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RECERED <br /> GROUND ZERO ANALYSIS, INC. <br /> DEL — � err►►� <br /> 1714 Main Street <br /> Escalon,California 95320 ENVIROMMENT HEALTH <br /> Telephone: (209)838-9888 PERNIMSERVICES <br /> Facsimile: (209)838-9883 <br /> December 7, 2005 <br /> Mr. Mike Infurna <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Investigation Summary Report and Request for Site Closure <br /> 26237 East Miller Avenue,Escalon,California <br /> Dear Mr. Infurna: <br /> Ground Zero Analysis, Inc. (Ground Zero) is writing on behalf of Mr. Robert Van Spronsen of <br /> Berbarian Properties, LLC (Berberian) to summarize investigation activities related to an illicit <br /> methamphetamine drug lab discharge at the subject site. The site location is presented on Figure <br /> 1. <br /> Background <br /> On June 24, 2004, Network Environmental Systems, Inc. (NES) inspected the subject property, <br /> which was known to have been affected by clandestine drug laboratory activity. The work was <br /> done in response to a letter from the San Joaquin County Environmental Health Department(EHD) <br /> dated August 17, 2004. NES collected wipe samples from various locations inside the mobile <br /> home. Soil samples were also collected from soil adjacent to the house and the irrigation well, and <br /> a water sample was collected from the septic tank serving the mobile home. Samples were <br /> analyzed for chloride,phosphorus,iodide,pH, and methamphetamine. <br /> Methamphetamine was detected in the wipe samples collected by NES. The water sample collected <br /> from the septic system also contained methamphetamine, as well as low levels of phosphorus and <br /> chloride. The soil samples collected did not contain methamphetamine but did contain elevated <br /> levels of phosphorus. The results of NES's work were reported in a Preliminary Site Assessment <br /> Report created for the owner, Mr. Robert Van Spronsen,dated July 23, 2004. <br /> G:\GROUNDZE\Berberian\sum—closure.doc <br />