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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 /> . Well Sampling TOC DTW GWE' PSH TPHg B T E X MTBE <br /> No Date (feet) (feet} (feet) (feet) (11gII Mpg/L) (µg/L) (µg/L) (µg/L) (ig/0 <br /> MW-8 5/3194 3125 1655 1470 000 84 <1 <1 <1 <1 <br /> (14 5'-29 5') 7/15/94 31 25 1751 1374 000 1,400 27 260 48 270 -- <br /> 9/27/94 3125 1971 1154 000 <100 <1 <1 <1 <1 -- <br /> ' 12/8/94 3125 1722 1403 000 <50 <0 5 <0 5 <0 5 07 <br /> 3/24/95 31 25 1410 17 15 000 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6/22/95 31 25 16 2t 1504 000 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 9/15/95 3125 19 11 1214 000 <100 <1 <1 <1 <3 -+ <br /> 12/12/95 3125 t7 08 14 17 000 <100 <1 <1 <1 <3 <br /> 2/22/96 31 25 1459 1666 000 <50 <0 5 <0 5 <0 5 <1 5 <br /> 9/17/96 3125 t7 39 1386 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 31 25 1281 1844 000 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6/20/97 31 25 1374 1751 000 <50 <0 5 <0 5 <0 5 <0 5 < <br /> 11/21/97 3125 1498 1627 000 -- -- -- -- - <br /> 12/10/98 31 25 1181 1944 000 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 2/5/012 31 25 1345 1790 000 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> 5/24/01 3125 14 15 17 10 000 -- -- -- -- -- <br /> 11/8/01 3125 1636 1489 000 <50 <0 30 <0 30 <0 30 <0 60 <1 0* <br /> 1/31/02' 31 25 1381 1744 000 <500 <0 5 <0 5 <0 5 <0 5 <1 <br /> 5/2/02 31 25 1420 1705 000 <500 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> 8/23/02 31 25 18 16 1309 000 <50 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> ' <br /> 11/22/02 31 25 1712 14 13 000 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> 2128/03° 31 25 15 10 16 15 000 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <br /> 5/30/03' 31 25 1732 1393 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 /> pg/L. =Micrograms per liter(--parts per billion) <br /> (10'-24') =Well screen interval(in 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(FSH Thickness x gas density[0 75]) <br /> 2 =All analysis by EPA Method 8260B <br /> 3 =BTEX and MTBE analyzed by EPA Method 8260B for samples collected In 2002 <br /> =TPHg,BTEX,and MTBE analyzed by EPA Methods 8015M, 802113,and 8260B,respectively <br /> s=TPHg BTEX,and MTBE analyzed by EPA Methods 8015B,8021B,and 8260B,respectively <br /> =MTBE analysis by EPA Method 8260E <br /> =Not measured,sampled,or analyzed <br /> II I r <br /> I I <br /> ! I I <br /> I <br /> I I <br /> ' I <br /> i <br /> II S"r=ZServe110p87B\RIeporls1EZ878(2003 Q2 GW Table) Page 5 of 5 ' <br />