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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION DRAFT TIME SCHEDULE ORDER R5-2018-XXXX REQUIRING OAKWOOD LAKE WATER DISTRICT WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY TO COMPLY WITH WASTE DISCHARGE REQUIREMENTS R5-2006-0114-002 The Executive Officer of the California Regional Water Quality Control Board, Central Valley Region (Central Valley Water Board) finds that: 1. On 26 October 2006, the Central Valley Water Board adopted Waste Discharge Requirements (WDRs) Order R5-2006-0114, which prescribes requirements for the - treatment and disposal of domestic wastewater for the Oakwood Lake Wastewater Treatment Facility (WWTF) in San Joaquin County near the City of Manteca. The WWTF is located at 874 East Woodward Avenue, in Section 10, T2S, R6E and Section 11, T2S, R6E, MDB&M. 2. Order R5-2006-0114 was originally issued to both Oakwood Lake Water District (OLWD or Discharger) and Beck Properties, Inc. (Beck) because OLWD owned and operated the WWTF while Beck owned the land associated with it. The associated land has since been transferred to OLWD, which remains the sole WWTF owner and operator. OLWD owns the portion of recycled water use areas where subsurface application is used; Oakwood LT Ventures II (Lafferty), the developer of the Oakwood - Shores Subdivision, owns the portion of the Land Application Areas (LAAs) which are used for above ground spray fields. Lafferty has granted a permanent exclusive t` easement to OLWD for access to the above ground spray fields. 3. On 7 February 2014, the Central Valley Water Board adopted Order R5-2014-0023, which amended certain Discharge Specifications in WDRs Order R5-2006-0114, and authorized the Executive Officer to approve certain technical reports authorizing incremental flow rate increases up to but not in excess 136,200 gallons per day (gpd). 4. Order R5-2006-0114-001 requires OLWD to connect to a regional wastewater treatment system by 26 October 2016. Due to issues beyond the OLWD's control, the regional connection could not occur by the deadline. On 19 August 2016, the Central Valley Water Board adopted Order R5-2016-0068, which further amended Order R5- 2006-0114-001 by extending the deadline to connect to a regional treatment plant by 19 August 2026. E: WASTEWATER SYSTEM 5. The WWTF serves the Oakwood Shores Subdivision and a neighboring mobile home park. As of 31 December 2017, there were 370 occupied residences connected to the system, with an average influent flow of 77,200 gallons per day (gpd) in 2017. The current flow limit for the WWTF is 86,300 gallons per day (gpd), which was approved by the Executive Officer to OLWD in a letter dated 15 November 2016.