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site Backgsouad Cartepa's Car Wash,Park Street Page 5 of 5 e saniples laboratory reported detection lioG M-hOand MW-3, ov, les collected fr BTEX constituents were dete to cat ow coon entrations iii the same at concentrations constituents w collected from MW-2, and at relatively �elevated concentrations BTEX con l 1�-2, MW-3, at moderate coneentratio 5 inthe was detected in Mal- in the sarnple from MW- respectively of Q 11, 5 5, 0 2, and 48 mgt-, SfL m 1 MTBE was not detected at 5 d that MTBE was detected at conecent'ations of 8 8 and 5 � anal ical results indicate 1 and MW_2, respectively le Collected from MW Laboratory collected from MW" in the groundwater samp the groundwater Samples an elevated detection iarriit of 1,000 �� b EPA Method 8260E The was inconsistent with his results and the detection limit above W-2 sample for MTBE y les from Because the result for the ed, the samples were reanalyzedTBE was not detected in the Sec p Ply The the MW-5 limit w generally January 28, 2004 were g to reported detection Limits of 0 5 and 10 u�L, P ,results of the EPA Method 82bOB analyses indicated that M r les collected on MW-2 or MW-5 at or above the labor oundwater samp laboratory analytical results of the esults Consistent with historical monitoring of all well screens during the January 2004 monitoring approximately 27 88 feet below the The groundwater table remained above the top revious q depth to groundwater m the monitor wells 0 39 foot shallower than ten Pally toward the event The average1' points on January 28= oundwater gradient was g surveyed well collar measuring p gradients The groundwater elevation historical nidwater gr the � analytical tent with his e laboratory northeast,copses 10, 2004 Th activities were conducted o� 1 6, and MW-7 indicated that BTEX quarterly groundwater monitoring from MW-`l, t in those samples BTEX groundwater samples collected results for the gr reported detection lurii s and MW-3, at Ies collected from MSN-1 constituents were not detected at or above laboratory p 2 and at relatively elevated concentrations in constituents `r'eTe ducted at low concentrations m the saxrtp and MW-5, at concentrations of le collected from W-2, MW-3, moderate concentrations in H_theG was detected tri MW-1, the sample from MW _5 TPH e5pectively 16,060 0 09, 6 4, 0 13, and 50 mglL, 2, MW-3, and indicated that MTBE was detected at concentrations of 41 W 1' MW roundwater Laboratory analytical results fgroundwater sample5 collected from 5 in the g L and 7,000 u in the g ?,4W-2, MW-3, and 4g/L, 140 µ TBE was not detected at or above a detection limit of 5 0 µ MW-5, respectively M 6 and MW-7 Because the results for the reanalyzed collected from MW-4, MW- � les were rearialy�ed for 1vITBE by EPA samples colle E was not detected m the samp les wexe inconsistent with histeohod 8260Bsanalyses indicatedth Pte-tion limits of 5 0, N1W-S samplesntrationroundwater Method 8260B The results of the andAMW-5 at or above the laboratoryreportedin the g les from MW-21 MW-3' les collected on the samples ectiveiy MTBE was detected at re results of the groundwater samples 5 0, and 50 µg11 resp W 1 The laboratory analyte results sample collected from M histoncal monitoring event May 10,2004 were generally consistent with the May 2004 inonitonng or wells was approximately 27 34 feet below thrveThe groundwater table remained above the toptayed f all well screens during the previous quarter The group th to groundwater in the In 0 58 foot shallower thantoward the The average depth a 10, 2004, adient was generally pints on M Y oundwater well collar measuring p ro groundwater elevation co�storicaingtolindwater gradientse gr northeast, consistent with h p 120D0�rJ�038 Canepa Park12 038 Canepa ParklQuarterly lvionrtonng ReportS\2D04 July\Stte Background D7-20D4 doc