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Mr. Nuel Henderson <br /> Page 4 of 4 <br /> Vapor Extraction System Operation <br /> The vapor extraction system is currently undergoing repair. We will conduct a period of testing as <br /> soon as the repairs have been completed. <br /> Site Conceptual Model and Meeting <br /> As requested by EHD, a Site Conceptual Model report is in preparation and will be submitted to <br /> your office in the near future. Following your review of the report we recommend that a meeting <br /> be scheduled to consider alternative approaches to future corrective action at the subject site and <br /> adjacent contamination sites. <br /> We request that EHD respond to our recommendation for reduced sampling frequency before the <br /> next scheduled sampling event (August). If you have any questions or comments regarding this <br /> report, please contact us at your earliest convenience. <br /> Respectfully, <br /> Ground Zero Analysis, Inc. <br /> it UD1wtl <br /> d <br /> Joseph L. Vasquez, �kED Ge��O <br /> Staff Geologist c <br /> kr s <br /> � GRS�AHL P. � <br /> Gregory P. Stahl, RG 5023 '�' No. 5023 <br /> CA Certified Hydrogeoiogist No. 264 <br /> AttachmentsOF CllilF� � <br /> cc: Mr. Carl Knowles <br /> Mr. Pat Riddle, Esq., Law Offices of Patrick D. Riddle <br /> Mr. James L.L.Barton, RWQCB Sacramento <br /> Mr. Mohammed Asghar <br /> Mr. Jay Johnson, Stratus Environmental <br /> Mr. Tim Cuellar, Advanced GeoEnvironrnental <br /> I <br /> G:tGROUNDZZROFKIQMRL200512gm2005.dm <br />