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Table 4 <br /> Historical Groundwater Quality Record <br /> Teichert Aggregates and Granite Construction-Vernalis Area, San Joaquin County <br /> (all units in mg/L unless otherwise specified) <br /> Total Total Coliform <br /> Sampling EC TDS pll Hardness Ca Mg Na K Alkalinity OH CO3 I1CO3 SO4 CI NO3 NO2 P F B Cu Fe Mn "Ln Total Fecal <br /> Point Date (AS/cm) as CaCO3 as CaCO3 as OH as CO3 as HCO3 as NO3 as NO2 (pg/L) (pg/L) (µg/L) (pg/L) (MPN/100 ml,) <br /> 6.5 to <br /> Maximtun Contaminant Level' 900* 500* 8.5* 250* 250* 45 3 2 1,000* 300* 50* 5,000* <br /> S.Tracy#3 11/26/2007 853 560 8.1 283 72 25 72 2 180 <10 <10 220 158 53 25.0 <0.3 - 0.3 1.0 <10 <50 <10 QO -S.Tracy#3 2/4/2008 848 510 7.7 268 68 24 74 2 190 <10 <10 230 157 53 26.2 <0.3 - 0.1 1.0 <10 <50 <10 QO -S.Tracy#3 5/1/2008 854 550 7.7 271 69 24 74 2 180 <10 <10 220 165 52 21.8 <0.3 - 0.2 0.9 <10 <50 <10 QO -S.Tracy#3 8/26/2008 871 540 6.9 263 66 24 74 2 180 <10 <10 220 159 54 25.1 <O.3 - 0.3 1.0 <10 <50 <10 QO -S.Tracy#3 11/25/2008 867 530 7.9 270 67 25 74 2 180 <10 <10 210 159 56 26.0 <0.3 - 0.2 1.0 <10 50 <10 QO - - <br /> S.Tracy#3 2/10/2009 867 520 8.1 268 66 25 75 2 170 <10 <10 210 151 58 28.4 <0.3 - 0.2 1.0 <10 60 <10 <20 S.Tracy#3 5/5/2009 850 520 8.1 263 66 24 73 2 160 <10 <10 190 148 64 33.8 <O.3 - 0.3 1.0 <10 <50 <10 QO S.Tracy#3 8/4/2009 849 520 8.1 268 68 24 74 2 170 <10 <10 200 146 59 31.9 <0.3 - 0.3 1.0 <10 <50 <10 QO -S.Tracy#3 11/23/2009 850 500 8.0 263 66 24 74 2 180 <10 <10 210 134 56 27.8 <O.3 - 0.3 1.0 <10 <50 <10 QO S.Tracy#3 5/25/2010 850 520 7.4 280 71 25 77 2 170 <10 <10 210 155 58 29.0 <O.3 - 0.3 0.9 <10 <50 <10 QO -S.Tracy#3 11/30/2010 842 540 7.3 280 71 25 73 2 160 <10 <10 200 143 59 30.5 <0.3 - 0.2 1.0 <10 <50 <10 QO -S.Tracy#3 5/23/2011 847 520 7.4 271 69 24 71 2 150 <10 <10 190 147 62 33.2 <0.3 - 0.2 0.9 <10 70 <10 QO S.Tracy#3 11/17/2011 851 500 7.9 283 72 25 81 2 160 <10 <10 200 152 60 31.3 <0.3 - 0.2 I.0 <10 <50 <10 QO S.Tracy#3 5/31/2012 860 520 7.1 280 71 25 77 2 160 <10 <10 200 150 58 27.9 <0.3 - 0.2 0.9 <10 <50 <10 QO -S.Tracy#3 11/20/2012 869 550 7.5 287 74 25 73 2 150 <10 <10 180 150 56 27.5 <0.3 - 0.2 0.9 <10 <50 <10 QO - <br /> S.Tracy#3 5/20/2013 842 520 7.2 273 70 24 76 2 170 <10 <10 200 154 56 26.3 <0.3 - 0.3 0.9 <10 <50 <10 QO - <br /> S.Tracy#3 11/18/2013 842 530 7.1 265 65 25 61 2 160 <10 <10 190 160 69 29.4 <0.3 - 0.2 1.0 <10 <50 <10 QO - <br /> S.Tracy#3 5/14/2014 814 540 7.9 264 68 23 71 2 170 <10 <10 200 156 55 25.2 <0.3 - <0.1 0.9 <10 110 <10 <20 - - <br /> S.Tracy#3 11/12/2014 842 510 7.6 262 67 23 71 2 170 <10 <10 210 159 59 28.5 <0.3 - 0.2 0.9 <10 60 <10 <20 -S.Tracy#3 5/26/2015 860 530 7.6 254 67 21 70 2 170 <10 <10 210 151 55 25.1 <0.7 - 0.2 0.8 <10 <30 <10 <20 - - <br /> S.Tracy#3 11/17/2015 852 520 7.2 246 64 21 67 1 180 <10 <10 210 153 51 22.8 <0.7 - 0.2 0.8 <10 <30 <10 QO - - <br /> S.Tracy#3 5/24/2016 868 550 7.7 264 68 23 74 2 160 <10 <10 190 182 58 22.7 <0.7 - 0.3 0.9 <10 <30 <10 <20 - - <br /> S.Tracy#3 11/8/2016 856 540 6.8 267 69 23 74 2 ISO <10 <10 220 161 53 22.9 <0.7 - 0.2 0.9 <10 50 <10 QO - - <br /> S.Tracy#3 5/23/2017 838 530 7.0 262 67 23 71 2 170 <10 <10 210 156 53 24.1 <0.7 - 0.2 0.9 <10 <30 <10 QO - - <br /> S.Tracy#3 11/20/2017 841 540 9.2 271 69 24 75 2 170 <10 <10 210 152 57 24.9 <0.7 - 0.2 1 <10 100 <10 QO - - <br /> S.Tracy#3 5/21/2018 828 490 6.0 248 63 22 69 4 170 <10 <10 210 146 58 27.5 <0.7 - 0.2 0.9 <10 60 <10 QO - - <br /> S.Tracy#3 11/14/2018 851 540 7.9 278 70 25 66 1 170 <10 <10 210 150 56 25.4 <0.7 - 0.2 0.9 <10 <30 <10 QO - - <br /> S.Tracy#3 5/14/2019 856 530 7.5 281 73 24 74 2 150 <10 <10 180 149 53 24.0 <0.7 - 0.2 1.0 <10 40 <10 QO - - <br /> S.Tracy#3 11/26/2019 841 550 7.9 245 62 22 64 2 170 <10 <10 210 155 56 24.5 <0.7 - 0.2 0.8 <10 <30 <10 <20 - - <br /> S.Tracy#3 5/20/2020 885 530 7.9 268 68 24 74 2 180 <10 <10 220 147 55 24.7 <0.7 - 0.2 0.9 <10 <30 <10 QO - - <br /> S.Tracy#3 11/24/2020 975 530 8.5 248 63 22 65 2 ISO <10 <10 220 154 53 22.3 <0.7 - 0.2 0.9 <10 <30 <10 <20 - - <br /> S.Tracy#3 5/19/2021 842 550 8.2 271 69 24 73 2 180 <10 <10 210 150 56 23.1 <0.7 - 0.2 1.0 30 600 70 QO - - <br /> S.Tracy#3 11/22/2021 844 530 7.8 245 62 22 67 2 170 <10 <10 210 148 56 23.9 <0.7 - 0.2 0.9 <10 40 <10 <20 - - <br /> S.Tracy#3 5/25/2022 877 540 7.6 262 67 23 72 2 180 <10 <10 220 165 51 19.3 <0.3 - 0.2 1.0 <10 70 <10 QO - - <br /> S.Tracy#3 11/15/2022 848 520 7.4 276 71 24 73 2 190 <10 <10 230 172 53 17.4 <0.7 - 0.2 1.0 <10 30 <10 QO - - <br /> S.Tracy#3 5/16/2023 832 510 7.8 273 70 24 75 2 180 <10 <10 220 160 55 22.8 <0.3 - 0.2 0.9 <10 <30 <10 50 - - <br /> S.Tracy#3 11/15/2023 839 570 7.5 259 66 23 72 2 190 <10 <10 230 162 51 19.8 <0.3 - 0.2 0.9 <10 <30 <10 QO - - <br /> S.Tracy#3 5/21/2024 957 540 7.2 250 64 22 67 2 180 <10 <10 220 158 54 21.9 <0.1 - 0.2 0.9 <10 60 <10 QO - - <br /> S.Tracy#3 11/15/2024 853 560 7.9 264 68 23 71 2 180 <10 <10 220 173 52 17.4 <O.1 - 0.2 0.9 10 40 <10 QO - - <br /> Brown's New 6/1/1994 940 570 7.5 290 72 28 87 ND 200 ND ND 240 150 30 8.3 ND ND 0.2 1.3 ND ND ND ND - - <br /> Brown's New 10/4/1994 870 530 7.5 280 68 24 84 ND 190 ND ND 230 160 35 8.1 ND ND 0.1 1.1 ND ND ND ND - - <br /> Brown's New 1/19/1995 860 550 7.5 290 67 25 80 1.5 190 ND ND 230 180 38 8.5 ND ND 0.2 1.1 ND 290 50 ND - - <br /> Brown's New 4/26/1995 930 550 7.5 260 68 23 75 ND 210 ND ND 260 190 35 9.1 ND ND 0.2 1.1 ND ND ND ND - - <br /> Page 7 of 11 <br />