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PUBLIC FTEALTH SERVICES pQV!N <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor - Stockton, CA 95202 %FOR <br /> 209/468-3420 <br /> C(OPY <br /> ,MPIEDMONT LUMBER <br /> 395 TAYLOR BLVD STE 225 H <br /> PLEASANT HILL CA 94523 IV <br /> Re: Piedmont Lumber Site Code: 506243 <br /> 7777 W. Eleventh St. <br /> Tracy CA 94523 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) <br /> has reviewed the "File Closure Report" dated May 10, 1999 and "Addendum Letter to the <br /> File Closure Report"dated June 7, 1999 prepared by John P. Cummings & Associates <br /> (JPCA). The report contains inaccurate information. In addition the addendum does not <br /> clarify the information to adequately support its recommendation for site closure for the <br /> above referenced site. Please submit a closure report that contains all the information <br /> discussed in the Central Valley Regional Water Quality Control Board (RW"QCB) Tri- <br /> Regional Board Staff Recommendations, Appendix B (copy enclosed). <br /> When reviewing the site information PHS/EHD staff noted that diesel contamination was <br /> evidenced in the soil beneath the underground storage tank removed on July- 19, 1996. <br /> Diesel analysis on soil and groundwater samples since that time has not occurred. <br /> Groundwater samples should be collected from MW and MW-BT at a minimum and <br /> analyzed for Total Petroleum Hydrocarbon as diesel. <br /> In addition `'SMITH" reports are referenced in the "File Closure Report". Provide a copy <br /> of these reports to PHS/EHD. When referring to these reports as they pertain to <br /> conclusions about the contamination at the site please be more specific (page, date, etc.). <br /> The well survey should include all sources of information and results of inquiry to nearby <br /> industrial/manufacturing facilities to ascertain well locations. if any. Discuss any public <br /> and environmental health risks as they relate to the pumping influence of anv wells <br /> identified and the migration and potential impact of the contaminant plume as it relates to <br /> public and environmental health. <br /> Paragraph 9 5 of the Addendum states that the lateral extent of contamination was <br /> estimated from field drilling/ boring data, SMITH reports and soil results from MW3 <br /> boring work. Specify the data points (samples) to show the lateral and vertical extent of <br /> contamination. <br /> Provide accurate tables of soil and groundwater sample results that include dates. <br /> Provide the mass balance calculations for the contamination remaining in soil and water. <br /> A Division of fan Joaquin County Heaith Care Services <br />