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TABLE 3
<br /> GROUNDWATER ANALYTICAL SUMMARY
<br /> ARCO Service Station No 6100
<br /> 25775 Patterson Pass Road
<br /> Tracy,California
<br /> Ethyl- Total
<br /> Sample Date GRO+ Benzene Toluene benzene Xylenes MTBE
<br /> ID Collected ( ) ( ) ( IL) (pg/]L) ( ) (pg/]L)
<br /> MW-6 06/17/03 61,000 A 7,200 A 8,800 A 270 A 17,000 A 110 A
<br /> MW-8 03/15/05 16,000 A <50 A <50 A <50 A 6,100 A <50 A
<br /> 06/21/05 42,000 A 470 A 580 A <50 A 19,000 A 290[10] J
<br /> MW-10 06/22/04 52,000 A 4,400 A 7,900 A 630 A 12,000 A <120 A
<br /> 09/07/04 46,000 A 4,600 A 5,000 A 530 A 9,400 A <100 A
<br /> 12/21/04 44,000[8] J 3,900 A 4,500 A 440 A 8,700 A <100 A
<br /> 03/15/05 31,000 A 3,700 A 3,200 A 270 A 6,500 A <50 A
<br /> 06/21/05 33,000 A 3,800 A 2,400 A 220 A 5,500 A <50 A
<br /> MW-12 06/22/04 71,000 A 10,000 A 19,000 A 1,900 A 13,000 A <500 A
<br /> 09/07/04 62,000 A 9,000 A 14,000 A 1,600 A 11,000 A <120 A
<br /> 12/21/04 57,000[8] J 8,700 A 14,000 A 1,400 A 11,000 A <500 A
<br /> 03/15/05 69,000 A 9,600 A 16,000 A 1,500 A 11,000 A <250 A
<br /> 06/21/05 90,000 A 14,000 A 20,000 A 2,100 A 14,000 A <250 A
<br /> MW-13 06/22/04 81 A 43 A <2 5 A <2 5 A 3 6 A <2 5 A
<br /> 09/07/04 220 A 590 A <2 5 A <2 5 A 4 4 A <2 5 A
<br /> 12/21/04 1,500[8] J 190[7] J 52 A <2 5 A 16 A <2 5 A
<br /> 03/15/05 530 A 69 A <5 0 A <5 0 A 5 4 A <5 0 A
<br /> 06/21/05 140 A 3 1 A <0 50 A <0 50 A 0 63 A <0 50 A
<br /> MW-15 06/22/04 110,000 A 13,000[5] J 33,000[5] J 3,200[5] J 21,000[5] J <500 A
<br /> 09/07/04 100,000 A 12,000 A 28,000 A 3,400 A 21,000 A <500 A
<br /> Arco-6 I 00_Quarter1y_Data Page 2 of 6 57RATV5
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