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Diamond Manteca,CA-November 1993 Groundwater Monitoring Page 6 <br /> a <br /> TABLE 2• Analytical Groundwater Data �� I e 6 f-3 <br /> SRK.MW1 SRK•MW2 SRIK•MW3 BE[-MW4 8E[-MW5 BEFMW6 <br /> 1Hli 3 1a BE MW3 is BE1 MW lift BE1 <br /> December 13 1989 <br /> Volatile Hydrocarbons NI M M 3.600 2,700 37 000 <br /> Benzene NI M NI 100 51 790 <br /> Toluene NI M NI 36 54 1,000 <br /> Eth !benzene NI M M 23 l 7 430 <br /> xylenes M M M 89 72 1,400 <br /> Lead M M NI NS NS NS <br /> October 15,199I <br /> Volatile Hydrocarbons M NI M 1 1,500 59,000 4,200 <br /> Benzene M NI M 86 9,400 550 <br /> Toluene M M NI 14 10,000 <0 5 <br /> i Eth (benzene NI M M 79 1,200 180 <br /> Xylenes M N1 M 140 7,300 360 <br /> Lead M I M M 2 8 9 5 330 <br /> November 24 1991 <br /> Volatile H drocarbons <50iiiiiiit <br /> <SO <50 NS NS NS <br /> Benzene <0 5 16 <0 5 NS NS NS <br /> Toluene <0 5 <0 5 <0 5 NS NS NS <br /> Eth (benzene <0 5 <0 5 <0 5 NS NS NS <br /> Xylenes <0 5 090 <0 5 NS NS NS <br /> Lead IS 350 24 NS NS NS <br /> April 6,1992 <br /> Volatile Hydrocarbons <50 1,800 <0 5 NS NS NS <br /> Benzene <0 5 220 <0 5 NS NS NS <br /> Toluene <0 5 <0 5 <0 5 NS NS NS <br /> Eth lbenzene <0 5 <0$ <0 5 NS NS NS <br /> Xylenes <0 5 120 <0 5 NS NS NS <br /> Lead 26 57 27 NS NS NS <br /> Aumt 31 1992 <br /> Volatile Hydrocarbons X20 t00 <20 3,100 39,000 6,200 <br /> Benzene <0 5 2 <0 5 360 10 000 1 100 <br /> Toluene <0 5 <0 5 <0 5 68 6,100 380 <br /> Eth !benzene <0 5 08 <0 5 62 940 340 <br /> X lenes <0 5 0 6 <0 5 640 7,000 980 <br /> Lead 48 100 14 24 75 310 <br /> Februa S 1993 <br /> Volatile Hydrocarbons <20 30 QO 2,800 40,000 1.500 <br /> Benzene 0 8 <0 3 10 1909 7,660 1607 <br /> Toluene 0 8 <03 12 66 3.025 13 <br /> Eth !benzene 0 6 <0 3 0 9 103 885 476 <br /> X Imes 1 6 <0 3 2 0 6944 9,500 393 <br /> L Lead 3 36 3 1l2 4E 46 <br /> June 1993 <br /> Volatile Hydrocarbons <20 310 290 11 000 35-000 160 <br /> Benzene <0 5 39 40 1,800--- 8,600 <0 5 <br /> Toluene <0 5 1 5 1 5 6 2 4,70 13 <br /> Eth lbenwne <0 5 28 28 520 800 <0 5 <br /> Xylenes <0 5 22 22 2,200 7,100 5 9 <br /> ' Lead 28 30 !8 8 5 <1 <br /> November, 1993 <br /> Volatile Hydrocarbons 30 60 10 4,600 25 000 460 <br /> Benzene <0 5 1 <0 5 630 5500 70 <br /> Toluene 3 4 2 53 990 <0 5 <br /> Eth lbenzene 0 5 l <0 5 Ito <20 It <br /> Xylenes 2 4 1 820 5,500 62 <br /> Lead 17 15 17 1 58 61 320 <br /> NOTES <br /> NI=No sample collected because monitoring well had not yet been installed NS—No sample collected All measurements to ppb <br /> 32304 2256-Q*Mai Steffen Robertson and Kirsten <br />