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f ' <br /> BRUNSING ASSOCIATES, INC. <br /> 1607 Industrial Way,Belmont,CA 94002 <br /> (415) 637-0170 FAX(415)637-1196 <br /> May 11, 1992 2601 <br /> Ms. Mary Meays <br /> Environmental Health Division <br /> San Joaquin County, Public Health Services <br /> PA Box 2009 <br /> Stockton, CA 95201 <br /> RE: QUARTERLY GROUNDWATER SAMPLING dViR� <br /> PCstil4ii i i .�� �v v�J <br /> SAN JOAQUIN COUNTY SITE#2441 <br /> DOANE PRODUCTS COMPANY <br /> 450 EAST GRANTLINE ROAD <br /> TRACY,CALIFORNIA <br /> Dear Ms Meays- <br /> This report has been prepared to document groundwater sampling performed by <br /> Brunsing Associates, Inc (BAI) at the Doane Products Company (DPC) property <br /> located at 450 East Granthne Road, Tracy California Tlus report has been submitted <br /> with the acknowledgement of Bob Robinson of DPC Monitoring wells MW-1 and P- <br /> 2 were tested for the existence of free product and groundwater samples were <br /> obtained on April 16, 1992. Analytical data for all sampling events are summarized <br /> on Table 1. <br /> Site Background <br /> Monitoring wells MW-1 and P-2 were constructed by BAI on February 27, 1991 as <br /> part of a soil and groundwater investigation in the vicinity of an former <br /> underground storage tank containing diesel MW-1 is a four-inch diameter well <br /> screened in the upper water bearing zone from a depth of 7 0 to 17 feet P-2 is a two- <br /> inch diameter monitoring well screened in the upper water bearing zone from a <br /> depth of 6 0 to 16 feet Additionally, as part of the soil and groundwater <br /> investigation piezometer P-1 was installed at the site on February 27, 1991. <br /> On the basis of this investigation, remedial soil excavation was initiated during the <br /> week of December 9, 1991 as described in the Workplan for Remedial Excavation <br /> dated October 24, 1992 The remedial excavation is documented in a report dated <br /> • February 17, 1992. During the excavation approximately 1,100 loose cubic yards of <br />