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GWRS Operations Update and Budget Review

This update discusses the annual review of the GWRS Operations and Maintenance budget, the production levels of the GWRS plant, issues allowing stable operational costs, and the joint efforts of OCWD and OCSD in controlling costs.

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GWRS Operations Update and Budget Review

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  1. GWRS Operations Update and Budget Review GWRS Steering Committee April 11, 2016

  2. OCWD/OCSD JOINT OPERATOINS AGREEMENT BUDGET REVIEW • The OCWD/OCSD Joint Operations agreement requires that OCWD review the GWRS Operations and Maintenance budget annually with OCSD • The General Fund budget provides funds to cover the day to day operation and maintenance of GWRS and Green Acres treatment facilities • OCWD maintains a Refurbishment and Replacement Fund (R&R) for the long term maintenance of GWRS and Green Acres assets at $5.9 million annually.

  3. PLANT PRODUCTION • With the GWRS initial expansion production is 103,000 acre feet per year • Production being maximized through OCSD’s operation of the Steve Anderson Lift Station (SALS) and the Secondary Effluent Flow Equalization • GWRS continues to operate with a high on line factor • GWRS is attempting to capture all available flows and maximize use of flow equalization during low flow periods

  4. ISSUES ALLOWING STABLE OPERATONAL COSTS • OCSD operating with NDN secondary treatment resulting in reduced fouling of MF and RO membranes when compared to CBOD mode. • Participation in Demand Response Program pays $1,000,000 • Stable chemical pricing • Focus on optimizing chemical usage • Operating RO feed at higher pH reducing acid costs • Efforts to maintain optimum chlorine residual • Using higher purity lime to help control final production water stability and reduced fouling of injection wells

  5. OCSD/OCWD JOINT EFFORTS HELP CONTROL COST • Joint Operations Committee meets monthly to discuss issues affecting OCWD and OCSD treatment processes • Both agencies have worked together to minimize impacts of each others’ operations on production to achieve a high on line factor • Both agencies efforts to optimize collection system and treatment processes to make the most and best water available for GWRS • Staff continuing to gain knowledge on how best to maximize production during daily and weekly diurnal low flow periods

  6. O&M GENERAL FUND BUDGET MAJOR COST CENTERS GWRS & GREEN ACRES * FY 16-17 budget increase due to higher production rate with expansion on line

  7. QUESTIONS

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