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i <br /> r Former Unocal #2859 �" Page 2 <br /> 1665 Pacific Avenue March 26, 2008 <br /> Stockton, CA <br /> the site was to be evaluated and that following the assessment, the existing system would be <br /> modified or another method of remediation might be proposed. The EHD directed that the <br /> evaluation be completed and a report submitted that provided the modifications for the ozone <br /> sparge system or an alternative method of remediation by May 21, 2007. In addition, the EHD <br /> directed that a response to their July 3, 2006, letter (copy enclosed) was to be submitted by May <br /> 21, 2007. There has been no response by Chevron to either of these directives. If it cannot be <br /> demonstrated that the contaminant concentrations at-this. site will meet water quality objectives <br /> in a reasonable time (estimated to be about 10 years) then active remediation must be <br /> performed to expedite the site clean up so it will be completed within that reasonable time <br /> frame. A response to the EHD letters dated March 21, 2007 and July 3, 2006, is still required <br /> and is to be submitted by May 27, 2008. <br /> If you have any questions contact me at (209) 468-3449. <br /> ly � <br /> I` Margaret La orio, REHS <br /> Program Coordinator Unit IV <br /> Enc. <br /> c: Jim Barton, CVRWQCB <br /> David trey, SJCADA <br /> Ms. Helen McCrary, c/o Bank of Stockton, PO Box 1110, Stockton, CA, 95201 <br /> David Evans, ARCADIS, 10470 Old Placerville Rd Ste 110, Sacramento, CA, 95827 <br />