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Table 1
<br /> Groundwater Monitoring Data
<br /> 1995 to Present Page 3 of 5
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way, Stockton, California
<br /> Well ID 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-4 58 02/16/95 1234 3925 -2691 370 77,000 9,200 13,000 1,700 8,000 NA No FP,No S,O=NE
<br /> MW-4 58 05/17/95 1234 34 65 -2231 89,000 11,000 17,000 2,100 9,900 NA No FP,No S, O=NE
<br /> MW-4 59 08/15/95 1234 3430 -2196 74,000 6,400 10,000 1,600 7,600 NA No FP,No S,Yes O
<br /> MW-4 59 11/29/95 1234 3442 -2208 92,000 7,800 12,000 1,700 7,600 NA No FP,No S,Yes O
<br /> MW-4 02/27/96 1234 3167 -1933 61,000 7,600 8,500 1,600 6,600 NA No FP, No S,Yes 0
<br /> MW-4 58 05/15/96 1234 3009 -1775 64,000 8,100 8,600 1,600 6,400 <500*[1] No FP,No S,Yes 0
<br /> MW-4 08/22/96 1234 3072 -1838 79,000 9,200 11,000 1,800 7,400 <700**[1] No FP,No S,Yes 0
<br /> MW-4 11/25/96 1234 3078 -1844 72,000 8,800 9,300 1,600 6,100 <500*[1] No FP,No S,Yes 0
<br /> MW-4 02/24/97 1234 26 82 -1448 40,000 6,700 2,200 900 2,600 <600**[11 No FP, No S,Yes 0
<br /> MW-4 05/19/97 1234 2667 -1433 57,000 8,700 6,700 1,300 5,000 <600*[1] No FP,No S,Yes O
<br /> MW-4 38 08/21/97 1234 2774 -1540 48,000 7,200 5,000 1,200 3,900 <i,000*•[1] No FP,No S,Yes 0
<br /> MW-4 59 11/17/97 1234 2879 -1645 12,000 4,800 180 370 280 58 No FP,No S,Yes 0
<br /> MW-4 59 02/09/98 1234 2627 -13 93 17,000 5,200 540 690 730 <500**[1] No FP,No S,Yes 0
<br /> MW-4 58 05/22/98 1234 2221 -987 16,700 5,360 611 663 715 <100 No FP,No S,Yes 0
<br /> MW-4 58 08/12/98 1234 2234 -1000 19,300 5,880 890 678 911 <20 No FP,No S,Yes 0
<br /> MW-4 58 11/09/98 1234 2342 -1108 23,600 6,340 720 692 875 459 No FP,No S,Yes 0
<br /> MW-4 58 02/17/99 1234 22 65 -1031 21,300 6,970 950 907 1,030 666 No FP,No S,Yes 0
<br /> MW-4 58 05/25/99 1234 2202 -968 53,700 9,870 4,870 <100 4,600 64 6 No FP,No S,Yes 0
<br /> MW-4 58 08/18/99 1234 2309 -1075 34,400 7,390 4,200 1,260 3,610 572 No FP,No S,Yes 0
<br /> MW-5 39 02/16/95 9 28 35 78 -2650 370 180,000 8,500 15,000 2,200 12,000 NA No FP,No S,O=NE
<br /> MW-5 55 05/17/95 9 28 3123 -2195 22,000 3,400 2,100 390 2,400 NA No FP,No S,O=NE
<br /> MW-5 55 08/15/95 928 3083 -2155 32,000 4,200 3,500 410 2,500 NA No FP,No S,Yes 0
<br /> MW-5 55 11/29/95 9 28 3100 -2172 52,000 8,300 8,100 810 4,100 NA No FP,No S,Yes 0
<br /> MW-5 02/27/96 9 28 2819 -18 91 20,000 3,200 1,900 440 1,800 NA No FP,No S,Yes 0
<br /> MW-5 55 05/15/96 9 28 2666 -1738 43,000 6,500 5,000 790 3,400 <SOD*[11 No FP,No S,Yes O
<br /> MW-5 08/22/96 9 28 2714 -1786 58,000 8,700 8,200 880 4,500 <500*[1] No FP,No S,Yes 0
<br /> MW-5 11/25/96 928 2733 -1805 53,000 7,000 6,100 800 4,000 <600**[1] No FP,No S,Yes 0
<br /> MW-5 02/24/97 9 28 2330 -1402 40,000 4,400 4,700 590 3,100 <700**[11 No FP,No S,Yes 0
<br /> MW-5 05/19/97 928 23 21 -13 93 43,000 5,500 4,300 660 3,800 <300* 1] No FP,No S,Yes 0 jl
<br /> �coutac�e
<br /> CP\C\ARCHIVES ARCO121681QTRLY12168g399 xis
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