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Environmental <br />' Resources <br /> Management <br /> 1777 Botelho Drive <br /> Suite 260 <br /> Walnut Creek,CA 94596 <br /> (510)946-0455 <br /> 27 April 1998 (510)946-9968(Fax) <br /> F <br /> Mr Harlan Knoll <br /> Registered Environmental Health Specialist <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> ERM <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, CA 95202 <br /> Subject Fourth Quarter Ground Water Monitoring <br /> Results 1325 and 1515 West Weber Avenue <br /> Stockton, California <br /> Dear Mr Knoll <br /> On behalf of Catellus Development Corporation (Catellus), ERM is <br /> pleased to submit this letter summarizing the results of the 4th Quarter <br /> 1997 Ground Water Monitoring Event recently conducted at Catellus' <br /> L, properties at 1325 and 1515 West Weber Avenue in Stockton, California <br /> i <br /> Field activities were conducted on December 1 and December 2, 1997, <br /> and included measuring water levels in each of the ten on-site wells and <br /> collecting ground water samples from six wells III locations are <br /> presented in Figure 1 The following monitoring schedule for the on-site <br />_-� wells was agreed upon during a 7 September 1995 meeting with San <br /> Joaquin County Public Health Services, Catellus Development <br /> Corporation and ERM <br /> t <br /> Well ID Sampling Frequency Last Sampled <br /> MW-1 Quarterly September 19, 1997 <br /> MW-2 Annually September 19, 1997 <br /> MW-3 Annually September 19, 1997 <br /> MW-4 Quarterly September 18, 1997 <br /> r <br /> I <br />