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Darpetro, Inc. Page 2 <br /> 749 E. Charter Way 13 March 2008 <br /> Stockton, CA <br /> • Quarterly monitoring of deep monitoring wells MW-17B and MW- 18C <br /> should continue to fully evaluate whether or not the vertical extent of <br /> impacted groundwater has been delineated ; <br /> • AEI will prepare an evaluation of potential remediation methods to address <br /> impacted groundwater and recommend the preferred approach in a report <br /> to the EHD ; and <br /> • AEI will review existing data and estimate the contaminant mass removed <br /> during the past SVE operation . <br /> Submit the SCM review/revision and associated work plan , if appropriate , to the <br /> EHD by 01 June 2008 ; include in the document the estimate of the contaminant <br /> mass dissolved in groundwater, the undissolved contaminant mass in soil , the <br /> estimated contaminant mass removed by the SVE system , and the results and <br /> recommendations from the recent SVE test. By 01 July 2008 , submit to the EHD <br /> the evaluation of potential remediation methods to address impacted <br /> groundwater and a recommendation of which method to utilize on your site. <br /> Install the previously approved MW- 15 during the second quarter of 2008 for <br /> monitoring in the third quarter; if AEI believes other wells should be installed at <br /> the same time , submit a work plan addendum with the technical justifications for <br /> the wells . <br /> Questions or comments may be directed to Nuel Henderson , Engineering <br /> Geologist, at (209) 468-3436 . <br /> Sincerely, <br /> Nuel C . Henderson , Jr. , PG Margaret Lagorio, REH <br /> Engineering Geologist Program Coordinator <br /> C : J . Barton — CVRWQCB; 11020 Sun Center Dr. #200, Rancho Cordova , CA 95670 <br /> D. Lafontaine — AEI ; 11244 Pyrites Way, Gold River, CA 95670 <br /> D . Van Allen — AEI ; 3446 N . Golden State Blvd. , Ste, C ; Turlock, CA 95382 <br /> Meeting Summary and Directive Letter 0308.doc <br />