Memorandum
Date: October 22, 2024
To: The Honorable Lake County Board of Supervisors
From: Robin Borre, Special Districts Administrator
Subject: (Sitting as the Lake County Sanitation District, Board of Directors) Consideration of Agreement between the County of Lake on behalf of Lake County Sanitation District (LACOSAN), and Jacobs Engineering Group Inc. for LACOSAN Full Circle Effluent Pipeline Project Update to the 2004 Preliminary Design Report for an Amount not to Exceed Three Hundred Twenty Thousand Six Hundred Eleven Dollars and No Cents ($320,611.00) and Authorize the Chair to Sign
Executive Summary: The LACOSAN Full Circle Effluent Pipeline Project, Update to the 2004 Preliminary Design Report (PDR) will update the PDR that was prepared for the full circle project in 2004. Lake County has a long history of beneficial wastewater recycling and reuse. In 1997 the first phase of a project between the Lake County Sanitation District (LACOSAN), Northern California Power Agency (NCPA), and Calpine Corporation saw the completion of a treated effluent pipeline between the Southeast Regional Wastewater Treatment Plant, the Middletown Treatment Plant and the two geothermal power producing partners operating in a known geothermal resource area referred to as the Geysers. This first phase was followed closely by a second phase of construction which gathered treated effluent from the Northwest Regional Wastewater Treatment Plant and the Clearlake Oaks County Waterworks District Treatment Plant and conveyed it to the SETP and ultimately on to the Geysers. This project known as the Basin 2000 project collected treated effluent from ten communities along the northern and eastern shores of Clear Lake and transported it to the Geysers for injection into the steam fields.
In 2004 a Preliminary Design Report was completed for a project which would provide the same collection of treated effluent from wastewater treatment plants located on the western and southern sho...
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