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Table 4 Historical Groundwater Quality Record Teichert Aggregates and Granite Construction-Vernalis Area, San Joaquin County (all units in mg/L,unless otherwise specified) Total Tmal 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 (a5/cm) as CeCO3 as C9CO3 u OH m CO3 n HCO3 as NO3 as NO2 (WJL) (IWL) lue/LI OM/L) (MPN/100 mLl Maximum Contaminant 65to Level 900• 500• 85• 250" 250• 45 3 2 1000• 300• 50' 5,000- S,Tracy#1 11/4/1998 810 480 7.5 250 62 23 72 2 160 NO NO 190 120 67 40 NO - 0.2 0.9 NO NO NO NO --- -- S.Tracy#1 22/1999 800 530 7.3 250 62 23 70 2 160 NO NO 200 110 63 40 NO --- 0.3 0.9 NO NO NO NO --- S,Tracy#1 --S.Tracy#I 8/18/1999 804 490 7.7 245 62 22 69 1 160 NO NO 200 114 61 413 NO --- 0.4 0.9 NO NO NO NO -- -- S.Tracy#1 11/17/1999 808 470 74 253 65 22 64 2 160 NO NO 200 121 64 41.5 NO - 04 1 NO NO NO NO -- -- S.Tracy#1 92/2000 847 530 72 248 63 22 78 2 160 ND NO 200 129 66 45.3 ND - 0.3 0.95 ND ND ND NO -- - S.Tracy#I 11/28/2000 835 500 72 248 63 22 71 2 248 ND NO 200 132 61 40.3 NO - 0.1 102 ND ND NO ND -- - S.Tracy#1 221/2001 832 530 7 252 63 23 73 2 170 ND NO 200 144 63 40.5 NO - 0.2 0.98 ND ND NO NO - -- S.Tracy#1 5232001 842 530 7 266 67 24 73 2 170 ND NO 210 140 60 37.2 ND - 0.1 0.99 NO ND NO ND -- --- S.Tracy#1 8/28/2001 845 550 7,5 244 63 21 80 2 170 ND NO 210 145 59 37.I ND - 0.3 091 ND ND NO NO -- -- S.Tracy#1 12/112001 832 580 72 257 65 23 71 2 170 NO NO 210 135 57 36.1 ND - 02 0.94 ND ND ND ND -- - S.Tracy#1 3/12/2002 834 510 7.3 261 65 24 73 2 170 ND NO 210 144 61 35.6 NO - 0.1 093 NO NO ND NO -- -- S.Tracy#1 6/19/2002 838 550 7.6 262 67 23 70 2 170 NO NO 210 146 59 34.5 NO - 02 0.95 NO ND NO NO -- -- S.Tracy#1 82/2002 836 530 7.3 240 62 22 69 2 170 ND NO 210 132 57 34 NO - 02 0.87 ND ND NO NO -- - S.Tracy#1 1022/2002 832 540 7.8 259 66 23 73 2 180 ND NO 210 139 58 35.4 NO -- 0.2 0.95 NO ND ND ND -- -- S.Tracy#1 1/28/2003 838 540 79 266 67 24 71 2 180 ND NO 220 146 59 35.6 ND --- 0.2 1 ND NO ND NO - -- S.Tracy#1 4292003 850 560 7.4 262 67 24 76 2 180 NO ND 210 152 62 364 ND - 0.1 1.01 ND NO NO NO -- -- S.Tracy#1 8/132003 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 NO - - S.Tracy#1 11//92003 844 580 6.5 248 68 25 78 2 180 NO NO 220 145 59 24.4 ND - 0.3 0.9 NO 2,800 30 350 -- -- S.Tmcy#1 2/172004 837 510 7.3 257 65 23 72 3 170 <10 <I0. 210 142 61 35.9 10.3 -- 0.3 LO <IO <50 <IO <0 - S.Tracy#1 5/182004 850 530 6.6 278 70 25 76 2 170 <IO <10 210 145 59 35.5 <0.3 - 0.3 LO <10 <50 <10 120 - - S.Tracy#1 8242004 848 540 67 271 69 24 76 2 180 <10 <10 220 148 58 34.5 <03 - 04 LO <10 <50 <10 20 - -- S.Tracy Al 1222004 829 570 75 247 56 26 63 2 170 <10 <10 210 128 61 36.0 <0.3 -- 0.6 0.7 <10 4,580 150 50 -- &Tracy#1 2232005 845 550 7.4 259 66 23 75 2 180 <IO <10 220 147 60 34.5 10.3 --- 0.3 1.0 <10 <50 <10 120 --- S.Tracy#1 5/112005 840 510 7.2 266 67 24 75 2 170 <10 <IO 210 144 61 35.7 <0.3 - 0.3 10 <10 <50 110 <20 --- -- S.Tracy#1 8/302005 842 580 74 253 65 22 72 2 170 <10 <10 210 147 69 36.9 <0.3 -- 0.3 0.9 <10 <50 <10 120 - --- S.Tracy#1 11/152005 837 590 7.2 250 64 22 72 2 170 <10 <IO 210 146 59 34.3 <0.3 -- 0.3 1.0 <10 <50 <10 <0 --- S'Tracy#1 --S.Tracy#1 2/152006 833 510 7.2 259 66 23 75 2 170 <IO <10 210 142 58 32.8 0.36 - 0.3 10 <10 <50 <10 <0 --- S.Tracy#1 5/312006 861 530 7.5 257 65 23 73 2 160 <10 <10 200 146 67 38.7 <03 - 0.3 LO <10 <50 <10 30 --- S.Tracy#1 8212006 864 530 7.5 245 62 22 72 2 160 <10 <IO 190 139 67 39.8 <0.3 -- 0.3 0.9 10 <50 <10 <0 --- -- S.Tracy#) 11/142006 849 540 7.5 262 67 23 75 2 170 <10 <10 210 143 58 332 10.3 - 0.3 0,89 <10 <50 <10 <0 --- -- S.Tracy#1 2/132007 850 570 7.5 253 65 22 76 2 170 <10 <IO 210 149 60 29.4 <0.3 - 0.3 0.83 <10 <50 <10 <0 --- S.Tracy#1 5292007 949 530 7.5 262 67 23 78 2 160 <10 <10 200 141 65 36.8 <0.3 - 0.3 1.05 <10 <50 110 <0 --- S'Tracy#1 8/14/2007 851 540 6.9 271 69 24 80 2 180 <10 <10 210 149 56 31.3 <0.3 - 0.3 1.01 <10 <50 <10 <0 --- S.Tracy#: 1126/2007 839 560 8,0 259 66 23 72 2 170 <I0 <10 210 148 60 32.1 <0.3 -- 0.1 1.0 <10 <50 <I0 <0 --- -- S.Tracy#1 2/4/2008 837 490 7.8 254 64 23 75 2 170 <10 <10 210 144 60 34.2 <0.3 --- 0.2 10 <10 70 <10 120 - -- S.Tracy#1 5/1/2008 848 540 7.7 262 67 23 76 2 170 <10 <10 200 154 60 310 <0.3 -- 0.2 0.9 <10 70 <10 120 -- --- S.Tracy#1 8/26/2008 861 530 6.9 263 66 24 78 2 170 <10 <10 200 144 58 32.2 <03 -- 0.2 L0 <10 <50 <10 <0 --- S.Tracy 41 11/252008 850 500 7.8 252 63 23 75 2 160 <10 <10 200 148 61 31.9 <0.3 --- 0.3 10 110 50 <10 <0 --- -- S.Tracy#1 2/102009 844 520 8.2 243 61 22 75 2 160 <10 <10 190 144 61 290 <0.3 - 02 LO <10 140 <10 20 --- S.Tracy#1 5/5/2009 856 520 8.2 245 62 22 80 2 130 <I0 <10 160 158 77 32.0 <0.3 - 0.3 1.0 <10 90 <10 20 --S.Tracy#1 8/4/2009 848 510 8.2 254 64 23 76 2 150 <10 <10 180 140 67 374 <0.3 -- 0.4 LO 110 <50 <10 <0 -- -- 3l 192015 Pegc 5 of 9