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0 a 2 of 3 <br /> Table 2 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#595 <br /> 6100 N Highway 99,Stockton,CA <br /> Well Depth Groundwater Groundwater Ethyl- Xylenes MtBE MtBE <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (EPA 8020) (EPA 8260) DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> MW-4 3/5/01 P 5917 -2540 -058 5,250 738 <20 0 335 <20 0 1,870 1,760 42 <br /> (cont) 5/8/01 P 5984 -2607 -067 2,890 875 <20 0 344 <20 0 2,350 2,140 050 <br /> 8/1101 P 61 83 -2806 199 750 19 <2 5 6 6 <25 640 1,400 000 <br /> 10/23/01 - -------------------------------------------Dry Well------------------------------------------ <br /> 2/1/02 P 61 58 -2781 -- <500 <5 0 <5 0 <5 0 <5 0 770 690 028 <br /> 4/11/02 P 6214 -2837 -056 280* 17 <0 50 <0 50 <0 50 54 670 0 71 <br /> 7116,17102 P 6251 -2874 -037 Insufficient Amount of Water to Sample Well 2 2 <br /> MW-5 811/01 P 3225 60 52 -2827 -- <50 <0 50 <0 50 <0 50 <0 50 <25 2 6 3 51 <br /> 10/23/01 P 61 86 -2961 -134 <50 <0 50 <0 50 <0 50 <0 50 <25 <1 0 0 98 <br /> 211102 P 6093 -2868 0 93 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 089 <br /> 4/11/02 P -- -- -- -----------------------------------------Not Accessible----------------------------------------- <br /> 7116/02 P 6228 -3003 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 2 3 2 <br /> MW-6 811101 P 3020 58 60 -2840 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 <2 0 364 <br /> 10/23/01 P 5977 -2957 -1 17 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <1 0 1 62 <br /> 2/1/02 P 58 38 -2818 1 39 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 0 94 <br /> 4/11/02 P 58 44 -2824 -006 <50 <0 50 065 <0 50 <0 50 <2 5 <0 50 2 59 <br /> 711&102 P 6023 -3003 -179 <50 087 3 0 <0 50 18 4 6 16 — <br /> MW-7 8/1/01 P 3252 6057 -2805 -- <50 <0 50 <0 50 <0 50 <0 50 61 94 107 <br /> 10/23/01 P 61 94 -2942 -137 <50 <0 50 <0 50 <0 50 <0 50 110 100 023 <br /> 211/02 P 6104 -28 52 0 90 <50 <0 50 <0 50 <0 50 <0 50 100 85 015 <br /> 4111/02 P 60 87 -2835 017 <50 <0 50 1 3 <0 50 0 89 58 56 092 <br /> 7116,17102 P 6242 -2990 -155 57* <0 50 18 <0 50 19 96 87 3 0 <br /> MW-8 7116/02 P 3310 6327 -3017 — <50 <0 50 081 <0 50 <0 50 18 15 — <br /> MW-9 7116/02 P 3372 6355 -2983 — <50 <0 50 <0 50 <0 50 <0 50 <2 5 093 3 4 <br /> MW-10 7/16/02 P 3127 6116 -2989 — <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 2 8 <br /> DMW-1 7116,17102 P 3430 6443 -3013 — <50 <0 50 2 6 0 51 2 8 3 8 2 3 2 7 <br /> DMW-2 7/16,17102 P 3362 7315 -3953 — <50 <0 50 2 2 <0 50 2 8 17 12 25 <br /> ProlectslARC015951ReportslTableslgwtables595 <br />