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i i • <br /> TABLE 1 <br /> GROUNDWATER ELEVATION AND ANALYTICAL SUMMARY <br /> Joe's Truck Plaza <br /> 15600 Harlan Road, Lathrop, California <br /> Depth to Well Groundwater Ethyl- Total <br /> Well Date Water Elevation Elevation TPHD TPHG Benzene Toluene benzene Xylenes MTBE <br /> Number Collected (feet) (ft msl ft msl ( ) ( ) ) <br /> MWO-1X 02/27/02 768 1369 601 NA ND[l] ND ND ND ND 570 <br /> 05/21/02 7 91 578 NA ND[1] ND ND ND ND 470 <br /> 08/29/02 825 544 NA ND[1] ND ND ND ND 220 <br /> 12/10/02 904 4 65 NA ND[1] ND ND ND ND 94 <br /> 03/28/03 831 538 NA <50[l] <0 50 <0 50 <0 50 <0 50 570 <br /> 05/21/03 804 5 65 NA <200[l] <2 0 <2 0 <2 0 <2 0 780 <br /> 09/15/03 921 448 240[3] <50 <0 50 <0 50 <0 50 <0 50 57 <br /> 12/I9/03 9 43 426 <100[2] 130 <0 50 <0 50 <0 50 <0 50 320 <br /> ote <br /> msl=Mean sea level <br /> TBE=Methyl tert-bury]ether mglL= micrograms per Etter <br /> HD=Total petroleum hydrocarbons as diesel NA Not Analyzed <br /> HG=Total petroleum hydrocarbons as gasoline ND=Not Detected at Method Detection Limits <br /> TPHD and TPHG analyzed using EPA Method 8015B and the remaining analytes using EPA Method 8260B NM=Not measured <br /> = <br /> [1]=TPHD and TPHG analyzed using EPA Method 8260B NS Not sampled <br /> [2]=Reporting limits were increased due to sample matrix interferences <br /> [3]=Reported concentration includes additional compounds uncharacteristic of common fuels and lubricants <br /> Data prior to September 15,2003 provided by Avalon Environmental Consultants <br /> Joe's Truck Plaza_Quanerly_Data Page 5 of 5 OMA TV5 <br />