|
Table 1
<br /> Groundwater Monitoring Data
<br /> 1995 to Present
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way, Stockton, California
<br /> Elevation Static Eievatton Top
<br /> Well ID of Top Water of of Ethyl- Total
<br /> &Sample of Casing Level Groundwater Screen TPHG Benzene Toluene benzene Xylenes MTBE
<br /> Depth Date (feet msi) (feet b s) (feet msl) (feet b s) (11 1L) (1t IL) (pg1L) (pg1L) (µg1L) (u IL) Observations
<br /> MW-7 02/16/95 Well Inaccessible
<br /> MW-7 05/17/95 8 88 3050 -2162 300 40,000 2,300 8,200 820 4,800 NA No FP,No S,O=NE
<br /> MW-7 48 08/15/95 8 88 3041 -2153 30,000 1,400 4,400 490 2,800 NA No FP,No S,Yes 0
<br /> MW-7 48 11/29/95 8 88 3056 -2168 45,000 2,100 6,400 800 3,600 NA No FP,No S,Yes O
<br /> MW-7 02/27/96 888 2775 -18 87 40,000 2,700 7,800 740 4,000 NA No FP,No S,Yes 0
<br /> MW-7 48 05/15/96 888 26 13 -17 25 38,000 2,500 7,300 790 4,100 <500*[1] No FP,No S,Yes 0
<br /> MW-7 08/22/96 8 88 2667 -1779 52,000 4,400 9,900 790 4,600 <500*[i] No FP,No S,Yes 0
<br /> MW-7 11/25/96 8 88 26 87 -1799 52,000 3,500 9,100 810 4,700 <600**[1] No FP,No S,Yes 0
<br /> MW-7 02/24/97 8 88 22 89 -1401 25,000 1,300 3,700 500 2,200 <700**[1] No FP,No S,Yes O
<br /> MW-7 05/19/97 8 88 2277 -1389 19,000 970 2,800 390 1,700 <300*[1] No FP,No S,Yes 0
<br /> MW-7 47 08/21/97 8 88 23 89 -1501 19,000 1,100 2,600 490 2,000 <500**[1] No FP,No S,Yes 0
<br /> MW-7 48 11/17/97 888 2491 -1603 2,300 120 190 20 100 <50[l] No FP,No S,No O
<br /> MW-7 47 02/09/98 8 88 2221 -13 33 21,000 1,100 2,800 660 2,700 4,400[1] No FP,No S,Yes 0
<br /> MW-7 47 05/22/98 8 88 1836 -948 9,580 593 919 282 942 <100 No FP,No S,Yes 0
<br /> MW-7 47 08/12/98 888 1857 -969 5,690 289 460 197 628 <2 No FP,No S,Yes 0
<br /> MW-7 47 11/09/98 8 88 1968 -1080 4,970 406 612 119 520 <2 No FP,No S,Yes 0
<br /> MW-7 47 02/17/99 888 1890 -1002 42,300 3,650 8,230 942 5,030 <2 No FP,No S,Yes 0
<br /> MW-7 35 05/25/99 888 18 31 -943 9,910 944 1,910 287 1,550 <2 No FP,No S,Yes 0
<br /> MW-7 47 08/18/99 8 88 1938 -1050 10,400 681 1,040 331 1,500 <2 No FP,No S,Yes O
<br /> MW-7 47 12/17/99[2] 888 2030 -1142 1,790 833 269 9 66 808 <2 No FP,No S,O=NE
<br /> MW-7 47 02/22/00 888 1936 -1048 2,240 15 9 9 8 14 9 399 <2 No FP,No S,Yes 0
<br /> MW-7 41 02/22/00 8 88 1799 -911 33,900 6,560 1,130 1,090 4,610 <2 No FP,No S,Yes O
<br /> MW-7 08/30/00 8 88 1926 -1038 1,590 22 195 49 102 <2 No FP,No S,Yes 0
<br /> Delta
<br /> PAVILION1MyDocuments\ARCOU 1681QTRLY1200012168Q300
<br /> 7 of 8 11130100
<br />
|