ARCHIVED REPORTS XR0001148 - Laserfiche WebLink

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TABLE 2 (CONTINUED) ANALYTICAL RESULTS GROUNDWATER SHELL SERVICE STATION 620 WEST CHATTER WAY,STOCKTON, CALIFORNIA (NI results in parts-per-million) Monitoring Date Total Petroleum Aromatic Volatile Organics Well Collected Hydrocarbons Gasoline Benzene Toluene Ethyl- Total benzene Xylenes MW-7 01/10/90 FLH FLH FLH FLH FLH 03/28/90 FLH FLH FLH FLH FLH 07/31/90 FLH FLH FLH FLH FLH 10/24/90 FLH FLH FLH FLH FLH 01/31/91 FLH FLH FLH FLH FLH 04/26/91 54 45 73 1 7 74 07/23/91 NS NS NS NS NS 10/30/91 130 25 64 1 6 10 01/28/92 NS NS NS NS NS 04/30/92 NR NR NR NR NR 07/10/92 14 022 14 054 26 MW-8 03/28/90 86 27 0 250 0 030 0 520 07/31/90 26 84 0 740 0200 0 400 10/24/90 16 68 0 180 0 140 0 170 01/31/91 17 85 037 021 045 04/26/91 15 63 026 015 039 07/23/91 15 64 03 015 035 10/30/91 21 51 021 0 097 012 01/28/92 17 50 012 014 026 04/30/92 13 46 0 092 013 010 07/10/92 72 35 < 0 097 < MW-9 03/28/90 110 18 20 21 12 07/31/90 FLH FLH FLH FLH FLH 10/24/90 110 20 25 22 13 01/31/91 120 27 26 25 15 04/26/91 120 21 24 22 15 07/23/91 110 18 22 21 15 10/30/91 220 21 27 26 21 01/28/92 200 25 24 27 18 04/30/92 160 20 26 36 24 07/10/92 110 22 24 29 17 MW-10 08/01/91 0 069 00026 000037 000043 < 10/30/91 < 00033 < < < 01/28/92 83 00011 000049 000046 < 04/30/92 061 0 032 0 057 0 011 0 066 07/10/92 < < < < < NOTES = Not analyzed FLH = Floating liquid hydrocarbons < = Below Practical Quantitation Reporting Limits per Tri Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites' (August 10, 1990) (POL for BTEX = 0 0005 ppm TPH as - gasoline and diesel = 0 05 ppm) < < Below the indicated detection limit labeled in the analytical laboratory results reports NA Not applicable NS = Not sampled NR = Not requested Aegis E=nvironmental Inc 91 2461Sectember 1 1992