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TO 'I •
<br /> Groundwater Monitoring Data
<br /> 9995 to Present
<br /> Former ARCO Service Station No 2168
<br /> 449 Charter Way, Stockton, California
<br /> Well 11) Elevation Static Elevation lop
<br /> &Sample of fop Water of of Ethyl- local
<br /> Df )th Date of Casing Le el Groundwater Semen I PHG Benzene Toluene benzene X len(,s M I BE 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 3465 -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 12 34 34 30 -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 12 34 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 12 34 31 67 -1933 61,000 7,600 8,500 1,600 6,600 NA No FP,No S,Yes O
<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 O
<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 O
<br /> MW-4 11/25/96 12 34 3078 -1844 72,000 8,800 9,300 1,600 6,100 <500*[1] No FP,No S,Yes O
<br /> MW-4 02/24/97 1234 2682 -1448 40,000 6,700 2,200 900 2,600 <600**[1] No FP,No S,Yes O
<br /> MW-4 05/19/97 12 34 2667 -14 33 57,000 8,700 6,700 1,300 5,000 <600*[1] No FP,No S,Yes O
<br /> MWA 38 08/21/97 1234 2774 -1540 48,000 7,200 5,000 1,200 3,900 <1,000**[1l No FP,No S,Yes O
<br /> MW-4 59 11/17/97 1234 2879 -1645 12,000 4,800 180 370 280 58 No FP,No S, Yes O
<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 O
<br /> MW-4 58 05/22/98 1234 2221 -987 16,700 5,360 611 663 715 <100 No FP,No S, Yes O
<br /> MW-4 58 08/12/98 12 34 2234 -1000 19,300 5,880 890 678 911 <20 No FP,No S, Yes O
<br /> MWA 58 11/09/98 12 34 2342 -1108 23,600 6,340 720 692 875 459 No FP,No S, Yes O
<br /> MW-4 58 02/17/99 1234 2265 -1031 21,300 6,970 950 907 1,030 666 No FP,No S, Yes O
<br /> MW-4 58 05/25/99 1234 2202 -968 53,700 9,870 4,870 <100 4,600 646 No FP,No S,Yes O
<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 O
<br /> MWA 58 12117199{2] 1234 23 98 -11 64 14,700 5,030 959 538 291 586 No FP,No S,0=NE
<br /> MW-4 58 02/22/00 1234 2326 -1092 1,810 477 208 736 182 622 No FP,No S,Yes O
<br /> MW-4 59 06/22/00 1234 21 97 -963 12,000 4,200 35 2940 224 488 No FP,No S,Yes O
<br /> C IARCOQ1681QIRLY12168y200 As Delta
<br /> Page 4 of 7 9/18/00
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