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TABLE B SUMMARY OF GROUNDWATER ANALYTICAL RESULTS FORMER ECONO GAS STATION 4325 FAST WASHINGTON STREET STOCKTON, CALIFORNIA ETHYL- 'WELL;' `•>' VAT'E BENZENE BENZENE TOLUENE XYLENES TPHg COMMENTS -10,, r SAMPLED 1t Il u Il 0911 � 1 u MW-27 10/03/91 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 01/28/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/21/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/24/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 12/16/92 0.52 ND(0 50) ND(0 50) ND(1 5) ND(50) 01/29/93 ND(0 50) ND(0 50) ND(0.50) ND(1 5) ND(50) 05/26/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/19/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 06/07/94 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/04/95 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 02/23/96 NS NS NS NS NS MW-28 10/03/91 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 01/28/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/21/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/24/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 12/16/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 01/29/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/26/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/19/93 ND(0 50) ND(0 50) NO(0 50) ND(1 5) ND(50) 06/07/94 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/04/95 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 02/23/96 NS NS NS NS NS MW-29 10/04/91 053 ND(0 50) ND(0 50) ND(1 5) ND(50) 01/28/92 066 ND(0 50) ND(0 50) ND(1 5) ND(50) 05/21/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/24/92 056 ND(0 50) ND(0 50) ND(1 5) ND(50) 12/16/92 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 01/29/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/26/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/19193 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 06/07/94 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/04/95 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 02/23/96 NS NS NS NS NS MW-30 10/04/91 38 ND(0 88) 15 ND(2 5) 340 Slight Sheen 01/28/92 25 ND(1 2) ND(1 0) ND(3 2) 710 05/21/92 98 ND(0 50) 10 ND(1 5) 220 08/24/92 12 ND(1 0) 17 ND(2 7) 320 12/16/92 47 ND(0 50) ND(0 50) ND(1 5) 170 01/29/93 27 ND(0 50) ND(0 50) ND(1 5) 67 05/26/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 08/19/93 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 06/07/94 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 05/04/95 ND(0 50) ND(0 50) ND(0 50) ND(1 5) ND(50) 02/23/96 1 ND(0 30 ND(O 30) ND(0 30) ND(0 60) ND(100) NOTES 1)TPHg#Totat Petroleum Hydrocad)ons as gasokm 2)ugA rs Rricr�per!der(parts Per 5ica), 3)NS-;Not Sampled,Sampled Amualyr#M,29 and MW-O are sampled quart",afternah9 from am well to the atter} 4 NO im Not Detected detection fimlts in