ARCHIVED REPORTS XR0009958 - Laserfiche WebLink

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�e 1 Groundwater Monitoring Data ARCO Service Station No 2130 7906 North EI Dorado Street, Stockton, California Page 6 of 6 Well Elevation Static Water Groundwater Ethyl- Tota Number Date Top of Casing Top of Screen Level Elevation TPHG Benzene Toluene benzene Xylene MTBE Observations MW-10 11/29/93 1438 53 00 5930 -4492 1,000 <11** <3** <1* 1 0 NA No FP,No S MW-10 03/23/94 1438 5300 5436 -3998 1,300 6 6 6 1 1 6 3 6 NA No FP,No S MW-10 06/22/94 1438 5300 5435 -3997 1,600 5 0 15 3 3 5 5 NA No FP,No S MW-10 09/28/94 1438 53 00 58 11 -4367 NA NA NA NA NA NA No FP,No S MW-10 09/29/94 --- --- --- 1,100 <0 5 <0 5 3 6 4 0 NA No FP,No S MW-10 12/01/94 1438 5300 57 15 -4277 800 <0 5 2 3 08 1 3 NA No FP,No S MW-10 02/28/95 1438 53 00 5424 -3986 300 0 9 <0 5 <0 5 <0 5 NA No FP,No S MW-10 05/19/95 1438 5300 5232 -3794 370 0 9 <0 5 <0 5 <0 5 NA No FP,No S MW-10 08/28/95 1438 5300 53 70 -3932 420 1 2 <0 5 <0 5 <0 5 NA No FP,No S MW-10 12/07/95 1438 5300 52 61 -3823 490 0 7 <0 5 <0 5 <0 5 NA No FP,No S MW-10 02/05/96 1438 5300 50 13 -3575 350 07 <0 5 <0 5 <0 5 NA No FP,No S MW-10 05/30/96 1438 5300 4709 -3271 350*** <6** <0 5 <0 5 <0 5 <6** No FP,No S MW-10 09/18/96 1438 53 00 5084 -3646 510 <15** 10 <0 5 <0 5 <9** No FP,No S MW-10 11/26/96 1438 5300 4872 -3434 <600*** <0 5 <0 5 <0 5 <0 5 <10** No FP,No S MW-10 03/24/97 1438 53 00 4377 -2939 <500*** <5** <0 8** <0 5 <0 5 <7** No FP,No S TBLB 03/23/94 --- --- --- <10 <0 3 <0 3 <0 3 <0 5 NA NA TBLB 06/22/94 --- --- --- <10 <0 3 <0 3 <0 3 <0 5 NA NA TBLB 09/29/94 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA TBLB 12/01/94 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA TBLB 02/28/95 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA Analytical results in parts per billion (ppby- Measurements in feet Datum in mean sea level Static water level measured in feet below top of casing ---=Well not surveyed <=Below detection limit for the analytic methods used * =Raised method reporting limit(MRL)due to high analyte concentration requiring sample dilution ** =Raised MRL due to matrix interference *** =The sample contains discrete non-fuel components eluting in the gasoline range, quantified as gasoline The chromatogram does not match the typical gasoline fingerprint [i1 M Not sampled,as well is scheduled to be abandoned TB=Trip Blank NE=Not evaluated FP=Free Product NA=Not Analyzed S =Sheen N Ixis1080511140M41597MI As Rev 2 F/VQ?