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BRUNSING ASSOCIATES, INC. <br /> 1607 Industrial Way,Belmont, CA 94002 <br /> (415)637-0170 FAX(415)637-1196 <br /> January 27, 1992 260 <br /> JAN 3 1. 1992 <br /> Mary Meays ENVIRONMEr,�'TAL kiEALTH <br /> San Joaquin County PERMIT/KR'MES <br /> Public Health Services, <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> RE: PIEZOMETER DESTRUCTION <br /> DOANE PRODUCTS COMPANY <br /> 450 E. GRANTLINE ROAD,TRACY,CALIFORNIA <br /> SITE#2441 <br /> Dear Ms. Meays: -- r <br /> Please find enclosed the permit to destroy piezomete at the Doane Products <br /> Company facility in Tracy, California. <br /> During remedial excavation to remove soil contamination on December 10, 1991, <br /> petroleum hydrocarbons were found to exist beyond the location of piezometer P-1 <br /> on the east side of the excavation. An in-field decision was made to destroy the <br /> piezometer in order to remove the soil containing petroleum hydrocarbons to meet <br /> remediation levels. The piezometer was subsequently destroyed by excavating to a <br /> depth of 12-13 feet. The entire 16 feet of casing and screen were removed from the <br /> excavation. Drain rock was placed in the excavation from a depth of 13 feet up to <br /> four feet. The backfilling of the excavation was completed with Class II Aggregate <br /> Base from a depth of four feet to the surface compacted to 90 percent maximum dry <br /> density. <br /> This permit has been signed under authorization of Jim Kleinfelder of Spectrum <br /> Exploration (C-57 License # 512268) who placed the piezometer February 28, 1991 as <br /> part of the preliminary site assessment. A copy of the letter_of authorization is <br /> included with this letter. <br /> lQy�, C��� <br /> Nod-: li - Wore <br /> lebe(!,j p-z P-2 waS lakl� V <br /> I was <br /> ac Io •2L( i erv-o <br />