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J <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> PpUiN SAN JOAQUIN COUNTY <br /> �o.•_� .coG Unit Supervisors <br /> Donna K.Heran,R.E.H.S. Carl Bor man,R.E.H.S. <br /> 304 East Weber Avenue, Third Floor <br /> Director g <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • FOR�;p• Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> ERIC WEILBURG MAR 0 7 2003 <br /> FRANK L & JERRE MOORE <br /> P O BOX 8307 <br /> STOCKTON CA 95208 <br /> RE: Moore Truck Lines Stockton SITE CODE 1701 <br /> 3400 Newton Road RO: 677 <br /> Stockton, CA 95205 <br /> Pursuant to your request conveyed during our conversation on 21 February 2003 for <br /> closing the above referenced site, San Joaquin County Environmental Health Department <br /> (EHD)has reviewed the data submitted for the 1999 through 2002 quarterly groundwater <br /> monitoring events, soil and water analytical results from soil borings, boring lithologies, <br /> and the well receptor survey report prepared by Advanced GeoEnvironmental, Inc. <br /> (AGE). EHD directs AGE to continue quarterly groundwater monitoring. <br /> A site conceptual model (SCM) should be prepared for this site. This is a written <br /> description supported by maps, geological cross-sections, tables, and diagrams that <br /> provide information about the site. The SCM should include the following: <br /> 1. Local and regional plan view maps showing location of sources, extent of <br /> contamination(i.e., an interpretive drawing - not merely a plot of laboratory <br /> results), direction and rate of groundwater flow, and locations of receptors. <br /> "Receptors" include,but are not limited to, all supply wells within 2000 feet of <br /> the source area; <br /> 2. Cross-sections showing subsurface geologic features, depth of groundwater, man- <br /> made conduits, monitoring well construction, and an interpretive drawing of the <br /> vertical extent of soil contamination; <br /> 3. Plots of key chemical concentrations vs. time (e.g., plots should be shown for <br /> monitoring wells that demonstrate significant trends in contaminant <br /> concentrations); <br /> 4. Summary tables of chemical concentrations in different media; <br />