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CLEANUP AND ABATEMENT OE'R.NO. R5-2007-0725 DOLLY MADISON/LANGENDORF BAKERY 1426 S. LINCOLN ST., STOCKTON SAN JOAQUIN COUNTY FEASIBILITY STUDY 11.By 1 July 2008, submit a Feasibility Study that provides a summary of remedial alternatives evaluated to address applicable cleanup levels for the affected or threatened human health and/or waters of the State. The Feasibility Study shall propose at least two remedial technologies that have a substantial likelihood to achieve cleanup of all impacted soils and groundwater and shall.inclAude a schedule for achieving cleanup. The remedial technologies must be evaluated with respect to their ability to be implemented, cost, and effectiveness. The Feasibility Study shall include.the rationale for selecting the preferred remedial alternative. The Discharger shall attempt to clean up each waste constituent to background concentrations, or to the lowest level that is technically and economically achievable and which complies with all applicable WQOs of the Basin Plan as set forth in Finding 27. REMEDIATION 12.Within 90 days of Regional Board staff,concurrence with the proposed remedial action described in the Feasibility Study but no later than 1 November 2008, submit a Final Remedial Plan (FRP). `The FRP must include a detailed description of the remedial actions to address cleanup of the entire groundwater plume and source area soils. The FRP shall also include a schedule to implement all remedial actions. 13.Within 60 days of Regional Board staff's approval of the FRP but no later than 1 February 2009, begin implementation -of the approved remedial actions. 14.Submit for remediation system(s), monthly status reports for the first three,months of operation of any new systems. At a minimum, the monthly status reports shall.include: • site maps indicating the capture zone and waste plumes, • average extraction rates of all treatment systems, • influent and effluent concentrations of TPHg, benzene, toluene, ethylbenzene, xylenes, MtBE a-nd other fuel oxygenates, 1,2 DCA, EDB, and Organic Lead, • mass of hydrocarbons treated during the reporting period and cumulative to date, - • estimated mass of wastes remaining and predicted time frame for meeting cleanup objectives, • running and down time for the remediation system(s), • summary of consultant visits to the site, and • evaluation of the overall remediation program and recommendations to correct deficiencies or increase efficiency. ' I