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TABLE A Historic Groundwater Analytical Data Canepa's Park Street(September 1994-April 2006) Other • Conshtuenl B T E X MTBE Oxygenates/ TPL1-G Additives EPA Method (602/8020/ (60218020/ (602/8020/ (602/8020/ (8020/82606) (8260B) (5030/L.UFT/ 8021B/8260B) 8021B/8260B) 8021B/8260B) 8021B/8260B) 8015M) Detection Limits 03 03 03 06 10 05 0 05 µOL µ81L µg/L µg/L µg/L µPJL mg/l. MW 7 9/22/1994 ND 54 2 1 94 NA NA 120 2/14/1995 24 26 65 13 NA NA 057 5/4/1995 15 76 ND 49 NA NA 025 8/10/1995 1 1 49 064 27 NA NA 043 4/3/1997 06 22 ND ND [4 81 NA 019 7/21/1997 04 l 6 ND ND [3 61 NA 013 10/23/1997 05 22 ND ND NDv NA 0 l8 1122/1998 08 3 ND ND NDv NA 021 4/24/1998 059 24 ND ND NDv NA 0 17 7/23/1998 I1 12 ND ND NDv NA 010 10/21/1998 04 1 9 ND ND NDv NA 010 1/20/1999 04 1 8 ND ND NDv NA 0 10 4/23/1999 0 3 14 ND ND NDv NA 008 7/28/1999 ND 12 ND ND NDv NA ND 10/15/1999 ND 08 ND ND NDv NA 006 111912000 ND 08 ND ND NDv NA 006 4/19/2000 ND ND ND ND NDv NA Oil 7/13/2000 ND 08 ND ND NDv NA ND 10/13/2000 ND ND ND ND NDv NA ND 1/2/2001 12 ND ND ND NDv NA 010 4/13/2001 ND ND ND ND NDv NA ND 7/1812001 1 <0 3 <0 3 <0 3 <0 6 <1 Ow NA <0 05 10/9/2001 09 <0 5 <0 5 <10 <0 5W NA 009 1//2002 <0 5 <0 5 <0 5 <10 1 4v NA <0 05 419/2002 <0 5 <0 5 <0 5 <1 0 1 5 v NA 006 7/5/2002 <0 5 <0 5 <0 5 <10 20v NA 006 10/17/2002 <0 5 <0 5 <0 5 <l 0 3 3 v NA 006 1/13/2003 <0 5 <0 5 <0 5 <1 0 <5 00 NA 006 4/4/2003 <0 5 <0 5 <0 5 <1 0 <5 0# NA <0 05 7/10/2003 <0 5 <0 5 <0 5 11/6/2003 <0 5 <0 5 <0 5 <1 0 <5 0# NA <0 05 1/28/2004 <0 5 <0 5 <0 5 <1 0 <5 04 NA <0 05 5/10/2004 <0 5 <D 5 <0 5 <1 0 <5 0# NA <0 05 7/1412004 <0 5 <0 5 <0 5 <1 0 <5 0# NA <0 0$ 10/12/2004 <0 5 <0 5 <0 5 <1 0 is NA <0 05 1/14/2005 <0 5 <0 5 <0 5 <1 0 2S <0 5<5 0 <0 05 4/12/2005 <0 5 <0 5 <0 5 <1 0 15S <0 5<5 0 <0 05 7/15/2005 <0 5 <0 5 <0 5 <1 0 l Is I <0 5<5 0 <0 05 10!7/2045 <0 5 <0 5 <0 5 1 <1 0 09$ 1 <0 5<5 0 <0 05 1/17/2006 <0 5 <0 5 <0 5 <10 I is <0 5-<5 0 <0 05 4/28/2006 <0 5 <0 5 <0 5 <1 0 <0 5$ <0 5<5 D 1 <0 05 8 T E X=benzene toluene ethyl benzene and total xylenes ND=none detected at or above laboratory detection limit TPH-G—total petroleum hydrocarbons quantified as gasoline ND{X)—none detected to a level of X MTBE—methyl tertiary butyl ether •=detection limit raised due to interference from non target pg/L—micrograms per liter—parts per billion(ppb) analytes mg/L=milligrams per liter—pans per million(ppm) NA—not tested for this analyte [x]=EPA Method 602 analysts indicated a concentration of x result was not confirmed by EPA Method 826013 however subsequent analyses by EPA Method 8260 indicates MTBE was present v e ether oxygenatesiadditives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits —=Sample chromatogram does not resemble typical gasoline standard chromatogram The sample was further analyzed and cis 1 2 Dichloroethene Trichloroethene and Tetrachloroethene were detected at concentrations of 16 5 21 2 and 66 1 4g/- &=other oxygenatesiadditives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits With the exception of Di isopropyl ether which was detected above the laboratory reported detection limit •♦-EPA Method 602 indicated that MTBE was present at 240µ8l1. However EPA Method 8260 indicated in the previous monitoring event that MTBE was not present in the monitoring well at or above the laboratory reported detection limit P 12f100An r once a ar 038C Cane a Park\Re orts\Re orts\2038C Cane a s 2e a oil s �M p � p p p p pn`� � n 'qmr .�[MW Analytical Apnl 2006 x[s