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Table 1 <br /> Groundwater Elevations and Sample Analytical Results <br /> Former E-Z Serve Location No 100878 <br /> 1012 West Yosemite Avenue,Manteca,California <br /> i <br /> Well Sampling TOC DTW GWE' PSH TPHg B T E X MTBE <br /> No Date feet (feet) feet feet /L /L /I j) ( /L) (Pg/L <br /> MW-7 2128103 3078 1451 1627 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> (14 5'-29 5') 5/30/035 3078 1662 14 16 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> (Cont) 8/25/035 3078 2038 1040 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> MW-8 5/3/94 3125 16 55 1470 000 84 <1 <1 <1 <1 -- <br /> (14 5'-29 5') 7/15/94 3125 17 51 1374 000 1,400 27 260 48 270 - <br /> 9/27/94 3125 1971 11 54 000 <100 <1 <1 <1 <1 <br /> 12/8194 31 25 1722 1403 000 <50 <0 5 <0 5 <0 5 07 <br /> 3124/95 31 25 14 10 17 15 000 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6122/95 3125 1621 1504 000 <50 <0 5 <0 5 <0 5 <0 5 - <br /> ' 9/15195 3125 19 11 12 14 000 <100 <1 <1 <1 <3 = <br /> 12/12/95 3125 1708 14 17 000 <100 <1 <1 <1 <3 <br /> 2/22/96 3125 1459 1666 000 <50 <0 5 <0 5 <0 5 <1 5 - <br /> 9/17/96 31 25 1739 13 86 000 <50 <0 5 <0 5 <0 5 <0 5 1 <br /> 12/10/96 3125 1457 1668 000 100 23 84 14 11 06 <br /> 4/15/97 3125 1281 1844 000 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6120197 31 25 13 74 1751 000 <50 <0 5 <0 5 <0 5 <0 5 < <br /> 11/21/97 3125 1498 1627 000 -- -- -- -- .. <br /> 1 12/10/98 3125 1181 1944 000 <50 <05 <05 <05 <05 <50 <br /> 2/5/01' 31 25 1345 1780 000 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> 5/24101 3125 14 15 17 10 000 -- -- -- -- -- -- <br /> 11/8/01 31 25 1636 1489 000 <50 <0 30 <0 30 <0 30 <0 60 <1 0* <br /> 1/31/023 3125 13 81 1744 000 <500 <0 5 <0 5 <0 5 <0 5 <1 <br /> 5/2102 3125 1420 1705 000 <500 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> 8123/02 3125 18 16 1309 000 <50 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> 11/22/02 31 25 17 12 14 13 000 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> 2128103' 31 25 15 10 16 15 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> 5/30/035 3125 1732 1393 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> 8/25/035 3125 2107 1018 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> Notes Latest analytical results above their respective Practical Quantitation Limits are in boldface font No known <br /> groundwater monitoring or sampling was conducted between December 10,1998 and February 5,2001 <br /> TOC =Top of casing referenced to USGS Benchmark HSo208[elevation=38 20 feet above mean sea level] <br /> DTW =Depth to water measured from the top of casing <br /> GWE =Groundwater elevation as referenced to benchmark in feet above mean sea level <br /> PSH =Phase Separate Hydrocarbons thickness <br /> TPHg =Total Petroleum Hydrocarbons as gasoline <br /> B =Benzene <br /> T =Toluene <br /> E =Ethylbenzene <br /> X =Total Xylenes <br /> MTBE =Methyl-tert Butyl Ether <br /> µg/L =Micrograms per liter(-parts per billion) <br /> (10'-241) =Well screen interval(m feet) <br /> < =Sample reported as not detected in previous tables,reporting limit not known <br /> Np=No purge sample collected <br /> ' =If PSH present,corrected GWE=TOC-Measured DTW+Corrected PSH <br /> Thickness(PSH Thickness x gas density[0 75]) <br /> z r All analysis by EPA Method 8260E <br /> ' =BTEX and MTBE analyzed by EPA Method 8260E for samples collected in 2002 <br /> a=TPHg,BTEX,and MTBE analyzed by EPA Methods 8015M,802113,and 8260B,respectively ' <br /> 5=TPHg,BTEX,and MT13E analyzed by EPA Methods 8015B,8021B,and 8260B,respectively <br /> =MTBE analysis by EPA Method 8260B <br /> -- =Not measured,sampled,or analyzed <br /> F <br /> I <br /> IS 4IZServa\100878%ReportslEZ876(2003(]3 GW Table) Page 5 of 5 I I <br />