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Table <br /> Summary of Ground Water Monitoring and Analyses <br /> Fomner Mobil Oil Bulk Plant 04-343 <br /> 500 East Grantline Road <br /> Tracy,California <br /> Wed Date of Casing Depth to Ground TPH-G TPH-D Benzene Toluena Ethyl- Total Fecal Lead Phenol Diethyl 2-HEX Lab <br /> ID Sampling Elevation Water Elevation Water <br /> (ppb) (ppb) (ppb) (ppb) benzene xylenes coloform (ppb) (ppb) Phthalate (ppb) <br /> (fest) (fit) feet (ppb) (ppb) (Ppb) (ppb) <br /> AW-2 04102/93 11.06 22.12 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - - SEQ <br /> (coni) os/27/93 11.15 22.03 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - <br /> 10)'28/93 11.52 21.66 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<Q.5 - - SEQ <br /> 01121/94 11.44 21.74 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 N0<0.5 - - -_ - SEQ <br /> - -- SEQ <br /> AW-3 101b2/90 32.62 11.42 21.20 4,200 10,000 0.5 3.5 4.9 21 ND<2.2 ND<10 <br /> 11121/90 - _ _ - - AI=L <br /> 02N6191 - - - - ND<2 - - Pace <br /> 11.73 20.89 ND<300 9,800 NN2.5 ND<2.5 ND<2.5 ND<5.0 ND-c2 ND<500 -- AEL <br /> SAL <br /> 05107/91 3218 11.14 21.04 210ND<50 ND<0.3 ND<0.3 0.3 0.8 ND<2 <br /> 08x21/91 11.05 21.13 620"' 22,000 ND<0.60 ND<0.60 ND<0.60 0.70 <br /> 11/28/91 11.67 20.51 610 2,600 NQ<0.30 NDc0.30 ND<D.30 0,48 - -_ - SEQ <br /> 02121/92 11.37 20.81 ND<30 ND<50 ND<0.30 ND<0.30 ND<0.30 ND<0.30 - SEQ <br /> 04/07/92 32.68 11.63 21.05 ND<30 75 ND<0.30 NDc0.30 NDc0.30 0,48 - SEQ <br /> 04/24/92 11.82 21.06 120" 1,400 ND<0.30 ND<0.30 ND<0.30 ND<0.30 i SEQ <br /> 4 SEQ <br /> 07121/92 11.67 21.01 ND<50 870 ND<0.5 ND<0.5 ND<0.5 ND<0.5 � W. � - <br /> i <br /> 10121/92 11.73 20.95 85 880 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - - SEQ <br /> 01122/93 i11.01 _ <br /> i 21.87 ND<50 320 ND<0.5 NDN.5 ND<0.5 ND<0.5 - - SEQ <br /> 04!02193 11.34 21.34 ND<50 120 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - NDQ 0 NDaO ND<5.0 SEQ <br /> 05127/93 11.39 21.29 ND<50 210 NDc0.5 NDc0.5 ND<0.5 ND<0.5 - - _ SM <br /> 10/28/93 10.70 21.98 ND<50 91 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - _ S� <br /> 01121!94 11.69 20.99 ND<50 51 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -` SEQ <br /> SEQ <br /> AW-4 10102/90 32,67 10,99 21.68 140<50 ND<50 ND<0.3 ND<0.3 ND<0.3 ND<0.3 - ND-00 10.86 21.81 ND<50 ND<2W ND<0.5 ND<0.6 ND<0.5 ND<0.5 - - - - AEL <br /> 051b7/91 32.76 10.54 22.22 ND-c50 ND<50 ND<o.3 ND<0.3 ND<0.3 ND<0.3 - ND< _ - AAL <br /> 08!21/91 10.60 22.16 ND<30 ND<50 ND<0.30 ND<0.30 ND<0.30 ND<0.30 - � SAL <br /> 11126/91 11.14 21.62 ND<30 100 ND<0.30 ND<0.30 ND<0.30 ND<0.30 ,.. - - - SEQ <br /> -"' - - - - SEQ <br /> NOTES: ppb = pans per billion( <br /> TP}i-G total petroleum hydrocarbons <br /> Top of Casing elevations were surveyed In ref wax a ID a raltoad spike set in an <br /> carbons as gasoline TOP <br /> on the approximate oenterline of Fast Grantline Road 19.5 least west from the <br /> TPH-D . totai petroleum hydrocarbons as desel centerline of the ralkoad spur tracks. <br /> ND = not detaoled at delectioon limns Stated in OffIC l laWrabry mportS All wells FIGSUNOYed on <br /> not measurednotanalyze&notapplkabla 1992,data reflect April7,19W,elle atlon&ndlmprovernantServioes,Aprii7and24. <br /> 2 i-IEX a 2-f�1axon-1-ol(E) resurveyed e19V8tI0dIS <br /> = sample reported as not matching hvk W gasoline pattam <br /> AEL = sampled reported as not appearfng to contain gasoline <br /> Amerkan Environmental Laboratories,Inc. <br /> SAL = Supertor Analytical Labomforles,Inc. <br /> SEQ = Sequola Analytical <br /> Page 2 of 6 30-13BOW TAME navz4 <br />