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WASTE DISCHARGE REQUIREMEOORDER NO R5.2012-0146 GLENN SPRINGS HOLDING COMPANY, FORMER OCCIDENTAL CHEMICAL COMPANY,GROUNDWATER REMEDfATION PROJECT,LATHROP FACILITY SAN JOAQUIN COUNTY 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 reports and the benefits to be obtained from the reports. In requiring these 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." The technical reports required by this Order and the attached MRP No. R5-2012-0106 are necessary to assure compliance with these WDRs. The Discharger operates the facility that discharges the waste subject to this Order. 37. The California Department of Water Resources sets standards for the construction and destruction of groundwater wells, as described in California Well Standards Bulletin No. 74-90 (June 1991) and Water Well Standards: State of California Bulletin No. 94-81 (December 1981). These standards, and any more stringent standards implemented by the Regional Water Board or adopted by San Joaquin County pursuant to California Water Code Section 13801 apply to all monitoring, extraction and injection wells. 38. Section 3020(b)(2) of the Resource Conservation and Recovery Act (RCRA) states that prior to injection into or above an underground source of drinking water, contaminated groundwater shall be "...treated to substantially reduce hazardous constituents prior to such injection." In a letter dated 10 December 1999, the United States Environmental Protection Agency, Office of Solid Waste and Emergency Response (OSWER) states, "if extracted groundwater is amended at the surface (i.e., "treated") before reinjection, and the subsequent in-situ bioremediation achieves a substantial reduction of hazardous constituents, the remedy would satisfy Section 3020(b)(2)," Therefore, the injection of groundwater within the treatment zone at this site, with or without the treatment for VOCs, complies with Section 3020(2) (b) of RCRA. 39. The discharge is exempt from the requirements of Consolidated Regulations for Treatment, Storage, Processing, or Disposal of Solid Waste, set forth in the Title 27, California Code of Regulations (CCR), section 20005 et seq. (hereafter Title 27), which allows a conditional exemption from some or all of the provisions of Title 27. The exemption, pursuant to Title 27 CCR Section 20090(b), is based on the following.- a. The Regional Water Board is issuing Waste Discharge Requirements. b. The discharge is in compliance with the.applicable Basin Plan. C. The wastewater does not need to be managed according to Title 22CCR, Division 4.5 and Chapter 11 as a hazardous waste. Section 20090(4) allows exemption for a project to cleanup a condition of pollution that resulted from an unauthorized release of waste based on the following;