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Environmental <br /> Resources <br /> Management <br /> 1777 Botelho Drive <br /> Suite 260 <br /> 1 u 4 Walnut Creek,CA 94596 <br /> (925)946-0455 <br /> (925)946-9968(Fax) <br /> 27 September 1999 <br /> Mr Harlin Knoll <br /> Registered Environmental Health Specialist <br /> San Joaquin County Public Health Services <br /> Environmental Health Division ERM® <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Ground Water Monitoring Results <br /> 1325 and 1515 West Weber Avenue <br /> Stockton, California <br /> Dear Mr Knoll <br /> On behalf of Catellus Development Corporation (Catellus), ERM submits <br /> this letter summarizing the results of the recent ground water monitoring <br /> conducted at Catellus' properties at 1325 and 1515 West Weber Avenue <br /> in Stockton, California As discussed below, the results of this <br /> monitoring indicate that the potential impacts on ground water quality <br /> are limited, and that the site closure process may proceed <br /> Scope and Purpose of Momtonng Event <br /> As we discussed in our 30 June 1999 meeting, a monitoring event was <br /> conducted during July 1999 to support closure of the West Weber <br /> properties Specifically, the purpose of this monitoring was to determine <br /> whether current ground water conditions are comparable to those <br /> observed during previous sampling events, which indicated that impacts <br /> to ground water quality are limited If significant changes in the quality <br /> of ground water were not observed during this most recent sampling, the <br /> County indicated that they would require no further remedial activity at <br /> the property and would proceed with site closure <br /> As discussed at the 30 June 1999 meeting, during the July 1999 sampling <br /> event, ground water samples were collected from wells MW-1 through - <br /> 5 (Site #1) and MW-1A through -5A (Site #2) The samples were then <br /> analyzed for the following <br />