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PU ZSM <br /> Working to Restore Nature <br /> I7I0 Main Street <br /> Escalon, CA 95320 <br /> Phone:(209)838-3507 <br /> FAX:(209).838-3509 n ��VI May 6, 1992 <br /> MAY 0',6 1992 <br /> Ms. Mary Meays . <br /> San Joaquin County Public Health Services ENVIRONMENTAL HEALTH . <br /> _Environmental Health Division PERMIT/SERVICES: <br /> P.O. Box 2009 t <br /> Stockton, CA 95201 - <br /> RE: Summary of Activities, January through March 1992, Site Code 1178, City of <br /> Stockton Police Facility, 22 East Market. Street, Stockton, California <br /> Dear Ms. Meays: <br /> This letter report .summarizes-activities at-the above referenced site (Figure 1) during the first <br /> quarter of 1992. <br /> On (Match1`97992 RESNA�Indusfnes, ESNA) personnel conducted groundwater <br /> monitoringlsampling from monitoring well-MW 1- and.the emergency domestic well on the <br /> subject site.(Figurel). Water samples collected from the two_wells were analyzed for benzene, <br /> toluene, ethylbenzene,. xylenes (BTEX); total petroleum.hydrocarbons as diesel (TPHD), and <br /> total oil and grease (TOG), employing EPA 8020, 8015;.and 5520 methodologies, respectively. <br /> Prior to sample collection, the site monitoring well was purged of approximately 54 gallons of <br /> water to collect a representative groundwater sample. The purged water was contained in a 55 <br /> gallon drum (DOT H), labelled, and stored-'on.site: While purging, groundwater parameters <br /> (pH,.temperature, and conductivity) were monitored and allowed.to stabilize. All water samples <br /> were collected using a disposable bailer with a bottom-emptying device. Field purge logs are <br /> included in Attachment 1. <br /> -��� .. <br /> Laboratory resultsindicatedissalved—liy`diocarbon constituents,are_not present at or above <br /> detection-limits_in-either_the,monitoring well or`the domestic well�-Arialyfical rezults-are� <br /> summarized in Table 1. .Laboratory data sheets and chain=of-:custody docu enm tation are included <br /> in Attachment 2. <br /> MR5s92JIL <br />