STATEMENT OF WORK (SOW)

RE-ACTIVATE SNAKE RIVER WATER

TRANSMISSION SYSTEM (WTS) INTAKE PUMP

STATION & PIPELINE

366th Civil Engineer Squadron (366 CES)

Mountain Home Air Force Base, Idaho

Date: 13 October 2026

CHANGE LOG

Revision Date Author Page #’s Affected

Description of Change(s)

TABLE OF CONTENTS

• 1.0 INTRODUCTION

• 2.0 TOPOGRAPHICAL INFORMATION

• 3.0 PERIOD OF PERFORMANCE (POP) & SCHEDULE

• 4.0 SCOPE OF EFFORT

• 4.1 General Requirements & Technical Qualifications

• 4.2 Pre-Activation Inspection & System Verification

• 4.3 Penstock Flushing

• 4.4 Mechanical & Fluid System Re-Commissioning

• 4.5 Coordination with Water Treatment Plant (WTP) Contractor (RSCI) & Controls Interface

• 4.6 3.5-Million-Gallon Continuous Flow Demonstration & Pumping Operations

• 4.7 Operations Flight (366 CEO) Training, Witnessing & Formal Turnover

• 5.0 REQUIREMENTS & SUBMITTALS

• 5.1 General Requirements

• 5.2 Environmental Protection & Waste Management (Section 01 57 19)

• 5.3 Safety & Health Compliance (EM 385-1-1 / OSHA)

• 6.0 GENERAL PROVISIONS

• 7.0 APPLICABLE CODES, STANDARDS & REFERENCES

• 8.0 SPECIAL CONSIDERATIONS & SITE-SPECIFIC CONSTRAINTS

• APPENDIX A – EQUIPMENT SCHEDULE & TECHNICAL REFERENCE

DATA

• APPENDIX B – DRAWINGS, AS-BUILTS & SCHEMATIC REFERENCES

1.0 INTRODUCTION

1.1 The United States Government (USG) has a requirement for specialized mechanical, civil, and industrial water systems services at Mountain Home Air Force Base (MHAFB) and associated off-base utility corridors in Elmore and Owyhee Counties, Idaho.

1.2 The contractor shall furnish all management, licensed professional personnel, specialized labor, equipment, tools, testing apparatus, materials, transportation, and incidentals necessary to inspect, re-activate, test, and demonstrate the operational readiness of the State-constructed Snake River Water Transmission System (WTS) Intake Pump Station and associated 14.5-mile raw water transmission pipeline.

1.3 System re-activation focuses strictly on the core water conveyance infrastructure to include but not limited to: the intake structure, raw water pumps, surge vessel, pneumatic charging system, primary pipeline control and relief valves, high-point air valves, and main electrical switchgear. SCADA programming and network telemetry integration between the pump station and the on-base Water Treatment Plant (WTP) will be performed separately by the WTP construction contractor (RSCI) and base personnel.

1.4 Upon completion of the required functional equipment testing, pipeline filling, and a continuous 3.5-million-gallon flow demonstration to the on-base WTP, the contractor shall formally transfer operational control of the WTS to the 366th Civil Engineer Squadron Operations Flight (366 CEO) to support ongoing commissioning and performance demonstration of the base WTP.

1.5 Government Disclaimer and Contractor Verification of Technical Data: All technical parameters, volumetric flow rates (e.g., GPM/MGD), system pressures (PSI), total dynamic heads (TDH), static heads, pipe dimensions, and topographical elevations stated in this SOW and its appendices are provided solely for general informational and reference purposes. The Government assumes no responsibility or liability for the completeness, accuracy, or operational validity of these figures.

The Contractor shall be solely responsible for drawing and specification review, site inspection, and field verification of all actual operating pressures, hydraulic gradients, elevations, pipeline lengths, and volumetric flow capacities prior commencing work.

2.0 Topographical

2.1 Topographical & Hydraulic Context:

• The C.J. Strike Intake Pump Station is located on the Snake River at normal pool elevation ~2,455 ft MSL, while the terminal receiving facilities at Mountain Home AFB sit on the Snake River Plain plateau at ~2,996 ft MSL.

• This profile creates approximately (234 to 238 PSI of static water column head).

• To overcome this static lift and dynamic line friction over 14.5 miles, the pump station discharge manifold and lower penstock operate at high pressures (approaching 280 to 300 PSI), whereas the upper plateau segments along Highway 67 transition into lower hydraulic head, utilizing 20-inch HDPE (DR 17 IPS) rated for 125 PSI.

• Construction of the raw water intake pump station, steel concrete lined penstock, surge tanks, auxiliary equipment, and 14.4-mile transmission pipeline was completed in the spring/summer of 2025 under contract to IDWR. Following initial hydrostatic and pressure testing, the system was configured to sit idle indefinitely while DAF and IDWR worked to finalize real property gift conveyance, easement bounds, and environmental operating permits.

3.0 MILESTONE CHECKLIST & SCHEDULE

3.1 Operational Milestone Execution:

• The contractor shall provide a milestone schedule to accomplish the work along with estimated time to complete each milestone.

• The contractor shall achieve full mechanical/electrical readiness, complete penstock flushing, execute pipeline filling, and conduct the continuous 3.5-million-gallon raw water flow demonstration in close coordination with the 366 CES and WTP commissioning team.

4.0 SCOPE OF EFFORT

4.1 General Requirements & Technical Qualifications

4.1.1 Technical Competency: The contractor and any proposed specialty subcontractors shall possess verifiable experience in large-scale municipal water pumping facilities, vertical turbine pumps, medium/low-voltage motor controls, and high-pressure transmission pipelines.

4.1.2 Location of Work: Work will be performed primarily at the C.J. Strike Reservoir Raw Water Intake Pump Station (located off-base near Grand View/Bruneau, ID), appurtenances along the 14.5-mile pipeline alignment along C.J.

Strike Cutoff Rd, Highway 167, Highway 67 (Airbase Road), and terminal monitoring connections at the MHAFB Water Treatment Plant (Building 2720/WTP complex).

4.2 Pre-Activation Inspection & System Verification

4.2.1 The contractor shall perform a comprehensive baseline inspection of the entire intake pump station facility, wet well, intake structure, electrical systems, and terminal vaults prior to energizing any equipment.

4.2.2 Perform manual operation of the screen cleaning system, and verify proper function.

4.2.3 Visually inspect all structural components, pipe supports, thrust blocks, and seismic bracing. Communicate identified abnormalities to the contracting officer.

4.3 Penstock Flushing

4.3.1 Preservative Chemical: Clean water and Chlorox bleach solution was introduced into the penstock for preserving the pipe’s interior materials from damage. The solution will be pumped to the WTP upon filling the pipeline. Coordination with RSCI will be required to sufficiently dilute the solution allowing RSCI to dispose/process it.

4.3.2 Prohibition on Direct Surface Discharge: Under no circumstances shall untreated preservative chemical water or water with unapproved chemical additives be discharged directly to the Snake River, C.J. Strike Reservoir, local storm drainage, or unapproved surface soils.

4.4 Mechanical & Fluid System Re-Commissioning

4.4.1 Raw Water Pumps (#1, #2, #3 - SK-0110, SK-0120, SK-0130):

• Remove motor/pump lockouts. Manually rotate shafts to verify free movement without binding, scoring, or bearing drag.

• Inspect and replace mechanical seals or pump packing as required per manufacturer specifications.

• Check and replenish lubricant in bearings, couplings, and motor housings using manufacturer-approved lithium-base grease or synthetic oil.

4.4.2 Surge Pressure Vessel & Quincy Air Compressor System (TK-0301 & TK- 0201):

• Inspect the transient surge pressure vessel (TK-0301). Verify level transmitter (LIT-0230) accuracy and calibration.

• Service the Quincy QR-25 reciprocating duplex air compressor system. Drain moisture from receiver tanks and intercoolers.

• Change compressor oil, inspect air intake filters, and check drive belt tension and pulley alignment in accordance with Quincy QR-25 manual procedures.

• Test and calibrate the Q-Control Touch master panel, verifying automatic start/stop pressure setpoints (Cut-In @ 80–135 PSI, Cut-Out @ 100–175 PSI per system specs).

• Test operation of Add Air Solenoid Valve (SV-0210) and Bleed Air Solenoid Valve (SV-0211) to ensure automated surge vessel air cushion control.

4.4.3 Pump Station High-Pressure Valves & Surge Relief (C.J. Strike):

• Pump Station Main Pressure Relief Valve (Singer Model 106/206-

RPS):

• Verify calibration of the Singer high-pressure relief pilot to relieve transient overpressures above ~300 to ~325 PSI, safely discharging surge water back into C.J. Strike Reservoir to protect the pump discharge header, check valves, and lower penstock from water hammer during emergency pump shutdowns.

4.4.4 Pipeline Appurtenances & Terminal End-of-Line Vaults (Plateau /

MHAFB):

• Cla-Val Series 33A Combination Air Release & Vacuum Breaker Valves: Inspect all high-point air valves along the 14.5-mile pipeline alignment ascending to the plateau. Clean internal float assemblies as needed, replace cover O-rings and seats as needed, and verify automatic large-orifice air venting during line filling and drip-tight sealing.

• Terminal Pressure Relief / Sustaining Valve (Singer Model 106/206-PG Vault at WTP):

• Inspect, and verify calibration of the terminal pressure relief/sustaining valve located in the vault at the entrance to the WTP.

4.5 Coordination with Water Treatment Plant (WTP) Contractor (RSCI) & Controls Interface

4.5.1 Division of Responsibilities: SCADA programming, long-distance fiber-optic communication setup, and central console integration from the WTP are explicitly excluded from this contract and will be performed by the WTP construction contractor (RSCI) and base personnel.

4.5.2 Local Controls Readiness & Interface Support: The contractor shall verify that all local pump station control panels, programmable logic controllers (PLCs), variable frequency drives (VFDs), and instrument transmitters are fully functional in Local / Manual Mode.

4.5.3 Access & Technical Coordination: The contractor shall provide physical access to the pump station control enclosures and cooperate with RSCI and base personnel during fiber-optic patch testing and telemetry signal verification.

4.5.4 Operational Communications: The contractor shall establish and maintain direct, real-time voice communications (via cellular, satellite, or two-way radio) between pump station field personnel and the WTP control room throughout all line filling, startup, and testing activities.

4.6 3.5-Million-Gallon Continuous Flow Demonstration & Pumping Operations

4.6.1 Line Filling & Pressurization Protocol:

• The contractor shall execute a highly controlled line filling procedure to charge the empty 14.5-mile pipeline from C.J. Strike Reservoir (~2455 ft MSL) up to the base plateau (~2996 ft MSL).

• Pumping rates during filling shall be restricted to low velocity (not to exceed 1.5 to 2.0 ft/sec) to allow Cla-Val 33A air release valves at high points along the canyon climb and plateau to exhaust air smoothly without air slamming or column separation.

• Gradually establish the full static head column (~ 234 PSI) at the intake manifold). Ramp pumps up to operational discharge pressure (~280 to 300 PSI) to overcome line friction, while ensuring pressures along the upper-plateau 20-inch DR 17 HDPE pipe remain safely within its operating range.

4.6.3 3.5-Million-Gallon Pumping Requirement:

• Once the pipeline is fully charged, water reaches the WTP terminal headworks, and dilution of the preservative has been sufficiently accomplished and verified by RSCI, the contractor shall operate the intake pumps to deliver a cumulative volume of at least 3.5 million gallons of raw water at the approved operational design flow rate directly into the WTP raw water receiving storage tanks. Filling the raw water tank/s shall be carefully executed in close coordination with RSCI ensuring RSCI has sufficient time for required preparations.

• Pumping shall be coordinated directly with the WTP general contractor (RSCI) and USACE Seattle District inspectors.

• The contractor shall log flow rates, header pressures, water temperature, power draw (kW/amps), and volume readings from FIT-0140 every 30 minutes during the run.

4.7 Operations Flight (366 CEO) Training, Witnessing & Formal Turnover

4.7.1 Operational Witnessing: The contractor shall provide full access to designated personnel from the 366th Civil Engineer Squadron Operations Flight (366 CEO Water and Fuels Maintenance shop) to shadow and witness all pre-start checks, pump energization, valve adjustments, local control operations, and flow testing.

4.7.2 Operational Turnover: Following successful completion of the 3.5-million-gallon flow demonstration and government acceptance of all deliverables, the contractor shall formally transfer day-to-day operational control of the facility to

366 CEO.

5.0 REQUIREMENTS & SUBMITTALS

5.1 General Requirements

5.1.1 The contractor shall perform all work in strict accordance with federal contracting provisions, Air Force Instructions (AFIs), Unified Facilities Criteria (UFC), and applicable equipment manufacturer O&M instructions.

5.1.2 The contractor shall provide all certified testing instruments, pressure gauges, flow verification devices, PPE, and technical service support required to fulfill the scope.

5.2 Environmental Protection & Waste Management (Section 01 57 19)

5.2.1 Environmental Protection Plan (EPP): The contractor shall submit a project-specific EPP to the Contracting Officer upon submission of quote. EPP shall include Hazardous Waste and Spill Prevention plans.

5.2.2 Hazardous Materials / Waste:

• Hazardous disposal manifests must be signed by 366 CES/CEIE prior to removing waste from base jurisdiction.

• All contractor-activity generated waste must be removed from the site and disposed by the contractor.

5.2.3 Spill Prevention: Secondary containment berms and spill response kits (absorbent pads, neutralizer, booms) rated for 110% of fluid volume shall be maintained at the pump station during all draining, fluid transfer, and equipment servicing operations.

5.3 Safety & Health Compliance (EM 385-1-1 / OSHA)

5.3.1 The contractor shall submit an Activity Hazard Analysis (AHA) and Site Safety and Health Plan (SSHP) covering:

• High-voltage electrical safety and Arc Flash protection (NFPA 70E).

• Confined space entry protocols for intake wet wells, deep valve vaults, and penstock manholes (29 CFR 1910.146).

• High-pressure water safety and hydraulic surge prevention.

• Lockout/Tagout (LOTO) procedures (29 CFR 1910.147).

6.0 GENERAL PROVISIONS

6.1 Occupational Safety and Health Administration (OSHA) and National Electrical Code (NEC/NFPA 70).

6.2 Access to government facilities and off-base pump station facilities shall be coordinated through the 366 CES Project Manager. Contractor personnel shall maintain valid base passes and vehicle access credentials issued by 366 SFS.

7.0 APPLICABLE CODES, STANDARDS & REFERENCES

• UFC 3-401-01: Mechanical Engineering

• UFC 3-420-01: Plumbing Systems

• UFC 3-520-01: Interior Electrical Systems

• Section 01 57 19: Temporary Environmental Controls (MHAFB Master Specification)

• Attachment 01A2: 366 CES Geographic Information System (GIS) Deliverables

• AWWA C512: Standard for Air-Release, Air/Vacuum, and Combination Air Valves for Waterworks

• NFPA 70: National Electrical Code (NEC)

• NFPA 70E: Standard for Electrical Safety in the Workplace

• USACE EM 385-1-1: Safety and Health Requirements Manual

8.0 SPECIAL CONSIDERATIONS & SITE-SPECIFIC

CONSTRAINTS

8.1 Right of Way (ROW) Encroachment Sensitivity:

• The contractor is explicitly advised that the 14.5-mile pipeline alignment along Highway 67 contains boundary-sensitive parcels where the physical pipeline converges on legal easement limits (specifically adjacent to the Laser Investment Trust, Diane K. Wells, Ronald H. Baily, and Vlad Caramidaru parcels).

• The contractor shall strictly confine all vehicles, equipment, staging, and personnel within the existing legal Right of Way and paved state highway shoulder. Under no circumstances shall contractor equipment or personnel enter upon private property without formal written temporary construction easements provided by the USG.

8.2 Coordination with Ongoing WTP Construction:

• Pumping raw water to the MHAFB WTP requires active, continuous coordination with the USACE Seattle District Resident Office and the WTP general construction contractor (RSCI). The contractor shall participate in regular synchronization teleconferences with the WTP project team leading up to the raw water flow demonstration.

APPENDIX A – EQUIPMENT SCHEDULE & TECHNICAL

REFERENCE DATA

Asset Tag Description Manufacturer Model /

Type

Key Technical Parameters (For Reference Only – Contractor to Verify)

SK-

Raw Water Pump #1

Flowserve / Peerless

Vertical Turbine

High-head municipal raw water service; designed for high-pressure discharge manifold, 460V, 3-Phase

SK-

Raw Water Pump #2

Flowserve / Peerless

Vertical Turbine

High-head municipal raw water service; designed for high-pressure discharge manifold, 460V, 3-Phase

SK-

Raw Water Pump #3

Flowserve / Peerless

Vertical Turbine

High-head municipal raw water service; designed for high-pressure discharge manifold, 460V, 3-Phase

TK-

0301 Surge Vessel Custom /

ASME

Horizontal Pressure Tank

High-pressure rated (ASME stamped), LIT- 0230 Sensor

TK-

Air Compressor Duplex

Quincy Compressor

QR-25 (Model F325/F340)

Duplex Reciprocating, Q- Control Touch, NEMA 4

SV-

0210 Add Air Valve ASCO /

Solenoid

3-Way Normally Closed

120VAC, Pilot Air to Surge Tank

SV-

Bleed Air Valve

ASCO /

Solenoid

2-Way Normally Open

120VAC, Surge Tank Vent Control

PRV-

Main PS Pressure Relief

Singer Valve Model 106-PG

/ 206-RPS

High-pressure pilot-operated surge relief;

calibrated to relieve @ back to reservoir

PRV-

Terminal Vault Relief Singer Valve Model 106-PG

/ 206-RPS

Upper plateau receiving vault at WTP; calibrated to relieve @ (protects

125 PSI DR 17 HDPE

pipe)

BFV-

01–

Isolation Valves

Av-Tek Water Mgmt

DEX® 2504

Double Eccentric

Ductile iron body, 2205 Duplex stem, 250–300

PSI CWP

CV-

01–

Pump Discharge Check

Av-Tek Water Mgmt

Series 4600

SDX

Sliding disc silent check, 20" Class 300 / 25 Bar, EPDM seat (prevents back-slam from 540 ft static column)

ARV-

01–

Air Release / Vacuum Cla-Val Series 33A

Combination 2"–4" flanged/NPT, 300 PSI rated, along 14.5-mile ascent

GEN-

Standby Generator

Caterpillar / Cummins

Diesel Engine Generator

480V, 3-phase, with automatic sub-base fuel tank

ATS-

Automatic Transfer ASCO 7000 Series 4-Pole, closed transition transfer switch

APPENDIX B – DRAWINGS, AS-BUILTS & SCHEMATIC

REFERENCES

1. State of Idaho IWRB / MHAFB WRP Contract Drawings (IFC 2024):

• Sheet G-001: General Cover Sheet & Vicinity Map

• Sheets C-101 through C-145: 14.4-Mile Raw Water Pipeline Alignment & Profile Plans

• Sheets M-201 through M-215: C.J. Strike Pump Station Mechanical Layout & Section Details

• Sheets E-401 through E-410: Electrical Single-Line Diagrams & MCC Layouts

2. Sawtooth Land Surveying / SOL Engineering Services:

• Drawing # 126161-ROS (Sheets 1–3): Mountain Home AFB Transmission Waterline Right of Way Survey

3. Manufacturer Operation & Maintenance Manuals:

• Quincy Compressor QR-25 Series Instruction Manual (Manual # 2022 2096 46)

• Av-Tek DEX® 2504 Double Eccentric Butterfly Valve IOM Manual

• Av-Tek Series 4600 SDX Sliding Disc Check Valve IOM Manual

• Singer Valve Model 106/206-PG & 106/206-RPS Operation & Maintenance Manuals

• Cla-Val Model 33A Combination Air Release & Vacuum Breaker Valve Technical Data