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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 Mn Zn Total Fecal _Point Date (RS/cm) as CaCO3 as CaCO3 as OH as CO3 as HCO3 as NO3 as NO2 {µglL) (µSIL) gLi;lL) !p! lL _(MPN/100 mL) Maximum Contaminant 6,510 Level' 900* 500* 8.5* - - - - - - - 250* 250* 45 3 - 2 - 1,000* 300* 50* 5,000* S.Tracy#1' 5/2/1996 800 470 7.4 260 59 28 74 3 170 ND ND 210 130 69 45 ND ND 0.5 1 ND ND ND ND --- S.Tracy#1 7/10/1996 820 $20 7.6 260 62 26 68 2 180 ND ND 210 130 66 47 ND ND 0.2 0.9 ND ND ND ND -- S.Tracy 91 10/16/1996 800 480 7.3 250 61 25 73 3 170 ND ND 210 120 68 46 ND ND 0.2 ND ND 330 ND ND --- --- S,Tracy 01 1/21/1997 790 500 7.8 244 60 23 66 2 160 ND ND 190 110 59 44 ND ND 0.2 1 ND 120 ND ND --- --- S.Tracy#1 4/9/1997 790 500 6.6 250 64 23 72 2 170 ND ND 200 120 73 48 ND ND 0.5 l ND ND ND ND --- --- S.Tracy 41 7/3/1997 790 550 7.3 260 64 24 69 1 170 ND ND 200 130 66 42 ND ND 0.3 l ND ND ND ND --- --- S.Tracy#1 1/27/1998 800 460 7.4 240 60 22 66 2 160 ND ND 190 120 65 41 ND ND 0.3 1 ND 90 ND ND -S.Tracy#1 5/5/1998 800 520 7.6 250 61 23 71 2 160 ND ND 200 120 67 43 ND ND 0.3 1 ND ND ND ND - S,Tracy#1 8/4/1998 800 520 7.8 250 64 23 70 1 I50 ND ND 190 120 68 44 ND ND 0.2 l ND ND ND ND --- --- S.Tracy#t 11/4/1998 810 480 7.5 250 62 23 72 2 160 ND ND 190 120 67 40 ND 0.2 0.9 ND ND ND ND --- --- S.Tracy#1 2/2/1999 800 530 7.3 250 62 23 70 2 MO ND ND 200 110 63 40 ND 0.3 0.9 ND ND ND ND --- --- S.Tracy#1 8/18/1999 804 490 7.7 245 62 22 69 l 160 ND ND 200 114 61 41.3 ND --- 0.4 0.9 ND ND ND ND --- --- S.Tracy#1 11/17/1999 808 470 7.4 253 65 22 64 2 160 ND ND 200 121 64 41.5 ND 0.4 1 ND ND ND ND --- --- S.Tracy#1 9/7/2000 847 530 7.2 248 63 22 78 2 160 ND ND 200 129 66 45.3 ND --- 0.3 0.95 ND ND ND ND --- --- S.Tracy 41 11/28/2000 835 500 7,2 248 63 22 71 2 248 ND ND 200 132 61 40.3 ND 0.1 1.02 ND ND ND ND --- --- S.Tracy 41 2/2l/2001 832 530 7 252 63 23 73 2 170 ND ND 200 144 63 40.5 ND --- 0.2 0.98 ND ND ND ND -- --- S.Tracy#1 5/23/2001 842 530 7 266 67 24 73 2 170 ND ND 210 140 60 37.2 ND --- 0.1 0.99 ND ND ND ND S.Tracy#1 8/28/2001 845 550 7.5 244 63 21 80 2 170 ND ND 210 145 59 37.1 ND --- 0.3 0.91 ND ND ND ND S.Tracy#1 12/11/2001 832 580 7.2 257 65 23 71 2 170 ND ND 210 135 57 36.1 ND --- 0.2 0.94 ND ND ND ND S.Tracy#1 3/12/2002 834 510 7.3 261 65 24 73 2 170 ND ND 210 144 61 35.6 ND --- 0.1 0.93 ND ND ND ND S.Tracy#1 6/19/2002 838 550 7.6 262 67 23 70 2 170 ND ND 210 146 59 34.5 ND --- 0.2 0.95 ND ND ND ND S.Tracy#1 8n12002 836 530 7.3 240 62 22 69 2 170 ND ND 210 132 57 34 ND --- 0.2 0.87 ND ND ND ND S.Tracy#1 10/22/2002 832 540 7.8 259 66 23 73 2 180 ND ND 210 139 58 35.4 ND --- 0.2 0.95 ND ND ND ND S.Tracy 41 1/28/2003 838 540 7.9 266 67 24 71 2 180 ND ND 220 146 59 35.6 ND -- 0.2 1 ND ND ND ND S.Tracy 01 4/29/2003 850 560 7.4 262 67 24 76 2 180 ND ND 210 152 62 36.4 ND --- 0.1 1.01 ND ND ND ND --- S.Tracy#1 8/13/2003 851 560 7.2 259 66 23 72 2 180 ND ND 220 142 57 36.1 ND -- 0.4 0.98 ND ND ND ND --S.Tracy#1 11/19/2003 844 580 6.5 248 68 25 78 2 180 ND ND 220 145 59 24.4 ND --- 0.3 0.9 ND 2,800 30 350 --- --- S.Tracy#1 2/17/2004 837 510 7.3 257 65 23 72 3 170 <10 <10 210 142 61 35.9 <0.3 -- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 5/18/2004 850 530 6.6 278 70 25 76 2 170 <10 <10 210 145 59 35.5 <0.3 --- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 8/24/2004 848 540 6.7 271 69 24 76 2 180 <10 <10 220 148 58 34.5 <0.3 --- 0.4 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 12/2/2004 829 570 7.5 247 56 26 63 2 170 <10 <10 210 128 61 36.0 <0.3 --- 0.6 0.7 <10 4,580 150 50 --- --- S.Tracy#1 2/23/2005 845 550 7.4 259 66 23 75 2 180 <10 <10 220 147 60 34.5 <0.3 --- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 5/11/2005 840 510 7.2 266 67 24 75 2 170 <10 <10 210 144 61 35.7 <0.3 --- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 8/30/2005 842 580 7.4 253 65 22 72 2 170 <10 <10 210 147 69 36.9 <0.3 --- 0.3 0.9 <10 <50 <10 <20 --- S.Tracy#1 11/15/2005 837 590 7.2 250 64 22 72 2 170 <10 <10 210 .146 59 34.3 <0.3 --- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 2/15/2006 833 510 7.2 259 66 23 75 2 170 <10 <10 210 142 58 32.8 0.36 --- 0.3 1.0 <10 <50 <10 <20 --- --- S.Tracy#1 5/31/2006 861 530 7.5 257 65 23 73 2 160 <10 <10 200 146 67 38.7 <0.3 --- 0.3 1.0 <10 <50 <10 30 --- --- S.Tracy#1 8/21/2006 864 530 7.5 245 62 22 72 2 160 <10 <10 190 139 67 39.8 <0.3 --- 0.3 0.9 t0 <50 <10 <20 51212007-12:14 PM Page 4 of 7 © Q © © © © © © E= E-1 ® l© © E