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Canepa's Car Wash Page 2 of 2 <br />'i 6230 Pacific Avenue January 22 , 2014 <br /> Stockton, California 95207-3712 <br /> Collection of groundwater samples for analysis of the same constituents listed in bullet <br /> one from the same wells listed for the background/baseline study following the last f: <br /> hydrogen peroxide injection event; <br /> Preparation and submittal to the California Regional Water Quality Control Board Central <br /> Valley Region (CRWQCBCVR) of Notice of Intent to comply with the terms of General <br /> Waste Discharge Requirements, and the Monitoring and Reporting Program No. R5- <br /> 2008-0149-0107 if required; and <br /> Preparation and submittal of the report of findings following the ISCO pilot test. <br /> The EHD approves the ISCO pilot study with the condition that you first contact the <br /> CRWQCBCVR and submit Notice of Intent to comply with the terms of General Waste <br /> Discharge Requirements, and the Monitoring and Reporting Program No, R5-2008-0149-010. <br /> Notify the EHD once the CRWQCBCVR requirements have been met. Also include analysis for <br /> methyl tertiary-butyl ether (MTBE) , tertiary-amyl methyl ether (TAME) and tertiary butyl alcohol <br /> (TBA) in the EPA Method 8260B list of compounds. <br /> As the EHD noted by letters dated 19 August 2013 and 14 October 2013, a monitoring well <br /> screened in the shallow zone is needed to monitor impacted groundwater east (down-gradient) <br /> of the source area near or beyond MW-3. By letter dated 14 October 2013, the EHD also <br /> recommended confirmation samples be collected where high benzene and ethylbenzene <br /> concentrations in shallow soil had been previously detected to check for effective shallow soil <br /> remediation . Since AGE proposes to use existing wells for the ISCO pilot study, a separate work <br /> plan will be necessary to address shallow soil contamination in the dispenser/canopy area and <br /> shallow groundwater contamination down-gradient of MW-3. Provide a work plan and timetable <br /> for addressing these issues. <br /> If you have any questions, please contact Vicki McCartney at (209) 468-9852 or by email at <br /> vmccartneyC�sicehd. com . <br /> Sincerely, <br /> >000 <br /> Victoria L. McCartney, RENS Nuel C. Henderson , Jr. , PG <br /> Senior Registered Environmental Healt pecialist Engineering Geologist <br /> c: Mr. William R. Little, PG, Advanced GeoEnviron mental, Inc. , 837 Shaw Road , Stockton , <br /> California 95215 <br /> Mr. James L. L. Barton , PG , California Regional Water Quality Control Board Central <br /> Valley Region , 11020 Sun Center Drive, Suite 200, Rancho Cordova, California 95670 <br /> Steven J . Canepa ETAL, C/O David and Darlene Canepa Trust, 1536 North Hunter Street, <br /> Stockton, California 95204 <br />