Memorandum
Date: November 18, 2025
To: The Honorable Eddie Crandell, Chair, Lake County Sanitation Board of Directors
From: Robin Borre, Special Districts Administrator
Subject: (Sitting as the Lake County Sanitation District Board of Directors) Approve Amendment No. 4 to the Joint Operating Agreement Southeast Geysers Effluent Pipeline Project and the Clear Lake Water Supply Agreement and authorize the Chair to sign
Executive Summary:
Lake County Special Districts (LCSD) has partnered with Geysers Power Company, L.L.C. and Northern California Power Agency (collectively the Steam Suppliers) since 1995. Together we have built major infrastructure that includes reservoirs at both the Northwest (NWWTP) and Southeast (SEWWTP) Wastewater Treatment Plants, pump stations, a lake intake structure and miles of pipelines that run from NWWTP to SEWWTP to the Middletown Wastewater Treatment Plant and up to The Geysers steamfields in Lake and Sonoma Counties. These improvements that were completed at least 25 years ago totaled over $75.5 million dollars. These were shared costs between the parties of the agreement. Capital and infrastructure improvements as well as operations and maintenance costs for this infrastructure have also been shared by the parties.
This successful partnership has proven to be very beneficial to both the County and the Steam Suppliers at The Geysers. LCSD values this partnership. All parties work collaboratively to ensure LCSD effluent is disposed of in an economical and environmentally conscious manner. The disposal of the effluent via Southeast Geysers Effluent Pipeline (SEGEP) partnership solves both LCSD regulatory requirements and aids in the production of steam for clean and renewable geothermal energy. LCSD cannot currently discharge effluent into a water way and would otherwise have to land apply all effluent at the wastewater plants. Land application is problematic due to the volumes of discharge particularly during the wet mon...
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