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Site Background Canepa's Car Wash,park Street page 4of5 eater to elevation) as the rit 4, 2003, approximately 0 25 feet less (gr adient was well collar measuring points on Ap groundwater gr previous quarter The groundwater elevationtwith historical gradients generally toward the northeast,consistent 10, 2043 The laboratory analytical ,s ere Quarterly gr MW-3, MW-4, MW-6, and MW-7 mit Indicated groundwater monitoring s collected from MW-1, MW-3, an July ed detection limits to those results for the groundwater camp that BTEX constituents 11 not detected at o above laboratory reported H was detected in MW-2, s were detected at a moderate concentration in the sample collected from MW- samples BTEX constituent the sample Laboratory analytical 2, and at relatively elevated cone on5t or 6 2, 0 063, and f49 mg1L respectively MW-3, and MW-5, at concentrate in MW-2 and that MTBE was in the groundwater sample collected from results indicated that MTBE wadetected ion limit of 500-at1µg�L 400 ?i cal results and the detection not detected at or above an elevatedle was inconsistent with piston F by EPA Method MW-5 Because the result for the MW-2 same r the MW-5 sample was elevated, the Samples Were that MTBE wag not detected in the limit fo 8260B The results of the E at Q°dabove the laboratory reported detection limit of y5 0eµ he samples from MW-2 and M oundwater samples collected on July 10, 2003, generally laboratory analytical results of the gr alts consistent with historical monitoring remained above the top of all well screens during lth26 8 f e le ow the surveyed event The groundwater table previous quarter The The average depth to groundwater in the monitor wells was approx y toward the 10, 2003, 0 37 feet deeper than the p well collar measuring Points on July oundwater gradient was generally ontouys Indicated that the groundwater ele int with historical groundwater gren northeast, consist 2003 The laboratory were MW-4,MVV-6, and MW-7 indicated Quarterly groundwater morittoring activities ollected from MW-1 November ' tion limits to those Q groundwater same t detected at or areported deter analytical results for the gr bove collected from MW-3, at that BTEX constituents were e detected at a low concentration in the psample elevated concentrations m samples BTEX constituents2 and at relatively moderate concentrations in the sample collected from MW- , _ TPH-G was detected in JAW-2,MW-3, and WhataMTgEconcentrations de detected at a the sample from Mw 5 anal ical results Indicated and 50 mg(L, respectively Laboratory Yt 1 100 g/L in MW-2 and that MTBE was not MWt5dBecau eotheresult for the MW 2 concentration of µ limit of 1,000 µg/L in the groundwater sample collected fro the with historical results and the detection limit for sults of tliesample EPA Method 8260B sample was inconsistent EPA Method 8260E Th 5 at or above the the samples were re-analyzed for MTBE by les from MW-2 and MW- res l etively The laboratory analytical results of ts of analyses indicated that MTBE was not detected m the sample laboratory reported detection 'm'ted an November 6, 2003 Fere generally consistent with historical the groundwater samples monitoring results Well" was approximately 28 27 feet below the ter table remained above the top of all well screens during the November 2003 mons onn The groundwater ground-water in the monitor Wel event The average depth to gr deeperthe previous quarter well collar measuring Points on November 6, 20oundwater03, 129 egradient was generally toward the surveyed The groundwatevation with historical groundwater grad1entsgr northeast,consistent28, 2004 The laboratory Quarterly groundwater monitoring activities Were conducteMVV-4, MW-6, on January, Mty1W- he groundwater samples collected from 6, and MW-7 indicated that analytical results fort gr