ARCHIVED REPORTS_XR0009561 - Laserfiche WebLink

Home Browse Search

Site Background canepa's Car Wash,Park Sweet page 4 of 8 eater m elevation) as the well collar measuring Points on April 4, 2403, approximately 0 25 feet less (greater gradient was previous quarter The groundwater elevation contours sgradintshe � generally toward the northeast, consistent with historical groundwateranal ical MW-4, MW-6, and MW-7 indicated groundwater monitoring activiries were con�ci d��J3lY 10, 2QQ3 The laboratory in those Quarterly gr collected from M results for the groundwater samplesreported detection limits or 1e collected from MW- that BTEX constituents we were ddetected ected at a modebate conbcentrat on m the -6 was detected in MW-2, samples BTEX constituents le from MW-5 TPH-G p Q$3, and 49 mg/L respectively Laboratory analytical 2, and at relatively elevated concentrations in the samp L to MW-2 and that MTBE was MW-3, and MW-5, at concentrations of 6 25 le collected from tection limit of 500 49/L in the groundwater sample results Indicated that MTBE was detected at a concentration of 400 � al results and the detection not detected at or above an elevate 2 sample was inconsistent with historic EPA Method MW-S Because the result for the MW- les were re-analyzed for MTBE by limit for the MW-5 sample was elevated, the samp wasL The 8260B The results o f the EPA Method 8260B analyses indicated�tehdaaM�Ban limit ofd5 0cµ91 int e of the groundwater samples collected on July 1Q, 2003, `were generally samples from MW-2 and MW-5 at or above the laboratory rep laboratory analytical results consistent with historical monitoring results the July 2003 monitoring event The r in the monitor wells was approximately 26 98 feet below the surveyed oundwater table remained e hove the top of all well screens wring previous quarter The The average depth to ground 2403, l 37 feet deeper than the p well dwat measuring Points on July 10, groundwater gradient was generally toward the groundwater elevation with historical groundwater gradients the northeast, consistent2003 The laboratory Quarterly groundwater collected from MW-1, MW-4, MW 6, and MW-7 indicated y oundwater monitoring activitles c were conducted an November � on limits m those Q groundwater samp reported detects analytical results for the gr or above collected from MW-3, at that BTEX constituents were not ted at a low concentrationinthesample elevated concentrations in samples BTEX constituents w le collected from MW-2, and at relatively e ati y moderate concentrations TPH-G was detected in MW- the 2 MW-3, and MW-5, at concentrations of 11, 0 14, the sample from M analytical results indicated that MTBE was detected at a respectively Laboratory and 50 mg[-, pec in MW-2 and that MTBE was not detected at or above an elevated detection concentration of 1, µ� he oundwater sample collected from MW-�oB�he MW 5 sample was elevated,ause the result for the limit of 1,OOQ µg1L int gi EPA Method 8260B The results of he EPA 5 at thabovebthe 013 sample was inconsistent with dor MTBE by is and the detection limit the samples were re-analyzed les from i n limits of 0 S and 5 0 µgfL, respectively The laboratory analytical results of analyses indicated thateMtTaBE was not detected in the samples were generally consistent with historical laboratory reported the groundwater samples collected on November 6, 2003 monitoring results s during the November 2003 monitoring28 27 feet below the The groundwater table remaineQundwe atereiri the top monitoall r wells nwas approximately revious quarter event The average depth to gr well collar measuring pointt deeper than the P s on November 6, 20 groundwater gradient was generally toward the surveyed The groundwater elevation contours indicated that the gr northeast, consistent with historical groundwater gradients water monitoring activities were conducted on January 28, 2004 The laboratory Quarterly ground MW-6, and MW-7 indicated that analytical results for the groundwater samples collected from MW-4,