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N - <br /> PUBLIC HEALTH SERVICES <br /> j SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION ". <br /> Karen Furst, M.D ., M.P.H., Health Officer cp . <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> STEVE JERKINS MAY 0 8 , 2001 <br /> SUPERINTENDENT OF ENGINEERING <br /> CRYSTAL CREAMERY AND BUTTER COMPANY <br /> PO BOX 1313 <br /> SACRAMENTO CA 95086 <br /> RE : Crystal Creamery and Butter Company CODE : 2098 <br /> 404 W Fremont St. <br /> Stockton CA 95086 <br /> San Joaquin CountyPublic Health Services, Environmental Health Division (PHS/EHD) <br /> has received and reviewed the Report qfFim6ngs (the report) dated February 5, 2001 prepared <br /> by Wallace - Kuhl & Associates, Inc. (WKA) . The report documented the soil vapor <br /> extraction (SVE) feasibility test on February 2, 2000, air sparging (AS) feasibilitytest on <br /> March 10, 2000, and the installation of two borings (HP-1 and HP-2) and a monitoring well <br /> (MW- 8) on September 12 , 2000. <br /> PHS/EHD agrees with the statement in the report that the northeast extent of the <br /> contamination in groundwater appears to be delineated. PHS/EHD also agrees that SVE is <br /> physically feasible at the site. Submit a AS/SVE system design work plan to PHS/EHD <br /> that would include 1) additional SVE wells and/or AS wells as required based on the radius <br /> of influence and pore volume exchange calculations, 2) volume of the soil to be treated, 3) <br /> description of all instruments to be utilized in the operation of the SVE system, 4) design <br /> plan of the system and locations of all instrumentation, and 5) maximum flow rate and the <br /> type of blower to be used. Submit the work plan by June 15, 2001. <br /> In a telephone conversation on May 2, 2001, WKA stated that although the analytical results <br /> of the soil gas samples taken from the SVE wells during the SVE feasibility test and the <br /> groundwater samples taken from the AS wells during the AS pilot test were very low in <br /> volatile hydrocarbon constituents, a pump and treat groundwater extraction system is not <br /> warranted at this time since oxygenates are not a concern at this site. <br /> If you have anyquestions, please contact Jeffrey Wong at (209) 468-0335 . <br /> Donna Heran, RENS, Director <br /> Environnigntal Health Division <br /> C (i . V ✓S <br /> Jeffrey Wong, RENS Dotostrorn, RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> c: RWQCB, Central Valley Region - Warren M. Hartzell <br /> c: Wallace - Kuhl & Associates, Inc. - Mathew Taylor <br /> A Division of San Joaquin County Health Care Services <br />