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PUBL t, HEALTH SE g10ES ,oAQ�� <br /> ,� .0\ <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> Cq�rFpRa�P <br /> P.O. Box 2009 (1601 East Hazelton Avenue) Stockton,California 95201 <br /> (209) 468-3400 <br /> September 11, 1990 <br /> George A. Jeppsson <br /> Laura Scudders <br /> 625 City Drive - Suite 300 <br /> Orange, CA 92668 <br /> RE: LAURA SCUDDERS <br /> 100 W. vALPICO ROAD; TRACY <br /> SITE CODES: 142323 AND 14231 <br /> We have completed our review of the June 5, 1990 "Groundwater Investigation <br /> Report" prepared by Roy F. Weston and have the following comments. <br /> SITE CODE 142323 <br /> Residual contamination remains under the area of; the removed pipeline and the <br /> Tank 2 Area. The installation of a downgradient monitoring well and the <br /> subsequent sampling activities have failed to detect persistent contaminants. <br /> Therefore, we are recommending closure of the Tank 2 Area (Site Code #142323) and <br /> have requested concurrent agreement from Central Valley Regional Water Quality <br /> Control Board. <br /> Official certification will be forthcoming- uponour receipt of the CVRWQCB's <br /> opinion. <br /> SITE CODE 14231 <br /> A concern remains with respect to the lead levels associated with the Tank 1 <br /> Area. It appears that the soluble portion of the leachate sample extraction <br /> performed by Roy F. Weston on January 29, 1990 was not analyzed using method EPA <br /> 7421 (Title 22, CCR) . <br /> This analysis must be performed and a review of the laboratory results made prior <br /> to any recommendations for closure of the Tank. I Area. " Therefore, we would <br /> suggest that resampling of the Tank 1 Area proced. <br /> If you have any questions, contact Greg Lyon at -(209) 468--3450. <br /> Jogi Khanna, M.D. , M.P.H. <br /> Health Off' r <br /> a ie A. Cotu a, RENS, Program Manager <br /> vironmental Health Division <br /> LAC/GL:nr <br /> c: CVRWQCB <br /> c: Roy F. Weston; Attn: P. Sundberg <br /> A Division of San Joaquin County Health Care Services <br /> 1 <br />