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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 /> c-t/Joseph L. Vasquez, ia Gf�� <br /> Staff Geologist <br /> GREGORY P. <br /> STAHL <br /> Gregory P. Stahl, RG 5023 No. 5023 <br /> CA Certified Hydrogeologist No. 264 <br /> Attachments of <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 GeoEnvironmental <br /> • <br /> G!kGROUNDZEIROEKIQM 8/2005/2 gm2005.doc <br />