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rig <br /> r . <br /> PHILIP <br /> if IRIONNED _ <br /> Ult <br /> • + J <br /> 'Ifi;{l 5, , 'ICE <br /> Environmental Services Group o OCT 3 1 <br /> North Central Region , 2' 06 <br /> 1 <br />' October 28, 1996 <br /> 125997/7072/96 <br />' Ms Margaret Lagono <br /> San Joaquin County Public Health Services <br /> Environmental Health Division- Site Mitigation Unit (EHD-SMU) <br /> P O Box 388 <br />' Stockton, California 95201-0388 <br /> I Subject: QUARTERLY GROUNDWATER MONITORING REPORT <br /> Third Quarter 1996 <br /> The Earthgrains Company <br /> (formerly Rainbo Baking Company) Facility <br /> I2651 South Airport Way, Stockton, California <br />' Dear Ms Lagono <br /> Philip Environmental Services Corporation (Philip), is pleased to submit the following <br /> quarterly monitoring report for The Earthgrams Company (Earthgrains - formerly Rambo <br /> lie Baking Company) facility, located at 2651 South Airport Way in Stockton, California <br /> The groundwater monitoring and sampling for this quarter's event was conducted by <br /> Philip on September 16-18, 1996 In addition, comments contained in the EHD-SMU <br />' letter to Earthgrams dated July 16, 1996, are addressed in the "Background" section <br /> below <br />' BACKGROUND <br />' The site is a bakery products plant located at 2651 South Airport Way in Stockton, <br /> California (see Figure 1, Site Location Map) The plant is situated within Sections 22 and <br /> 23, Township 1 North, Range 6 East of the Mount Diablo Base and Meridian The site <br /> has an elevation of approximately 17 feet relative to mean sea level (MSL) <br /> The developed portion of the facility consists of approximately seven acres, is relatively <br /> flat lying, and is almost entirely covered with asphalt and concrete The main facility <br />' building covers approximately two acres An approximately 1,000-foot-long stormwater <br /> drainage ditch extends westerly from the facility to an intermittent, south-flowing drainage <br /> canal This canal flows into the intermittent Duck Creek, which is located approximately <br />' 900 feet south of the plant <br /> The facility previously had four petroleum hydrocarbon underground storage tanks <br /> (USTs) (see Figure 2, Site Plan) The former 10,000-gallon diesel-fuel tank and two <br /> I <br />' E 11213821125997L3QTR96 DOC <br /> PHILIP ENVIRONMENTAL SERVICES CORPORATION <br />' 210 West Sand Bank Road a PO Box 280•Columbia, IL 62236-0230 <br /> (618)281-7173•(800)733-7173•Fax(618)281-5120 <br />