A04_SOW_Lift Stations PMIS 309196 Cyclic Maint Final 14May2020.docx

Statement of Work DEVA Sewage Lift Stations Preventive Maintenance

PMIS #309196

Death Valley National Park May 13th, 2020

Part 1: Scope/Background/Objective

1.1 Scope of Work

Perform semi-annual and annual preventative maintenance and minor upgrades on (4) sewage lift stations in Death Valley National Park. Work performed by contract.

1.2 Background

Park staff and visitors depend on functioning sewage pumping lift stations to provide a safe working and visiting environment. There are (3) lift stations in the Cow Creek area that serve Park staff and (1) lift station at the Furnace Creek Campground that serves Park visitors. All (4) lift stations pump sewage into the Death Valley sewage collection system that terminates at the sewage treatment lagoons at Furnace Creek.

Summer daytime temperatures can reach 125° F while overnight temperatures often remain above 100° F. Sewage pumping system equipment and infrastructure are subject to accelerated degradation due to these extreme summertime temperatures. Therefore, a lift station preventative cyclic maintenance program is paramount in preventing interruption of service.

1.3 Objective

Ensure a safe working, living, and visiting environment for Park staff and Park visitors by performing annual preventive maintenance to the Death Valley sewage pumping lift stations.

Part 2: Contract Items

2.1 Equipment Summary

Cow Creek Lift Station:

a. Location: North of Cow Creek Service Rd. near Hwy 190 36° 30’ 09.27” N 116° 52’ 25.00” W

Coyote Loop Lift Station:

b. Dual pump system, one pump replaced in spring of 2018, one pump currently off line and needs to be replaced.

Electrical Service: Single-phase/240V Grinder Pump: Manufacturer: Environmental-1 Model: GP2600 Control Panel: Manufacturer: Environmental-1 Model: 250-4

c. Vault Depth: 11 feet CC50 Administrative Building Lift Station:

b. One grinder pump system w/float activation. Installed in 2003 and currently off-line and needs to be replaced.

c. Vault depth: 6 feet Furnace Creek Campground Lift Station:

2.2 Tasks & Supplies

1. Semi-annual (every 6 months) cyclic maintenance and inspections of all four lift stations;

2. Annual (every 12 months) cyclic maintenance and inspections of all four lift stations;

a. Pump motor bearing lubrication

b. Pump and clean lift station vaults of sediment and debris

3. Cow Creek lift station one-time upgrade: Install generator transfer switch and rain-tight (3) phase (4) wire receptacle.

4. Coyote Loop lift station one-time upgrade: Install new second pump and test controls and alarms.

5. CC50 Administrative Building Lift Station one-time upgrade: Replace grinder pump and float system with new. Test controls and alarms.

6. Furnace Creek Campground Lift Station one-time upgrade: Install (6) circuit generator transfer switch and rain-tight single phase (3) wire receptacle.

2.3 Contract Period

Contract is for one year of lift station cyclic maintenance which will include (2) semi-annual maintenance visits, one annual maintenance visit, and one-time upgrades as identified above in section 2.2. Period of performance is from June 1st, 2020 to May 31st, 2021.

Part 3: Additional Information

1. The lift stations included in this contract are located in the Furnace Creek and Cow Creek areas.

2. Death Valley will provide Park staff as a point of contact (POC) and as an escort while performing work in the Park

3. Contractor to provide replacement parts and material submittals to the assigned Park Contracting Officers Representative (COR) for Park approval.

4. All contractor communication concerning the contract will be through the assigned Park COR.

5. Upon completion of each lift station cyclic maintenance visit, the contractor will furnish the National Park Service with a report of what work was done on each lift station and what repairs are necessary, if any. Any additional parts and labor required to complete necessary identified repairs will be an additional charge to the National Park Service.