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GROUNDWATER ELEVATION AND ANLAYTICAL DATA -
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way
<br /> Stockton,California
<br /> Elevation
<br /> Top of Static Water Water Depth to Ethyl- Total Dissolved
<br /> Well ID Casing(feet Level Elevation Screen Benzene Toluene benzene Xylenes MtBE Oxygen
<br /> &Sample Date msl) (feet bgs) (feet msl) (feet bgs) TPHg ppb ppb ppb ppb ppb ppb (ppm)
<br /> MW-4 58 2/16/1995 1234 3925 2691 370 77,000 9,200 13 000 1,700 8,000 NA NA
<br /> 58 5/17/1995 3465 2231 89,000 11,000 17,000 2,100 9,900 NA NA
<br /> 59 8/15/1995 3430 -2196 74 000 6,400 10,000 1,600 7,600 NA NA
<br /> 59 11/29/1995 3442 -2209 92,000 7,800 12,000 1,700 7 600 NA NA
<br /> 2/27/1996 3167 1933 61,000 7,600 8,500 1,600 6 600 NA NA
<br /> 58 5/15/1996 3009 -1775 64,000 8,100 8,600 1,600 6,400 <500*[1] NA
<br /> 8/22/1996 3072 -1838 79,000 9200 11,000 1,800 7,400 <700**[1] NA
<br /> 11/25/1996 3078 -1844 72000 8,800 9,300 1 600 6,100 <500*[1] NA
<br /> 2/24/1997 2692 -1449 40 000 6 700 2200 900 2 600 <600**[1] NA
<br /> 5/19/1997 2667 1433 57,000 8,700 6,700 1,300 5 000 <600*[1] NA
<br /> 38 8/21/1997 2774 1540 48,000 7200 5,000 1,200 3 900 <1 000**[1] NA
<br /> 59 11/17/1997 2879 1645 12,000 4 800 180 370 280 58 NA
<br /> 59 2/9/1998 2627 1393 17 000 5,200 540 690 730 <500**[1] NA
<br /> 58 5/22/1998 2221 -987 16,700 5,360 611 663 715 <100 NA
<br /> 58 8/12/1998 2234 1000 19,300 5,880 890 678 911 <20 NA
<br /> 58 11/9/1998 2342 1109 23,600 6,340 720 692 875 459 NA
<br /> 58 2/17/1999 2265 1031 21,300 6,970 950 907 1,030 666 NA
<br /> 58 5/25/1999 2202 -968 53 700 9,870 4,870 <100 4 600 646 NA
<br /> 58 8/18/1999 2309 1075 34,400 7,390 4,200 1,260 3,610 572 NA
<br /> 58 12117199[2] 2398 -1164 14,700 5,030 859 538 291 586 NA
<br /> 58 2122/2000 2326 -1092 1,810 477 208 736 182 622 NA
<br /> 59 6/22/2000 2197 -9 63 12 000 4200 35 2940 224 498 NA
<br /> 8/30/2000 2299 -1065 27,200 8,180 687 748 1,170 90 NA
<br /> 11/21/2000 2369 -1135 13 200[4] 4 540 <50 438 306 576 NA
<br /> 2/15/2001 2378 1144 24 800[6] 6200 188 790 566 552 1 0
<br /> 5/17/2001 2301 1067 16 600[5] 4,720 117 498 514 582 16
<br /> 8/15/2001 2434 -1200 20,000 4,900 110 830 910 <100* 19
<br /> 12/6/2001 2545 1311 <50 000 6,200 <500 800 660 <500* to
<br /> 2/14/2002 23 89 -1155 20,000 5,800 200 1 100 890 <100[10] 1 0
<br /> 6/13/2002 2415 1181 21,000 4,400 170 860 790 <50[10] 08
<br /> 8/22/2002 2518 -1284 32,000 9,700 800 1,600 1,700 100 08
<br /> MW 5 39 2116/1995 928 3578 -26 50 370 180,000 8,500 15,000 2,200 12,000 NA NA
<br /> 55 5/17/1995 3123 -2195 22,000 3,400 2100 390 2,400 NA NA
<br /> 55 8/15/1995 3083 2155 32 000 4,200 3,500 410 2 500 NA NA
<br /> 55 11/29/1995 3100 2172 52000 8,300 8100 810 4,100 NA NA
<br /> 2/27/1996 28 19 -1891 20,000 3,200 1900 440 1,800 NA NA
<br /> 55 5/15/1996 2666 1738 43 000 6,500 5 000 790 3,400 <500*[1] NA
<br /> K U5 9P AK0T216813„QI'R Or7bi,1_2_34s 4 of 8
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