Laserfiche WebLink
TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> ARCO Service Station No. 0548 <br /> 1612 Hammer Lane <br /> Stockton, California <br /> (Page 2 of 2) <br /> Well/ Static <br /> Sample Elevation of Water Elevation of Ethyl- Total <br /> Number Date Top of Casing Level Groundwater TPHg. Benzene Toluene benzene Xylenes Observations <br /> MW-4 <br /> W-25-MW4 10/30/91 11.57 50.45 <50 <0.50 <0.50 <0.50 <0.50 No FP, No S, No 0 <br /> -3$.8$ <br /> MW-4(63) 03/18/92 11.57 47.24 -35.67 <50 <0.50 <0.50 <0.50 <0.50 No FP, No S, No 0 <br /> MW-4(63) 06/10/92 11.57 48.94 -37.37 <50 <0.50 <0.50 <0.50 <0.50 No FP, No S, No 0 <br /> MW-4(64) 09/04/92 11.57 50.65 -39.08 <50 <0.50 <0.50 <0.50 <0.50 No FP, No S. Yes 0 <br /> MW-4(64) 12/04/92 11.57 49.73 -38.16 <50 <0.50 <0.50 <0.50 <0.50 No FP, No S, Yes 0 <br /> MW-4(63) 03/04/93 11.57 46.89 -35.32 <50 <0.5 <0.5 <0.5 <0.5 No FP, No S, Yes 0 <br /> NW-4(63) 06/07/93 11.57 45.22 -33.65 <50 <0.5 <0.5 <0.5 <0.5 No FP, No S, No 0 <br /> 14W-5 <br /> W-44-MW5 03/29/93 9.37 44.25 -34.88 930 16 <0.5 1.9 9.7 No FP, No S, Yes 0 <br /> MW-5(61) 06/07/93 9.37 43.38 -34.01 1,100 40 1.4 42 58 No FP, No S, Yes 0 <br /> Analytical results in parts per billion (ppb) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> Elevation datum is mean sea level <br /> Measurements in feet <br /> NS = Not sampled <br /> NM = Not measured <br /> * = This well was paved over on 03/04/93. EMCON returned on 03/10/93, and was instructed by RESNA personnel not to sample the well due to construction <br /> activities. <br /> ** = Raised MRL due to matrix interference. <br /> *** = The sample contains a lower bailing point hydrocarbon mixture quantified as gasoline; the chromatogram does not match the typical gasoline <br /> fingerprints. <br /> < = Below detection limit for analytical methods used <br /> # = Bailer blank <br /> �P = Free product, S = Sheen, 0 = Obvious product odor <br /> = Sample analyzed for total oil and grease; concentration below 5.0 parts per million <br /> Sample designations: <br /> MW-4(34) - Well ID and sample depth (feet) <br /> W-24-MWSR Water sample, sample depth (feet), R = rinsate blank* = Raised MRL due to high analyze concentration requiring sample dilution. <br /> 0629ccar <br /> 30004-8 <br />