TO: Members of the Governing Board
FROM: Christopher Silke - District Engineer
REPORT BY: Annamaria Martinez - Assistant Engineer
SUBJECT: Approve Agreement No. 250439B with SUSP Engineering for Sewer Pipeline Video Services
RECOMMENDATION
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Approve and authorize Agreement No. 250439B (LBRID) with Specialized Utility Services Program dba SUSP Engineering for a maximum compensation of $21,780 for video inspection of sewer pipelines. (Fiscal Impact: $21,780 Expense; Lake Berryessa Resort Improvement District; Budgeted; Discretionary)
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BACKGROUND
Lake Berryessa Resort Improvement District (LBRID) 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. 2 of the Berryessa Estates subdivision in an unincorporated portion of the County of Napa.
LBRID operates and maintains approximately seven (7) miles of sewer collection mains within the Berryessa Estates. Most of the District's sewer collection mains are vitrified clay pipe and roughly half of all collection mains were installed out of the public right of way and within private unimproved easements. At LBRID, 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 pumping capacities and/or causing overboard discharges of wastewater to land.
Close-Circuit Television (CCTV) pipe inspection is one method of identifying sections of sewer pipeline that may be contributing to I/I. District staff has identified approximately 11,000 ft of sewer collection main located in unimprov...
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