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i <br /> ` John P. Cummings & Associates <br /> Environmental Consultants <br /> P O Box 2847 <br /> (5 10) 505 0722 <br /> Fax (510) 791-3308 Fremont, CA 94536-2847 <br /> File No. 0395016.00 <br /> November 21 , 1997R F <br /> Messrs. Joseph P. Eger and Paul Wnuk APR 2 1 1998 <br /> SIERRA LUMBER MANUFACTURERS ENVIRONiviENTAL HEALTH <br /> P O Box 6216 <br /> Stockton, CA 95206 PERMIT / SERVICES <br /> Re; Report 4th Quarterly Monitoring <br /> Sierra Lumber Site <br /> 375 W. Hazelton Ave. , Stockton, CA <br /> Gentlemen: <br /> John P. Cummings and Associates (JPCA) is pleased to forward to you <br /> the fourth quarter of 1997 monitoring report for well sampling on <br /> November 3 , 1997 at 375 W. Hazelton Ave. , Stockton CA. This report <br /> also contains a synopsis of the results from the beginning of the <br /> characterization for the subject property in 1994 . <br /> BACKGROUND <br /> The site has a lumber manufacturing business on it and is located <br /> in the topographically flat, commercial/residential area of central <br /> Stockton. Figure 1 is a location map. <br /> An Underground Storage Tank (UST) was removed from this site on <br /> August 1 , 1988 . The 1000 gallon tank reportedly contained unleaded <br /> gasoline. <br /> Sail samples collected from the bottom of the excavation at the <br /> time of the UST removal were analyzed for Total Petroleum <br /> Hydrocarbon as gasoline (TPHG) ; Benzene, Toluene, Ethylbenzene and <br /> Xylene ($TEX) . The soil samples taken below the UST in native soil <br /> showed 790 and 1200 parts per million (ppm) TPHG at 9 and 15 feet. <br /> Soil was excavated to about 15 feet and aerated. The excavation <br /> was filled in with clean soil. <br /> The former UST area is located on the south westerly side of the <br /> 1 <br />