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Table 4 Historical Groundwater Quality Record Teichert Vernalis Plant Area (all units in mg/L,unless otherwise specified) Total Total Coliform Sampling EC TDS pH Hardness Ca Mg Na K Alkalinity OH CO3 HCO3 SO4 Cl NO3 NO2 P F B Cu Fe Ma Zn Total Fecal Point Date /Cm) as CaCO3 as CaCO3 as OH as CO3 as HCO3 as NO3 as NO2 qLL !) t L) (MPN/100 mL Maximum Contaminant 6.5 to Level' 900* 500* 8.5* - - - - - 250* 250* 45 3 - 2 - 1,000* 300* 50* 5,000* Hall 11119/2003 949 600 7.1 270 72 22 86 2 230 ND ND 280 58 124 12.3 ND --- 0.3 0.5 ND 80 ND ND Absent Hall 2/17/2004 941 550 7.0 256 68 21 85 2 220 <10 <10 270 58 122 17.9 <0.3 --- 0.3 0.4 <10 <50 <10 <20 <1.1 Hall 5/18/2004 936 560 6.9 264 71 21 87 2 230 <10 <10 280 61 HO 17.4 <0.3 --- 0.2 0.5 <10 <50 <10 <20 <1.1 Hall 8/24/2004 934 530 7.1 282 75 23 90 2 230 <10 <10 280 62 112 17.9 <0.3 --- 0.3 0.5 <10 <50 <10 <20 <1.1 --- Hall 12/2/2004 932 580 7.5 275 74 22 88 2 230 <10 <10 280 63 117 18.8 <03 --- 0.3 0.5 <10 <50 <0 <20 <.1 --- Hall 2/23/2005 952 550 7.4 266 72 21 90 2 230 <10 <10 290 62 121 18.6 <0.3 --- 0.2 0.5 <10 <50 <10 <20 <l.l --- Hall 5/11/2005 990 600 7.4 318 88 24 83 2 240 <10 <10 290 100 109 14.8 <0.3 --- 0.2 0.4 <10 <50 <10 <20 <1,1 --- llall 8/30/2005 956 600 7.4 266 72 21 85 2 180 <10 <10 220 65 147 18.2 <0.3 --- 0.2 0.4 <10 <50 <10 <20 <1.1 --- llall 11/15/2005 949 590 7.4 270 72 22 82 2 200 <10 <10 240 63 127 18.4 1.7 --- 0.2 0,5 <10 <50 <10 <20 <1 --- Hall 2/15/2006 946 540 7.4 278 75 22 91 2 220 <10 <0 260 63 120 18.2 1.6 --- 0.2 0.5 <t0 <50 <10 <20 <1.1 --- Hall 5/31/2006 985 560 7.6 292 79 23 89 2 220 <0 <10 260 68 140 19.2 <0.3 0.2 0.5 <10 <50 <10 <20 <1.1 --- Hall 8/21/2006 992 630 7.5 274 75 21 86 2 220 <10 <10 260 67 137 19.0 <0.3 --- 0.2 0.4 <10 <50 <10 <20 <.1 --- Hall 11/14/2006 979 590 7.5 289 78 23 92 2 220 <10 <10 270 64 130 19.3 <0.3 --- 0.2 0.40 <10 <50 <10 <20 <1.1 --- Faulkner 6/1/1994 1,000 680 7.8 360 93 31 97 ND 230 ND ND 280 75 32 25 ND ND ND 0.5 ND 60 ND 70 Absent --- Faulkner 10/411994 1,100 620 7.5 320 86 26 100 ND 240 ND ND 300 66 120 36 ND ND ND 0.5 ND ND ND ND Presene Absene Faulkner 1/1911995 1,000 600 7.4 310 80 25 92 ND 230 ND ND 280 72 130 30 ND ND 0.l 0.5 ND ND ND ND Absent --- Faulkner 4/2611995 1,000 600 7.6 290 79 23 87 ND 220 ND ND 270 74 140 25 ND ND ND 0.4 ND ND ND ND Absent --- Faulkner 7/6/1995 980 600 7.5 280 72 23 88 ND 230 ND ND 280 66 140 24 ND ND ND 0.5 ND ND ND ND Absent --- Faulkner 11/1111995 1,000 600 7.7 310 83 25 92 ND 270 ND ND 320 75 135 29 ND ND ND 0.4 ND ND ND ND Absent --- Faulkner 1/11/1996 1,000 630 7.4 300 83 23 89 ND 280 ND ND 350 64 140 30 ND ND 0.3 0.4 ND ND ND ND Absent_ --- Faulkner 5/211996 990 580 7.4 320 82 29 91 2 230 ND ND 270 80 140 26 ND ND 0.6 0.4 ND 30 ND ND Absent - Faulkner 7/10/1996 990 610 7.5 310 82 26 80 ND 230 ND ND 280 82 140 27 ND ND 0.3 0.4 ND ND ND ND Absent Faulkner 10116/1996 1,000 620 7.3 330 89 26 93 2 240 ND ND 290 75 140 30 ND ND ND ND ND ND ND ND Absent Faulkner 1/2111997 1,000 610 7.6 315 85 25 82 2 220 ND ND 270 75 140 29 ND ND 0.1 0.4 ND ND ND ND Absent --- Faulkner 4191t997 980 590 5.8 330 89 26 88 2 230 ND ND 280 76 140 29 ND ND 0.6 4 ND ND ND ND Absent --- Faulkner 7131t997 950 620 7.4 320 88 25 84 2 220 ND ND 270 77 120 24 ND ND 0.2 0.4 ND ND ND ND Absent --- Faulkner 10/16/1997 980 610 7.5 300 82 23 85 3 210 ND ND 260 79 130 24 ND ND 0.3 0.4 ND ND ND ND Absent --- Faulkner 1/27/1998 960 760 7.5 300 82 23 77 2 230 ND ND 280 76 120 22 ND ND 0.2 0.4 ND ND ND ND Absent --- Faulkner 515!1998 910 550 7.7 290 79 23 80 2 240 ND ND 290 87 93 18 ND ND 0.1 0.4 ND ND ND ND Absent Faulkner 814/1998 920 550 7.5 290 80 23 84 2 240 ND ND 290 93 93 16 ND ND 0.1 0.5 ND ND ND ND Absent --- Faulkner 1114/1998 920 520 7.4 300 81 23 80 2 240 ND ND 290 76 100 13 ND - 0.1 0.3 ND ND ND ND Absent --- Faulkner 2!211999 940 580 7.4 300 84 23 80 2 240 ND ND 300 74 96 15 ND - 0.2 0.4 ND ND ND ND Absent --- Faulkner 5/11/1999 950 580 7 310 85 23 85 2 260 ND ND 320 86 100 20 ND - 0.2 0.4 ND ND ND ND Absent --- Faulkner 8/18/1999 974 580 7.4 307 85 23 83 1 260 ND ND 320 78 99 20.1 ND 0.1 0.4 ND ND ND ND Absent --- Faulkner 11/17/1999 966 580 7.6 319 90 23 78 2 260 ND ND 3t0 81 101 19.5 ND 0.2 0.5 ND 60 ND ND Absent --- Faulkner 2/24/2000 1,000 630 6.9 313 86 24 88 2 240 ND ND 300 83 115 245 ND - 0.2 0.5 ND 120 ND 80 Absent --- 512/2007 -- 512/2007-12;14 PM Page 2 of? ® ® ® ® ® ® ® ® ® ® ® 1� +=