B08_-_Atch_1_-_SOW_-_Final_(6_15_26).pdf

SCOPE OF WORK

Project Title: Death Valley National Park Well, Conduit and Liftstation

Rehabilitation

Location: Stovepipe Wells Production Well Coyote Loop Lift Station Furnace Creek

Campground Lift Station Death Valley National Park, California

PART 1- GENERAL

ITEM 1- DESCRIPTION OF WORK

1.1 Background

Death Valley National Park operates critical potable water production and wastewater conveyance infrastructure that supports visitor services, employee housing, campgrounds, maintenance operations, and public facilities throughout the Furnace Creek and Stovepipe

Wells developed areas.

The Stovepipe Wells potable water production system consists of a groundwater production well, submersible pumping equipment, motor controls, electrical distribution equipment, well power conductors, and a variable frequency drive control system used to maintain potable water production and system pressure. Existing equipment has experienced age-related deterioration, electrical degradation, and operational reliability concerns requiring replacement and modernization.

The Stovepipe Wells potable water system also includes existing ½-inch Schedule 80 PVC conduit runs that provide pathways for electrical power, control wiring, and instrumentation cabling between the well vault and the electrical control panel. Flood events and elevated groundwater conditions have resulted in water intrusion through conduit penetrations, creating risk to electrical systems and operational reliability. This project will replace existing conduit runs in-kind and provide watertight sealing of all conduit penetrations to prevent future water intrusion while maintaining continuous operation of the potable water system.

The park also operates wastewater lift stations that are essential to wastewater collection and conveyance. Existing lift station equipment at the Coyote Loop Lift Station and Furnace Creek Campground Lift Station has experienced mechanical and electrical failures affecting system reliability, redundancy, and maintainability.

This project shall provide replacement, rehabilitation, startup, testing, and commissioning of potable water production equipment, conduit infrastructure, wastewater pumping infrastructure, and associated controls to restore reliable operation, improve electrical safety, reduce maintenance requirements, and extend the service life of critical utility assets.

1.2 Work Covered by the Contract Documents

The Contractor shall furnish all labor, supervision, materials, transportation, tools, equipment, permits, testing services, startup services, commissioning services, and incidentals necessary to complete the work described herein.

Electrical acceptance testing shall be performed in accordance with ANSI/NETA ATS latest edition. Testing shall include insulation resistance testing, continuity testing, grounding verification, torque verification, voltage verification, phase rotation testing, and operational testing.

Potable Water Well Rehabilitation

Prior to equipment procurement, the Contractor shall verify existing well dimensions, pump setting depth, static water level, pumping water level, discharge head conditions, existing motor horsepower requirements, and electrical characteristics. Any discrepancies affecting equipment selection shall be reported to the COR prior to ordering equipment.

• Remove and dispose of the existing well pump assembly.

• Remove and dispose of the existing motor assembly.

• Remove existing well power conductors and associated wiring.

• Remove obsolete control equipment and associated electrical components.

• Furnish and install a new submersible well pump assembly sized to meet existing hydraulic requirements.

• Furnish and install a new motor assembly.

• Furnish and install new Boreline flexible rising main and accessories.

• Furnish and install new well power conductors, grounding conductors, cable supports, waterproof splices, and connectors.

• Furnish and install a new 15 HP, 460-volt, three-phase Variable Frequency Drive suitable for potable water well service. Yaskawa Configured IQ shall be considered the basis of design.

• Furnish and install ancillary electrical equipment including surge protection, disconnects, transformers, terminal blocks, grounding systems, and control components.

• Reconnect and calibrate instrumentation and controls.

• Complete startup, testing, commissioning, and operator training.

Stovepipe Wells Conduit Replacement and Flood-Sealing

• Remove and dispose of existing ½-inch Schedule 80 PVC conduit runs, fittings, supports, and sealants between the well vault and the VFD/electrical control panel.

• Protect all existing conductors, instrumentation, and equipment to remain during conduit removal. Conduit shall be removed one run at a time to maintain wiring integrity.

• Install new ½-inch Schedule 80 rigid PVC conduit along existing routing, with dedicated conduit runs for:

• Pump power and control wiring

• Instrumentation and flow meter signals

• Well level transducer cabling

• Install watertight conduit penetration seals at all conduit penetrations using closed cell duct sealant (Polywater FST™ or approved equal), rated for water head pressure of not less than 22 feet.

• Maintain separation of power and instrumentation circuits in accordance with NEC requirements.

• Provide expansion fittings where required by NEC 352.44.

• Label and identify all conduit runs permanently at both ends.

• Testing, commissioning, and documentation of electrical and instrumentation systems following conduit installation.

Coyote Loop Lift Station Rehabilitation

• Remove and replace two grinder pumps matching the hydraulic, electrical, dimensional, and performance characteristics of the existing lift station equipment.

• Environmental One GP2600 shall be considered the basis of design.

• Remove and dispose of failed grinder pumps and appurtenances.

• Inspect and test existing grinder pump wiring systems.

• Troubleshoot, repair, and commission existing control panels.

• Replace relays, contactors, alarm devices, alternators, float controls, and electrical devices as required.

• Verify pump alternation, overload protection, alarm functionality, float operation, and control logic.

• Clean and disinfect wet well components prior to restoration.

• Complete startup, testing, and commissioning.

Furnace Creek Campground Lift Station Improvements

• Remove and replace one grinder pump matching existing system requirements.

• Liberty LSG 202M shall be considered the basis of design.

• Remove and replace the existing automatic transfer switch.

• Reconnect electrical feeders, grounding systems, and controls.

• Test transfer switch operation under normal and emergency conditions.

• Verify lift station performance and functionality.

• Provide the replaced Liberty LSG202M grinder pump to the COR for repair by the park outside of this procurement.

General Requirements

• Utility locating and coordination.

• Temporary bypass pumping where required.

• Confined space entry operations.

• Electrical testing.

• Mechanical testing.

• Startup and commissioning.

• Training of Government personnel.

• Site restoration.

• Closeout documentation.

The work included under this contract consists of rehabilitation and replacement of potable water production equipment, conduit infrastructure, wastewater pumping equipment, associated electrical distribution systems, motor controls, transfer switching equipment, instrumentation, and utility infrastructure. The work requires similar trades including licensed electrical contractors, pump system specialists, controls technicians, utility system installers, and commissioning personnel. For scheduling, operational coordination, testing, commissioning, and warranty administration purposes, all work shall be performed under a single contract.

ITEM 2 - EXISTING UTILITIES

Contractor shall verify the location of all utilities prior to excavation, drilling, removal, demolition, or installation activities.

Where utility conflicts are suspected, Contractor shall perform non-destructive utility exposure using vacuum excavation or equivalent methods prior to excavation activities.

Existing utilities may include:

• Potable water piping

• Groundwater well infrastructure

• Electrical feeders

• Communication wiring

• Instrumentation wiring

• Grounding systems

• Wastewater force mains

• Sewer collection piping

• Lift station controls

• Emergency power systems

• Automatic transfer switches

• PVC conduit runs and associated conductors

Contractor shall contact utility locating services and coordinate with the Contracting

Officer's Representative prior to commencing work.

Damage to utilities shall be repaired by the Contractor at no additional cost to the

Government.

Utility interruptions shall be coordinated with a minimum of 2 business days advance notice to the COR. Shutdowns shall be minimized and coordinated with park operations.

Temporary provisions shall be required if outages exceed allowable durations.

ITEM 3 - CONTRACTOR'S USE OF PREMISES

Contractor shall conduct operations to minimize impacts to visitors, park operations, utilities, emergency services, and natural resources.

All work shall comply with National Park Service regulations and the Superintendent's

Compendium.

Standard work hours are Monday-Friday, 8:00 AM-5:00 PM. Work outside these hours requires CO/COR approval.

Contractor shall maintain access to all operational facilities throughout construction.

Temporary barriers, signage, and fall protection systems shall be provided in accordance with OSHA requirements.

Staging areas shall be approved by the Contracting Officer's Representative prior to use.

Secondary containment shall be provided for chemicals.

Contractor shall maintain a clean and orderly worksite and remove waste materials daily from park property.

ITEM 4 - COMMENCEMENT, PROSECUTION, AND COMPLETION

The Contractor shall submit a detailed project schedule identifying procurement, mobilization, demolition, installation, testing, startup, commissioning, and closeout activities.

Contractor shall identify all long-lead procurement items within fourteen (14) calendar days of Notice to Proceed and provide manufacturer lead times for review by the COR.

The schedule shall identify critical path activities and be updated bi-weekly.

Michelle Harrison Highlight

Period of Performance: 180 Calendar Days

ITEM 5 -EXAMINATION OF THE SITE

Offerors are strongly encouraged to visit all project locations prior to submission of proposals. Failure to inspect site conditions shall not relieve the Contractor of responsibility for performing the work described herein. No additional compensation will be provided for conditions that could have been observed during a site visit.

ITEM 6 -ABBREVIATIONS

Applicable standards shall include but not be limited to:

• OSHA 29 CFR 1910

• OSHA 29 CFR 1926

• OSHA 29 CFR1910.146

• NFPA 70 (NEC)

• NFPA70E

• NFPA70B

• ANSI/NETA ATS

• ANSI/NECA 1

• NEMA MG-1

• UL508A

• UL651

• UL1008

• NEMA TC-2

• ASTM Standards (including ASTM D2564)

• AW WA Standards

• EPA Requirements

• NECA National Electrical Installation Standards

ITEM 7 - ACCIDENT PREVENTION

7.1General

The Contractor shall be solely responsible for the safety of personnel, Government staff, visitors, equipment, utilities, and property during execution of the work.

Due to extreme desert conditions, the Contractor shall implement a Heat Illness Prevention Program meeting California OSHA requirements, including shaded rest areas, potable drinking water, acclimatization procedures, work/rest cycles, and emergency response procedures.

All work shall comply with:

• OSHA 29 CFR 1910

• OSHA 29 CFR 1926

• OSHA 29 CFR 1910.146 Confined Space Entry

• NFPA 70 National Electrical Code

• NFPA 70E Standard for Electrical Safety in the Workplace

• ANSI Standards

• EPA Regulations

• Applicable State of California safety requirements

7 .2 Accident Prevention Plan (APP)

The Contractor shall submit a site-specific Accident Prevention Plan not less than fifteen

(15) calendar days prior to mobilization.

The APP shall include:

• Organizational safety responsibilities

• Emergency contact information

• Site-specific Job Hazard Analyses (JHAs)

• Heat illness prevention procedures

• Electrical safety procedures

• Lockout/Tagout procedures

• Confined space entry procedures

• Atmospheric monitoring procedures

• Rescue and retrieval procedures

• Wastewater exposure controls

• Spill prevention procedures

• Hazardous material handling and spill response

• Fire prevention procedures

• Severe weather procedures

• Emergency evacuation procedures

7 .3 Electrical Safety

All electrical work shall be performed by qualified personnel.

The Contractor shall:

• Establish electrically safe work conditions.

• Perform arc flash hazard assessments.

• Utilize NFPA 70E compliant PPE.

• Verify absence of voltage before work begins.

• Implement Lockout/Tagout procedures.

• Utilize calibrated test instruments.

7.4 Confined Space Entry

Lift station rehabilitation activities shall be conducted in accordance with OSHA 29 CFR 1910.146.

The Contractor shall provide:

• Entry permits

• Atmospheric monitoring equipment

• Ventilation systems

• Retrieval tripod systems

• Rescue harnesses

• Dedicated attendants

• Emergency rescue procedures

No confined space entry shall occur without approved entry permits.

7 .5 Safety Meetings

Weekly toolbox safety meetings shall be conducted and documented throughout the project. Meeting records shall be submitted to the COR upon request.

ITEM 8 - PRECONSTRUCTION CONFERENCE

Attendance by the Contractor's Project Manager, Superintendent, Safety Officer, Electrical Supervisor, and Mechanical Supervisor shall be mandatory.

The Contractor shall present the following for review:

• Project schedule

• Schedule of values

• Accident Prevention Plan

• Quality Control Plan

• Submittal register

• Procurement schedule

• Utility outage requests

• Confined Space Entry Program

• Commissioning Plan

• Testing Procedures

• Staging Plan

• Environmental Protection Plan

No field work shall commence until the Government accepts required preconstruction submittals.

ITEM 9 - SUBMITTALS

9.1General

All submittals shall be transmitted electronically unless otherwise directed.

Contractor shall submit a Commissioning Matrix identifying each equipment component, required test, responsible party, acceptance criteria, and required documentation.

9.2 Product Data

Submit manufacturer's product data for:

• Well pump assembly

• Well motor assembly

• Boreline piping system

• Well cable assemblies

• Variable Frequency Drive

• ½-inch Schedule 80 PVC conduit and fittings

• Closed-cell duct sealant (Polywater FST™ or approved equal)

• Conduit supports and hardware

• Grinder pumps

• Automatic Transfer Switch

• Electrical equipment

• Control equipment

• Alarm systems

• Float switches

• Surge protection devices

9.3 Shop Drawings

Submit shop drawings showing:

• Equipment layouts

• Wiring diagrams

• One-line diagrams

• Control schematics

• Grounding systems

• Equipment anchorage

• Conduit routing, including routing of new PVC conduit runs and location of all penetration seals

• Lift station equipment configuration

9.4 Quality Control Submittals

Submit:

• Quality Control Plan

• Inspection forms

• Testing procedures

• Startup procedures

• Commissioning procedures

9.5 Closeout Submittals

Submit:

• As-built drawings

• Equipment warranties

• O&M manuals

• Startup reports

• Testing reports

• Commissioning reports

• Training documentation

ITEM 10 -TEMPORARY SERVICES

10.1 General

The Contractor shall provide all temporary facilities and services required to complete the work.

10.2 Temporary Utilities

Provide:

• Temporary electrical power (GFCI protected)

• Temporary lighting

• Temporary water

• Temporary communications

10.3 Temporary Sanitation

Provide portable sanitation facilities in compliance with local health regulations.

10.4 Temporary Bypass Systems

Where required, provide:

• Temporary bypass pumping systems

• Temporary wastewater conveyance systems

• Temporary potable water service systems

Temporary systems shall remain operational until permanent systems are fully commissioned.

10.5 Temporary Environmental Controls

Provide:

• Dust control

• Spill containment

• Erosion control

• Wastewater containment

• Stormwater controls

10.6 Temporary Confined Space Equipment

• Ventilation systems

• Gas monitoring systems

• Rescue equipment

• Retrieval systems

• Emergency lighting

ITEM 11- PROJECT CLOSEOUT

11.1 General

All work shall be fully completed, tested, commissioned, cleaned, and documented prior to final acceptance.

11.2 Final Testing

The Contractor shall perform and document:

• Pump performance testing

• Motor testing

• Insulation resistance testing (note: insulation resistance testing shall NOT be performed on sensitive instrumentation or VFD-connected circuits)

• Ground continuity testing

• Voltage testing

• Phase rotation testing

• ATS transfer testing

• Alarm testing

• Float switch testing

• Control sequence testing

• VFD startup testing

• Flow verification testing

• Conduit continuity testing and verification of penetration seal installation

• Verification of instrumentation signal outputs per manufacturer configuration

Following completion of startup activities, all systems shall successfully operate for a continuous 72-hour demonstration period without equipment failure, alarm fault, shutdown, or operator intervention prior to final acceptance.

Integrated Utility System Commissioning

Contractor shall perform integrated commissioning of all potable water and wastewater systems. Commissioning shall verify proper operation of pumps, motors, VFDs, transfer switches, alarms, controls, float systems, electrical protection devices, instrumentation, conduit systems, and emergency operating modes. A written commissioning report documenting all test results, deficiencies, corrective actions, and final acceptance criteria shall be submitted to the COR.

11.3 Training

Provide on-site training for Government personnel covering:

• Well operation

• VFD operation

• ATS operation

• Lift station operation

• Preventative maintenance

• Emergency procedures

11.4 Documentation

• As-built drawings

• Equipment manuals

• Startup reports

• Commissioning reports

• Test reports

• Warranty documentation

11.5 Warranty

Provide a minimum one-year warranty from final acceptance on all labor, installation, electrical work, controls work, conduit installation, penetration sealing, and equipment integration.

Provide manufacturer warranties for all major equipment components.

PART 2- PRODUCTS

2.1General

All products shall be new, unused, and free from defects.

Equipment shall be suitable for continuous-duty operation in a desert environment characterized by elevated temperatures, dust exposure, and intermittent utility fluctuations.

Proposed equal products shall demonstrate equivalent hydraulic performance, motor characteristics, electrical requirements, dimensional compatibility, maintenance accessibility, material durability, and operational reliability. Determination of equivalency shall be made solely by the Government.

2.2 Submersible Well Pump Assembly

Provide a complete submersible pumping system including:

• Pumpbowls

• Shafting

• Discharge head

• Check valves

• Couplings

• Cable guards

• Stainless steel hardware

Pump shall be sized to meet existing hydraulic requirements.

2.3 Well Motor

Provide:

• Three-phase motor

• Continuous-duty rating

• Premium efficiency design

• Suitable for VFD operation

• Factory tested

2.4 Boreline System

Provide:

• Flexible HOPE Boreline piping

• Stainless steel fittings

• Cable supports

• Safety rope assemblies

• Torque arrestors

• 15HP

• 460Volt

• Three-phase

• NEMA rated enclosure

• Integrated motor protection

• Fault diagnostics

• Surge protection compatibility

• HOA controls

• Local display interface

Basis of Design: Yaskawa Configured IQ. Approved Equal Accepted.

2.6 Conduit and Fittings

Provide:

• ½-inch Schedule 80 rigid PVC conduit compliant with UL 651 and NEMA TC-2

• UL-listed PVC fittings with solvent cement per ASTM D2564

• UV-resistant conduit clamps with stainless steel hardware

• Expansion fittings where required by NEC 352.44

• Permanent conduit labels at both ends of each run

2.7 Conduit Penetration Sealant

Provide:

• Closed-cell duct sealant: Polywater FST™ or approved equal

• Rated for water head pressure not less than 22 feet

• Suitable for re-entry after installation

2.8 Grinder Pumps

Provide grinder pumps compatible with existing hydraulic and electrical requirements.

Provide:

• Cast iron construction

• Hardened steel cutting assemblies

• Thermal overload protection

• Corrosion-resistant components

• Factory testing

Basis of Design: Environmental One GP2600 / Liberty LSG202M. Approved Equal Accepted.

2.9 Lift Station Controls

Provide:

• UL-listed components

• Industrial control relays

• Pump alternators

• Alarm interfaces

• Float controllers

• Surge protection

• Motor starters

2.10 Automatic Transfer Switch

• UL 1008 listed

• Service-rated

• Utility-generator transfer capability

• Mechanical interlocks

• Visual position indicators

• NEMA enclosure suitable for installation location

2.11 Electrical Materials

Provide:

• Copper conductors

• THHN/THWN insulation

• Stainless steel hardware

• PVC-coated supports where exposed

• NEMA-rated enclosures

• Grounding electrodes

• Grounding conductors

PART 3 - EXECUTION

PHASE 1- MOBILIZATION AND PREPARATION

• Verify utility locations.

• Conduct preconstruction meeting.

• Establish staging areas.

• Implement environmental protection controls.

• Submit outage requests.

• Verify equipment delivery schedules.

• Protect all existing conductors, instrumentation, and equipment to remain.

• Establish access controls and implement Lockout/Tagout procedures.

PHASE 2 - WELL SYSTEM DEMOLITION

• De-energize existing systems.

• Implement Lockout/Tagout procedures.

• Remove existing well pump assembly.

• Remove motor assembly.

• Remove well conductors.

• Remove obsolete controls.

• Dispose of removed materials off-site.

PHASE 3 - CONDUIT REPLACEMENT AND FLOOD-SEALING

• Remove existing ½-inch Schedule 80 PVC conduit runs one run at a time to protect existing conductors throughout the process.

• Dispose of removed conduit, fittings, supports, and sealants off-site per EPA regulations.

• Install new ½-inch Schedule 80 PVC conduit along existing routing in accordance with NEC requirements.

• Maintain separation of power and instrumentation circuits.

• Install conduit supports per ANSI/NECA 1.

• Provide expansion fittings where required by NEC 352.44.

• Clean and prepare all conduit penetration surfaces.

• Install closed-cell duct sealant (Polywater FST™ or approved equal) at all conduit penetrations, ensuring complete annular fill and allowing for future re-entry, per manufacturer instructions.

• Label and identify all conduit runs permanently at both ends.

• Verify wiring integrity following installation.

• Do not perform insulation resistance testing on sensitive instrumentation or VFD connected circuits.

• Confirm proper instrumentation signal outputs per manufacturer configuration.

PHASE 4 - WELL SYSTEM INSTALLATION

• Install new Boreline system.

• Install new pump assembly.

• Install new motor assembly.

• Install new conductors.

• Install grounding systems.

• Install new VFD.

• Reconnect instrumentation and controls.

• Verify mechanical alignment.

• Verify electrical terminations.

All underwater and below-grade electrical connections shall utilize waterproof submersible-rated splice kits specifically listed for groundwater well applications. Splices shall be installed in accordance with manufacturer instructions and tested prior to startup.

PHASE 5 - LIFT STATION REHABILITATION

Prior to installation of replacement equipment, wet wells shall be cleaned of accumulated grease, debris, sediment, and biological material. Removed material shall be legally disposed of off-site. High-pressure cleaning shall be performed as necessary to provide a clean inspection surface.

• Perform atmospheric monitoring.

• Implement confined space entry procedures.

• Remove failed grinder pumps.

• Inspect wet wells.

• Clean and disinfect wet well structures.

• Install replacement grinder pumps.

• Repair control systems.

• Replace failed electrical devices.

• Verify wiring integrity.

• Restore operational readiness.

PHASE6-ATSREPLACEMENT

• De-energize equipment.

• Remove existing transfer switch.

• Install new transfer switch.

• Reconnect feeders and controls.

• Perform torque verification.

• Perform manufacturer-recommended startup procedures.

PHASE 7 -TESTING AND COMMISSIONING

Perform testing in accordance with NFPA 70B, ANSI/NETA ATS, manufacturer requirements, and industry standards.

Verify:

• Pump performance

• Motor operation

• VFD programming

• Alarm functions

• ATS operation

• Grounding systems

• Control sequencing

• Float operation

• Pump alternation

• Emergency operation

• Conduit installation and penetration seal integrity

• Instrumentation signal outputs

PHASE 8 - QUALITY CONTROL INSPECTIONS

Conduct inspections at:

• Equipment delivery

• Equipment installation

• Conduit installation and penetration sealing

• Electrical completion

• Mechanical completion

• Startup

• Final commissioning

Deficiencies shall be corrected before proceeding.

PHASE 9 - FINAL RESTORATION AND CLOSEOUT

• Remove temporary facilities.

• Restore disturbed surfaces.

• Remove debris.

• Clean equipment rooms and lift stations.

• Submit final documentation.

• Conduct final walkthrough.

• Correct punch list items.

• Obtain final acceptance.

End of Scope of Work - PMIS 351259 & 349980 - Final Amended for Solicitation