ARCHIVED REPORTS_XR0008588 - Laserfiche WebLink

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. 1 * ,, 1" GROUNDWATER ONITORING DATA Former Beacon Station No 12419 2350 Waterloo Road,Stockton, California ethyl- Depth to TQC GW Well TPHg benzene toluene benzene xylenes MTBE DIPE ETBE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation Number Date (U91) (u 1L) (u 1L) (u 1L u 1L) u 1L u 1L u 1L u 1L (u !L (u 1L) (u 1L u 1L (u 1L) (feet feet sea level feet sea level Comments AS-2 10/20100 29000 140 1600 650 3100 <0 50 <0 50 <0 50 <0 50 <5 0 <50 610 1 1 63 4152 2076 2076 screened 12/21/00 18000 120 1200 $30 2800 <50 na na na na na na na na 4598 2522 slight odor I r*sheen interval 03/27/01 11000 9t 820 230 1800 <20 na na na na na na na na 4651 2575 slight odor 1 no sheen 123 129 06126/01 12000 80 68 220 2000 <2 5 <2 5 <2 5 <2 5 <25 <250 <50 <2 5 so 4925 2849 slight odor 1 no sheen 09/05/01 7400 75 31 140 1100 <20 na na na na na na na na 5329 -3263 slight odor 1 no sheen 1150101 6600 70 15 110 740 <25 na na na na na na na na 5415 3339 odorino sheen 02/27/02 3200 46 98 28 280 <10 na na na na na na na na 5083 3007 ododno sheen 05/16102 3500 40 10 74 410 <2 0 <2 0 <2 0 <20 <20 <200 180 <2 0 <20 5110 2232 2878 ododno sheen 09/13/02 3400 120 110 89 480 <10 na na na na ria na na na $937 -3705 odor!no sheen 12/04/02 1400 40 12 11 110 <5 0 na na na na na na ria na 5839 3607 no odor 1 no sheen 02117/03 420 16 49 28 43 <0 50 na na na na na na na na 5408 31 76 no odor 1 no sheen 06103/03 450 27 12 32 90 <0 50 <0 50 <0 50 <0 50 <5 0 <50 58 <0 50 <0 50 5396 3164 no odor 1 no sheen 09118103 3800 16 094 1 2 66 <5 0 na na ria na na na na ria 6031 3799 no odor 1 no sheen 11124/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5880 -3648 not sampled 02123104 2200 76 1 7 72 74 <0 50 <0 50 <0 50 <0 50 <5 0 <50 77 <0 50 <0 50 5523 -3291 odor 1 no sheen 06107/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5578 3346 not sampled 09/07/04 1200 <0 50 <0 50 <0 50 <0 50 <0 50 na no na na na na na na 6236 -40 04 no odor 1 no sheen 12110104 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5978 3746 riot sampled 03/09/05 55 088 60 096 27 <0 50 <0 50 <0 50 <0 50 <5 0 <50 15 <0 50 <0 50 5605 3373 odor 1 no sheen 05/24/05 ns ns ns ns ns ns ns its ns ns ns ns ns ns 5125 -2893 not sampled A5 3 10/20/00 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 81000 <0 50 <0 50 4607 2060 2547 screened 12/21/00 <50 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 4805 2745 no odor 1 no sheen interval 03127/01 <50 2 3 5 8 <0 50 <0 50 <5 0 na na na na na na na na 46 82 2622 no odor/no sheen 80-85 06126/01 <50 <0 50 0 52 <0 50 <0 50 <0 50 40 50 <0 50 <0 50 12 <50 690 8 9 <0 50 4896 28 36 no odor 1 no sheen 09105/01 100 <0 50 <0 50 <0 50 18 <50 na na na na na na na na 54 11 3351 odor/no sheen 11130101 74 13 <0 50 <0 50 <0 50 <5 0 na na na na na ria na ria 5393 3333 odorino sheen 02/27/02 73 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na ria na ria 5067 30 07 no odor 1 no sheen 05116102 <50 <0 50 1 8 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 47 9 4 <0 50 50 97 2214 -2883 no odor 1 no sheen 09113/02 75 <0 50 1 1 <0 50 <0 50 <5 0 na na na na na na na na 58 86 3672 odor 1 no sheen 12/04/02 <50 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 5234 3020 no odor 1 no sheen 02/17/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5071 2857 no access 06/02/03 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 -050 <0 50 <5 0 <50 84 13 <0 50 5422 -3208 no odor 1 no sheen 09/18103 45000 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 6000 3786 no odor 1 no Sheen 11/24/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5864 3650 not sampled 02/23104 860 <0 50 0 94 <0 50 059 0 72 <0 50 <0 50 <0 50 <5 0 <50 <5 0 16 <0 50 55 04 3290 odor 1 no sheen 06107104 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5554 3340 not sampled 09/07104 5200 69 36 66 370 <0 50 na na na na na na na na 6208 39 94 no odor 1 no sheen 12/10104 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5958 37 44 not sampled 03109!05 690 4 1 15 <0 50 0 67 <0 50 <0 50 <0 50 <0 50 <5 0 <50 6 7 9 9 <0 50 55 54 -3340 odor 1 no sheen 05/24/05 ns ns ns ns ns ns AS ns ns ns ns ns ns ns 5103 -2889 not sampled Notes TPHg=total petroleum hydrocarbons as gasoline TBA=tert butanol GW=groundwater nm=not measured MTBE=methyl tert butyl ether DCA=Dichlorcethane TOC=top of casing na=not analyzed RIPE=dusopropyl ether EDB=dibromoethane <=less than indicated reporting limit ns=not sampled ETBE=ethyl Cert butyl ether ug1L= micrograms per liter=parts per billion(ppb) TAME=tart amyl methyl ether 41Bµnirp5,rs Pmled No 141948 Page 13 of 13 HORIZON ENVIRONMENTAL INC