21_-_Atch_B_GLA07_SPECS.pdf

GILA SUBSTATION

STAGE 07

Spec. No. 837

SECTION C

DESCRIPTION/SPECIFICATIONS

ARIZONA

SECTION C

DESCRIPTION/SPECIFICATIONS

GILA SUBSTATION STAGE 07

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT

B. DESCRIPTION OF WORK

1. Substation Work

2. Transmission Line Work

C. DESCRIPTION OF BIDDING SCHEDULE ITEM

1. Bidding Schedule item “Mobilization and Preparatory Work”

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK

1. Commencement and Completion

2. Submittal Approval Time

3. Commencement of Control Work

4. Outage Restrictions

5. Construction Restrictions

6. Protective Ground Leads

7. Typical Foundations for Government-Furnished Electrical Equipment and Oil Detention

Structures

8. Typical Foundations for Contractor-Furnished Electrical Equipment

E. CONSTRUCTION SCHEDULE

1. Submittal Time

2. Format and Detail

3. Material

4. Points-of-Delivery

5. Protection of Material

F. RIGHTS-OF-WAY

1. General

2. Access Easements

G. WORK ON THE RIGHT-OF-WAY

1. General

2. Ease of Travel and Crane Landings

H. GEOLOGIC INVESTIGATIONS

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES

J. WATER FOR CONSTRUCTION PURPOSES

K. EXPLOSIVES AND BLASTING

L. SUBMITTALS

1. General

2. Approval Time

3. Transmittal

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Miscellaneous Sitework”

2. Bidding Schedule item “Demolition”

3. Bidding Schedule item “Removing Existing Transmission Lines”

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 “High-Security Chain-link Fence”

8. Bidding Schedule item “Gravel Surfacing”

9. Bidding Schedule item “Oil Detention Basin”

10. Bidding Schedule item “Salvage Value of Existing Copper Conductor”

11. Bidding Schedule does not contain separate items

DIVISION 3 – CONCRETE

A. GENERAL

1. Material

2. Test for Potential Alkali Silica Reactivity of Sand and Coarse Aggregate

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Concrete Foundations for Substation Structures, and Equipment” i

2. Bidding Schedule item “Concrete Foundations for Transmission Line Steel Pole Structures”

3. Bidding Schedule item “Type C Cable Trenches”

4. Bidding Schedule item “Retaining Walls”

DIVISION 4 – SUBSTATION METALWORK

A. GENERAL

1. Government-Furnished Drawings

2. Measurement

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 item for Installing Government-furnished Transmission Line Steel Pole Structures on Concrete Foundations

DIVISION 7 – WOOD POLE STRUCTURES

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Furnish and Install 161-kV 3TAD Transmission Line Wood Pole Structure”

DIVISION 9 – SUBSTATION – ELECTRICAL

A. GENERAL

1. Bidding Schedule for Government-furnished items

2. Bidding Schedule for items not furnished by the Government

3. SEISMIC QUALIFICATION REQUIREMENTS

4. associated support structures provided for each piece of electrical equipment rated above 7-kV

5. Installation and painting of electrical equipment and material

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Power Transformer, 34.5Y-4.16-kV Delta, 7.5 MVA, three-phase

(Government-furnished)”

2. Bidding Schedule items “Power Circuit Breaker, 245-kV, 3,000 amps (Government-furnished)” 33

3. Bidding Schedule items “Disconnecting Switch, 230-kV, 3,000 amps, and Associated Support

Structures” and “Disconnecting Switch, 230-kV, 3,000 amps, with Grounding Blades and Associated Support Structures (Government-furnished)”

4. Bidding Schedule item “Pad-mounted Transformer, 4.16-kV, 300-kVA, three-phase”

5. Bidding Schedule item “Combination Interrupter Switch and Fuses, 14.4-kV”

6. Bidding Schedule item “Group Operated Disconnect Interrupter Switch, 14.4-kV”

7. Bidding Schedule item “Current Transformer, 230-kV, single-phase, and Associated Support

Structures (Government-furnished)”

8. Bidding Schedule item “Coupling Capacitor Voltage Transformer 230/161-kV, dual rated primary, single-phase, and Associated Support Structures (Government-furnished)”

9. Bidding Schedule item “Outdoor Switchgear Assembly”

10. Bidding Schedule item “Voltage Transformer, 4.16-kV, single-phase”

11. Bidding Schedule item “Neutral Grounding Resistor, 240-V, single-phase”

12. Bidding Schedule item “1/0 AWG, 15-kV, Shielded, Insulated Copper Cable”

13. Bidding Schedule item “1,000 kcmil, 15-kV, Shielded, Insulated Copper Cable”

14. Schedule item “Grounding System”

15. Bidding Schedule item “Outdoor Bus Systems”

16. Bidding Schedule item “Associated Electrical Equipment and Material”

17. Bidding Schedule item “Existing Outdoor Electrical Equipment and Material”

18. Bidding Schedule items “Furnish 5/c No. 10 AWG Control Cable” and “Furnish 12/c No. 10 AWG

Control Cable”

19. Bidding Schedule items “Install 5/c No. 10 AWG Control Cable” and “Install 12/c No. 10 AWG

Control Cable”

20. Bidding Schedule item “Vertical Switchboard Sections (8) CHA1 through CHA6, CHA8, and

CHA10 (Government-furnished)”

21. Bidding Schedule item “AC and DC Distribution Boards”

22. Bidding Schedule item “Station Battery System (Government-furnished)”

23. Bidding Schedule item “Station Battery Chargers (Government-furnished)”

24. Bidding Schedule item “Communication Racks”

25. Bidding Schedule item “Fiber Optics”

26. Bidding Schedule item “Electrical Testing”

DIVISION 10 – TRANSMISSION LINE ELECTRICAL

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Approach Spans”

2. Bidding Schedule item “Furnish and Install Marker Balls”

DIVISION 11 – SERVICE BUILDING

SECTION 01 00 00 – GENERAL

01 11 00 REQUIREMENTS

1. The Bidding Schedule item “Service Building”

01 33 00 SUBMITTALS

1. General

2. Contractor Review

3. Procedures

4. Shop Drawings

5. Product Data

6. Installation Data

7. Samples

8. Certifications

9. Warranties

10. Maintenance Material

11. Testing Reports

12. Calculations

13. Project Record Documents

14. Maintenance Data

01 78 00 OPERATION AND MAINTENANCE DATA

1. General

2. Quality Assurance

3. Manual Format

4. Manual Content

5. Instruction of Western Personnel

6. Submittals

SECTION 03 00 00 – CONCRETE

03 30 00 CONCRETE

1. General

SECTION 04 00 00 – MASONRY

04 26 13 MASONRY VENEER

1. General

2. Submittals

3. Quality Assurance

4. Protection

5. Environmental Requirements

6. Material

7. Preparation

8. Execution

9. Bracing of Masonry During Construction

10. Tolerances

11. Cleaning

SECTION 05 00 00 – METALS

05 12 00 STRUCTURAL STEEL

1. General Requirements

2. Quality Assurance

3. Submittals

4. Materials

5. Fabrication

6. Transportation, Handling, and Storage

7. Field Repairs

8. Erection

9. Quality Control

05 21 00 STEEL JOIST GIRDERS

1. General

2. System Description

3. Quality Assurance

4. Submittals

5. Materials

6. Fabrication

7. Transportation, Storage, and Handling

8. Field Repairs

9. Erection

10. Field Primer And Painting

05 31 00 STEEL DECK

1. General

2. System Description

3. Quality Assurance

4. Submittals

5. Material

6. Fabrication

7. Transportation, Storage, and Handling

8. Field Repairs

9. Execution

10. Touch-Up Paint

11. Painting

05 40 00 COLD-FORMED METAL FRAMING

1. General

2. Quality Assurance

3. Submittals

4. Material

5. Fabrication

6. Erection

05 50 13 MISCELLANEOUS METALS

1. General

2. Submittals

3. Material

4. Fabrication

5. Preparation

6. Execution

7. Schedule

SECTION 07 00 00 – THERMAL AND MOISTURE PROTECTION

07 22 00 ROOF AND DECK INSULATION

1. General

2. Submittals

3. Materials

4. Preparation

5. Execution

07 26 00 VAPOR RETARDER

1. General

2. Submittals

3. Materials

4. Installation

07 27 00 BUILDING AIR BARRIER SYSTEM

1. General

2. Submittals

3. Materials

4. Installation

07 41 13 METAL ROOF PANELS

1. General

2. Submittals

3. Performance

4. Material

5. Execution

07 42 13 METAL SOFFIT AND SIDING PANELS

1. General

2. Submittals

3. Material

4. Execution

5. Repairs

6. Painting

07 57 13 SPRAYED POLYURETHANE FOAM

1. General

2. Submittals

3. Materials

4. Installation

5. Cleanup

07 92 00 JOINT SEALANTS

1. General

2. Submittals

3. Quality Assurance

4. Materials

5. Execution

6. Schedule

SECTION 08 00 00 – OPENINGS

08 11 00 METAL DOORS AND FRAMES

1. General

2. Submittals

3. Product Handling and Protection:

4. Quality Assurance

5. Materials

6. Fabrication

7. Execution

8. Field Painting

9. Adjustment

08 71 00 DOOR HARDWARE

1. General

2. Submittals

3. Material

4. Installation

SECTION 09 00 00 – FINISHES

09 29 00 GYPSUM WALLBOARD SYSTEMS

1. General

2. Submittals

3. Material Storage

4. Environmental Requirements

5. Material

6. Installation

7. Painting

23 00 00 HEATING, VENTILATING AND AIR-CONDITIONING

23 02 00 BASIC MECHANICAL MATERIALS AND METHODS

1. General

23 05 93 TESTING, ADJUSTING AND BALANCING

1. General

23 30 00 DUCTWORK

1. General

2. Products

3. Execution

23 33 00 CONTROL DAMPER

1. General

2. Products

3. Execution

23 74 13 PACKAGED OUTDOOR, HEAT PUMP UNITS

1. General

23 81 26 WALL-MOUNTED HEAT PUMP SYSTEM

1. General

23 82 23 VENTILATION AND EXHAUST

1. General

2. Products

3. Execution

26 00 00 ELECTRICAL

1. General

26 05 00 COMMON WORK RESULTS FOR ELECTRICAL

1. General

2. Drawings

3. Submittals

4. Cutting and Patching

5. Painting

6. Acceptance Demonstration

7. Cleanup

26 05 19 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

1. General

26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

1. General

26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEMS

1. General

26 05 83 WIRING CONNECTIONS

1. General

2. Mounted Height

26 05 83.03 DOOR ALARMS

1. General

2. Material

3. Installation

26 06 20.16 ELECTRICAL EQUIPMENT AND CIRCUITS SCHEDULES

1. General

26 09 23 LIGHTING CONTROL DEVICES

1. Control Room

2. Exterior, Battery Room, Telecom Racks, and Storage Room

3. Yard

4. Wallplates

26 24 00.16 PANELBOARDS

1. General

26 27 26 WIRING DEVICES

1. Receptacles

2. Wall Plates

3. Circuit Breakers

26 51 13 INTERIOR LUMINAIRES, LAMPS, AND BALLASTS

1. Material

2. Illuminance

3. Installation

26 51 14 EXTERIOR LUMINAIRES, LAMPS, AND BALLASTS

1. Material

2. Illuminance

3. Installation

26 53 00 EXIT SIGNS

1. Material

2. Installation

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

A. CONTRACTOR-FURNISHED DATA

1. Bidding Schedule does not contain separate items

B. SPECIAL CONDITIONS

1. Biology

2. Compliance

SECTION 13.14--PREVENTION OF AIR POLLUTION

1. General

2. Machinery Air Emissions

3. Dust Abatemen

4. Lead-Based Paint and Asbestos-Containing Building Materials (ABM)

5. Sulfur Hexafluoride Emissions

SECTION 13.15—HANDING AND MANAGEMENT OF ASBESTOS

1. General

2. Transportation of Asbestos Waste

3. Certificates of Disposal and Receipts

SECTION 13.17--PREVENTION OF WATER POLLUTION

SECTION 13.18—TESTING, DRAINING, REMOVAL, AND DISPOSAL OF OIL-FILLED ELECTRICAL

EQUIPMENT

1. Oil Containing PCB

DIVISION 14 – MICROWAVE FACILITIES

A. GENERAL

1. Install the Following Government-Furnished Material

B. DESCRIPTION OF BIDDING SCHEDULE ITEM

1. The Bidding Schedule item “Microwave Facilities”

C. ERECTION

1. General

2. Anchor Bolts and Embedded Material

3. Base Plates

4. Structural Steel

5. Handling and Transportation of Tower

6. Bolting

7. Safety Climbing Device

D. FOUNDATIONS

1. General

2. Waveguide Bridge And Supports

E. GROUNDING SYSTEM

F. LIGHTNING PROTECTION

G. ANTENNAS AND WAVEGUIDES

1. General

2. Pipe Mounts

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT:

Construct and complete Gila Substation, Stage 07, in accordance with the Construction Contract (Standard Form 1442); the Contract Clauses; Western’s Construction Standards (September 2016), including Standard 1 – General Requirements, Standard 2 – Sitework, Standard 3 – Concrete, Standard 4 – Substation Metalwork and Transmission Line Lattice Structures, Standard 5 – Transmission Line Steel Pole Structures, Standard 7 – Wood Pole, Standard 9 – Substation – Electrical, Standard 10 – Transmission Line – Electrical, Standard 11 – Service Building, Standard 13 – Environmental Quality Protection, Standard 14 – Communication Facilities, Standard 15 – Drawings; 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 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.

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

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

B. DESCRIPTION OF WORK:

The principal components of work include the following:

1. SUBSTATION WORK:

a. Remove 161-kV bus, structures, and associated electrical equipment.

b. Provide eight (8) bays of 230-kV bus, structures, foundations, and associated electrical equipment.

c. Install new 34.5-kV station service transformer and associated buswork and electrical equipment.

d. Provide fiber optic cable.

e. Provide new service building.

f. Install a new 160-foot microwave tower.

2. TRANSMISSION LINE WORK:

a. Remove 0.4-miles of 161-kV transmission line and five wood pole structures.

b. Construct concrete foundations for four (4) transmission line steel pole structures with Government-furnished anchor bolt cages.

c. Install four (4) transmission line steel pole structures on concrete foundations.

d. Provide one (1) 161-kV wood pole structure.

e. Provide approach spans conductor, overhead groundwire, and associated assemblies.

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

The work is located in Yuma, Arizona, as shown on Drawing GLA 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 Western.

(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 Western, 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 Occupational Safety and Health Administration (OSHA) (29 C.F.R.

1926.1052).

(b) Office Space Requirements:

1) Size and Arrangement: At least 250-square-feet (minimum) consisting of two (2) separate rooms (one (1) office and one (1) larger workroom).

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, 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 by Affirmed Medical, Inc., Model No. 3503, or equal. Mount to the wall inside the workroom.

(b) Dry chemical fire extinguishers, classified 4-A:60-B:C, one (1) 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

5 Folding Office Chairs

1 Office Desk (30” x 60” minimum)

2 Office Tables (30” x 60” minimum)

1 Five-drawer File Cabinet

1 Bookcase (30’ x 13” x 48”)

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

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK:

1. COMMENCEMENT AND COMPLETION: Begin work and complete according to the requirements given in FAR Clause 52.211-10, “Commencement, Prosecution, and Completion of Work.”

2. SUBMITTAL APPROVAL TIME: Except as otherwise provided for specific submittals, Western will require 30-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. Western will furnish outdoor wiring diagrams, outdoor schematic diagrams, control board wiring diagrams, and control board schematic diagrams no sooner than 20-calendar-days after the delivery of the control boards. Include these restrictions in the Construction Schedule.

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

a. A 14-calendar day outage on the Gila-Knob 161-kV Transmission Line is allowed between October 01, 2018 and March 29, 2019.

b. A maximum of two (2), one day outages are allowed on the 34.5-kV Main Bus between

October 07, 2019 and November 01, 2019 to facilitate work associated with the 34.5-kV circuit for Transformer KW8A.

c. A 10-calendar day outage is allowed on the Yuma-Mesa Pumping Plant between

December 02, 2019 and December 12, 2019 for work on the 4.16-kV bus.

d. A 28-calendar day outage is allowed on both existing 161-kV transformers (KY5A and KY5B) between February 17, 2020 and April 03, 2020.

e. A 28-calendar day outage is allowed on the Dome Tap-Gila section of the Gila-Kofa

161-kV Transmission Line between March 09, 2020 and April 17, 2020.

f. A concurrent 28-calendar day outage is allowed on the Gila-Wellton Mohawk 161-kV Transmission Line between March 09, 2020 and April 17, 2020.

g. A 28-calendar day outage is allowed on the Gila-Knob 161-kV Transmission Line between

February 03, 2020 and April 03, 2020.

5. CONSTRUCTION RESTRICTIONS: The following Construction restrictions shall apply:

a. The concrete foundation for the new 34.5-kV transformer KW8A shall be completed by January 15, 2019.

b. The new control building shall be completed and operational functional no later than July

15, 2019.

c. The new microwave tower concrete foundations shall be completely installed prior to the construction of the concrete foundation for the new control building.

d. During all of the 161-kV transmission line outages, work will be required to be performed with the Gila-North Gila 69-kV circuit and Gila-Foothills 69-kV circuit energized. The Contractor must acquire HLO’s for these and other circuits as appropriate. The contractor is responsible for ensuring HLO’s are in place before performing work in close proximity to energized circuits and must coordinate through Western and as directed by the COR for acquisition of HLO’s.

The following work must be completed by the end of the first Gila-Knob 161-kV Transmission Line outage:

(1) At location of new Structure 0-2 (GLA-KNB circuit) --- perform auger excavation work, place rebar, place anchor bolts, and place concrete as required to construct the new foundation.

(2) At location of new double-circuit Structure 116-5 (which will support the GLA-KOF and GLA-WMS circuits) --- perform auger excavation work, place rebar, place anchor bolts, and place concrete as required to construct the new foundation.

e. The following work must be completed before any outages will be allowed on the 161-kV transformers KY5A and KY5B:

(1) The Yuma-Mesa Pumping Plant is currently fed at 4.16-kV from transformers KY5A and KY5B. New transformer KW8A (34.5 – 4.16 kV) will be installed as part of this Gila Substation, Stage 07 Project and will provide an alternative 4.16-kV power source for Yuma-Mesa Pumping Plant. This new power source must be in service before outages will be allowed on transformers KY5A and KY5B. The protective relaying for the 34.5-kV bay and new transformer KW8A will be located within the existing control building.

(2) An outage will be allowed to connect the new 4.16-kV circuit between new transformer KW8A and the existing 4.16-kV bus. Connection to the 4.16-kV bus will be done on the pumping plant side of existing disconnect switches 107 and 109. All components of the new circuit including interrupter switch WX4A, 15-kV cable circuit, and interrupter switch WX4B shall be made ready for service prior to the end of the outage. This work is required to be done when the Yuma-Mesa Pumping Plant is NOT delivering water (presently estimated to be between December 02, 2019 and December 12, 2019). No other outages will be allowed affecting the Yuma-Mesa Pumping Plant. Ensure necessary equipment, personnel, materials, etc. are available to complete the 4.16-kV connection work during the time frame allowed. The work on or in close proximity to the 4.16-kV bus must be coordinated such that the existing 4.16-kV bus could be returned to service quickly in the event that it becomes necessary to provide power to the Yuma-Mesa Pumping Plant.

Other factors may require the Yuma-Mesa Pumping Plant to adjust their outage schedule. Close coordination and communication between the Construction

Contractor, Western, and the Yuma-Mesa Pumping Plant is required to meet adjusted schedules, if any.

f. Construction of the new 161-kV switchyard must be completed by September 15, 2019 to include the new control building as well as new vertical switchboard sections and communications racks (including all testing & checkout performed by the Contractor), etc.

g. WAPA staff will begin commissioning of all new electrical equipment on

September 16, 2019 and will complete commissioning work by February 01, 2020.

h. Prior to February 01, 2020, the following 161-kV Transmission Line work must be completed:

(1) Construct foundation and erect steel pole structure at new GLA-KNB Structure 0-1

(256Y-55 deadend structure).

(2) String conductor and OGW from the new Knob (KNB) take-off-structure to new GLA-KNB Structure 0-1.

(3) Construct foundation and erect new (281N-55 deadend) Structure 116-6 (which supports the GLA-KOF and GLA-WMS circuits).

(4) String conductor and OGW for the GLA-KOF circuit from new Structure 116-6 to the new Kofa take-off structure.

(5) String conductor and OGW for the GLA-WMS circuit from new Structure 116-6 to the new Wellton-Mohawk (WMS) take-off structure.

i. The Yuma-Mesa Pumping Plant and GLA station service will be fed from the new transformer KW8A during the outage of the 161-kV transformers KY5A and KY5B.

j. Substation work described below shall be completed no later than March 27, 2020:

(1) In the area between Transformers KY5A and KY5B --- remove the existing bus, bus support structures & foundations, disconnect switch 5073/WY5C, disconnect switch 5173/WY5D, etc.

(2) In the area between Transformers KY5A and KY5B --- construct new bus support foundations, erect all new bus support structures & insulators, install all new rigid bus/strain bus/jumpers, etc.

(3) Complete all work to disconnect Transformers KY5A and KY5B from the existing

161-kV yard.

(4) Complete all work to connect Transformers KY5A and KY5B to the new 161-kV yard.

k. Between March 09, 2020 and March 24, 2020, WAPA commissioning personnel will perform final testing & commissioning work for transformers KY5A and KY5B.

l. Transmission Line work described below must be completed no later than April 03, 2020:

(1) Remove 4 spans of existing conductor and OGW between the existing Knob (KNB) take-off-structure and existing Structure 0-3.

(2) Remove existing Structures 0-1, 0-2, and 0-2A.

(3) Erect steel pole at location of new Structure 0-2 (246N-55 deadend structure).

(4) Erect steel pole at location of new Structure 116-5 (which supports the GLA-KOF and GLA-WMS circuits).

(5) Remove existing Structure 0-3.

(6) Construct new Structure 0-3 (3TAD wood pole deadend structure).

(7) Deadend existing conductor and OGW to the north side of new Structure 0-3.

(8) String conductor and OGW from new Structure 0-1 to new Structure 0-2.

(9) String conductor and OGW from new Structure 0-2 to new Structure 0-3.

(10) Energize GLA-KNB 161-kV Transmission Line, Transformer KY5A, and Transformer

KY5B through the new Gila 161-kV yard.

m. During the Dome Tap- Gila (DME-GLA) 161-kV Transmission line outage between March 09, 2020 and April 17, 2020, work required to connect the line to the new Gila Substation must be completed which includes, but is not limited to the following:

(1) Remove 2 spans of existing conductor and OGW between the existing Kofa (KOF) take-off-structure (in existing Gila Substation) and existing Structure 116-4.

(2) Remove existing Structure 116-5.

(3) Remove existing guys/anchors where required at existing Structure 116-4 (3T-1 wood pole deadend structure).

(4) Install new guys/anchors as needed to accommodate the change in deflection angle at existing Structure 116-4.

(5) String conductor and OGW for the DME-GLA circuit from existing Structure 116-4 to new Structure 116-5.

(6) String conductor and OGW for the DME-GLA circuit from new Structure 116-5 to new Structure 116-6.

n. During the Gila-Wellton Mohawk Switchyard (GLA-WMS) 161-kV Transmission line outage between March 09, 2020 and April 17, 2020, work required to connect the line to the new Gila Substation must be completed which includes, but is not limited to the following:

(1) Remove one-span of existing conductor and OGW between the existing Wellton-

Mohawk (WMS) take-off-structure (in existing Gila Substation) and existing Structure 0-3 (123N-55 deadend structure).

(2) String conductor and OGW for the GLA-WMS circuit from existing Structure 0-3 to new Structure 116-5.

(3) String conductor and OGW for the GLA-WMS circuit from new Structure 116-5 to new Structure 116-6.

o. All remaining work will be done by WAPA as follows:

(1) Energize the GLA-WMS line (which will now be connected to the new 161-kV yard) on or about April 17, 2020. WMS will then be fed from KNB via new 161-kV yard at

GLA.

(2) De-energize KOF-DME, DME-GLA, and DME-WMS circuits.

(3) Commission entire new relaying scheme between KOF, GLA, and WMS.

(4) Re-energize KOF-DME and DME-GLA.

(5) Re-energize DME-WMS.

6. PROTECTIVE GROUND LEADS: 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. Two (2) 1/0 AWG copper cables, two (2) 2/0 AWG copper cables, or one (1) 4/0 AWG copper cable per phase shall be used in the 4.16-kV area. One (1) 1/0 AWG copper cable (or larger) per phase shall be used in the 161-kV, 69-kV, and 34.5-kV areas.

7. TYPICAL FOUNDATIONS FOR GOVERNMENT-FURNISHED ELECTRICAL EQUIPMENT

AND OIL DETENTION STRUCTURES: Typical foundations are shown on Drawings GLA 2301, GLA 2302 and GLA 2303. Western will design these foundations after receipt of the seismic report and informational drawings and data, including the seismic report from the equipment manufacturer. Western 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 Western, forwarding of revised foundation construction drawings will be automatically adjusted in a like manner.

8. TYPICAL FOUNDATIONS FOR CONTRACTOR-FURNISHED ELECTRICAL EQUIPMENT:

Typical foundations are shown on Drawing GLA 2304. Regarding foundations noted as “design not firm”, Western will design these foundations after receipt and final approval of seismic qualification documents, and informational drawings and data from the Contractor.

E. CONSTRUCTION SCHEDULE:

1. SUBMITTAL TIME: Refer to Contract Clause 52.236-15. The Schedule shall be submitted to the Contracting Officer no later than 15-calendar-days after the issuance of the Notice to Proceed.

2. FORMAT AND DETAIL: Dates for each item of Government-furnished material shall be included in the submitted Construction Schedule. The Construction Schedule shall be provided in Microsoft Project 2007 format, PDF and shall clearly show a critical path base line. Do not program dates earlier than the estimated delivery dates shown in the “Material” paragraph.

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

ITEM

ESTIMATED

WEIGHT

(LBS)

ESTIMATED

DELIVERY

DATE

ESTIMATED

COST

1. One (1) Type 246Y-55 (BP) transmission line steel pole structure with anchor bolt cage

27,180 Onsite $55,176

2. One (1) Type 246N-55 (BP) transmission line steel pole structure with anchor bolt cage

30,380 Onsite $61,673

3. One (1) Type 281D-70 (BP) transmission line steel pole structure with anchor bolt cage

50,860 Onsite $103,247

4. One (1) Type 281N-55 (BP) transmission line steel pole structure with anchor bolt cage

53,930 Onsite $109,479

5. Ninety-four (94) left fall protection anchorage plates galvanized – Mark 1FP-5L

1.3 EA

NST 10/1/18

NLT 11/1/18

$6.12 EA

6. Ninety-four (94) right fall protection anchorage plates galvanized – Mark 1FP-5R

1.3 EA

NST 10/1/18

NLT 11/1/18

$6.12 EA

7. One (1) three-phase 7.5-MVA 34.5-kV pad mounted station service transformer

TBD

NST 12-1-18

NLT 1-31-19

$ TBD

8. Nine (9) 3-phase, power circuit breakers, 245-kV, 3,000 amp

15,740 EA Onsite $140,000 EA

9. Nine (9) Current Transformers, single-phase with support stands

1,800 EA

NST 11-1-18

NLT 11-30-18

$17,000 EA

10. Seventeen (17) Coupling capacitor voltage transformers 230/161-kV, dual rated primary, single-phase with support stands

1,500 EA

NST 11-1-18

NLT 11-30-18

$ 8,000 EA

11. Disconnecting Switches:

a. Eighteen (18) three-phase, 245-kV, 3,000 amp with support stands

10,125 EA

NST 10-17-18

NLT 12-15-18

$25,000 EA

b. Six (6) three-phase, 245-kV, 3,000 amp with ground blades with support stands

10,125 EA

NST 10-17-18

NLT 12-15-18

$39,000 EA

12. 160-foot microwave tower, bridge supports and pipe mounts

38,000 Onsite $62,000

13. Eight (8) Vertical Switchboard sections (CHA1 through CHA6, CHA8 and CHA10)

1,000 EA

NST 6-1-19

NLT 6-30-19

$65,000 EA

14. One (1) 125V station battery system (58 cells and rack)

195/cell 1428/25-ft rack

NST 6-1-19

NLT 6-30-19

$70,000

15. Two (2) Station Battery Chargers – BHC1 and BHC2

650 EA

NST 6-1-19

NLT 6-30-19

$10,000 EA

ITEM

ESTIMATED

WEIGHT

(LBS)

ESTIMATED

DELIVERY

DATE

ESTIMATED

COST

16. Forty Two (42) 161-kV LAPP Polymer Suspension Insulators for Tension Assemblies (Part No.

CS2-077-YB-200-B) without Corona Ring

18 EA

NST 10/1/18

NLT 11/1/18

$174 EA

17. Seventy Two (72) 230-kV LAPP Polymer Suspension Insulators for Tension Assemblies (Part No.

CS2-099-YB-200-B)

18 EA

NST 10/1/18

NLT 11/1/18

$174 EA

18. Six (6) 161-kV LAPP Polymer Line Post Insulators (Part No. CL2-085- 22-200 B) without Corona Ring

90 EA

NST 10/1/18

NLT 11/1/18

$388 EA

19. Fifteen (15) 230-kV LAPP Polymer Line Post Insulators (Part No. CL2- 085-22-200 B)

90 EA

NST 10/1/18

NLT 11/1/18

$388 EA

20. Nine (9) 230-kV LAPP Polymer Station Post Insulators (Part No.

CP2-089-23-200 A) with Flange End Fittings Both Ends

90 EA

NST 10/1/18

NLT 11/1/18

$388 EA

NST – No sooner than.

NLT – No later than.

4. POINTS-OF-DELIVERY: Material furnished by Western will be delivered to Western’s Gila

Substation, as shown on Drawing GLA 0015. The Contractor is responsible for the unloading of Western-furnished material, with the exception that the steel pole supplier will unload transmission line steel pole structures and anchor bolt cages. The Contractor shall inspect the equipment and report any damages to the COR.

5. PROTECTION OF MATERIAL: Provide climate controlled (minimum of 70 degrees Fahrenheit for 24-hours-a-day) indoor storage for items 12, 13, and 14. Provide protection against the elements after being removed from indoor storage and before installation.

F. RIGHTS-OF-WAY:

1. GENERAL: Transmission line right-of-way is 100-feet-wide, except at locations where guys and anchors require additional right-of-way. Western 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 Western. 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, Western reserves the right to use Contractor-obtained access.

2. ACCESS EASEMENTS: Western 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.

G. WORK ON THE RIGHT-OF-WAY:

1. 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 Western will have the damage repaired and forward for all costs incurred to the Contractor.

2. 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:

Geologic logs of subsurface explorations are included in the Division 15, “Drawings”. The geology report from these subsurface explorations are included in Appendix A. This constitutes 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.

Western 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 10-kVA for construction purposes will be available without cost. Source of supply is located in the receptacles throughout the existing substation. The Contractor may furnish power for his operations by other means. Power made available by Western will be delivered as three- or 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 service building to serve all building loads including HVAC, lighting, and station battery system.

Make arrangements and provide all electric power for construction purposes. Provide necessary 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. SUBMITTALS:

1. GENERAL: Submittals must be provided in accordance with the Construction Standards and Project Specifications. The Contractor shall furnish submittals electronically (i.e. email), unless otherwise specified by the COR. Submittals shall be sent to DSW-G5600-CS@wapa.gov in standard PDF or electronic CAD “*.dwg” (AutoCAD 2010) formats. All submittals shall include Western's Specification Number, Project Title, Transmittal/Submittal Number, and corresponding Item Number. Refer to the Submittal Log for the list of required submittals. This list may not be all-inclusive, and it remains the Contractor's responsibility to ensure conformance to the individual Specifications for possible additional submittal requirements.

The submittal cover sheet in Microsoft Word or PDF format shall be included.

In addition to the submittals required in the attached Submittal Log, the Contractor shall submit the following information electronically to DSW-G5600-CS@wapa.gov:

a. Payrolls.

b. Sub-Contractor List/Forms.

c. Citizenship Forms.

d. Environmental Submittals.

e. Request for Information (RFI).

f. Request for Equitable Adjustment (REA).

A submittal is required if the item is used in the performance of the contract.

2. APPROVAL TIME: Approval time for submittals shall be in accordance with the

“Commencement, Prosecution, and Completion of Work” paragraph.

3. TRANSMITTAL: The Contractor shall transmit specified non-electronic submittals to the COR at the following address:

Western Area Power Administration

ATTN: G5600

P.O. Box 6457

Phoenix, AZ 85005-5313

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEMS

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

a. Clearing and grubbing.

b. Provide HDPE pipe drains and reinforced concrete pipe culverts, with a flared-end section at inlets and outlets as shown on the Drawings GLA 2170, GLA 2171 and GLA 2173.

c. Providing reinforced concrete pipe storm drain as shown on GLA 2171 and GLA 2172.

d. Providing 48-inch precast concrete manholes w/ Steps, complete with miscellaneous metalwork, and other accessories as shown on GLA 2171 and GLA 2172.

e. Provide Stormwater Detention/Infiltration system with a 48-inch CDS hydrodynamic separator model # CDS2015-4-C water pretreatment from Contech or approved equal system as shown on GLA 2170, GLA 2171, GLA 2172, and GLA 2173. Verify with manufacturer cost of oversight and inspection.

DATA REQUIREMENTS

STRUCTURE ID Hydrodynamic Seperator

PEAK FLOW RATE (CFS) 9.71

RETURN PERIOD OF PEAK FLOW (YRS) 100

SCREEN APERATURE (MICRONS) 4700

PIPE DATA I.E. MATERIAL DIAMETER

INLET PIPE RCP 24"

OUTLET PIPE CMP 24"

RIM ELEVATION 199.65'

RETENTION/INFILTRATION SYSTEM

100 YEAR VOLUME (CUBIC FEET) 34,151

f. Provide riprap sand, fabric and gravel bedding for protecting earth slopes 3:1 or greater and at inlets and outlets of HDPE pipe drains and culverts, in drainage ditches, and elsewhere as shown on the Drawings.

g. Replace and protecting existing gravel surfacing.

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

i. Providing straw erosion control blankets on the outside of the south west corner of the substation where the slope is shallower than 4:1 as shown on drawing GLA 2170.

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

a. Completely remove concrete foundations designated on Existing Installation Drawings GLA 2002 and GLA 2004.

b. Remove the chain link fence and gate as shown on Existing Installation Drawings GLA 2002, GLA 2004 and GLA 2170. It is a standard seven-foot-high chain link fence with a guard of three-strands of barbed wire. The fence posts are set in concrete.

c. Remove and dispose of two (2) 161-kV Switch Supports Type IV (GLA 2153) located on foundations 6SS4.

d. Remove and dispose of one (1) Bus Pole Type X (GLA 2155-2) located on foundation

6BP5.

e. Remove and dispose of one (1) Ground Mast Type I (GLA 2159) located on foundation

6GM1.

Drawings are included showing typical structure details.

3. Bidding Schedule item “Removing Existing Transmission Lines” includes the following:

a. Remove the existing transmission line as shown on Existing Installation Drawing GLA-KNB 4000 between Stations (-)1+21 through 13+30. Removal includes wires, insulators, and all line hardware. Completely remove structures shown in Table 2-1, including all guys and guy anchors.

TABLE 2-1

GILA-KNOB TRANSMISSION LINE WOOD POLE STRUCTURES TO BE REMOVED

STATION NUMBER TYPE

2+14 0/1 70-60-70 3AT

6+55 0/2 65 HST

9+90 0/2A 65 HS

13+30 0/3 70-70-60 3A

b. Remove the existing transmission line as shown on Existing Installation Drawing KOF-GLA

4014 between stations 782+93 through 788+84. Removal includes wires, insulators, and all line hardware. Completely remove the structure shown in Table 2-2 including all guys and guy anchors.

TABLE 2-2

GILA-KOFA TRANSMISSION LINE WOOD POLE STRUCTURE TO BE REMOVED

STATION NUMBER TYPE

785+73 116/5 70-60-70 3AT

c. Remove the existing Gila-Wellton Mohawk Ligurta Transmission Line approach span, as shown on Existing Installation Drawing GLA-WML 4201 Rev. A, between Stations 0+00 and 2+47. Removal includes wires, insulators, and all line hardware.

d. Material removed from the existing transmission lines becomes contractor property, and shall be promptly removed from the rights-of-way and not used in construction of the new transmission lines.

4. Bidding Schedule item “Stripping” Perform Stripping in accordance with Standard 2 –

Sitework, Section 2.5.3 “Stripping” to the following areas on which compacted embankments and excavations are required.

a. Substation site.

b. Access road

5. Bidding Schedule item “Excavation for Substation Site and Access Road” includes required excavation, below the limits for scarified soil for the following:

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

b. Over Excavation is required on south west portion of yard overlapping the existing stockpile down to a depth equal to the majority of the yard after stripping. Material is to be placed back using proper compaction and moisture conditioning.

c. Regrade the existing substation yard to attain the elevations as shown on Drawing

GLA 2171.

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

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

Drawings.

6. Bidding Schedule item “Embankments” includes constructing and compacting embankments for the substation site, access road, and elsewhere, as shown on Drawing GLA 2171, per Construction Standard 2.

7. Bidding Schedule item “High-Security Chain-link Fence” includes providing high-security chain link fence with type I Double gate and guard of three (3) strands of barbed wire, as shown on Drawings 31 2000, 31 2001, and 31 2038. Fence shall be erected as shown on Drawing GLA 2170 and GLA 2171. Chain link fence materials shall be in accordance with ASTM A 392;

fabric mesh size (weave spacing) shall be 1-inch; fabric and bottom tension wire shall be 9 gauge nominal diameter after class 1 (1.20 oz/sf) zinc coating.

Electrical ground connections shall be included in the work for installing the grounding system for the electrical equipment in accordance with standard drawing 31 1060.

8. Bidding Schedule item “Gravel Surfacing” includes providing six-inch-thick gravel surfacing, gravel surfacing to extend 3 feet outside of fence line as shown as shown on Drawing GLA 2170.

9. Bidding Schedule item “Oil Detention Basin” includes providing materials, earthwork and installation of oil detention basin, as shown on Drawings GLA 2186 and GLA 2187.

a. Materials:

(1) Polyvinyl Liner: Provide 40-ounce polyvinyl liner equivalent to C.I.Agent Solutions, 11760 Commonwealth Dr. Louisville, Kentucky, (866) 242-4368, www.ciagent.com.

(2) Hydrocarbon Filtration Barrier: Equivalent to C.I.Agent Solutions at the above information. Area of hydrocarbon filtration barrier required shall be per the manufacturer’s recommendations.

(3) Fasteners: Galvanized Hilti or Ramset expansion anchors with washers.

(4) Gravel and Fill: Pea gravel under the liner and rock fill in the area surrounding the containment system shall be per the manufacturer’s recommendations.

b. Installation Contractor: The polyvinyl liner installation contractor shall be a manufacturer approved installer. Installation shall be in accordance with the manufacturer’s instructions.

c. Surface Preparation: Prior to installation, surfaces shall be level and free of all projections liable to damage the liner including sticks, roots, and other sharp objects.

d. Repair or Patching of Polyvinyl Liner: Where liner is installed around conduit, foundations, etc., fasten, repair, patch, or seal in accordance with manufacturer’s instructions. Fasten liner to concrete foundations, as shown on Drawing GLA 2187.

e. Oil containment design shall be submitted for approval.

10. Bidding Schedule item “Salvage Value of Existing Copper Conductor” includes a credit back to the Government with a salvage value for approximately 7000-feet of 300-kcmil, Anaconda Type 178R2, copper hollow “I-beam” conductor that becomes the property of the Contractor as part of this demolition work.

The existing conductor characteristics are given in Table 2-3, and the weight is approximately 0.935-pounds-per-foot. The amount entered into the bidding schedule shall be a negative amount and shall reduce the total for the Bidding Schedule.

TABLE 2-3 – CONDUCTOR CHARACTERISTICS

CONDUCTOR DESIGNATION

ANACONDA 300 KCMIL COPPER

TYPE 178/R2 (HOLLOW “I-BEAM”)

Overall Diameter (IN) 0.750

Strands (number) 12

Strand Diameter (IN) 0.1507

11. 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. Provide gravelfills for the Service Building and under concrete foundations as shown on the Drawings.

c. Provide sand backfill around buried conduit and plastic lumber over the sand as shown on

Drawing 31 1006. Associated electrical equipment and material.

d. Disposal 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 within WAPA property.

e. Expansion anchors and adhesive anchors.

f. Case excavations if required.

g. Unwater excavations if required.

h. Comply with applicable environmental standards.

i. Use sand onsite for needed backfill material.

DIVISION 3 – CONCRETE

A. GENERAL:

1. MATERIAL:

a. Cement: Type IIA cement for substation concrete and Type V cement for transmission line concrete. Types are according to ASTM C 150.

b. Compressive Strength:

(1) 4000 psi at 28-days for substation concrete.

(2) 4500 psi at 28-days for transmission line concrete.

c. Water-Cement Ratio: Net water-cement ratio, exclusive of water absorbed by the aggregates, shall not exceed 0.52 by weight.

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

COR.

e. 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 ALKALI SILICA REACTIVITY OF SAND AND COARSE

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

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Concrete Foundations for Substation Structures, and Equipment” includes the following:

a. Earthwork, formwork, reinforcement, material used in concrete, drilling and grouting anchor bars, 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. Unwater foundation excavations, if required.

e. Case auger excavations, if required.

f. Measurement for quantities for concrete foundations will be made on the basis of concrete quantities shown on Drawing GLA 2003-3. Regardless of the concrete quantities actually placed, payment will be based on the quantities of concrete shown on the drawing.

2. Bidding Schedule item “Concrete Foundations for Transmission Line Steel Pole

Structures” includes the following:

a. Constructing concrete foundations for four (4) steel pole structures as listed in Table 3-1, as shown on Drawings GLA-KNB 2100 and KOF-GLA 2100, with Government-furnished anchor bolt cages.

TABLE 3-1 – CONCRETE FOUNDATIONS

STRUCTURE

NUMBER

STRUCTURE TYPE &

HEIGHT

“H” 1 (FT)

0/1 246Y-55 (BP)

0/2 246N-55 (BP)

116/5 281D-70 (BP)

116/6 281N-55 (BP)

1”H” refers to the height portion of the structures designation, which is height from the top of base plate to bottom insulator attachments.

(1) Structure No. 0/1, Type 246Y-55 (BP), and Structure No. 0/2, Type 246N-55 (BP), as shown on Drawing GLA-KNB 2100. Foundation locations are shown on Drawing GLA-KNB 4000.

(2) Structure No. 116/5, Type 281D-70 (BP), and Structure No. 116/6, Type 281N-55

(BP), as shown on Drawing KOF-GLA 2100. Foundation locations are shown on Drawings KOF-GLA 4014 and GLA-WML 4201.

b. Concrete construction includes earthwork, formwork, reinforcement, anchor bolts, material used in concrete, curing, finishing joints and other related work, and material needed to complete the required concrete construction, in accordance with Standard 3.

c. Unwater foundation excavations, if required.

d. Case auger excavations, if required.

e. Measurement for quantities will be made on the basis of…