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Table 2 HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS July 2003 Through October 2003 CiLrcle K Store 01205 Date TOC Depth to LPH Ground- Change in TPH43 TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water Elevation 9260B benzene Xylenes 8021B 8260B Elevation (feet) (feet) (feet) (fat) (feet) (1191l) (191l) (µgll) (9911) 018/l) (µg/1) (µ911) (994) MW-1 (Screen Interval m feet 60-260) 7/25/2003 1762 1465 000 297 — — 70000 110 1600 3200 23000 — ND<400 10/912003 1762 1585 000 177 -120 — 3100 34 34 260 820 — NDQO MW-2 (Screen Interval in feet 60-26.0) 7/25/2003 1750 1456 0 00 294 -- - 170 072 ND<0 50 3 6 2 9 — 35 10/9/2003 1750 1580 000 170 -114 -- 76 NDN 50 NDN 50 ND<0 50 ND<10 -- 37 MW-3 (Screen Interval in feet:8 0-28 0) 7/25/2003 1816 1519 000 297 — — 2500 NDN 50 NDN 50 25 13 -- ND<2 0 1019x2003 1816 1639 000 177 -120 — 260 NDN 50 ND<O 50 NDN 50 ND<10 -- ND<2 0 MW4 (Screen Interval In feet 8 0-28 0) 7/25/2003 17 75 1477 000 298 — — 2500 30 27 57 89 — 32 10/911003 1775 1589 000 186 -112 — 1000 NDN 50 NDN 50 7-5 ND<0 — ND<2 0 MW-5 (Screen Interval in feet-4 0-24 0) 7125/2003 1648 1355 000 293 -- — 6400 200 990 2700 11000 — ND<400 10/912003 1647 1475 000 172 -121 — 4500 79 54 600 710 -- NDQO MW-6 (Screen Interval in feet 4 0-24 0) 7/25/2003 1668 1383 000 285 — — 6400 30 200 510 1700 — 320 10/9/2003 1667 15 10 000 157 -128 — 1700 29 17 80 300 — 180 MW-7 (Screen Interval in feet-4 0-24 0) 7/25/2003 1781 1490 0 00 291 — — 31000 ND<25 310 1400 4800 — ND<100 10/9/2003 1781 1618 000 163 -128 7000 ND<10 65 240 1200 - ND<40 MW-8 (Screen Interval in feet 4 0-24 0) 712512003 1726 1423 000 303 — — ND<50 ND<O 50 ND<O 50 ND<D 50 ND<10 — ND<2 0 10/9/2003 1725 1536 000 189 -114 — ND<50 NDN 50 NDN-5O NDN 50 ND<l 0 -- ND<2 0 MW-9 (Street/Interval in feet-DNA) 7/25/2003 1634 1338 000 296 — -- 28000 22 120 2000 6000 -- ND<40 01205 Page i of2