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F <br /> . • i <br /> Pacific Car Wash page 2 <br /> 4405 Pacific Ave, Stockton. <br /> In addition, you are required to continue to investigate the lateral and vertical extents of <br /> the groundwater plume. Additional deeper-screened monitoring wells are to be placed in <br /> areas where shallow-screened monitoring wells indicate that groundwater petroleum <br /> contaminants exceed allowable limits for being left in place untreated. Additional <br /> monitoring wells are to be installed in areas where existing peripheral area monitoring <br /> wells indicate petroleum contamination is detected. A work plan for these well <br /> installations is due at EHD within 60 days. <br /> A domestic well may be located near the site and its presence should be verified <br /> immediately. If it is present, EHD will require it to be sampled also. Please advise EHD <br /> immediately of the well's status and if you are unable to obtain the owner's approval to <br /> sample it. <br /> EHD understands that you have recently acquired the adjacent parcel of land to the <br /> north in preparation for expansion of your business. As EHD is included in parcel <br /> development/plan review on contaminated sites with the City of Stockton, it would be <br /> prudent for you to ensure that future development of your business does not interfere <br /> with, and provides for, the UST-related release remedial system operation and design. <br /> Please check with Mr. Infurna before the 'groundwork blueprints' for your expanding <br /> business are finalized. Subsurface remedial piping and conduits could be installed <br /> before your final ground finishing materials are applied. <br /> EHD thanks you for your continuing cooperation with your UST investigation. In the past <br /> EHD has allowed substantial periods of time to elapse between investigational <br /> requirements. Unfortunately the groundwater sampling data indicates that the petroleum <br /> plume is expanding and your immediate and proactive actions are now required. <br /> Please do not hesitate to contact Mr. Infurna or Mr. Henderson if you have any questions <br /> or wish to discuss the site. You may call Mr. Infuma at (209) 468-3454 or email him at <br /> minfurnaasicehd.com. Mr. Henderson can be contacted at (209) 468-3436. <br /> Donna Heran, REHS, Director <br /> EnvironmentalHealDi ' i <br /> 9� <br /> Michael J. Infurna Jr., Se for REHS Nuel C. Henderson, Jr., RG <br /> LOP / Site Mitigation Unit IV LOP/ Site Mitigation <br /> MI/ <br /> c: CVRWQCB—Jim Barton, Sacramento <br /> c: SWRCB—CUF— Mark Owens, Sacramento <br /> c: AGE—Timothy Cuellar, 837 Shaw Rd, Stockton. <br />