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TABLE 2 HISTORICAL GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA FORMER CHEVRON SERVICE STATION 09-5075 2405 AIRPORT WAY STOCKTON CALIFORNIA WELL I D1 ETHYL- ELEVATION BENZENE TOLUENE BENZENEXYLENES TPH4 DTW 8PT WTO OC DATE b b b b b feet eet e MW-1 1860 04/06/89 ND<0 4 ND<0 4 ND<0 5 ND<1 0 32 4786 - 2925 12/04190 NO 40 5 NO<0 5 ND<0 5 NO<o 5 NO<50 54 95 .- X36 36 06119/92 - - - - 5664 000 -3804 04/13/93 NO' NO, NO, NO. ND' 5537 0 OD ,36 77 0722193 NO, NO' NO' ND' NO' 5618 000 3658 10113193 140 140 24 04 020 60173 000 -3$13 04/06/94 ND' ND" ND' ND' ND' 5471 000 3611 1864 07108/94 ND<0 5 ND<0 5 ND<0 5 ND<O 5 NO<50 5444 000 -3380 08/22/94 - -- - 5532 000 -3668 101071$4 NO NO ND NO NO 5620 000 -3766 01/13195 ND<0 5 ND<0 5 ND<0 5 NO<0 5 ND<50 5485 000 -3621 1840 04114195 NO<0 5 NO<0 5 ND<0 5 NO<O 5 NO-50 5212 000 -3372 07/27/95 NO<0 5 ND<0 5 ND<0 5 ND<0 5 ND<50 5087 000 -3247 MW-2 1668 12/04/90 NO<O 5 ND<0 5 ND<0 5 ND<0 5 NO<50 5316 - -3648 06119192 54 86 000 3010 04/13/93 ND' ND' ND' ND' ND' 5359 000 -3691 07/22193 ND' ND' ND` ND' ND' 5338 Goo -3670 10/13/93 ND' NO' ND' NO' NO' 5494 000 -3826 04/06/94 NO' NO' NO' NO' ND' 5494 000 38 28 1688 07108/94 NO<0 5 ND<0 5 ND<0 5 NO<0 5 NO-50 5266 000 3576 08/22/94 - - - 5354 000 3666 10/07/94 19 20 ND' 18 ND' 5441 000 3753 01/13195 NO 4O 5 ND<0 5 ND<0 5 NO<0 5 NO<50 5353 000 -3665 1662 04/14/95 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<50 5034 000 3372 07127195 0 971 NO<0 5 NO<0 5 ND<0 5 NO<50 4908, 000 3246, MW- 17 36 12/04/90 ND<0 5 ND<0 5 ND<0 5 NO<0 5 NO<50 5384 - 3653 06119192 - 5558 000 -3820 • 04113/93 ND' ND* ND' ND' NO' 5439 000 -3703 07122/93 ND' ND' ND' ND' ND' 5405 000 -3672 10/13/93 5569 000 -3833 04106/94 55 94 Is 02 ND' 5368 000 -3632 1760 07/08/94 ND<0 5 NO<O 5 ND<0 5 ND<0 5 NO<50 5338 000 -3578 08!22194 - -- - 5421 000 -36 61 10/07/94 ND' ND' ND' ND' ND' 5511 000 -3751 01123!95 NO<0 5 NO<0 5 ND<0 5 ND<0 5 NO<50 5392 000 -36 32 1734 04/14/95 ND<0 5 ND<0 5 ND cO 5 ND<0 5 NO<50 5118 000 -3384 07127/95 ND<0 5 NO<O 5 NO<0 5 ND<0 5 NO C50 49 87 1 000 32 53 MW-4 1670 01/24/91 ND<0 5 NO<0 5 ND<0 5 ND<0 5 NO<50 5308 - -3638 a6119192 - 5477 000 _3807 04/13/93 ND' ND' ND' ND' ND' 5356 000 3685 07/22193 -. WELLHEAD DAM GED 10/13/93 - - - WELLHEAD DAM GED 04/06/94 - WELL HEAD DAM kGED 1742 07/08/94 ND<0 5 ND<0 5 ND<0 5 ND<50 5311 000 3669 08/22/94 6399 000 36$7 10/07/94 ND' ND' ND' ND' ND' 5488 000 3746 01/23/95 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND 450 5453 000 3711 1717 04/14/95 ND cO 5 ND<0 5 NO<0 5 ND<0 5 ND<50 5080 000 3363 07127195 ND<0 5 ND<0 5 NO<0 5 NO<0 5 NO<50 49 52 0 00 -3235 MW_6 1774 08/22194 ND<0 5 ND<0 5 ND<0 5 ND<0 5 NO<50 5429 000 -3655 10/07194 ND' ND' NO, NO' ND' 5615 GOD -3741 01/23/95 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND c50 5451 000 -3677 1726 04/14/35 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<50 5110 000 -33 84 07/27/95 1 ND<0 5 I NO<0 5 ND<0 5 1 ND 40 5 I NO c50 li 49831 000 -3257 All elevations given as feet relative to mean sea level =Information on minimum quantitation limits not available TOC=Top of casing ppb=Parts per billion OTW=Depth to water -=Not sampled SPT=Separate-phase hydrocarbon thickness NO=Not detected at or above method detection limit WTE=Water table elevation Note See laboratory reports for method detection limits TPH-G=Total petroleum hydrocarbons as-gasoline 0182TAB2wk4 ❑® GROUNDWATER ED TECHNOLOGY