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TABLE A (Continued) Constituent B T E X IMTBE TPH-G EPA Method (602)/ (602)/ (602)/ (602)1 (602)/(8260) (5030) (8021 H) (80218) (8021 B) (8021 B) /(8021B) Detection Limits 03 03 03 06 1 0 005 µg/L µ°/L µg/L Fig/L µ8/L mg/L SV-1 1116197 41,000 17,000 3,300 6200 [1,400] 120 I1/15100 1100 34 120 250 1100v 41 SV-2 4/23/98 49,000 66,000 3,200 17,000 26,000*v 270 ' SV-3 7/18/97 71,000 73,000 3 900 19000 [35 0001 280 10/14/99 9,600 2100 440 1,400 14,000♦ 25 SV-4 7/2.2/98 71 000 47 000 1 700 9,400 170,000*v 390 ' 7/11/00 5601 1 lO r 341 601 46,000.' 08 SV-5 10/22/97 55,000 73,000 3,900 19 000 37,000*v 290 ' SV-6 4121/99 65,000 27,000 2,800 13,000 8 600*1P 200 SV-7 8/1196 91,000 75,000 3,000 18,000 7,800 360 ' 10/23/98 90,000 77,000 3,300 18 000 1,800*v 360 SV-8 1/21/98 87 000 67 000 3,200 17 000 6 400*qv 310 SV-9 4/2/97 25,000 ND 2 300 1,900 79,000 53 4/12/00 ND(150) ND(150) ND(l50) ND(300) 97004 ND(25) I B,T,E X=benzene toluene ethyl benzene,and xylene ND=none detected at or above laboratory reported detection limit TPI/-G W total petroleum hydrocarbons,quantified as gasoline ND X=none detected to n level of X MTBE=methyl tertiary butyl ether *-detection limit raised due to elevated petroleum hydrocarbon result NA=not tested for this analyte [x,=EPA Method 602 analysis indicates a concentration of x result is not confirmed by EPA Method 8260,however Future analysis by EPA Method 8260 may indicate that MTBE is not present v=other oxygenates/additives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits 0=as of the tourth quarter 1999 MTBE was analyzed by EPA Method 602 groundwater monitoring for gasoline oxygenates/additives other than MTBE was discontinued I1=as of the third quarter 2000 MTBE and BTEX were analyzed by EPA Method 8021B I I f I ' Page -9-