Laserfiche WebLink
1 INTRODUCTION <br /> Philip Services Corporation (Philip) performed a subsurface investigation and <br /> monitored groundwater conditions at The Earthgratns Company (Earthgrains) facility <br /> in Stockton, California This work was requested by the San Joaquin County Public <br /> Health Services Environmental Health Division (PHS/EHD) in their correspondence <br /> to Earthgrains, dated March 23, 1999 <br /> The subsurface investigation included assessing geological conditions using cone <br /> penetrometer (CPT) technology, and collecting soil and groundwater samples using <br /> Hydropunch apparatus Groundwater monitoring included collecting groundwater <br /> sampling from the thirteen site monitoring wells, and submitting them to an analytical <br /> laboratory for chemical testing Results and findings of this work are contained in the <br /> following sections <br /> 1.1 Site Description <br /> The facility is a bakery product plant located at 2651 South Airport Way in r� <br /> Stockton, California (see Figure 1) The plant straddles Sections 22 and 23, <br /> Township 1 North, Range 6 East of the Mount Diablo Base and Meridian The <br /> site has a general elevation of approximately 17 feet relative to mean sea Ievel <br /> (MSL) <br /> The developed portion of the facility consists of approximately seven acres, <br /> which is relatively flat lying, and is almost entirely covered with asphalt and <br /> concrete The main facility building covers about two acres An approximately <br /> 1,000-foot-long stormwater drainage ditch extends westerly along the south <br /> side of the facility to a south-flowing drainage canal This ditch empties into <br /> the intermittent Duck Creek, which is located about 900 feet south of the <br /> plant <br /> 1.2 Former Underground Storage Tanks and Previous Work <br /> The facility previously had four petroleum hydrocarbon underground storage <br /> tanks (USTs), as shown in Figure 2 A former 10,000-gallon diesel-fuel tank <br /> and two 6,000-gallon gasoline tanks were located near the southwest corner of <br /> the main building A 20,000-gallon diesel-fuel tank was looted on the east <br /> side of the facility <br /> The asoline tanks near the southwest buildingcorner were removed in April <br /> 1987, and the two diesel-fuel USTs were removed in September 1989 The <br /> May 1999 Subsurface Investigation and Groundwater Monitoring Report <br /> ort <br /> The Earthgrams Company Facility <br /> 2651 South Airport Way <br /> Stockton California <br /> Prepared for I m EARTHGRAINS COMPANY Prepared by Philip Services Corp <br /> E 51213821121392EC1125997�0599RLP DOC June 22 1999 <br /> 1 � <br />