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TENTATIVE TIME SCHEDULE ORDER R5-2018-xxxx 7 OAKWOOD LAKE WATER DISTRICT WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY 18. The State Water Resources Control Board Division of Drinking Water issued a letter on 16 July 2018 recommending that recycled water inadequately treated to meet Title 22 standards not be spray irrigated to recycled water use areas. Upon further discussion with Division of Drinking Water during a conference call on 13 June 2018, a consensus was reached between the Division of Drinking Water and Central Valley Water Board. The interim spray discharge of inadequately treated wastewater could only occur as disposal within dedicated area(s) that is fenced to prevent public access and that the area(s) be adequately identified with signage warning the public of partially undisinfected wastewater discharge. REGULATORY CONSIDERATIONS 19. Pursuant to Water Code section 13300, "[w]henever a regional board finds that a discharge of waste is taking place or threatening to take place that violates or will violate requirements prescribed by the regional board..., or that the waste collection, treatment, or disposal facilities ... are approaching capacity, the board may require the discharger to submit for approval..., with such modifications as it may deem necessary, a detailed time schedule of specific actions the discharger shall take in order to correct or prevent a violation of requirements." 20. Time Schedule Orders (TSOs) are appropriately issued when it appears that a discharger will not be able to comply with existing WDRs. (See Cal. Code Regs., tit. 23, § 2231, subd. (a).) 21. Based on OLWD's pattern of effluent limitation exceedances (see Finding Nos. 7-9), until OLWD either diverts all WWTF discharges to the City's municipal sewer system, or until OLWD installs a new membrane bioreactor at the WWTF (see Finding Nos. 12- 14), there is a substantial likelihood that WWTF discharges will continue to violate existing WDRs with respect to BOD, TSS, total nitrogen, TDS and total coliform. Accordingly, a TSO is appropriately issued to OLWD for WWTF discharges. 22. In accordance with California Code of Regulations, title 23, section 2231, the time schedule proposed by OLWD (and incorporated as part of this TSO) assures compliance with existing WDRs as rapidly as practicable, avoids unnecessary time lags, and requires periodic progress reports. 23. Water Code section 13267, subdivision (b)(1) provides as follows: In conducting an investigation..., the regional board may require that any person who has discharged, discharges, ... or who proposes to discharge waste within its region ... shall furnish, under penalty of perjury, technical or monitoring program reports which the regional board requires. The burden, including costs, of these reports shall bear a reasonable relationship to the need for the report and the benefits to be obtained from the reports. In requiring those reports, the regional board shall provide the person with a written explanation with regard to the need for the reports, and shall identify the evidence that supports requiring that person to provide the reports. 24. The reports required under this TSO, pursuant to Water Code section 13267, are necessary to ensure OLWD's most rapid compliance with this TSO and existing