SOW.pdf

UNITED STATES DEPARTMENT OF AGRICULTURE

UNITED STATES NATIONAL ARBORETUM

3501 NEW YORK, AVE. N.E.

WASHINGTON, D.C. 20002

STATEMENT OF WORK AND SPECIFICATION

FOR

REPAIR OR REPLACEMENT OF EXISTING IRRIGATION

PUMPING STATION

AT THE

UNITED STATES NATIONAL ARBORETUM

WASHINGTON, D.C.

January 2014

BACKGROUND

The United States National Arboretum (USNA) located at 3501 New York Avenue, N.E., Washington, D.C. requires the repair or replacement of the entire irrigation pumping station. The USNA is open to the public and has events year round. The Arboretum’s 446 acres include, research fields, gardens and collections and activities at the Arboretum involving the contractor and employees must emphasize zero impact upon these valuable horticultural resources and events.

REQUIREMENTS

The Contractor shall perform all work in accordance with all Federal, District of Columbia, laws regulations, codes, licenses, and directives. The contractor shall provide qualified professionals to perform the required services at the Arboretum. The Contractor shall be responsible for safety of workers, Arboretum employees, visiting public and shall take proper measures to keep the public out of areas where services are being performed. The Contractor shall demonstrate caution to protect all public buildings, facilities and planted areas.

GENERAL REQUIREMENTS

1. All labor used in this contract shall be under the supervision of a qualified professional. In accordance with this contract, the contractor shall supply all labor, equipment, tools, fuel, supplies, materials, transportation and supervision required to provide specified services at the USNA. Hours of service shall be Monday – Friday between 7:00 a.m. – 4:30 p.m.

2. The contractor shall provide detailed proposals outlining services to meet or exceed the specifications in options One (1), Two (2) and Three (3). Contractors have the option to submit supplemental proposals detailing alternative recommendations which will, increase to the capability, or the longevity of the system, or provide significant cost savings. Supplemental proposals will be based on contractor’s investigations of the existing system. All proposals must contain a projected timeline from start to finish.

3. FAR clause 52.237-2 Protection of Government Buildings, Equipment, and

Vegetation (APR 1984) shall apply: "The Contractor shall use reasonable care to avoid damaging existing buildings, equipment, and vegetation on the Government installation. If the contractor's failure to use reasonable care causes damage to any of this property, the Contractor shall replace or repair the damage at no expense to the government as the Contracting Officer (CO) directs. The Contractor shall take special care not to injure trees, shrubs, roads, sidewalks, labels, signs or turf. Damage to Government property, as a result of performing this contract shall be repaired at the contractor’s expense.

4. Prior to commencing work, the contractor is required to obtain Authorization, vehicle permits, and identification badges. These can be obtained from the Engineering and Construction Office, Building 426A, BARC-East, Beltsville, Maryland. Vehicle permits and identification badges shall be returned to the Government prior to the final payment being issued.

NOTE: THE CONTRACTOR SHALL NOTIFY THE CO or COR 24 HOURS BEFORE ANY WORK IS SCHEDULED TO START. The contractor shall be required to notify the CO and/or COR in the event of any change in a scheduled work day. All contractor's work shall be monitored and inspected by USNA personnel and shall be performed in accordance with this statement of work.

SPECIFICATIONS

Option 1:

Retrofit, repair and clean existing 700 (800-1000) GPM @ 140 PSI pumping station.

1. Contractor is responsible for inspecting the entire pumping station to determine the condition and requirements to provide a fully functional and operational pumping station. The pumping station must meet or exceed the current capabilities and capacity

2. Contractor shall provide a new 5HP vertical sustain pump

3. Contractor shall provide two (2) new electronic butterfly valves (EBV) and actuator with appropriate programming built into control panel

4. Contractor will clean, service and reinstall 2 main pumps and motors

5. Contractor shall clean, service or replace flow sensor assembly

6. Contractor is responsible for connecting all motor leads, control system wiring and providing conduit as required

7. Contractor shall clean and service back flow preventers

8. Contractor shall clean, de-scale all water flow devices and pipes starting at the back flow preventers though the entire pumping station

9. Contractor to provide new all new components and wiring within the existing

Watertronics modicon programmable logic controller (PLC) based motor control enclosure. The controller shall operate 2 main pumps (and up to 3) and 1 sustain pump, on an electronic butterfly valve (EBV) or variable frequency drive (VFD) based system. Control enclosure to include all new components, including: SIGMA PLC, color touchscreen control panel, surge protection, relays, breakers and terminal blocks

10. Contractor shall provide surge and power fluctuation protection to all electrical components including pumps and controllers. Contractor shall provide specifications for all components, as regards to the acceptable range of the supply voltage

11. Contractor shall provide one (1) operation and maintenance manual

12. Contractor is responsible for start-up and testing of pump station. Testing will include load test of running irrigation system, to ensure system demands are met

13. Contractor to test and verify the existing grounding is to code

Option 2:

Replace entire pumping station equivalent or exceeding the existing 700 (800- 1000) GPM @ 140 PSI pump station starting after the back flow preventers

1. Contractor is responsible for inspecting the entire pumping station to determine the condition and requirements to provide a fully functional and operational pumping station. The pumping station must meet or exceed the current capabilities and capacity

2. Contractor shall provide surge and power fluctuation protection to all electrical components including pumps and controllers. Contractor shall provide specifications for all components, as regards to the acceptable range of the supply voltage

3. Optional - contractor will clean, service and reinstall 2 main pumps and motors

4. Contractor shall clean and service back flow preventers. Back flow system will be de-scaled and cleaned

5. Contractor shall clean, de-scale all water flow devices and pipes starting at the back flow preventers though the entire pumping station

6. Contractor to provide new all new programmable logic controller (PLC) systems of equal or better to the existing controls

7. Contractor shall properly dispose of all old equipment of USNA grounds

8. Contractor shall provide one (1) operation and maintenance manual

9. Contractor is responsible for start-up and testing of pump station. Testing will include load test of running irrigation system, to ensure system demands are met

10. Contractor to test and verify the existing grounding is to code

Option 3:

Additional equipment purchased as standby for future repairs.

Qty. 1 – Electronic Butterfly Valves and Actuators Qty. 1 – 5HP Vertical Centrifugal Pressure Maintenance Pump

Qty 1 – 30 HP horizontal centrifugal pump and high efficiency motor