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KLEINFELDER <br /> November 24, 1992 "'IVED <br /> File: 24-220165-D00 [E <br /> Nov 3 0 1992 <br /> Ms. Mary Meays ENVIRONMENTAL HEALTH <br /> County of San Joaquin PERMIT/SERVICES <br /> Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Subject: Request For Closure <br /> Former Mayfair Shell (Site Code 9270) <br /> 6009 North El Dorado <br /> Stockton, California 95207 <br /> Dear Ms. Meays: <br /> Based on the analytical results of samples collected from the Mayfair site, Kleinfelder is <br /> requesting closure of the former Mayfair Shell site (9270). A total of 14 samples were <br /> collected during two rounds of sampling at the site. With the exception of total lead detected <br /> in one of the samples, the results of the first round (eight samples) were generally non-detect <br /> to just above detection limits. As a representative of your Division was not on site during the <br /> sampling, a second set of six samples was collected. The second set of samples (which <br /> included a repeat of the location which reported elevated lead concentrations during the first <br /> round) also were non-detect to just above detection limits. Based on these results, Kleinfelder <br /> is requesting closure of the site such that, upon approval of the excavation and grading permit, <br /> the excavation may be backfilled. Once site closure is granted, the stockpiled soil will be <br /> transported to Forward Landfill in Stockton for disposal. <br /> Field Activities <br /> Based on the analytical results reported in Kleinfelder's March 20, 1992 report for this site and <br /> the protocol outlined in Kleinfelder's remedial work plan to San Joaquin County, <br /> approximately 100 cubic yards of soil were excavated from the site and the remaining piping <br /> was removed. After excavation of the soil, six soil samples were collected from the <br /> excavation and two samples were collected from beneath piping locations on September 9, <br /> 1992. The sample locations are shown on the attached Plate. The soil samples were collected <br /> from the backhoe bucket in 6-inch brass tubes. Each tube was sealed with Teflon sheeting and <br /> plastic caps, labeled, logged on a chain-of-custody, and stored in an iced cooler for transport <br /> to Superior Analytical Laboratories (Superior). <br /> Because a representative of San Joaquin County was not present to direct the verification <br /> sampling, a second set of verification samples was collected on October 22, 1992 (Attached <br /> Plate). The sample locations were designated by Ms. Mary Meays of the San Joaquin County <br /> Department of Public Health Services, Environmental Health Department. The samples were <br /> collected under Ms. Meays supervision using the protocol described above. The six samples <br /> were transported under chain-of-custody control to Superior. <br /> FFcRn,8--9��2¢¢-hh219 Page 1 of 3 24-220165-D00 <br /> KLEI�f OW' 1 $ I lee ec�e, ac�amento, CA 95827 (916) 366-1701 <br />