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Table 2 <br /> Groundwater Elevation and Analytical Data(ARCO) <br /> ARCO Service Station/12133 <br /> 2908 Benjamin Holt Drive <br /> Stockton California <br /> well Depth Product Groundwater Groundwater Ethyl Xylenes <br /> well Date Elevation to water Thickness Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE DO <br /> Humber Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ugA) NO NO (ug") NO (ug/l) (mg/L) <br /> 3121/94 1660 1431 054 24 000 1 500 86 620 1 500 <br /> E 3 6!27/94 1625 13 96 0 35 19 000 1 500 36 670 1 400 <br /> (cont) 9/29/94 1704 1475 079 24 000 1,600 77 630 1 300 <br /> 12/8194 1668 1489 036 21,000 2 700 58 890 1,900 <br /> 318195 1420 11 91 248 94 000 1 600 130 640 2 600 <br /> 611195 1268 1039 152 58,000 1 900 24 590 2 500 <br /> 9/11195 1501 1272 233 29 000 1 900 <50 640 1,900 <br /> 1215195 1522 — 1293 021 — <br /> 3118196 1040 811 482 15,000 480 12 390 660 <br /> 6118196 1105 876 065 -- <br /> 9125196 1352 1123 247 7,600 160 <5 160 300 <50 — <br /> 1214196 1293 1064 059 <br /> 3119197 P 8 37 6 08 4 56 4 400 46 6 46 99 0 2 <br /> 615197 P 1006 7 77 1 69 — 02 <br /> 8!19/97 P 11 53 924 147 3 900 50 10 41 28 <50 01 <br /> 11/25/97 P 11 70 941 017 - <br /> 3120/98 P 540 311 630 <50 <0 50 <0 50 <050 <0 50 <5 0 2 0 <br /> 6124198 742 — 513 202 - <br /> 9/10198 P 919 — 690 177 1 440 146 391 12 7 5 31 651 <br /> 12/17M 928 699 009 — <br /> 3/10199 P 701 4 72 227 900 4 54 1 68 7 63 245 <5 0 33 <br /> 6/22/99 877 6 48 176 36 <br /> 9/13199 P 1078 849 2 01 481 1 85 <0 50 2 44 0 635 <5 0 1 8 <br /> 12/15/99 1064 835 014 84 <br /> 3/23100 P 595 366 469 889 6 09 0 987 5 36 3 05 <2 50 15 <br /> 6121100 820 591 225 — -- 03 <br /> 9113100 P 998 769 178 977 416 0 882 542 1 50 3 36 1 37 <br /> 12115!00 946 717 052 — 1 47 <br /> 3001 P 739 510 2 07 600 2 52 177 2 58 4 01 303 2 5 <br /> 5110101 726 497 013 33 <br /> 8120101 P 1022 793 296 410 34 74 052 18 <25 <br /> 1215101 938 709 084 — <br /> 3112/02 P 7 63 — 534 175 440' 2 1 12 1 5 1 3 <2 5 1 43 <br /> 616/02 856 627 093 — 073 <br /> 9/24102 P 1040 -811 1 84 <50 <0 50 <0 50 <0 50 <0 50 <2 5 061 <br /> 12/17/02 8 67 6 38 173 — — <br /> 3/18/03 P 856 6 27 0 11 <50 <0 50 <0 50 <0 50 <0 50 <2 5 128 <br /> 6/17103 8 80 651 024 - 0 80 <br /> 9124/03 a P 1070 8411 1 90 66 <0 50 <0 50 <0 50 <00 0 66 036 <br /> I <br /> 11Projectsb4RCOti21331Tableslgwtabtes2133 Page 4 of 36 <br />