TO: Members of the Governing Board
FROM: Christopher Silke - District Engineer
REPORT BY: Annamaria Martinez - Assistant Engineer
SUBJECT: Approve Agreement No. 250440B (NBRID) with SUSP Engineering for Sewer Pipeline Video Services
RECOMMENDATION
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Approve and authorize Agreement No. 250440B (NBRID) with Specialized Utility Services Program dba SUSP Engineering for the video inspection of 4,000 feet of sewer pipeline. (Fiscal Impact: $8,280 Expense; Napa Berryessa Resort Improvement District; Budgeted; Discretionary)
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BACKGROUND
Napa Berryessa Resort Improvement District (NBRID) is a special district of the State of California organized in 1965 under the Resort Improvement District Law (Public Resources Code Section 13000 et seq.) for the provision of water and sewer service to Unit No 1 and 2 of the Berryessa Highlands subdivision in an unincorporated portion of the County of Napa. Provision of water and sewer services to the adjacent Oakridge Estates subdivision was established in the 1980s.
NBRID operates and maintains approximately seven (7) miles of sewer collection mains within the Berryessa Highlands and Oakridge Estates subdivisions. Most of the District's sewer collection mains are asbestos cement pipe and approximately one mile of the collection system mains were installed out of the public right of way and within private unimproved easements. At NBRID, the pipeline installed in the unimproved easements has historically shown susceptibility to I/I (inflow from stormwater runoff and infiltration from groundwater) either through separated joints between sections of pipe or through cracks in the pipeline that have occurred from root intrusion or ground shift. I/I is a concern because if left unaddressed it increases wastewater flows entering the collection system, potentially overwhelming treatment capacity and/or causing overboard discharges of wastewater to land.
Close-Circuit Television (CCTV) pipe inspection is one method of identify...
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