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i _ TABLE 2 - GROUND WATER ANALYTICAL RESULTS BEACON STATION#474 3440 EAST MAIN AVENUE,STOCKTON,CALIFORNIA ' (All results in micrograms per Liter) Monitoring Date Total Aromatic Volatile Organic Compounds Well Collected Petroleum Hydrocarbons Gasoline hfIBE` Behtane Toluene Ethyl- Total benzene X Imes 'a MW-1 12114193 71 <0.5 <0.5 <0.5 03/29/94 <50 !.3 06!2!!94 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 09/20/94 N5 NS NS NS NS 12/23/94 57 X0.5 <0.5 <0.5 03/13/95 <50 <0 5 i <0.5 <0.5 [0.5 <0.5 06120195 <50 <0.5 <0,5 <0.5 <0.5 09/27/95 <50 <0.50 <0.50 <0.50 <Q.SO 12!07/93 <50 <6.50 <0.50 <0.50 <0.50 f 03i28/96 <50 <0.50 <0.50 <0.50 <0.50 09/20/96 <50 <5.0 <0.50 <0.50 <0.50 <0.50 12;06/96 <50 <5.0 <6.50 <0.50 <0.50 <0.50 03/27/97 <50 <5,0 <0.50 <0.50 <0.50 <0.50 L-7197' S7 <5.0 <0.50 <0.50 <0.50 <0.50 + 03/31/98 96 <5.0 06/10/981 <0.50 <0.50 <0.50 <0.50 � NfW-2 12!14!93 63,004 20,000 1,400 03,79/94 60,004 400 2,100 23,000 860 400 1,500 06Y21194 70,000 33,000 840 <2 0 09!20194 57,000 25,000 660 250 560 1273/94 51,000 20,000 780 950 03;13195 49,000 270 1.100 22.000 1,300 284 1,900 06/20!95 26,004 11,000 280 140 a 09/27/95 36,000 440 17,000 510 260 1,100 12.`07/95 24,000 9,100 180 I20 450 03/28/96 16,000 6,500 130 130 { 09;20196 32,000 390 <500 14,000 440 150 1,000 l 12106!96 28,000 <500 17,000 220 50 570 03/27;97 33,000 2,800 6,000 280 <130 670 06/13/97 16,000 <250 4,200 1,700 270 1131/97' 1,700 i 03131/98 5,000 <25 1100, 06/10,98' 86 71 270 i I a 1 NOTES: j Methyl-Tertiary-Butyl Ether. I = Below indicated detection limit. _ = wens not sampled on this date. . cj l� I / i