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II
<br /> Table 1
<br /> Groundwater Monitoring Data
<br /> 1995 to Present Page 4 of 5
<br /> Former ARCO Service Station No. 2168
<br /> 441 Charter Way, Stockton, California
<br /> Well TD Elevation Static Elevation Top
<br /> &Sample of Top Water of of Ethyl- Total
<br /> Depth Date of Casing Level Groundwater Screen TPHG Benzene Toluene benzene Xylenes MTBE Observations
<br /> MW-5 54 08/21/97 9 28 24 29 -1501 32,000 5,200 3,900 560 3,100 <1,000[1]** No FP,No S,Yes 0
<br /> MW-5 55 11/17/97 9 28 2533 -1605 10,000 1,700 1,300 210 1,100 <500**[1] No FP,No S,Yes O
<br /> MW-5 55 02/09/98 9 28 2262 -1334 4,700 740 520 110 520 <25** [1] No FP,No S,Yes 0
<br /> MW-5 54 05/21/98 928 1876 -948 1,380 167 148 264 125 <100 No FP,No S,Yes 0
<br /> MW-5 54 08/12/98 928 1996 -1068 2,450 472 250 642 284 <20 No FP,No S, Yes 0
<br /> MW-5 54 11/09/98 9 28 2009 -1081 13,800 2,490 1,890 337 1,640 <2 No FP,No S,Yes 0
<br /> MW-5 54 02/17/99 9 28 1926 -998 3,130 438 285 864 386 <2 No FP,No S,Yes 0
<br /> MW-5 54 05/25/99 928 1965 -9 37 11,800 2,060 1,060 <100 1,380 <2 No FP,No S,Yes 0
<br /> MW-5 54 08/18/99 9 28 19 80 -1052 34,400 23,800 1,130 342 1,500 <2 No FP,No S,Yes 0
<br /> MW-6 47 02/16/95 893 3706 -2813 300 39,000 6,400 5,200 850 4,400 NA No FP,No S,O=NE
<br /> MW-6 46 05/17/95 893 30 64 -2171 130,000 9,900 16,000 1,800 10,000 NA No FP,No S,O=NE
<br /> MW-6 46 08/15/95 8 93 3022 -2129 120,000 7,700 9,700 1,500 8,900 NA No FP,No S,Yes 0
<br /> MW-6 45 11/29/95 8 93 3030 -2137 160,000 8,200 11,000 1,700 10,000 NA No FP,No S,Yes 0
<br /> MW-6 02/27/96 893 2755 -1862 96,000 10,000 13,000 1,400 8,100 NA No FP,No S,Yes 0
<br /> MW-6 47 05/15/96 893 2579 -1686 99,000 8,800 12,000 1,400 8,000 <900**[1] No FP,No S,Yes 0
<br /> MW-6 08/22/96 8 93 2648 -1755 98,000 8,200 7,300 1,600 9,000 <1,000**[1] No FP,No S,Yes 0
<br /> MW-6 11/25/96 893 2661 -1768 84,000 9,300 9,500 1,500 8,800 <900**[1] No FP,No S,Yes 0
<br /> MW-6 02/24/97 8 93 2277 -1384 140,000 9,700 11,000 1,400 8,500 <2,000**[1] No FP,No S,Yes O
<br /> MW-6 05/19/97 8 93 2253 -13 60 69,000 7,900 5,000 1,200 7,700 <600*[1] No FP,No S,Yes 0
<br /> MW-6 45 08/21/97 893 23 65 -1472 86,000 7,400 4,000 1,300 7,400 <1,0o0**[1] No FP,No S,Yes 0
<br /> MW-6 41 11/17/97 893 2470 -1577 42,000 5,400 2,100 1,100 6,600 <67 No FP,No S,Yes 0
<br /> MW-6 43 02/09/98 8 93 2201 -1308 62,000 12,000 7,000 1,300 7,400 <i,000**[1] No FP,No S,Yes 0
<br /> MW-6 42 05/22/98 893 1814 -921 66,100 9,740 4,620 1,180 6,820 <100 No FP,No S,Yes 0
<br /> MW-6 42 08/12/98 893 1842 -949 54,700 7,670 2,340 1,230 6,800 <200 No FP,No S,Yes 0
<br /> MW-6 42 11/09/98 8 93 1973 -1080 15,900 1,080 315 267 1,240 <2 No FP,No S,Yes 0
<br /> MW-6 45 02/17/99 893 1879 -986 53,500 9,870 2,720 1,540 8,320 <2 No FP,No S,Yes 0
<br /> MW-6 45 05125/99 893 1812 -919 43,900 7,020 1,880 1,520 8,290 <2 No FP,No S,Yes O
<br /> MW-6 45 08/18/99 893 1926 -1033 40,900 6,260 1,590 1,470 7,460 478 No FP,No S,Yes 0
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<br /> CP1C 1ARCHNEIARC0121681QTRLY12168g399 xls
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