STATEMENT OF WORK

For Construction Services

FOR

MOUNTAIN HOME AFB

REPAIR BASE SWITCHING STATION,

BLDG 1406 & Bldg 1017

PROJECT

22 January 2026

TABLE OF CONTENTS:

SECTION PAGE

TITLE PAGE

TABLE OF CONTENT

CHANGE LOG

1.0 INTRODUCTION

2.0 BACKGROUND INFORMATION

3.0 PROJECT INFORMATION

4.0 PERIOD OF PERFORMANCE

5.0 GENERAL PROVISIONS

6.0 SCOPE OF EFFORT

7.0 GENERAL REQUIREMENTS

8.0 REQUIREMENTS - ENVIRONMENTAL

9.0 REQUIREMENTS – LAYDOWN YARD

10.0 REQUIREMENTS – POWR STUDY

11.0 REQUIREMENTS – TEMPORARY CONSTRUCTION POWER REQUIREMENTS

12.0 REQUIREMENTS – SCADA COMMUNICATIONS

13.0 REQUIREMENTS – COORDINATION WITH IDAHO POWER COMPANY

14.0 REQUIREMENTS – MASS NOTIFICATION SYSTEM

15.0 REQUIREMENTS – SPECIAL CONSIDERATIONS

16.0 REFERENCES

17.0 MANDATORY CRITERIA AND STANDARDS

18.0 USG FURNISHED EQUIPMENT (GFE)

19.0 REVISIONS AND ENGINEERING CHANGES

20.0 QUALITY CONTROL

21.0 WORKING HOURS

22.0 SECURITY CONSIDERATIONS

23.0 SAFETY AND HEALTH

24.0 PRECAUTIONS AGAINST HAZARDS

25.0 SMOKING IN AIRFORCE FACILITIES

26.0 PROGRAM MANAGEMENT

27.0 PROJECT EXECUTION AND TECHNICAL CAPABILITY

FIGURES

Figure 1 -- MHAFB SUBSTATION BASE LEVEL OVERVIEW Figure 2 -- EXISTING MHAFB SUBSTATION STREET LEVEL OVERVIEW Figure 3 -- EXISTING MHAFB DISTRIBUTION SUBSTATION Figure 4 -- "EXISTING" MHAFB SWITCHING STATION Figure 5 -- MHAFB SUBSTATION “EXISTING” SINGLE-LINE DIAGRAM Figure 6 -- RELOCATION OF MHAB SWITCHING STATION Figure 7 -- RELOCATION OF MHAB SWITCHING STATION Figure 8 -- "NEW" MHAB SWITCHING STATION OVERVIEW Figure 9 -- VACUUM CIRCUIT BREAKERS LAYOUT Figure 10 -- PHYSICAL ROUTING OF CONDUITS Figure 11 -- LAYDOWN YARDS LOCATION Figure 12 -- MATERIAL LAYDOWN YARD LOCATION Figure 13 -- JOBSITE LAYDOWN YARD LOCATION Figure 14 -- TEMPORARY CONSTRUCTION POWER LOCATIONS

CHANGE LOG

Revision Date Author Page #’s Affected Description of Change

Original 22Jan2026 EEB All Initial SOW

STATEMENT OF WORK (SOW)

For Construction Services

FOR

Mountain Home AFB Repair Base Switching Station, Bldg 2406 & 1017

22 Jan 2026

1.0 INTRODUCTION

1.1 The United States Government (USG) has a requirement for construction services set forth under this Invitation for Bid (IFB) at Mountain Home Air Force Base (MHAFB) to upgrade and modernize the existing distribution switching station (Bldg 1406) to current industry standards and performances by constructing a new building (Bldg 1017) to serve as a switchgear enclosure on the southwest side of Liberator Street. Additionally, the construction services shall transition loads from the existing distribution switching station to the new distribution switching station. Lastly, the existing distribution switching station will be demolished. (See Figure 1 through Figure 14 for reference and clarification)

1.2 The construction services shall provide (a) administrative services such as management oversight, developing proposals and detailed project schedule, invoicing, finalizing as-builts drawings, etc.; (b) identifying all materials, required tools and subsequent procurement; (c) electricians/linemen that are duly qualified and certified for the installation of medium-voltage cables and equipment; and (d) all ancillary services associated with medium-voltage replacement per industry standards and guidance.

2.0 BACKGROUND INFORMATION

2.1 Mountain Home Air Force Base switching station was constructed in 1947 and is composed of two adjacent electrical system facilities separated by a chain link fence acting as a demarcation between the: (a) distribution substation owned and operated by Idaho Power Company (IPC); and (b) distribution switching station owned and operated by MHAFB. The adjoining IPC substation steps down the high voltage from transmission overhead lines to a distribution voltage level that can be distributed from the switching station to various locations within MHAFB. The switching station performs this distribution by means of eight (8) reclosers, which were replaced in both 1975 and 2007. The eight reclosers, indiscriminately, provide electrical power to eight portions within MHAFB, referred to circuits A through H. Because the reclosers were replaced at various times, they vary in many aspects, are not interchangeable and are difficult to maintain.

2.2 There are two step-down transformers within IPC distribution substation (160-feet by 116-feet):

(a)138 kilovolt (kV) to 13.09kV Delta-Wye, 18 mega volt-amp (MVA) (33.6MVA forced-oil-air cooled transformer (FOA)) is served from the 138kV Mountain Home Tap transmission line; and (b) 69kV to 12.99kV Delta-Wye, 10MVA is served from Elmore-Mountain Home transmission line. (see Figure 2 through Figure 5 for reference) The 138kV transmission line is the primary source of power and the 69kV transmission line is the secondary source of power, both of which tie into a main common bus.

The common bus feeds three sets of vacuum-circuit breakers with isolation and bypass switches: (a) #1343 breaker feeding MHAB-011 feeder; (b) #1306 breaker feeding MHAB-012 feeder; and (c) #1344 breaker feeding MHAB-013 feeders. The three medium-voltage feeders (MHAB-011, -012, and -013) are routed from the IPC distribution substation to the switching substation (owned and operated by MHAFB) by two sets of overhead lines (-011 and -012) and one buried line (-013).

3.0 PROJECT INFORMATION

3.1 The main scope for this project is to replace the existing MHAFB switching substation (Bldg 1406) with a new switching station (Bldg 1017) southwest of the current substation site across Liberator Street. The existing MHAFB distribution switching substation (Bldg 1406) on the north side of Liberator Street will be demolished as part of this project. The proposed project site for the new distribution switching station (Bldg 1017) is located in the southwest corner of the intersection of Liberator Street and 7th Avenue at MHAFB in southwest Idaho. (See figures at end of this SOW for reference)

3.2 The new switching station (Bldg 1017) will be a stand-alone single-story building constructed with reinforced concrete masonry unit (CMU) blocks with a CMU veneer. The exterior of the building will be characterized by textured, integrally colored CMU veneer to complement the existing adjacent buildings as per MHAFB installation facility standards. The exterior metal doors, frames, and metal components will be finished in a beige color as per MHAFB Installation Facility Standards.

3.3 Existing underground utilities are present and active at the new location for the distribution switching station, including electrical, communications, water, and sanitary sewer. The new distribution substation building (Bldg 1017) will be located to avoid conflicts with existing utilities, which are primarily located within utility corridors along 7th Avenue and Liberator Street. New underground electrical utilities will be added, connecting the IPC substation to the new switchgear building. These electrical utilities will cross Liberator Street and 7th Avenue and will require repaving small segments of the roadway for installation and removal of the old utilities. In addition, the existing electrical infrastructure to be abandoned and removed during the demolition of the existing switching substation (Bldg 1406). New electrical service is the only utility required at the new switching station (Bldg 1017). The existing water infrastructure is sufficient for fire protection needs.

3.4 A security fence is required for the site with minimum barrier rating of M40/K8. The anti-ram barrier must be on the latest DoD Anti-Ram Vehicle Barriers list to meet the current ASTM F2656-07 (Standard Test Method for Vehicle Crash Testing of Perimeter Barriers). This fence should be very similar to the appearance of the adjacent Security Forces fence that this project will tie into. In addition, to secure the site’s parking lot from vehicles and the site from pedestrian traffic, a sliding or swing gate will be needed at the parking lot entrance, along with a crash-rated drop arm gate controlled electronically from a line voltage (120V) PIN keypad with Common Access Cards (CAC) to gain access to the site.

3.5 Coordination with Idaho Power Company (IPC) will be required to extend three distribution circuits from the existing distribution circuit breakers connected to IPC’s 33.8 MVA, 138kV-13.08 kV and 10 MVA, 69kV-12.99kV (Normally Open) power transformers. Breaker 013A (1344) will initially be used as a temporary source feed to new switchgear “Main T”, pending verification of existing Circuit “C” load capabilities to also feed Main A load temporarily. Breakers 011A (1343) and 012A (1306) will be source feeds to new switchgear “Main A & Main B”. These three IPC source circuits will then be used to serve eight existing MHAFB distribution circuits (circuits “A” through “H”) with the provision to serve two fully equipped spares and four future distribution circuits protected via metal-clad switchgear located on the interior of the building. Additional electrical work will be required to provide lighting, power, and communications in the new switching station. Utility electric metering will be provided as per MHAFB standards. Additional information regarding the existing IPC and MHAFB electrical system including load flow and short-circuit analyses can be found in Design Analysis, Appendix K. Electrical equipment cut-sheets and calculations are provided in Design Analysis, Appendix L. (See References)

3.6 Routing of the new primary IPC source circuits and existing MHAFB distribution circuits will be accomplished primarily through 15 kV rated, three-phase underground cable (500 kcmil Copper) and associated deadbreak (600A) elbow terminations. Sectionalizing enclosures, “SecTER cabinets”, will be utilized along the exterior of the switchgear enclosure building to facilitate excess cable spools and tie-ins with the existing MHAFB distribution circuits (circuits “A” through “H”). Metal-clad switchgear cabinets will be arranged with a main-tie-main configuration and stacked vertically to allow for two circuit-breakers to be contained in a single cabinet. The switchgear will be rated for 1200 amps (A) and be paired with SEL-351S, SEL-751, and SEL-587Z for protective relaying, REA-101, 103, AND 105 for arc protection relaying, and SEL-735 for metering.

3.7 The new switching station (Bldg 1017) will be powered via integral, draw-out primary fuses for external outdoor transformers with secondary auto-throwover to supply 208/120V throughout the building. Station batteries will also be supplied with a minimum rating for backup service for 8-hours. The new switching station (Bldg 1017) will also support electrical equipment including light fixtures, receptacles, communication outlets, panelboards, mechanical equipment, etc. Lighting will be light emitting diode (LED) strip lights with integral emergency DC lamp sourced by switchgear battery system, pendant hung, throughout. Branch circuits will be supplied to power equipment and electrical devices within the facility. Conductors and conduit mechanical equipment will also be supplied based on the size of the equipment. All conductors will be sized to limit voltage drop to 3% for branch circuits and 2% for feeders. Minimum wire size will be #12. In the control room of the facility, new LED light fixtures with emergency DC feature will be installed and connected to new branch circuits. Communications cabling (fiber optic cable) to the facility and cabling within the facility (Cat-6) will be installed by the contractor. The data rack is designed to be in the Communications room.

3.8 New electrical primary, 15 kV, distribution cable and associated terminations connecting the existing MHAFB circuits to the new MHAFB switchgear shall be comprised of the following:

3.8.1 Primary Cable: 15 kV insulation class, 500 kcmil, National Electrical Manufacturer’s

Association (NEMA) (WC) 74, Underwriter’s Laboratories (UL) 1072, compact stranded copper conductors, 100% copper concentric neutral, MV-105 133% ethylene-propylene rubber (EPR) insulation, polyvinyl chloride (PVC) jacket.

3.8.2 Cable Terminations: Cable terminations: 600 ampere non-loadbreak, “Deadbreak”, elbows, IEEE 386, ethylene propylene diene monomer rubber outer shield, dead front type with hot-stick pulling eye, ground tab, test point, and protective caps.

3.8.3 Lightning Protection System: A lightning protection system will be installed in and on this facility as per NFPA 780 based on the importance of the equipment

3.9 A ground loop to encompass the switchgear building and associated control power transformers and SecTER cabinets will be provided as part of the Switching Station Ground. The ground loop should supplement the existing ground reference at IPC’s substation established 40-50 years prior and could be used in the event of MHAFB’s isolation from IPC and reliance on self-generation means in the future.

3.10 The ability to access the current configuration of MHAFB electrical network and its ability to control and manipulate breakers is an integral part of this project with access points at the new switching station (Bldg 1017), Civil Engineering Building (Bldg 1300), and the Electrical Shop (Bldg 1354).

3.11 The Contractor assumes a baseline level of understanding of the Risk Management Framework (RMF) and, more specifically, the Unified Facilities Criteria (UFC) for Cybersecurity of Facility-Related Control Systems (FRCS), UFC 4-010-06. This project, relative to the FRCS incorporated herein, is tailored to the requirements of the UFC and this criterion supports the RMF, which outlines the DoD’s process for securing information systems (IS) and modern-day industrial control systems (ICS) and devices. (See Design Analysis for more details)

3.12 Construction will be done in a manner to limit electrical outage durations as much as possible. See Design Analysis, Appendix K, as a key reference for transitioning from existing switching station (Bldg 1406) to new switching station (Bldg 1017). MHAFB extensive distribution network can be utilized to help mitigate individual feeder outages during cutovers from the existing MHAFB substation to the new MHAFB switchgear building. IPC Circuit Breaker 44 position is already constructed with an overhead to underground riser termination to an external sectionalizing enclosure serving Feeder C.

Utilization of this Breaker with new underground cable extension to the MHAFB switchgear building could be utilized to serve partial loads from the switchgear building. This path would be limited to

4.5 MVA, 200A.

3.13 The detailed feeder cutover plan and schedule to transfer loads from the existing substation to the new MHAFB switchgear building shall be the responsibility of the Contractor with appropriate coordination with MHAFB personnel. However, an “strawman” outline of proposed cutover sequences is provided below for reference and considerations.

3.13.1 Construct and install new MHAFB switchgear building 1017, SecTER Cabinets and MV cable while feeding existing system from existing IPC substation source.

3.13.2 Energize new switchgear with temporary service configuration from IPC 13A via Circuit C.

3.13.3 Cutover Circuit C and Circuit H from existing switching substation to 1017 breakers via distribution cross-connect switchgear SH-020.

3.13.4 Cutover Circuit D and Circuit E from existing switching substation to 1017 breakers via distribution cross-connect switchgear SD-010.

3.13.5 Cutover IPC Breaker 11A from existing switching substation to 1017 MAIN B.

3.13.6 Cutover Circuit B and Circuit F from existing switching substation to 1017 breakers via distribution cross-connect switchgear SF-020.

3.13.7 Cutover Circuit A and Circuit G from existing switching substation to 1017 breakers via distribution cross-connect switchgear SD-020 & SE-050.

3.13.8 Cutover IPC Breaker 12A from existing switching substation to 1017 MAIN A

3.14 Additional drawings illustrating this proposed cutover sequence are also provided in Design Analysis, Appendix K. New Demarcation points between Idaho Power Company (IPC) source circuits and MHAFB will be accomplished via overhead distribution double-deadend structures. An additional overhead span will then land on 2-sets of deadend overhead to underground riser structure for IPC Breakers with a Gang-Operated Air Brake (GOAB) switch for IPC Breakers 011A (1343) and 012A (1306) similar to the existing structures and configurations for IPC Breaker 013A (1344).

3.15 Demolition of the existing MHAFB substation cannot begin until new Permanent Idaho Power Company (IPC) 011A (1343) and 012A (1306) feeds are completed, and distribution line extensions as shown in the plans are completed to allow for full circuit offloads of all distribution feeders.

4.0 PERIOD OF PERFORMANCE

4.1 The period of performance for the following Statement of Work (SOW) shall be 850 calendar-days

(28-months) from the Notice to Proceed (NTP).

4.1.1 The Pre-Construction Activities shall be limited to 120 calendar days.

4.1.2 The Construction Activities shall be limited to 730 calendar days.

4.2 In the event that the Contractor foresees a delay in Project completion, the Contractor shall notify the USG Contracting Officer (KO) and USG Project Manager (PM), in writing, of the reasons for the delay prior to the completion date of the project.

4.3 Any work done without being directed to do so, in writing, by the USG will be done at the Contractor’s risk.

4.4 Any work performed beyond the original scope of work shall be accomplished only at the direction of the USG Contracting Officer (KO).

5.0 GENERAL PROVISIONS

5.1 Statement of Work (SOW), Mountain Home AFB, Repair Base Switching Station, Bldg 2406 & 1017, dated 05Jan2026. (This Document).

5.2 MHAFB Repair Base Switching Station, 100% Specifications, dated 21Oct2025.

5.3 MHAFB Repair Base Switching Station, Bldg 1406 & Power Station, Bldg 1017, 100% Design

Drawings.

5.4 The USG is required to separate this project into two (2) separate entities: (a) New Construction and

(b) Repair.

5.4.1 The design drawings (Section 5.3) have annotated every drawing as new construction, repair, or both.

5.5 MHAFB Repair Base Switching Station, 100% Design Analysis, dated 21Oct2025.

6.0 SCOPE OF EFFORT

6.1 This SOW sets forth the performance requirements for Contractor Construction Services under this

Delivery Order.

6.1.1 All work shall be in conformance with the requirements of the Contractor Contract including furnishing all materials, labor, plan, tools, equipment, transportation, supervision, management, and other services (including engineering/technical design support), items and incidentals necessary thereto.

6.1.2 The Contractor shall accomplish all planning, acquisition, labor, coordination, and project management, construction, installation, and commissioning services associated with the Specifications, Design Drawings, and SOW, in accordance to US standards and practices observing all electrical, plumbing, and building codes.

6.2 Perform all construction services to include, but not limited to the following:

6.2.1 Procurement of all equipment and materials for the new Switching Station (Bldg 1017).

6.2.2 Construction of a new 12.5 kV Switching Station.

6.2.3 Seamlessly transitioning of MHAFB distribution loads from the existing Switching Station

(Bldg 1406) to the new Switching Station (Bldg 1017).

6.2.4 Coordinate and sub-contract with Idaho Power Company (IPC) to transition aerial lines to newly installed utility poles during the transition.

6.2.5 Demolition of the existing Switching Station (Bldg 1406).

6.3 Implement this project in its entirety in accordance with the following requirements:

6.3.1 SOW, Mountain Home AFB, Repair Base Switching Station, Bldg 2406 & 1017, dated

05Jan2026. (This Document)

6.3.2 MHAFB Repair Base Switching Station, 100% Specifications, dated 21Oct2025.

6.3.3 MHAFB Repair Base Switching Station, Bldg 1406 & Power Station, Bldg 1017, 100% Design

Drawings, dated 21Oct2025.

6.3.4 Unified Facilities Criteria (UFC).

6.3.5 International Codes.

6.3.6 International Standards.

6.3.7 Manufacturer’s Installation Guide.

6.3.8 MHAFB Repair Base Switching Station, 100% Design Analysis, dated 21Oct2025.

6.4 Provide a list of key personnel to the Contracting Officer (KO) for security vetting to access MHAFB within 14-days after Notice to Proceed (NTP). All personnel staffing requiring routine access to MHAFB must submit a request for access on a 366 SFS FORM 30, to Base Contracting 14 days in advance of required access.

6.5 Provide a list of personnel that will be working on the project to the Contracting Officer (KO) for security vetting to access MHAFB within 120-days after Notice to Proceed (NTP).

6.6 Provide a “Management Summary / Summary Master Schedule (SMS)”, Level 2 Project Schedule dedicated to the “big-picture / major components” of the project.

6.6.1 Deliver within 14-days after NTP.

6.6.2 Deliver the Project Schedule using AF Form 3064 as a template to the Contracting Officer.

6.7 Provide the following project schedules in MS Projects format. Deliver PDF copy to Contracting Officer (KO) and both PDF and MPP copy to USG Project Manager (PM).

6.7.1 “Project Coordination Schedule” (PCS), L3 Schedule, within 30-days after NTP.

6.7.2 “Execution Schedule”, L4 Schedule, within 60-days after NTP.

6.7.3 “Detailed Schedule”, L5 Schedule, within 120-days after NTP.

6.7.4 Updated dynamic “Detailed Schedule”, L5 Schedule, weekly basis after Section 6.7.3 is completed.

6.8 Provide a Schedule of Values (SOV), in conjunction with the Progress Report and Invoice on a monthly basis.

6.8.1 The SOV (Earned Value) shall be integrally linked to the MS Projects dynamic “Detailed

Schedule”, L5 Project Schedule.

6.8.2 The SOV shall clearly delineate the respective line items as per Section 5.4

6.8.2.1 CLIN-01 (New Construction).

6.8.2.2 CLIN-02 (Repair).

6.8.3 Respectively, the monthly invoice shall be divided into two invoices to accurately reflect USG accountability and requirements set forth in Section 5.4:

6.8.3.1 There shall be an invoice dedicated to CLIN-01 (New Construction).

6.8.3.2 There shall be an invoice dedicated to CLIN-02 (Repair).

6.8.4 The SOV shall include the cost of the Close-Out milestone at 7.5% of total cost of CLIN-01 and 7.5% of total cost of CLIN-02.

6.9 Provide the following studies in EasyPower Modeling Software prior to procuring switchgear equipment in the new Switching Station, Bldg 1017. See Section 10.0 for additional information.

6.9.1 Power Flow

6.9.2 Short Circuit

6.9.3 Arc Flash

6.9.4 Coordination

6.9.5 Reliability

6.10 Provide initial material submittal within 120-days after NTP.

6.11 Provide complete material submittal within 180-days after NTP.

6.12 Provide submittals for the following plans within 120-days after NTP:

6.12.1 Delivery Plan

6.12.2 Traffic Plan

6.12.2.1 Road Re-Routing

6.12.2.2 Barricades

6.12.2.3 Road Closure Signage

6.12.3 QC Plan

6.12.4 Safety Plan

6.13 Provide submittals for the following plans within 150-days after NTP

6.13.1 Transitioning Plan

6.13.2 Commissioning Plan

6.13.3 SCADA / Communications Plan

6.13.3.1 Communications link from Bldg 1017 to Bldg 900.

6.13.3.2 Add SCADA package to Bldg 1300 and Bldg 1354 for operators to view electrical power breaker status, network configuration, etc.

6.14 Provide submittals (informational) for all testing/commissioning within 7-days after event.

6.15 Provide Coordination Study and Short-Circuit Study within 30-days after switchgear is identified and procured.

6.16 Provide all written reports of all calculations, study, and analysis to USG Contracting Officer (KO), USG Contracting Specialist (KS), and USG Project Manager (PM).

6.16.1 Responsible for checking calculations, drawings, details, notes, and other work products to verify the design intent, technical adequacy and scope of work have been met.

6.17 USG Contracting Officer (KO), USG Contracting Specialist (KS), and USG Project Manager (PM) reserves the right to request additional calculations to meet project scope and requirements.

6.18 Provide training to US Military personnel and US Gov’t personnel on the operation of the vacuum breakers installed inside Bldg 1017.

6.19 Perform a Contractor’s operational and verification test of all equipment to USG satisfaction

6.20 The Contractor shall furnish two (2) copies of Operation and Maintenance (O&M) manuals for all product installed in the construction.

6.20.1 The manuals shall contain complete instructions for operation, inspection, testing and maintenance of the system and shall include parts breakdown diagrams.

6.20.2 The O&M manuals shall also contain complete wiring schematics and diagrams.

6.20.3 Operation and maintenance data shall be organized into suitable sets of manageable size as indicated in the Mountain Home Base Design Standards (if applicable)

6.20.4 The Contractor shall submit to the USG Contracting Officer all paperwork that was shipped with or attached to the product or material.

6.21 All shop drawings, material samples, product data, and other work items listed on the submittal schedule shall be submitted to the USG Contracting Officer for review and approval prior to installation.

6.22 Provide “redline as-builts” or “modification drawings” to reflect the finished layout to USG Contracting Officer (KO) and USG Project Manager (PM). Format shall be as per Section 7.36.

6.23 Perform a close-out with USG Contracting Officer (KO) and USG Project Manager (PM).

6.24 Provide a Release of Reliability and 1-year Warranty Letter to USG Contracting Officer (KO) and USG

Project Manager (PM) at completion of close-out.

6.25 Provide final Invoice to USG Contracting Officer (KO) and USG Project Manager (PM).

6.26 Provide a full material and labor warranty of one (1) year for the new installation to begin upon receipt of the final project payment.

7.0 GENERAL REQUIREMENTS

Under this Delivery Order, the Contractor shall:

7.1 Perform all requirements set forth in this SOW.

7.2 The existing Switching Station (Bldg 1406) will remain operational during the entire construction period until the new Switching Station (Bldg 1017) is officially commissioned and all loads have been transferred to the new Switching Station (Bldg 1017).

7.3 Conduct services so as to cause the least possible interference with normal MHAFB operations.

7.4 The Contractor is responsible to notify the USG on urgent basis for any unforeseen conditions not previously described, especially environmentally unfriendly conditions so that Government can act upon immediately and minimize construction downtime.

7.5 Follow the most stringent requirements, standards, codes, or regulations (local, state, or federal) listed in Section 16.0 “References”. In case of conflict, the strictest code shall be applied and based on practical engineering judgment.

7.6 In the event that a conflict exists between any documents in Section 6.3, the Contractor shall notify the USG Contractor Officer (KO) and USG Project Manager (PM) for resolution.

7.7 Assign an individual to serve as a single point of contact between the Contractor and the USG for all services.

7.7.1 This POC will be the only Contractor authorized to photograph construction progress to meet Specifications 01 30 00.

7.8 The dynamic “Detailed Schedule”, L5 Project Schedule, described in Step 6.7.4 shall be:

7.8.1 Updated on a daily basis; hence, a dynamic schedule.

7.8.2 Deliverable to USG on a weekly basis.

7.9 Interruption of any utility services; e.g., roads, water, communications, or electrical must be requested in writing a minimum of 15 calendar days prior to the desired date of interruption.

7.10 Comply with current MHAFB standards and Air Force Standards as set forth by UFC 1-200-01 and UFC 1-200-02 DoD Building Codes.

7.11 Ensure that this deliver order incorporates all materials that are “Made in USA”.

7.11.1 Coordinate with USG Contracting Officer (KO) and USG Project Manager (PM) if any materials in the design cannot be found as “Made in USA”; whereby allowances will be made for substitute of equal or better quality.

7.12 All boxes and fittings, etc. for routing of Fire-Related signal / power cables shall be painted gloss red to signify fire-related.

7.12.1 Materials used to support any boxes or conduits are not required to be painted gloss red.

7.13 Provide documentation that the skilled workers are experienced in installing and testing of electrical switchgear systems of a similar complexity.

7.14 The electrician/linemen shall be licensed as a minimum journeyman and certified to work on the medium-voltage electrical power.

7.14.1 USG will require proof of journeyman licenses.

7.14.2 The electrician/lineman shall perform a dummy or practice splice and termination, in the presence of the Contracting Officer, Project Manager, and Project Inspector, before being approved as a qualified installer of medium-voltage power components/ cables.

7.15 All submittals listed in the Statement of Work and in the Schedule of Submittals shall be provided to the US Government for review and comments using the AF Form 3000. A pre-construction kick-off meeting will be held prior to the start of construction to be attended by Mountain Home AFB personnel and construction contractor. All submittals for design will be reviewed by the Government for compliance to the UFGS and the UFC. Any submittals that are reviewed and it is determined that the submittal or any individual items in that submittal do not comply with Government requirements will be marked as unacceptable and returned to the contractor for correction. All review comments made by the government to the Contractor during the construction phase shall be reviewed and incorporated into project if applicable. Contractor shall submit a separate AF Form 3000 for MHAFB Environment requirements listed for review and approval.

7.16 All materials must be submitted and approved by USG Contracting Officer with USG Project Manager’s approval prior to installation. A Submittal Log shall be kept by the Contractor Supervisor onsite and must be presentable to the USG Project Manager or USG Representative (Project Inspector) when requested. It is the USG's intent to use specified materials. The substitute must meet or exceed the specified requirements. For any materials specified by the SOW, which cannot be acquired by the contractor, a suitable alternative must be approved by the USG Contracting Officer with USG Project Manager’s approval prior to substitution. Provide its own logistics system (independent of USG resources) that is capable of procurement, shipping, transportation of personnel, storage, mobilization and maintenance of all materials and all necessary equipment.

7.17 Deliver all materials, equipment, and special equipment to MHAFB.

7.18 Unless otherwise specified or noted on drawings or in Scope of Work, all materials associated within the scope of work shall be new. All materials damaged during or after delivery, installation, and before final inspection shall be the responsibility of the Contractor and the Contractor shall replace any damaged materials or equipment at no additional cost to the USG.

7.19 Be responsible for supplying proper tools needed for this project.

7.20 Comply with current MHAFB standards, Air Force Standards, State and Federal standards, and all codes as applicable (See Section 16.0 and Section 17.0 for reference).

7.21 Contractor laydown areas for equipment and materials is provided by USG and is specified per SOW

Section 9.0.

7.22 Responsible for providing adequate sanitation facilities for their employees.

7.22.1 The Contractor is to coordinate location of these facilities prior to the Construction NTP, preferably adjacent to the Laydown Area.

7.23 The Contractor shall arrange the sanitation facility to be emptied and cleaned as needed.

7.24 Contractors are responsible for providing drinking water for their personnel.

7.25 The Contractor shall identify and obtain all required permits from MHAFB; other Federal, State, and

Local Regulatory Agencies; and approvals that will govern and affect the work described in this SOW.

7.26 The Contractor shall accomplish all planning, acquisition, labor, coordination, and project management, construction, installation, and commissioning services associated with the scope of work, in accordance to US standards and practices observing all electrical, plumbing, and building codes to replace MHAFB Switching Station, Bldg 1406 to a new MHAFB Switching Station, Bldg 1017.

7.27 Provide adequate professional supervision and quality control to ensure the accuracy, quality, timeliness, delivery, and completeness of the work during construction.

7.28 Remove all construction related debris from the site daily. There are no exceptions to this requirement.

7.28.1 All trash, debris, and refuse caused by the job shall be removed and disposed of off-base in compliance with State and Local ordinances.

7.28.2 All trash, debris, and refuse shall be deposited in an approved receptacle or container furnished by the Contractor.

7.28.3 All debris should be recycled where possible.

7.29 Repair all areas disturbed by construction operations, to include patching and final finishing.

7.30 All removed items, except those noted as being reused are to remain the property of MHAFB;

otherwise, they shall become property of the Contractor and shall be removed from the job site.

7.30.1 MHAFB reserves the right to keep any removed items even though not noted on the

Drawings.

7.31 The Contractor shall exercise due care to protect existing installations and monuments from damage.

7.31.1 During performance of the work, the Contractor shall maintain clean project area(s) daily at his/her expense and at the end of each work day and upon completion of the job.

7.31.2 Any damage to equipment during the project is the responsibility of the Contractor to repair to original condition. This is to include travel paths to the project site.

7.32 All damaged items are to be replaced in kind unless prior approval is obtained from the CO

7.33 Coordinate with the USG Representative (Project Inspector) or USG Project Manager for inspection.

7.34 USG Representative (Project Inspector) or USG Project Manager must approve contractor's work prior to acceptance.

7.35 Ensure that all equipment testing, training sessions, and equipment manuals required for this project comply with the requirements of this SOW Section 6.18.

7.36 Final As- Built drawings shall be submitted using the latest version of AutoDesk of AutoCAD 2020, in dwg format, conforming to applicable provisions of the Tri-Services CADD/GIS Technology Center’s Architectural, Engineering and Construction (A/E/C) CADD Standards

8.0 REQUIREMENTS – POWER STUDY

8.1 The Contractor shall provide the following studies to USG KO and USGPM that is “tailored” to the equipment procured for the new Switching Station, Bldg 1017.

8.1.1 Power Flow

8.1.2 Short Circuit

8.1.3 Arc Flash

8.1.4 Coordination

8.1.5 Reliability

8.2 The format of the above studies shall be in latest version of EasyPower modeling software.

8.2.1 The USG will provide the Contractor the current model of MHAFB Electrical Power grid in

EasyPower.

8.3 The studies shall be formally submitted as an “Informational Submittal” and shall be reviewed / approved by USG prior to the Contractor procuring the equipment.

9.0 REQUIREMENTS – COORDINATION WITH IDAHO POWER COMPANY

9.1 Contractor shall coordinate and sub-contract Idaho Power Company (IPC) to transition aerial lines from IPC Substation to new utility poles installed for the new MHAFB Switching Station (Bldg 1017).

9.2 Contractor shall coordinate all onsite activities with appointed USG Contracting Officer (KO) and USG Project Manager (PM) with at least 7 calendar days’ notice.

9.2.1 The Contractor shall provide personnel identification of those personnel needing MHAFB access to USG Contracting Specialist (KS) and/or USG Contracting Officer (KO).

9.3 Any required inspections, tests, and reports made by the Contractor, Sub-Contractors, specifically trained technicians, equipment manufacturers, and others as required shall be coordinated through USG Contracting Officer (KO) and USG Project Manager (PM).

10.0 REQUIREMENTS - ENVIRONMENTAL

10.1 The Contractor shall adhere to PCB sampling plans (References 16.2.1 and 16.2.2) to include the 40

CFR requirements (EPA provided the Sampling porous surfaces SOP) per USC §761.61. This analysis shall be performed at the existing Switching Station, Bldg 1406 on concrete, asphalt, and soils, regardless of removal, as if PCB contamination is discovered above the regulatory level the soils, it shall be disposed of at an appropriate offsite disposal facility as determined by sample analysis results.

10.2 The Contractor is responsible for all soil disposal within the construction area as per the Air Force and DOD policy, no exceptions, and it is not ERA eligible. (i.e., the Contractor is responsible for sampling and disposal). Anything outside the construction area would be considered for 10 USC 2703 (Environmental Restoration Account – ERA) eligibility if it meets those requirements.

10.3 The Contractor shall excavate as necessary as per Design Drawings to:

10.3.1 Install new conduits under roadway to new Switching Station.

10.3.2 No existing active utilities shall be disturbed.

10.3.2.1 Power

10.3.2.2 Communications (Fiber and POTS)

10.3.2.3 Water

10.3.2.4 Stormwater

10.3.2.5 Sewer

10.3.2.6 Gas

10.4 For soils to be reused on-base, they must meet EPA Industrial RSL standards and Idaho DEQ approval for reuse. Any materials that are non-hazardous but exceed soil reuse levels will have to be disposed of at a subtitle D landfill.

10.5 The Contractor shall strictly adhere to the following soil testing requirements:

Existing Switching Station, Bldg 1406

10.5.1 Any excess soil or base-coarse shall be analyzed for on-base reuse as fill.

10.5.2 One ten-point composite sample shall be taken per 100 cubic yards of material and tested for TOTAL RCRA 8 Metals. If the TOTAL RCRA 8 Metals analysis contains a total constituent result greater than 20 times the RCRA regulatory limit, mandatory TCLP analysis for that sample shall be conducted (for a hazardous waste determination). A modification to the contract will be required for TCLP analysis.

10.5.3 Test results shall be submitted to the CO for evaluation.

10.5.4 Once approved, the excess material shall be transported to Red Fir Avenue, outside the

Munitions Storage Area. The UGS Project Manager (PM) will identify the exact location.

10.5.5 The material will only require dumping; no grading or compaction is required.

10.5.6 If the material is unsuitable for reuse as fill, a modification to the contract will be required.

10.5.7 Provided a PCB sample and analysis plan based on the attached PCB sampling document for review and approval. Sample and test according to the approved PCB plan. No soil, concrete or asphalt shall be disturbed until testing has been submitted and approved.

New Switching Station, Bldg 1017

10.5.8 The location of the new switching station is suspected to contain chlordane, a hazardous pesticide. Any excess soil or base course shall be analyzed to determine disposal and/or re-use on MHAFB.

10.5.9 One ten-point composite sample shall be taken for every 100 cubic yards of material and tested for TCLP RCRA Metals and TCLP for Chlorinated Pesticides (for a hazardous waste determination).

10.5.10 One ten-point composite sample shall also be taken for every 100 cubic yards of material and analyzed for TOTAL RCRA Metals and TOTAL for Chlorinated Pesticides (for a reuse determination).

10.5.11 Test results shall be submitted to the CO for evaluation.

10.5.12 If the material is tested after excavation and stockpiling, the soil shall be placed on an impermeable membrane, covered, and labeled as hazardous waste pending analysis.

10.5.13 The soil shall be tested and disposed of within 90 days of excavation.

10.5.14 The soil is expected to be considered non-hazardous, requiring disposal at the subtitle D landfill. If testing indicates the soil is suitable for reuse on-base (approval is required), please coordinate with the project PM for the exact location. If testing indicates the material is considered hazardous waste, the soil shall be disposed of at a subtitle C landfill.

In either case, a modification to the contract will be required.

Liberator Road / 7th Avenue

10.5.15 Any excess soil or base-coarse shall be analyzed for on-base reuse as fill.

10.5.16 One ten-point composite sample shall be taken per 100 cubic yards of material and tested for TOTAL RCRA 8 Metals, BTEXN and PAH. If the TOTAL RCRA 8 Metals analysis contains a total constituent result greater than 20 times the RCRA regulatory limit, mandatory TCLP analysis for that sample shall be conducted (for a hazardous waste determination). A modification to the contract will be required for TCLP analysis.

10.5.17 Test results shall be submitted to the CO for evaluation.

10.5.18 Once approved, the excess material shall be transported to Red Fir Avenue, outside the

Munitions Storage Area. The PM will identify the exact location.

10.5.19 The material will only require dumping; no grading or compaction is required.

10.5.20 If the material is unsuitable for reuse as fill, a modification to the contract will be required.

10.5.21

10.6 Nesting birds on the ground, in trees, buildings, or powerlines are protected under the Migratory Bird Treaty Act. The following species are known and could be affected within the construction area: (a) burrowing owls, (b) swallows, (c) ravens / crows, (d) magpies, (e) ferruginous hawk, and

(f) California gull.

10.7 A burrowing owl survey shall be completed prior to starting work between the months of April- August. A 10-day notification is required for the Natural Resource Program Manager to conduct the survey. No work shall be completed until the survey is complete and approval to commence work has been issued.

10.8 The following materials shall be recycled and/or reused at the Mountain Home AFB Recycle Center: metals (ferrous and nonferrous), cardboard, paper, plastic (#1 and #2), and stackable 4-way pallets (48”x40”). Storage containers for materials can be provided for use. Coordinate in advance with the Solid Waste Program Manager.

11.0 REQUIREMENTS – LAYDOWN YARDS

11.1 The USG shall designate two areas to be used as Laydown Yards. (See Figure 10 through Figure 14 for details)

11.1.1 Job Site Laydown Yard shall be adjacent to the location for the new Switching Station (Bldg

1017) that will be available as Contractor’s Office area and Fabrication.

11.1.1.1 There shall be chain-link fence with temporary post blocks for stanchions.

11.1.1.2 Signage placards with company name and contact information shall be securely affixed to four corners of the fencing.

11.1.1.3 Attached to the chain-link fencing, a heavy-duty anti-view mesh screen (“Privacy” or “Sniper Screen”) shall be attached.

11.1.1.3.1 The privacy screen shall obstruct view by at least 90%.

11.1.1.4 Portable toilets shall be available nearby and shall be serviced on a regular basis

11.1.1.5 Trash bins shall be available and shall be emptied on a regular basis such that no debris will be subject to runway activities at MHAFB.

11.1.1.5.1 Weight tickets of all material removed from MHAFB shall be provided to the USG on the first of each month.

11.1.1.6 USG will provide recycle trash bins for (a) carboard and (b) metals

11.1.1.6.1 Coordinate with USG Project Inspector to provide trash bins on site.

11.1.2 Material Laydown Yard shall be at the Red Fir gravel pit area that will be available for material drop-offs and storage.

11.1.2.1 Exact location to be vetted with USG Project Manager and/or USG Project

Inspector with a maximum area of 22,500 ft2 (equivalent to 150-ft x 150-ft).

11.1.2.2 There shall be chain-link fence with temporary post blocks for stanchions.

11.1.2.3 Signage placards with company name and contact information shall be securely affixed to four corners of the fencing.

11.1.2.4 Electrical power will not be available at this location.

11.1.2.5 Trash bins shall be available and shall be emptied on a regular basis such that no debris will be subject to runway activities at MHAFB.

11.1.2.5.1 Weight tickets of all material removed from MHAFB shall be provided to the USG on the first of each month.

11.1.2.6 USG will provide recycle trash bins for (a) carboard and (b) metals

11.1.2.6.1 Coordinate with USG Project Inspector to provide trash bins on site.

12.0 REQUIREMENTS – TEMPORARY CONSTRUCTION POWER REQUIREMENTS

12.1 The Contractor shall provide their own step-down transformer at the Laydown Yard adjacent to the new Switching Station (Bldg 1017), using either SecTER boxes JC-005 or JC-010. Both are rated at 600A and have spare bushing sets available at 200A for use. (See Figure 14for details)

12.2 The temporary transformer shall meet the following requirements.

12.2.1 Size transformer accordingly.

12.2.2 Transformer Specs

12.2.2.1 12,470-Volts / 7200-Volts Wye primary

12.2.2.2 120-Volts / 208 Volts Wye secondary

12.2.3 Three (3) off/on switches (one for primary side A, one for primary side B, and one for transformer secondary side.

12.2.3.1 The four-position rotary switch mechanism shall not be selected for use.

12.2.4 Feed-Through with Lighting arrestors on the B Primary side while the A side is feeding the transformer.

12.2.4.1 Recommend oil-submersed bayonet fusing, gauges, pressure relief valve, drain valve, etc.

12.2.5 Recommend Cooper or Hitachi. USG does not recommend Howard or any other reconditioned transformer.

13.0 REQUIREMENTS – SCADA COMMUNICATIONS

13.1 The Contractor shall provide as a minimum MODBUS TCP communications availability for SCADA Network connection.

13.2 Must meet requirements for Civil Engineering Control Systems DAFGM2022-32-01.

13.3 The Contractor shall coordinate with COMMS Squadron and USG Project Manager (PM) to determine the best conduit path to pull 12-strands, single-mode fiber cable to Bldg 900.

13.3.1 All switches must be compatible with MHAFB switch standards.

13.3.2 Establish SCADA controls in Bldg 1300 and Bldg 1354 of network configuration, switch positions, network status, power flow, etc. with appropriate software.

14.0 REQUIREMENTS – MASS NOTIFICATION SYSTEM

Contractor should use professional judgment and notify on-site USG Project Manager (PM) or USG Project Inspector of any deviations in accordance with Section 19.0.

14.1 The Honeywell Silent Knight Addressable FAP/MNS shall communicate with the Transceiver and report to the head-end receiving station at the Fire Station, Bldg 206.

14.2 USG will only accept a Fire Alarm system that has battery calculations / design with 20% added capacity and 24-hour test with 15-mintue operational load test based upon having a combination FAP/MNS system and the system electrical draw per NFPA.

14.3 USG will only accept the UFC and AFCEC requirements to be a combination FAP/MNS and per NFPA 72 requirements.

14.4 The MNS shall follow guidance given UFC 3-600-01 and 4-021-01.

14.4.1 In accordance with UFC 4-021-01 Sections 5-5.5, the power supply shall meet at least the minimum NFPA 72 requirements for standby power capacity. In addition, secondary (standby) power should be provided as follows: immediately upon loss of normal AC power, the standby source of power shall provide a minimum of 60 minutes of mass notification at the maximum connected load.

14.4.2 All tones that proceed each pre-recorded message shall be a different tone than that of the fire alarm system tone.

14.4.3 All recorded messages shall be in a female voice and in English.

14.4.4 All recorded messages shall override the fire alarm system.

14.4.5 The MNS shall have the following eight (8) pre-recorded messages.

14.4.5.1 Shelter in Place

14.4.5.1.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.1.2 “Attention, attention. A terrorist threat has been received. Effective immediately, implement shelter in place procedures. All personnel should remain calm and stay where you are. Shut down HVAC systems and await further instructions.”

14.4.5.1.3 Provide a 2-second pause…repeat the message.

14.4.5.2 Bomb Threat

14.4.5.2.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.2.2 “Attention, attention. A bomb threat has been issued for this building. All personnel are to evacuate immediately using the nearest exit. Further instructions will be issued outside the building by emergency response teams”.

14.4.5.2.3 Provide a 2-second pause…repeat the message.

14.4.5.3 Active Shooter

14.4.5.3.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.3.2 “Lockdown, lockdown, lockdown. Active shooter on base, active shooter on base. Lockdown, lockdown, lockdown”.

14.4.5.3.3 Provide a 2-second pause…repeat the message.

14.4.5.4 Exercise Active Shooter

14.4.5.4.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.4.2 “Exercise, exercise, exercise active shooter on base. Lockdown, lockdown, lockdown”.

14.4.5.4.3 Provide a 2-second pause…repeat the message.

14.4.5.5 Weather Warning-Lightning Within 5 Miles

14.4.5.5.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.5.2 “A weather warning has been issued for observed lightning within 5 nautical miles of the base and is valid from now until further notice”.

14.4.5.5.3 Provide a 2-second pause…repeat the message.

14.4.5.6 Fire Emergency

14.4.5.6.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.6.2 “May I have your attention please? A fire emergency has been reported in this building. Please leave the building by the nearest exit or exit stairway. Do not use elevators”.

14.4.5.6.3 Provide a 2-second pause…repeat the message.

14.4.5.7 System Test

14.4.5.7.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.7.2 “This is a system test, please take no action, this is only a test”.

14.4.5.7.3 Provide a 2-second pause…repeat the message.

14.4.5.8 All Clear

14.4.5.8.1 Three 1000 Hz tones (1-second each) are played, followed by the message.

14.4.5.8.2 “All Clear, the emergency has now ended. Please resume normal operations. Thank you for your cooperation”.

14.4.5.8.3 Provide a 2-second…