Memorandum 18-072 Ramp 2 Harbor Backflow Prevention Facility

Memorandum 18-072

TO:                           Katie Koester, City Manager

FROM:                     Carey Meyer, Public Works Director/Bryan Hawkins, Harbormaster

DATE:                       June 5, 2018

SUBJECT:              Relocation of the Ramp 2 Harbor Backflow Prevention Facility Harbor Reserve Expenditure Authorization Request

The water system in the west side of the Small Boat Harbor is protected from potential contamination by backflow prevention devices at Ramp 2 and 4. In the past, these devices have been located in underground vaults at the approach to each ramp. New regulations require that these devices be located above ground. When the new restroom was constructed at Ramp 4, the device was relocated into the new restroom mechanical room. The replacement of the Ramp 2 restroom provides the opportunity to do the same thing with the backflow prevention device at Ramp 2.

The work entails extending the 6” water main into the restroom, relocating the devices from the existing underground vault into the restroom structure, and abandoning the existing vault. The water main extension would be completed by a competitively selected Contractor; relocation of the devices would be accomplished by City water distribution staff.

Attached is a cost estimate and plan for the work. The total cost of the work is estimated to be $35,911. The Harbormaster supports this work since it will bring the Small Boat Harbor backflow prevention into code compliance, reduce maintenance costs, and provide for safer operations (no more confined space entry).

Recommendation: The Council pass an ordinance amending the 2018 capital budget to authorize the expenditure of an additional $35,911 from the Harbor Reserve Fund for the relocation of the Ramp 2 Harbor backflow prevention facilities.