Attachment 1 SOW.docx

MOJA – Replace PV Components for Kessler Water System

Mojave National Preserve

San Bernardino County, California

STATEMENT OF WORK:

Replace Photovoltaic Components and Water System Components for Kessler Springs Housing Area and Replace Solar Batteries at the Valley View Housing Area

DATED:

March 11,2020 Prepared By: Kate Blair

NATIONAL PARK SERVICE

Mojave National Preserve Statement of Work (SOW) FOR the Replacement of Kessler Water and Photovoltaic System Components And Valley View Solar Batteries

1. Background Mojave National Preserve is located in Eastern San Bernardino County 2 hours east of Barstow, CA. The work site is 25 miles east of Baker, CA and 14 miles south of I-15 on Cima Road at the Kessler Springs Housing Area. This is an off-grid site.

2. Objectives/Background:

This project will replace aging electrical components of the current stand-alone photovoltaic system that provides power to the well pump at Kessler Springs Housing Area. Components to be replaced are the 20kW propane generator, two 5500 W inverters and two associated charge/load controllers, necessary disconnects, breakers, conductors, and load centers, a 48V battery bank that supports 1350 Ah @20hr x 12. The project will also replace a 1.5HP submersible pump, pump control box , pump wire, and other appurtenances determined to need replacement, a 1000 gallon steel bladder tank and pressure switch with the same. The solar array will not be replaced. The project will involve the cleaning, disinfecting and rodent proofing of the historic building. The resulting systems should have a renewed life cycle of 15-20 more years.

This project will also replace solar batteries and connecting cables at Valley View Housing Area approximately 5 miles away from Kessler Springs.

All work will be completed to applicable code including a current state licenses.

Note: The original PV system is designed to also power a single-family residence. The residence no longer exists but the park plans on re-purposing a nearby historic structure for interpretive or administrative use and therefore will retain the size and capacity of the current system.

3. Place of Performance:

N35 17’45.34” W-115 31’ 58.06”, San Bernardino County, CA 2,442 FT elevation

Permitted Work Hours: Monday through Friday, 8:00am – 5:00pm

4. Period of Performance:

All tasks and deliverables for this contract must be completed within 60 of days after Notice to proceed. Days listed herein refer to calendar days.

5. Scope:

Kessler Srings Housing Area This project will replace aging electrical components of the photovoltaic system that provides off grid power to the water system at Kessler Springs. Components to be replaced are the 20kW water cooled propane generator with sound attenuated enclosure and solar charger, two 5500W inverters and two associated charge/load controllers, necessary disconnects, breakers, conductors, and load centers, 12 4V Surrette Rolls, 1350 Ah @20hr 4V Flooded Deep Cycle Battery, 4-KS-25P batteries or comparable battery bank that make up a similar capacity 48v PV system. The project will also replace a 4” 1.5 hp Gould submersible well pump Model M15412, 360 FT of galvanized drop pipe with stainless steel check valves, a 1000 gallon steel bladder tank and pressure switch, identified valves and appurtenances with the same. The solar array will not be replaced. The project will involve the cleaning, disinfecting and rodent proofing of the historic building.

Valley View Housing Area Replace six 4v deep cycle flooded lead acid solar batteries at Valley View Housing Area with comparable batteries and connectors.

Generator Requirements:

· Rated watts – 20 kW

· Voltage – 120/240V Single Phase

· Type – Standby Generator

· Fuel – propane (LP)

· Durable and weather-resistant – outdoor installation

· Warranty – 4 years on parts and labor

· Automatic transfer switch – UL approved and compatible

· Sound attenuated steel enclosure

· Liquid cooled with radiator

· Engine starting battery

· Generator shall be rodent proof with no greater that .25” openings.

· EPA certified for stationary Applications

· Mojave Desert AQMD Compliant Inverter Requirements:

· Inverters shall be UL1741 compliant and CEC listed at 95% efficiency

· Inverters shall be identical and have remote and local display of operating status

· Inverters shall be protected with lightening arrestors

· Minimum of 5500w

Well Pump Requirements:

· 1.5 hp

· 230v

· 10-12 gpm

· 3 wire correctly sized

· Outdoor control box

· Capacitor Start/Capacitor Run design

· Replace Pitless adapter O ring

· Current Pump Intake at 358’

· 4” Gould Model 13GS15412C or comparable that meets requirements

6. Tasks:

Under this contract, the contractor shall complete the following tasks and requirements:

· Remove existing 1 phase 20 kW 60 Hz Onan propane generator model GGDB-4961934 and recycle and replace with a comparable new unit. The existing pad and conduit, and solar charger can be reused.

· Make fuel line connections, provide for ball valve shut off, and perform leak testing according to NFPA 58 Liquified Petroleum Gas Code. Provide park with documentation.

· Clean and disinfect work area inside building. Government property will be removed prior to commencement of work.

· Rodent proof the interior side of the building and exterior door. No changes or modifications to the historical exterior are allowed.

· Demo and remove from site existing PV electrical equipment.

· Perform a performance test on existing PV array. Existing solar panel array will remain.

· Install new 11 kW minimum photovoltaic system with lightening arrestors including all switches, charge controllers, AGS unit, electrical boxes, breakers to complete the system.

· Remove and recycle 12 Rolls solar batteries Model 4 KS 25P Series 50000 and connector cables.

· Install 12 4V Rolls Solar Deep Cycle Battery bank Series 50000 Model 4 KS 25P with1350 Ah @20hr or a comparable make and model to create 48v battery bank with connections.

· Complete manufacturer’s start-up commissioning checklist and procedure and file data with manufacturer so that warranty is activated for applicable equipment.

· Completely install, program, and commission the new PV system according to manufacturer specification.

· Provide adequate system monitoring to make final adjustments to system programing for optimal performance.

· Remove and recycle well pump, wire, and control box and replace with comparable make and model.

· Measure and record static water level and recharge rate, evaluate pump intake level.

· Replace O ring in pitless adapter.

· Replace disposable filters with Harmsco reusable filter cartridges.

· Replace approximately 360 ‘ FT of galvanized drop pipe and check valves with new. Size to be determined.

· Sanitize Well.

· Perform bacteriological testing prior to putting in potable production.

· Remove from site existing 1000 gallon (approximate) and replace with comparable model. Replace pressure switch, and any other plumbing as needed. Replace any weather proofing or pipe insulation with new.

· Evaluate APCO Series 140C air valve and Singer Model 106/206-RF flow control valve for replacement.

· Valley View Housing: Remove and recycle existing six 4V Trojan Model IND20-4V flooded lead acid solar batteries and cabling.

· Valley View Housing: Install new 24V system battery bank and connector cables with comparable make model and Amp Hour capacity. Currently six 4V Trojan IND29-4V 1618 AH at 20 hrs per battery.

· Remove all construction debris, parts, trash, and other materials produced by the project.

7. Submittals:

· Provide product cut sheets and single line diagram as applicable of all new equipment to be installed for NPS review and approval.

· Provide safety plan.

· Provide for quality control plan including inspections of repair work, quality of materials, leak testing.

8. DELIVERABLES:

· Installation of new solar equipment that results in a fully functioning off grid power system for the water well at Kessler Springs.

· Installation of a new, integrated, and fully functional solar battery bank at Valley View Housing Area.

· Installation of a new well pump and controls, pressure tank, and identified appurtenances resulting in an integrated and fully automatic water pumping system.

· Train NPS personnel on normal operation of system.

· Provide all owners manuals and product information.

8. Government-Furnished Property, Material, Equipment, or Information (GFP, GFM, GFE, or GFI):

N/A

9. SAFETY:

This contractor is to follow at a minimum all OHSA rules and procedures. A required safety plan must be submitted and approved before any work is to begin. This plan shall identify any hazards related to the work and provide measures to follow to mitigate risk.

10. Security:

Work sites will be secure at the end of the day. Open pits will not be allowed overnight. The contractor will be responsible for the hazmat clean-up of any equipment fluid leaks or spills.

11. Travel:

Contractor shall be responsible for all travel related expenses for this project, including mobilization of equipment, tools, materials, manpower, lodging, meals, and per diem.

12. Special Material Requirements: N/A

13. Other Unique Requirements:

Contractors will receive Desert Tortoise training. Ground disturbance activities conducted during active tortoise season will require a monitor.

14. Quality ASSURANCE Requirement:

The contractor shall develop and maintain a quality assurance program to ensure services are performed in accordance with commonly accepted standard practices and in compliance with all applicable code. The contractor shall develop and implement procedures to identify and prevent defective workmanship. As a minimum the contractor shall develop quality control procedures addressing the critical areas identified in this statement of work. The government will periodically evaluate the contractor’s performance in accordance with the statement of work.

While performing work, the contractor shall comply with the latest applicable versions of the following:

· NFPA 101 (National Fire Protection Association's Life Safety Code)

· MUCTD Standards and Policies

· Occupational Safety and Health Administration (OSHA) requirements

· NFPA 58 Petroleum Gas Code

· NEC Code Article 690 with respect to California code

· CCR Title 16 Div 8

Additional Requirements:

· Installers shall hold current applicable California licenses.

· All affected areas must be restored to their original condition from before the work began. Any damages to government property will be fixed and repaired at no cost to the government.

· All new equipment must conform to the manufacturer’s instructions and guidelines.

15. Project Personnel:

Contracting Officer:

Jim Read NPS Mojave National Preserve Telephone: (760)252-6112 Email: jim_read@nps.gov

Park Facility Manager:

Debra Hughson - Acting NPS Mojave national Preserve 2701 Barstow Road Telephone: (760)252-6105 Email: debra_hughson@nps.gov

Project Inspector: TBD Name Park Address Telephone:

Email:

16. ATTACHMENTS:

Kessler Springs Off Grid Power System

Kessler Off Grid PV System Inverters

Kessler Springs Off Grid Battery Bank

Kessler Springs Well and Pump Control

Kessler Springs Water System Filter System

Kessler Springs Water System Pressure Tank

Valley View Battery Bank image1.wmf image2.jpeg image3.jpeg image4.jpeg image5.jpeg image6.jpeg image7.jpeg image8.jpeg image9.jpeg