), Standard 4 – Substation Metalwork and Transmission Line Lattice Structures (September 2016), Standard 5 – Transmission Line Steel Pole Structures (September 2016), Standard 6 – Light Duty Steel Pole Structures (September 2016), Standard 7 – Wood Poles (September 2016), Standard 8 – Glued Laminated Structures (September 2016), Standard 9 – Substation – Electrical (September 2016), Standard 10 – Transmission Line – Electrical (September 2016), Standard 11 – Service Building (September 2016), Standard 12 – Painting (September 2016), Standard 13 – Environmental Quality Protection (September 2016), Standard 14 – Communication Facilities (September 2016), Standard 15 – Drawings (September 2016); Standard Drawings; and these Project Specifications and Drawings.

If a conflict occurs between the Project Specifications and the Construction Standards, the Project Specifications shall govern. The Project Specifications and the Drawings are used to take exceptions or provide additions to the Construction Standards. Some paragraphs in the Construction Standards will not apply to this job.

WAPA’s Construction Standards, Standard Drawings, and Electrical Equipment Standards are available at https://www.wapa.gov/DoingBusiness/SellingToWestern/Pages/what-western-buys.aspx.

WAPA Project Specifications and Construction Standards are explained in Standard 1 – General Requirements, Section 1.1.1, “Standards and Project Specifications”.

B. DESCRIPTION OF WORK:

1. THE PRINCIPAL COMPONENTS OF WORK INCLUDE THE FOLLOWING:

a. Substation:

(1) Provide demolition and site development.

(2) Provide foundations for substation structures, electrical equipment and material, and the service building.

(3) Furnish and install galvanized steel structures.

(4) Furnish and install precast cable trench.

(5) Install Government-furnished power circuit breakers.

(6) Furnish and install disconnecting switches, voltage transformers, resistor, combination load interrupter and fuse disconnecting switches, distribution transformers, high voltage bus, grounding system, conduit, insulated cables, fiber optic cables, safety switches, terminal boxes, junctions boxes and outdoor lighting units.

(7) Furnish and install a site-built service building complete with electrical and mechanical systems.

(8) Install Government-furnished switchboards, cable termination cabinets, battery system and battery chargers.

https://www.wapa.gov/DoingBusiness/SellingToWestern/Pages/what-western-buys.aspx

(9) Furnish and install station service equipment and AC and DC distribution boards.

2. TRANSMISSION LINE:

a. Remove three (3) wood structures, associated conductors, overhead ground wires and assemblies.

b. Furnish and install two (2) wood pole structures complete with associated conductors, overhead ground wires and assemblies.

c. Furnish and install one (1) wood pole structure for Kimball city transmission line approach spans complete with associated conductors, overhead ground wire and assemblies. Make 115-kV connections for the City of Kimball shoo-fly.

d. Furnish and install two (2) wood structures for the 115-kV Kimball Substation shoo-fly.

e. Install two (2) Government-furnished steel pole structures with concrete backfill, associated conductors, overhead ground wires and assemblies.

f. Provide three 115-kV (3) approach spans and one (1) shoo-fly complete with associated conductors, overhead ground wires and assemblies.

Paragraphs “Description of Bidding Schedule Items” in Divisions – 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13 and 14 describe the work to be performed.

The work is located near Kimball, Nebraska, as shown on Drawing KB 0015.

C. DESCRIPTION OF BIDDING SCHEDULE ITEM:

1. Bidding Schedule item “Mobilization and preparatory work” includes the following:

a. Perform mobilization and preparatory work in accordance with Section H of the contract clauses.

b. Prepare and submit a Construction Schedule and furnish a Safety and Health Program.

c. Provide jobsite office trailer and the items listed below. Prior to any jobsite work, the

Contractor shall provide the office trailer for the exclusive use of WAPA.

(1) Relocation: If the Contractor changes the location of his office during the term of the contract, then the Contractor shall also move the mobile office trailer provided for WAPA, simultaneously with the transportation of his own unit.

(a) Installation: Install anchors and tie-downs for the trailer complying with local, State and Federal regulations. The office trailer shall be grounded. Entry points to the trailer shall be provided with stairways complying with OSHA (29 C.F.R. § 1926.1052).

(b) Office Space Requirements:

1) Size and Arrangement: At least 200-square-feet (minimum)

2) Heating and Cooling: Heating and cooling unit sized to provide adequate heating and cooling.

3) Lighting and Electrical: Adequate lighting and 110 V electrical outlets.

4) Utilities: Make all arrangements and pay all costs for providing utilities, including potable drinking water, 24 hour continuous electrical power and heating and cooling energy.

5) Toilet Facilities: Toilet facilities shall be provided in the immediate vicinity of the office and shall be maintained.

(2) Emergency Equipment: Provide and maintain the following emergency equipment:

(a) First aid kit that meets or exceeds ANSI Z308.1 (latest version) Class B, Type IV. Mount to the wall inside the workroom.

(b) Dry chemical fire extinguishers, classified 4-A:60-B:C, one to be located inside each entrance to the trailer.

(3) Window Coverings: Provide adjustable mini-blinds.

(4) Office Furniture: Provide good quality, fully functional, office furniture as follows:

QUANTITY DESCRIPTION

Five (5) Folding Office Chairs.

One (1) Office desk (30-inches by 60-inches (minimum).

Two (2) Office tables (30-inches by 60-inches (minimum).

One (1) Bookcase (30-inches by 13-inches by 48- inches).

Twelve (12) “Plan Hold” binders No. 1CB-24 (including one (1) plan rack).

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK:

1. COMMENCEMENT, PROSECUTION, AND COMPLETION OF THE WORK: See FAR 52.211- 10 in Section F of the solicitation/contract.

2. SUBMITTAL APPROVAL TIME: Except as otherwise provided for specific submittals, WAPA will require 20-calendar days for review of drawings or data submitted for approval.

3. COMMENCEMENT OF CONTROL WORK: Do not perform any control board or outdoor equipment wiring until receipt of Government-furnished wiring diagrams. WAPA will furnish outdoor wiring and schematic diagrams no sooner than 20-days after delivery of control boards.

Include these restrictions in the Construction Program.

4. CONSTRUCTION SCHEDULE

a. The Contractor shall not work more than 60-hours in one (1) calendar work week without prior approval from the Contracting Officer’s Representative (COR).

b. Make all outage requests in writing to the onsite WAPA representative a minimum of 30-days in advance. Meeting the minimum advance notice requirement of 30-days does not guarantee an outage will be approved. To improve the chances of an outage being approved, all outages should be submitted with as much advance notice as practicable.

Weather conditions and other system conditions such as other scheduled and nonscheduled (forced) outages must be evaluated against an outage request before approval can be granted. At any time because of transmission system electrical loads, system configurations, weather conditions or any condition which may cause an adverse effect on the transmission system operation or reliability, WAPA may deny an outage request or direct the Contractor to return facilities to operating conditions and release the applicable Special Work Permit.

c. Construction Stages: the contractor shall complete construction in the following consecutive stages (unless otherwise noted)

(1) Stage 01: Kimball Substation Shoo-fly

(a) Contractor shall install GFE steel monopoles and constructs KB bypass shoo-fly using temporary guyed wood poles.

(b) Contractor shall replace structure 62/5 and re-connects 115-kV conductors to shoo-fly and existing 115-kV lattice box structure (to feed KY1A, station service, and 34.5-kV loads during 115-kV yard construction).

(2) Stage 02: Kimball Substation 115-kV expansion

(a) Contractor shall complete all fencing to receive breakers by 3 May, 2021

(b) Contractor shall have the control building ready to receive GFE delivery of batteries, chargers, control panels to building by 1 June, 2021

(c) The Contractor shall coordinate with the COR to move communication batteries and associated equipment from the communication building to the new service building after the new building is ready for operation

(d) Contractor shall complete 115-kV yard construction

(e) After the Contractor has placed the control panels and made DC systems operational, the Contractor shall coordinate with the COR to provide WAPA four (4) months to complete control building and 115-kV commissioning (may be completed concurrently with Stage 03)

(3) Stage 03: Kimball 34.5-kV construction

(a) Contractor shall install City of Kimball shoo-fly.

(b) WAPA shall install the mobile transformer on the City of Kimball 115-kV line to feed 34.5-kV loads.

(c) Contractor shall remove two 115-kV spans (City of Kimball and Archer) from the existing 115-kV lattice box structure.

(4) Stage 04: Commissioning (may be completed concurrently with Stage 03)

(a) The contractor shall provide WAPA two (2) months to commission the 34.5-kV yard and KY1A transformer.

(5) Stage 05: Shoo-fly and building removal after completion of 115-kV and 34.5-kV commissioning

(a) Contractor shall remove both shoo-flys and install three 115-kV approach spans (Archer, Sidney, and Kimball).

(b) Contractor shall remove old communication and control buildings.

(c) WAPA transfers 34.5-kV loads from mobile transformer to 34.5-kV bays and disconnects the mobile transformer and associated equipment.

5. OUTAGE RESTRICTIONS: In addition to the restrictions listed in Construction Standard 1, the following Construction Schedule and outage restrictions shall apply:

a. The Contractor shall make outage requests in writing to the onsite WAPA representative a minimum of 60-days in advance of Kimball Substation shoo-fly and City of Kimball shoo-fly installation

b. The Contractor shall make outage requests in writing to the onsite WAPA representative a minimum of 60-days in advance of de-energizing the KY1A transformer and/or 34.5-kV bus

c. The Kimball substation shall remain energized until the contractor completes the installation of the shoo-fly structures and all conductors, overhead ground wires and assemblies required for the shoo-fly are on site and ready for installation.

d. The existing service building, communication building, and microwave tower shall remain operational until the new service building is ready for operation. The contractor shall provide temporary heat and power as required.

6. PROTECTIVE GROUND LEADS: See WAPA Construction Standards, Standard 1 “General

Requirements”, Section 1.4.14.3(1).

7. MAXIMUM AVAILABLE FAULT CURRENT: When protective ground leads are required, the protective ground leads shall be sized as defined below and shall meet the requirements of Standard 1 – General Requirements, Section 1.4 “Safety and Health” and the following:

a. The maximum available fault current in the 115-kV area is 2,985 amps and the X/R ratio is 3.9.

(1) A minimum of one (1) 1/0 grounds shall be used in the 115-kV area.

b. The maximum available fault current in the 34.5-kV area is 3,967 amps and the X/R ratio is 8.4.

(1) A minimum of one (1) 1/0 grounds shall be used in the 34.5-kV area.

c. The maximum available fault current in the 12.47-kV area is 4,765 amps and the X/R ratio is 12.3.

(1) A minimum of one (1) 1/0 grounds shall be used in the 12.47-kV area.

8. TYPICAL FOUNDATIONS FOR GOVERNMENT-FURNISHED ELECTRICAL EQUIPMENT:

Typical foundations are shown in Drawing KB 2304. WAPA will design these foundations after receipt of informational drawings and data from the equipment manufacturer. WAPA will forward the revised construction drawings for these foundations no later than 45-days prior to the “NLT” delivery date listed in the, “Material” section. If the “NLT” delivery date is adjusted by WAPA, forwarding of revised foundation construction drawings will be automatically adjusted in a like manner.

9. TYPICAL FOUNDATIONS FOR CONTRACTOR-FURNISHED ELECTRICAL EQUIPMENT:

Typical foundations are shown on Drawings KB 2303, KB 2305, KB 2306 and KB 2307.

Regarding foundations noted as “design not firm”: WAPA will design these foundations after receipt and final approval of informational drawings and data from the Contractor.

E. CONSTRUCTION SCHEDULE:

1. SUBMITTAL TIME: Prepare and Submit a Construction Schedule to the Contracting Officer (CO) within 10-calendar days after date of Notice to Proceed.

2. FORMAT AND DETAIL: Dates for each item of Government-furnished material shall be provided.

Do not program dates earlier than the estimated delivery dates shown in the “Material” paragraph.

F. MATERIAL: Furnish all material for completing the work, except material furnished by WAPA as listed below:

ITEM

ESTIMATED

WEIGHT

(LBS)

ESTIMATED

DELIVERY

DATE

ESTIMATED

COST

1. Four (4) 3-phase, power circuit breaker, 115-kV, 3,000 amp*

6,500 ea NST 5/1/21

NLT 5/14/21

$100,000 ea

2. Three (3) 3-phase, power circuit breaker, 34.5-kV, 2,000 amp

3,300 ea On site $60,000 ea

3. Ten (10) Vertical switchboard sections, CHA1-CHA6 and CHB1-

CHB4

800 ea NST 6/1/21

NLT 6/14/21

$55,000 ea

4. Two (2) Cable termination cabinets, CHT1 and CHT2

350 ea NST 6/1/21

NLT 6/14/21

$10,000 ea

5. One (1) 125 V DC station battery system

6,000 ea NST 6/1/21

NLT 6/14/21

$48,000 ea

6. Two (2) 125 V DC station battery chargers

500 ea NST 6/1/21

NLT 6/14/21

$10,000 ea

7. *Two (2) Type 168T-50 (DE) galvanized steel pole structure with maintenance provisions

45,800 ea *NST 10/21/20

NLT 11/7/20

$85,100 ea

8. Thirty-three (33) Left Anchor Plates galvanized steel – Mark

1FP-5L

1.3 ea In Loveland – coordinate with COR for pick up

$6.12 ea

9. Thirty-three (33) Right Anchor Plates galvanized steel – Mark

1FP-5R

1.3 ea In Loveland – coordinate with COR for pick up

$6.12 ea

NST – No sooner than.

NLT – No later than.

* to be unloaded by others

1. POINTS-OF-DELIVERY: Material furnished by WAPA will be delivered to Kimball Substation.

The Contractor is responsible for unloading of WAPA-furnished material. The Contractor shall inspect the equipment and report any damages to the Contracting Officer Representative (COR).

2. PROTECTION OF MATERIAL: If the control building is not complete, the contractor shall provide suitable indoor or warehouse storage for items 3 through 6. Provide protection against the elements after being removed from indoor storage and before installation.

G. RIGHTS-OF-WAY:

1. GENERAL: Transmission line right-of-way is 75-feet-wide, except at locations where guys and anchors require additional right-of-way. WAPA does not represent that the Contractor can gain access to every structure site or travel continuously along the transmission line.

Orient construction methods and equipment to utilize Government-furnished rights-of-way, or obtain additional temporary access without additional cost to WAPA. Any additional temporary access acquired by the Contractor shall have prior COR approval, since several areas of the transmission line have travel restricted areas. During the contract period, WAPA reserves the right to use Contractor-obtained access.

2. ACCESS EASEMENTS: WAPA has acquired access easements from existing public roads to the transmission line, and some off right-of-way access along the transmission line. This off right-of-way access route is to provide access to the transmission line structure sites not accessible by traveling the transmission line.

3. WORK ON THE RIGHT-OF-WAY:

a. General: Perform work on the rights-of-way necessary for access to or along the transmission line. Only that excavation, dozing, or blading absolutely necessary will be allowed. Excavation, dozing, and blading for ease of travel may only be performed after field review and approval by the COR. Unauthorized excavation, dozing, blading shall immediately be repaired, or WAPA will have the damage repaired and backcharge the Contractor for all costs involved.

b. Ease of Travel and Crane Landings: Excavation, dozing, or blading done for ease of travel on any easement or for crane landings shall be restored to the original contour of the land, and shall be compacted to a dry density not less than the natural in-place dry density of the surrounding earth. The use of water may be required to obtain the required density. Topsoil shall be stockpiled and spread on cuts prior to completion of work.

H. GEOLOGIC INVESTIGATIONS:

The Geotechnical Engineering Report prepared by Terracon Consultants, Inc., report No. 24195076, dated 11/06/2019 is incorporated into these Project Specifications as a requirement for design and construction of this project. The report is included as Appendix A.

The 8000-series geologic logs of subsurface explorations included in the “Drawings” Division constitute the information and records of geologic investigations for the work. Locations of subsurface investigations are shown on the Drawings.

Samples and cores of recovered material were not retained. Bidders shall obtain their own samples and perform tests on the material to evaluate properties, which they believe to be significant. WAPA does not guarantee that the geologic information and records show the conditions that will be encountered in performing the work, but only that the geologic information and records show conditions encountered at the particular point and time the information and records were obtained.

The geologic information may not indicate variations, such as those caused by seasonal fluctuations in rainfall and other factors, which may affect the water level. The Contractor shall determine the nature of material to be excavated, the difficulties of making and maintaining required excavations, and doing other work affected by geology and ground water elevations at the worksite.

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES:

Electric power up to a maximum of approximately 5 kVA for construction purposes will be available without cost. Source of supply is located in the receptacles throughout the substation. The Contractor may furnish power for his operations by other means at no additional cost to WAPA. Power made available by WAPA will be delivered as single-phase, 60 Hz, AC, at approximately 120-240 V.

Co-ordinate with the COR for establishing electric power service.

Until permanent power is available, provide temporary power to the existing service building, communication building and new service building to serve all building loads including HVAC, lighting and station battery system. Provide temporary heating prior to beginning finish work, sufficient to keep the interior of the building at a minimum of 70 degrees Fahrenheit for 24 hours a day, until permanent heating is available.

The Contractor may furnish power for his operations by other means at no additional cost to WAPA.

Make arrangements and provide all electric power for construction purposes. Provide necessary transmission lines, distribution circuits, transformers and other electrical equipment for distributing the power to the places of use. At contract completion, remove temporary electrical equipment and distribution lines.

J. WATER FOR CONSTRUCTION PURPOSES:

Furnish water for construction purposes. Make arrangements for obtaining the water, and provide for conveying the water to the points of use.

K. EXPLOSIVES AND BLASTING:

Explosives shall not be used.

L. BURIED UTILITIES:

Prior to excavation, examine the area and determine the location of buried utilities. Utilities shall be identified with a marker denoting the type of service.

M. EMPLOYEE REQUIREMENTS:

In addition to the requirements listed in WAPA Construction Standard 1.4.3 all employees are restricted from wearing a headset, headphone, or other listening device, other than a hearing aid or instrument for the improvement of defective human hearing, hearing protection worn as the hazard exists, or for communication purposes while on a WAPA jobsite.

N. ELECTRICAL MINIMUM APPROACH DISTANCES:

In addition to the requirements listed in WAPA Construction Standard 1.4.9 equipment other than cranes and derricks, conductive objects, or personnel, shall not be brought closer to energized facilities than the electrical minimum approach distances established by OSHA 1926.958(b), “Materials, Handling, and Storage”. The less stringent equipment clearance distances established by OSHA 1926.960, “Working On or Near Exposed Energized Parts”, Table V-5 and Table V-6, may only be used after the Contractor has completed and submitted WAPA’s Electrical Clearance Variance form and has received the signed form in return from the COR.

O. SUBMITTALS AND CORRESPONDENCE:

1. GENERAL: The Contractor shall furnish submittals via email as specified in the Construction Standards and this Project Specification to the email address listed under the Transmittal section below and with the following requirements:

a. Submittals shall be in standard PDF, Microsoft Word (.doc/.docx), Microsoft Excel

(.xls/.xlsx), Electronic CAD (.dwg) (AutoCAD 2010 or 2014), or formats. All submittals in .dwg format shall also be submitted in .pdf format.

b. All submittals shall include the WAPA Contract number with the three digit Specification number, if applicable (9503218CWA000XXX-XXX), WAPA project title, Bidding Schedule Contract Line Item Number (CLIN) and applicable division number.

c. Multiple CLIN’s on a single submittal are not permitted.

d. A cover transmittal letter in Microsoft Word or PDF format shall be included with each email submittal.

2. TRANSMITTAL: The Contractor shall submit all correspondence (Request for Information, Submittals, etc.) to the following email addresses care of the COR.

Rocky Mountain Region

ATTN: J5600

Email: RMR-J5600-CS@wapa.gov file://alkvcengm/S/specifications/2016%20Substation%20and%20T-Line/Guides/RMR-J5600-CS@wapa.gov

3. SUBMITTAL RESPONSE: WAPA will provide a response to all submittals in accordance with Division 1.D.2 of these specifications with an “Acceptable” or “Not Acceptable” status, with comments as appropriate to the email address where the submittals originated.

4. PHYSICAL SAMPLE SUBMITTALS: When physical specimens or digital media are required to be submitted for approval, (i.e. brick samples, roofing material samples, carpeting, CDs, DVDs, etc.) the Contractor shall provide a digital cover letter outlining the physical sample submittal prior to sending the sample(including tracking data when applicable), and shall deliver physical specimens to:

Western Area Power Administration

ATTN: A7900

12155 W. Alameda Parkway Lakewood, CO 80228-2802

5. PROJECT PROTOCOL:

a. Electronic Correspondence:

EMAIL SUBMITTAL FORMAT:

Subject Line in Email Submittal number, Subject, Applicable Standard Number, Project Name/Number, and Contract Number Example: Submittal 017, Steel Compression Dead Heads-Std 10, Kimball Substation Stage 04, 9503218CWA000XXXX-XXX

b. Payment Requests:

EMAIL PAYMENT REQUEST FORMAT:

Invoice number and Project Name/Number and Contract Number Example: Invoice 01, Kimball Substation Stage 04, 9503218CWA000XXXX-XXX

c. Certified Payrolls-Prime and Sub-Contractors:

EMAIL CERTIFIED PAYROLL FORMAT:

Certified Payroll (CP), Contractor’s names, Week ending (WE), and Project Name/Number, and Contract Number Example: CP-(Smith Inc., Bob’s Electrical), WE 09/12/18 & 09/19/18, Kimball Substation Stage

04, 9503218CWA000XXXX-XXX

d. Request for Information:

EMAIL (REQUEST FOR INFORMATION) FORMAT:

Request for Information (RFI), Project Name/Number, and Contract Number Example: RFI-003, Labeling Info, Kimball Substation Stage 04, 9503218CWA000XXXX-XXX

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Miscellaneous sitework” includes the following:

a. Clearing and grubbing, reuse the material grubbed to place back on cut slopes around the outside of the substation yard.

b. Providing HDPE pipe drains, with metal flared-end sections at inlets, as shown on the

Drawings.

c. Providing RCP (reinforced concrete pipe) culverts with flared-end sections in the inlets and outlets as shown on the Drawings.

d. Providing riprap and sand and gravel bedding for protecting earth slopes at inlets and outlets of HDPE pipe drains and culverts, in drainage ditches and elsewhere as shown on the Drawings.

e. Providing four strand barbed wire fence as shown on Drawings KB 2051.

f. Designing and providing a cattle guard with reinforced concrete foundations/headers, anchor bolts, and accessories for the passage of vehicular traffic through the four strand barbed wire fence line as shown on drawing 2051

g. Replacing and protecting existing gravel surfacing.

h. Providing a soil-applied herbicide where gravel surfacing is placed.

2. Bidding Schedule item “Removing existing transmission line” includes the following:

a. Removing electrical items and wood pole structures 62-5, 62-6 and 62-7 as shown in existing installation Drawing ARH-SD 4029, ARH-SD T400 and Table 2-1. Items removed from the existing line shall become the property of the Contractor and shall be removed promptly from the right-of-way, and may not be reused in constructing the new line. Remove two (2) Type 3T wood pole structures labeled 62-5 and 62-7 complete with guys and anchors. Remove one (1) Type HS wood pole structure labeled 62-6 complete with guys and anchors. Removal of conductor/wire shall be in accordance with Westerns construction standards and any restrictions listed in Division 13.

TABLE 2-1--WOOD POLE STRUCTURES TO BE REMOVED

WOOD POLE STRUCTURE TYPE OR MATERIAL QUANITY

Wood Suspension-type H-frame structures as noted on the plan and profile drawings 1

Wood Tension-type 3TA pole structures with guys and anchors as noted on the plan and profile drawings 2

b. Approximate quantities are listed in Tables 2-1 and 2-2. The Contractor shall determine the actual quantities to be removed and, regardless of the quantities removed, payment will only be made for the lump sum price bid in the Bidding Schedule.

c. Remove the conductors and overhead ground wires, complete with accessories, listed in

Table 2-2.

TABLE 2-2--ELECTRICAL ITEMS TO BE REMOVED

MATERIAL UNIT QUANITY

Three (3) 477.0-kcmil 24/7 ACSR “Flicker” Conductors FT 700 Two (2) 3/8”, high-strength steel, 7 strand overhead ground wires FT 700

Suspension Insulator assemblies with porcelain or polymer insulators

EA 3

Tension Insulator assemblies with porcelain or polymer insulators

EA 12

Suspension overhead ground wire assemblies EA 3

Tension overhead ground wire assemblies EA 8

d. Remove approach span on the Kimball city 115-kV transmission line. Refer to Drawing ARH

– SD T400 for details. The Contractor shall confirm all material quantities and types.

3. Bidding Schedule item “Demolition” includes the following:

a. Completely removing and disposing of concrete foundations designated on Existing Installation Drawing KB 2000.

(1) Regarding removal of foundation WT:

(2) Regarding removal of foundations CB1, CB2 and CB3:

b. Removing the chain link fence and gates as shown on Existing Installation Drawing KB 2011. It is a standard 7 foot-high chain link fence with a guard of three strands of barbed wire. The fence posts are set in concrete.

c. Removing and disposing of the High West Energy transformer structure and foundation located at the east end of the 34.5-kV Bus Structure.

(1) Regarding removal of the High West Energy transformer structure and foundation:

d. Removing and disposing of the Service Building and foundation as shown on

Existing Installation Drawing KB 2000. General arrangement, plan, elevations and sections are shown on Existing Installation Drawings KB 3000, 3001 and 3002. Removal includes all exterior concrete pads and mechanical equipment. Demolition sequencing shall be in accordance with Division 1 construction schedule restrictions. The resulting excavation shall be backfilled and compacted per Construction Standard 2 section 2.2.1.4. New gravel surfacing is required to be placed in the area after completion of compaction.

e. Removing and disposing of the wood pole as shown on Existing Installation

Drawing KB 2000.

(1) Regarding removal of the wood pole:

f. Removing and disposing of the Communication Building, waveguide bridge, communication building foundation including concrete steps and waveguide bridge foundations as shown on Existing Installation Drawings KB 2000 and KMW 7252. Demolition sequencing shall be in accordance with Division 1 construction schedule restrictions. Foundation information is not available, there is a possibility that excavation may be necessary. If an excavation is required, it shall be backfilled and compacted per Construction Standard 2 section 2.2.1.4. New gravel surfacing is required to be placed in the area after completion of compaction.

(1) Regarding removal of the Communication Building foundation, waveguide bridge and waveguide bridge foundations:

g. Removing and disposing of the following structures:

(1) One (1) 115-kV Bus Structure (KB 2004).

(2) One (1) 115-kV CCVT (VY1A3), identified as Capacitor Support in drawing KB 2009.

(3) One (1) Wave Trap Support (See picture above 3.a.(1)).

(4) One (1) 12.47-kV Transformer Support – Type I (KB 2601).

(5) Three (3) Double Switch Operating Platforms – Type VI (Near the

115-kV Box Structure, KB 2925).

(6) One (1) Equipment Cabinet Platform for the115-kV Circuit Interrupter.

(7) Gates and fence surrounding the existing communication building

(8) Existing barbed wire fencing on WAPA property identified in KB 0023

Drawings are included showing typical structure details for structures listed, except item (6).

4. Bidding Schedule item “Stripping” includes stripping 12-inch topsoil from the following areas on which compacted embankments are required to be placed and in which excavation is required. Reuse topsoil on areas to be seeded outside the existing substation.

5. Bidding Schedule item “Excavation for substation site and access road” includes required excavation, below the payline limits for stripping, for the following:

a. Substation yard to attain subgrade elevations under gravel surfacing and finished grade elevations where gravel surfacing is not required.

b. Grading the existing substation and communication yards to attain the elevations, as shown on Drawing KB 2052

c. Access road to attain subgrade elevations under gravel surfacing and finished grade elevations where gravel surfacing is not required.

d. Drainage ditches around substation yard, for access road and elsewhere as shown on the Drawings.

e. Riprap and gravel bedding at inlets and outlets of pipe drains and culverts.

6. Bidding Schedule item “Embankments” includes constructing and compacting embankments for the substation site, access road, slopes of ditches and elsewhere as shown on the Drawings.

a. The earthwork contractor should expect some difficulty in achieving proper compaction during embankment material placement on this site. Alternate compaction requirements shall be approved by a geotechnical engineer registered in the state of Nebraska. Alternates shall be submitted to the COR for approval.

Compaction requirements: General fill/backfill should meet the following compaction requirements.

Item Description Fill lift thickness • 9-inches or less in loose thickness when heavy, self-propelled compaction equipment is used

• 4 to 6 inches in loose thickness when hand-guided equipment (i.e. jumping jack or plate compactor) is used Compaction Requirements1

• At least 98% of ASTM D698 site grading fills and backfills placed below shallow foundations

• At least 95% of ASTM D698 for backfill around shallow foundations (above foundation bearing depth)

Moisture content on-site2

• -2 to +2% of the optimum moisture content as determined by the standard Proctor test

1. Place and compact embankment material in horizontal lifts, using equipment and procedures that will produce recommended moisture contents and densities throughout the lift. A construction disc or other suitable processing equipment will be needed to thoroughly process the materials and to aid in achieving uniform moisture content throughout the embankment material.

2. The contractor should expect significant moisture adjustment of native sand soils will be needed prior to or during compaction operations and import water will be required.

3. Care should be taken during the embankment material placement process to avoid zones of dissimilar fill. Improvements constructed over varying embankment material types are at a higher risk of differential movement compared to improvements over a uniform fill zone.

7. Bidding Schedule item “Standard chain link fence” includes providing standard chain link fence with gates and guard of three strands of barbed wire as shown on Drawings 31 2000, 31 2001, and 31 2038. Fence shall be erected as shown on Drawing KB 2051.

Electrical ground connections to the fence shall be included in the work for installing the grounding system for the electrical equipment

8. Bidding Schedule item “Gravel surfacing” includes providing 3" of ¾" washed crushed rock over 6" -NDOT road base as shown on Drawings KB 2051, KB2052 and KB 2054 and KB 2055.

9. Bidding Schedule item “Seeding” includes providing material, preparing areas to be seeded, spreading commercial fertilizer, sowing and maintaining grass seed, and protecting seeded areas. Areas to be seeded include:

a. Excavation and embankment slopes outside the gravel-surfaced area of the substation site

b. Disturbed areas, except those to receive gravel surfacing

c. Disposal areas

d. Seed: Parts Anatone’ Bluebunch Wheatgrass 3

Western Wheatgrass 2 Needle and Threadgrass 3 Green Needlegrass 2 Indian Ricegrass 3 Bottlebrush Squaretail 1 Scarlet Globe Mallow 1 Western Sweet Vetch 0.5 American Vetch 0.5 Green Rabbit Brush 1 Winterfat 2

Totals: 19

Seeding operations shall be performed only during the periods of March 1 to July 1 and August 1 to December 1. If conditions allow, dormant seeding may be permitted by the COR from December 1 through March 1. No seeding shall be performed when the ground is frozen, wet or otherwise untillable, or when even distribution of materials cannot be attained.

10. Bidding Schedule does not contain separate items for the following. Include these items in applicable Bidding Schedule items.

a. Excavations for foundations, structures, and trenches.

b. Placing and compacting earth material and backfill.

c. Providing gravelfills for the Service Building and under concrete foundations as shown on the Drawings.

d. Disposing of excavated material. Material from excavations not suitable or required for earthwork shall be removed from the substation and access road right-of-way. The Contractor shall make arrangements required for disposal of waste material in an approved landfill.

e. Expansion anchors and adhesive anchors.

DIVISION 3 – CONCRETE

A. GENERAL:

1. MATERIAL:

a. Cement: Type II cement.

b. Compressive Strength: 4500 psi minimum at 28-days for substation concrete.

c. Compressive Strength: 3000 psi minimum at 28-days for transmission line direct-embedded concrete.

d. Water-Cement Ratio: Net water-cement ratio, exclusive of water absorbed by the aggregates, shall not exceed 0.45 by weight.

e. Type A and D water-reducing and retarding admixtures may be used if approved by the COR.

f. Class F fly ash is required to neutralize severe alkali or ASR reaction in accordance with ASTM C 311 (regarding test data), ASTM C 618 (regarding material) and Standard 3 – Concrete (regarding WAPA-specific requirements). Proposed concrete mix designs shall incorporate fly ash up to a maximum of 20 percent; minimum 28-day compressive strength shall be maintained in mix design.

2. TEST FOR POTENTIAL REACTIVITY OF SAND AND COARSE AGGREGATE:

Perform test for each source used. Perform tests for potential reactivity for the sand and coarse aggregate to be used by the Contractor. If the tests determine the aggregate(s) to be unsuitable as a concrete aggregate, a suitable source will be obtained by the Contractor.

3. CURING: Exposed, formed surfaces of concrete foundations shall be cured with water, resin-base curing compound without fugitive dye, or by covering with polyethylene film.

4. REBAR DEVELOPMENT (LD) AND LAP LENGTH:

a. Class B lap splices apply unless noted otherwise; refer to Table 3 on Standard

Drawing 01 2004-1 General Outline and Reinforcement Notes.

b. Typical closed circular tie lap splice lengths for drilled piers and columns, 4,000-4,500 psi normal weight concrete, unless noted otherwise, are 18inches for No. 3 ties, 24-inches for No. 4 ties, and 30-inches for No. 5 ties.

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Concrete foundations” includes the following:

a. Earthwork, formwork, reinforcement, material used in concrete, void forming material, drilling and grouting anchor bars, galvanized anchor bolts, curing, finishing, joints, and other related work and material needed to complete the concrete construction.

b. Concrete foundations for steel structures.

c. Concrete foundations for electrical equipment.

d. Unwatering foundation excavations, if required.

e. Casing auger excavations, if required. Caving sands are present on this site.

The use of temporary steel casing should be anticipated to allow for proper drilling and cleaning of pier holes and placement of concrete.

f. Trial augering, if required.

g. Measurement for quantities for concrete foundations will be made on the basis of concrete quantities shown on Drawing KB 2015. Regardless of the concrete quantities actually placed, payment will be based on the quantities of concrete shown on the Drawing. Due to anticipated sloughing and raveling of the sand soils, foundation concrete quantities will likely exceed calculated geometric volumes.

2. Bidding Schedule item “Cable trenches” includes providing precast concrete cable trenches, vehicular crossings, complete with sandfill, polymer modified concrete covers and other accessories.

3. Bidding Schedule item “Concrete pull boxes and duct bank” includes providing concrete duct bank as shown on Drawings KB 1720, KB 1721, KB 1711, KB 1713, KB 3215 and KB 3216. Includes providing precast pull boxes, complete with gravelfill, covers, pulling hooks and other accessories (except electrical cable) as shown on Drawing KB 1720 and KB 1721.

Schedule 40 PVC shall be used for concrete encased duct bank. Duct spacers that maintain a minimum 1-1/2-inch separation between ducts are required every 5-feet.

Base spacers and intermediate spacers shall be equivalent to Cantex parts. Use intermediate spacers as a cap to prevent top conduit row from floating during encasement. The number of ducts, size and configuration, required depth from final grade to the top of duct bank is shown on Drawings KB 1720, KB 1721, KB 1711, KB 1713, KB 3215 and KB 3216. Duct encasement shall be a minimum of 2500 psi ready-mix concrete with 1/2-inch pea gravel. After concrete cures for 24-hours, backfill around duct bank with clean select soil and mechanically tamp in 8-inch lifts.

Pull box shall meet the general specifications of Concast pull box part number PB- 72-72-72-72-A or equal including technical scope, dimensions and design, performance and materials, micro-concrete, reinforcement, metal component performance and installation requirements. Location and size of holes to be provided are shown on Drawings KB 1720 and KB 1721.

DIVISION 4 – SUBSTATION METALWORK

1. GOVERNMENT-FURNISHED DRAWINGS: Existing shop drawings for steel structures are not available.

2. MEASUREMENT: Measurement for quantities for Bidding Schedule items “Steel structures, welded (galvanized)” will be made on the basis of weights calculated in accordance with LRFD, “AISC Code of Standard Practice for Steel Buildings and Bridges”, except that weights for nonrectangular shapes and plates are to be based on actual detailed dimensions.

a. Steel structure weights, calculated as noted above, shall be shown on the

Contractor-furnished final shop drawings and payment will be based thereon.

Steel estimated weights are shown on the specifications drawings for the structures requiring approval drawings as noted in the Bidding Schedule items “Steel structures, welded (galvanized)”.

1. Bidding Schedule item “Steel structures, welded (galvanized)” includes providing the following:

a. Three (3) 115kV Take-Off Structure - Type II

b. Eight (8) 115kV Bus Towers

c. Eight (8) 115kV Switch Support – Type II

d. Three (3) 115kV Switch Support – Type III

e. Thirty-seven (37) Bus Frames – Type I

f. Four (4) Bus Frames – Type II

g. Eight (8) Tee Poles – Type I

h. Twenty (20) Bus Poles – Type I

i. Fifteen (15) Equipment Supports – Type I

j. One (1) Equipment Support – Type II

k. One (1) Equipment and Bus Support – Type I

l. One (1) Station Service Equipment Support Frame

m. One (1) Fuse Disconnect Switch Support

n. Eighteen (18) Switch Operating Platform – Type V

o. Seven (7) Equipment Cabinet Platform – Type I

p. Two (2) Entry Platforms – Type I (Drawing 31_2051B)

q. One (1) Entry Platform – Type IV (Drawing 31_2051B) Approval drawings are required for the above structures.

The above material including connection bolts, nuts, washers and lock nuts shall be galvanized.

DIVISION 5 – TRANSMISSION LINE STEEL POLE STRUCTURES

The Contractor shall install two (2) new galvanized, direct-embedded Government-furnished steel pole structures and their components. Two (2) Type 168T (DE) structures and their components will be delivered to Kimball Substation, as shown on Drawing KB 0015. It is the Contractor’s responsibility to make arrangements for transport of poles from Kimball Substation to the structure sites for installation.

All new structures will include pole shaft sections, fixed climbing rung sections and rungs, connection bolts, nuts and locknuts. Also included (loose) are sixty-six (66) fall protection anchorage plates for every other step bolt. Steel pole shop drawings will be furnished when they are available.

1. Bidding Schedule items for “Installing galvanized direct-embedded (DE) Government-furnished transmission line steel pole structures with concrete backfill” includes providing all structure signs and assembling and installing the steel pole structures listed in Table 5-1 complete with the following:

a. Connection bolts, nuts and locknuts.

b. All pole shaft sections shall be jacked together in accordance with the

Manufacturer’s recommendations, as shown on the steel pole shop drawings.

c. Attach rungs, fall protection anchorage plates and install fixed climbing rung sections on the structures with bolts, nuts and locknuts. Attach fall protection anchorage plates at every other step bolt on fixed climbing rung sections, alternating left and right, in accordance with Standard Drawings 41 2701.

d. Excavation, polyurethane coating and concrete backfill for direct-embedded structures. Concrete backfill construction includes earthwork, unwatering excavation and casing auger excavation if required, form work, fabric, material used in concrete, curing, finishing, joints and other work and material needed to complete the required concrete construction.

e. Structure Embedment Depths, “E”, for direct-embedded structures shall be as listed in Table 5-1 with concrete back-fill. Refer to Division 3.

TABLE 5-1 – STRUCTURES EMBEDMENT DEPTHS

STRUCTURE

NUMBER

STRUCTURE

TYPE &

HEIGHT “H” 1

(FT)

EST.

NUMBER OF

POLE SHAFT

SECTIONS

EST. POLE

BASE DIA.

(IN)

EMBEDMENT

DEPTH “E” 2

(FT)

62/6 168T-50 (DE) 3 66” 50’-0”

62/7 168T-50 (DE) 3 66” 50’-0”

1 “H” refers to height portion of structure designation, which is the distance from the top of base plate to the bottom insulator attachment point.

2 Minimum foundation auger diameter for direct-embedded structures shall be the manufactured pole base outside diameter plus one-foot.

f.