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M <br /> 15 October 2002 <br /> AGE-NC Project No. 98-0500 <br /> Page 2 of 2 <br /> area; 1,2-DCA concentrations as high as 470 µg/l have been detected in the deepest well <br /> established for the UST investigation (100 feet bsg). In addition, the concentrations of <br /> 1,2-DCA have increased in the samples collected from the deepest UST wells established over <br /> the past three monitoring events. <br /> • The concentrations of 1,2-DCA detected at the stoddard investigation site may be co- <br /> mingled or completely contributed by the former UST release. Additional assessment of the <br /> UST investigation, particularly the solvent 1,2-DCA in ground water, should be completed <br /> prior to any site remediation. <br /> • AGE is requesting an extension of the requested date for the CAP until 02 December 2002. <br /> In addition,AGE is requesting a site meeting prior to that date with the responsible party,the <br /> consultant for the UST investigation and a representative of the Regional Water Quality <br /> Control Board for a formal review of all pertinent geological and chemical data prior to <br /> finalization of the CAP; AGE will arrange the scheduling for the proposed meeting. <br /> If you have any questions or require further information,please contact our office at(209)467-1006. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. <br /> W <br /> William Little <br /> Project Geologist <br /> cc: Ms. Kama Harrigfeld- Herum, Crabtree, et. al. <br /> Mr. Sheldon Heckman - Connell Motor Lift Truck <br /> Mr. Ervin Rifenberg - Foothill Eng. <br /> Mr. Marty Hartzell =RWQCB <br /> Mr. Mike Infurna- EHD <br />