ARCHIVED REPORTS_XR0008597 - Laserfiche WebLink

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T� 1 • GROUNDWATER MONITORING DATA Former Beacon Station No 12419 2350 Waterloo Road, Stockton, California ethyl- Depth to TOC GW Well TPHg benzene toluene benzene xylenes MTBE DIPS ETBE TAME TBA methanol ethanol DCA FDB GW Elevation Elevation Number Date (ug/L) (uglL) (ug1L) (uglL) (uglL) (ug/L) (ug1L) (ug1L) (ug1L) (ug/Q (uglL) (uglL) (u 1L) (ug/L) (feet) (feet sea level) (feet sea level) Comments AS-2 10/20/00 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 530 2800 <50 na na na na na na na na 4598 2522 slight odor 1 no sheen interval 03/27/01 11000 91 820 230 1800 <20 na na na na na na na na 4661 -2575 slight odor 1 no sheen 123'128 06/26/01 12000 80 fib 220 2000 <2 5 <2 5 <2 5 <2 5 <25 <250 <50 <2 5 50 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 3253 slight odor 1 no sheen 11130/01 6600 70 15 110 740 <25 na na na na na na na na 5415 3339 odor/no sheen 02127/02 3200 46 98 28 280 <10 na na na na na na na na 5083 -3007 odorino sheen 05/16102 3500 40 10 74 410 <2 0 <2 0 <2 0 <2 0 <20 <200 180 <2 0 <2 0 51 10 2232 2878 odorino sheen 09113/02 3400 120 110 89 480 <10 na na na na na na na na 5937 37 05 odor 1 no sheen 12/04/02 1400 40 12 11 110 <5 0 na na na na na na na na 5839 -3607 n0 odor 1 no sheen 02/17/03 420 16 49 28 43 <0 50 na na na na na na na na 5408 -3176 no odor I no sheen 06103/03 450 27 1 2 32 90 <0 50 <0 50 <0 50 <0 50 <50 <50 58 <0 50 <0 50 5398 3164 no odor!no sheen 09/18103 3800 16 094 12 66 <5 0 na na na na na na na na 6031 3799 no odor 1 no sheen 11/24/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 58 80 3648 not sampled AS 3 10120/00 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 61000 < � 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 23 58 <0 50 <0 50 <5 0 na na na na na na na na 4682 2622 no odor 1 no sheen 80-85 06/26/01 <50 <0 50 052 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 12 <50 690 89 <0 50 4896 2836 no odor 1 no sheen 09/05101 100 <0 50 <0 50 <0 50 1 8 <5 0 na na na na na na na na 5411 -3351 odor/no sheen 11!30101 74 1 3 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 5393 3333 odor/no sheen 02/27/02 73 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 5067 -3007 no odor 1 no sheen 05116/02 <50 <0 50 1 8 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 47 94 <0 50 5097 2214 2883 no odor 1 no sheen 09113102 75 <0 50 1 1 <0 50 <0 50 <50 na na na na na na na na 5886 -3672 odor I n0 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 06102/03 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 84 13 <0 50 5422 3208 no odor 1 no sheen 09116!03 45000 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 6000 -3786 no odor!no sheen 11/24/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5864 3650 not sampled I Notes TPHg=total petroleum hydrocarbons as gasoline TBA=tert-butanol GW=groundwater nm=not measured MTBE=methyl tert-butyl ether DCA=Dichloroethane TOC=top of casing na=not analyzed DIPS=dnsopropyl ether EDB=dibromoethane <=less than indicated reporting limit ns=not sampled ETBE=ethyl-tert butyl ether pg1L= micrograms per liter=parts per billion(ppb) TAME=tert amyl-methyl ether I Y„�mrJ3As Page 13 of 13 HORIZON ENVIRONMENTAL I=