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TABLE I ,6F M. SANCHEZ, 1876 COUNTRY CLUB DRIVE, STOCKTON, CA SUMMARY OF RESULTS OF LABORATORY ANALYIE$ OF WATER SAMPLES FROM MONITORINS YELLS Samples taken by Del-Tech Beatechnical: analysis by F8L lab prior to 2/1/96 by SherMaod Labs after. METHODS: BTEX-EPA $020/602; MTBE-EPA 8240; TPH-8-EPA BOLSM; EPA 501 UNITS: BTEX k MTBE, ug/L; TPH-81 mg/L; EPA 501, ug/L DETECTION LIMITS: BTEX - 0.3; TPH-S - 0.05; EPA-501 0.5 NOTE: Detection limits for some samples taken 8125 & 12/94 for BTEX Increased due to sample matrix interferences. Refer to laboratory Morksheets for details. ' MONITORING NELL 11 RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS COMPONENT 4/21193 7/23/93 1111193 1126194 4/29194 8125194 12/29/94 3/23195 811195 1218195 2/1/9b 7/9/96 12/18/96 Benzene , 8250 13000 16000 )6300 8500 10000 9300 11000 12000 3200 10100 5475 9240 ' Toluene 275 3300 1000 490 1000 270 150 200 770 420 173 265 1110 EBenzene 650 2300 1700 650 1500 900 770 900 1800 1100 1020 645 983 Xylene 2250 13000 8300 2700 5400 3200 2400 3100 8000 1600 4200 1665 5180 TPH-8 23.6 23.0 28.0 21.0 17.6 23 25 6.1 19.0 13.0 53 0 32.0 43.1 ' MTBE NT 265 844 Bromodichloromethane ND NT NT NT Bromofors ND NT NT NT Chloroform ND NT NT NT ' D:bramochlaramethane NO NT NT NT Total Trihalomethanes ND NT NT NT MONITORING WELL 12 RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS COMPONENT 4/21193 7123193 1111193 1126/94 4129194 8125194 12/29/94 3123195 9/1195 1218195 2/1196 719196 12/18/96 Benzene 2.2 720 650 ND 13.0 1.8 76 4.1 ND 17.0 0.5 4.0 ND(.3 Toluene ND 210 ND 3.3 ND 1.1 1.0 ND NO 6.0 ND 10.0 ND(.3 EBenzene ND 82.0 ND 47.0 ND 3.6 5.7 ND ND 0.7 0.6 1.0 ND(.3 ' Xylene ND 270 ND 59 ND 2.6 7.4 NO ND ND 0.4 8.0 ND(.3 TPH-S ND 1.9 3,3 0.63 0.41 .71 1.1 ND RD 0.14 .079 0.110 ND(50 MTBE NT ND ND(5 MONITORING WELL 03 RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS COMPONENT 4121193 7/23193 11/1193 1126/94 4/29194 8/25194 12/29/94 3123195 811195 12/8/95 211196 719196 12/18/9b Benzene 730 2200 3300 2100 1000 2200 1500 1100 570 600 479 103 101 ' Toluene 33,0 600 120 53,0 30.0 NO 110 70 5.4 66 6.0 12.0 6.D EBenzene 115 400 390 250 97.0 240 290 190 100 130 153 18.0 13.0 Xylene 240 1300 140 240 40.0 190 290 40 130 51 10.0 36.0 22.0 TPH-8 4.0 6.5 6.2 7,7 2.6 6.1 11 2.4 1.9 2.2 2.67 0.910 ,55D ' MTBE HT 6 0 12 0 Bromodichloromethano ND NT NT NT Bromoform ND NT NT NT Chloroform ND NT NT NT ' Dibromachloromethane ND NT NT NT Total Trihalomethanes NO NT HT NT MONITORING WELL 14 RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS ' COMPONENT 9128194 12/29/94 3123/93 9/1/95 12/8/95 211196 7/9196 1211B/96 Benzene ND ND ND HD 2.0 ND ND ND(.3 Toluene ND HD ND ND 12.0 ND ND ND(.3 EBenzene NO ND ND NO 3.0 ND RD HD(.3 ' Xylene NO ND ND ND 18.0 ND NO ND(.3 TPH-8 NO ND ND ND MD ND NO ND(50 MTBE NT ND ND(5 MONITORING WELL 15 ' RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS RESULTS COMPONENT 9/28194 12/29/94 3123195 811195 12/8/93 211/96 719/96 12/18/96 Benzene ND ND NO ND 0.7 ND ND ND(.3 Toluene NO ND ND ND ND NO ND ND(.3 ' EBenzene NO ND ND NO ND ND ND RD(.3 Xylene ND ND ND ND ND ND ND ND(.3 . TPHg ND NO ND ND ND ND ND ND(50 MTBE NT ND ND(5 ' WM. J HUNTER&ASSOC. SUMMARY 2220 LOMA VISTA DR OF RESULTS OF WATER ANALYSES SACRAMENTO,CA 95825 FROM MONITORING WELLS TABLE r