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1 I I I I I 1 I I I i I i I I I I I I 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 Total Coliform Sampling EC TDS pH Hardness Ca Mg Na 6 :Alkalinity OH CO3 HCO3 SO4 Cl NO3 NO2 P F B Cu Fe Mu Z.n Total Feeal Mar Duce (PS/em) as CaCO3 as CaCO3 as OH aaCO3 asHCO3 asNO3 asNO2 Hag/L) ) A) r /n rt) ma Maximum Contaminant 6.5 to Level' 900' 500" 8.5' - - 250' 250' 45 3 2 1000' 300' 50" SODO' Hall 11/19/2003 949 6W 71 270 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 5.50 7.0 256 68 21 85 2 220 '10 <10 270 58 122 179 <0.3 - 0.3 0.4 <10 <50 <10 QO <1.1 - Hall 5/182004 936 560 69 264 71 21 87 2. 230 M <10 280 61 110 17.4 <0.3 - 0.2 0.5 <10 <50 <10 Q0 <.1 - Hall 8/242004 934 530 7.1 282 75 23 90 2 230 Ill <10 280 62 112 17.9 <0.3 - 0.3 0.5 <IO b0 <10 QO <L1 - Hall 12/2/2004 932 580 7.5 275 74 22 88 2 230 -10 <10 280 63 117 18.8 <0.3 - 0.3 0.5 <10 <50 <10 Q0 <1 I - 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 <0 <50 <10 QO <1.1 - Hall 5/11,2005 990 600 74 318. 88 24 83 2 240 <10 <10 290 100 109 14.8 -M.3 --- 0.2 0.4 :10 <50 <10 120 <Ll - Hall 8/30/2005 956 600 74 266 72 21 85 2 180 -10 <10 220 65 147 18.2 10.3 --- 0.2 0.4 -III <50 <0 QO <Ll - Hall 11/152005 949 590 74 270 72 22 82 2 200 -10 X10 240 63 127 18.4 L7 -- (12 0.5 -10 <50 <10 X20 Hall 2/15/2006 946 540 7.4 278 75 22 91 2 22U -1U - 10 260 63 120 18.2 L6 -- 0.2 OS -10 ,:s0 <10 QO <LI - Hall 5/312006 985 560 7.6 292 79 23 89 2 220 '10 -10 260 68 140 19,2 <0.3 -- 0.2 OS 11) 50 <10 Q0 <1.1 - Ilall 821/2006 992 630 75 274 75 2t 86 2 220 <l0 <10 260 67 137 190 <0.3 - 0.2 0.4 10 % <10 Q0 <1.1 - Ha11 II114/2006 979 590 7.5 289 78 23 92 2 220 <ID -.10 270 64 130 193 <0.3 - 02 0.40 10 <50 <10 QO <1.1 - Hall 2/13/2007 972 600 7.6 275 74 22 90 2 220 <II) '110 260 68 137 17/6 <0.3 -- 0.3 0.34 <0 -50 <10 QO <I.1 - liall 5/29/2007 967 600 75 252 68 20 86 2 210 <D -10 260 67 132 191 <0.3 -- <0.1 0.39 <10 70 <10 QO <11 - Ha11 8/14/2007 957 550 6.7 283 77 22 94 2 210 -10 =10 250 68 129 186 <03 -- 0.2 0.49 <0 so <10 QO 4.1 - Hu11 11/26/2007 955 590 7.8 283 77 22 84 2 210 10 - 10 260 fib 132 186 <03 -- U 0.4 <o <50 X10 QO Hall 2/4/2008 952 550 78 278 75 22 89 2 210 10 IO 260 70 134 192 <03 - 0.1 0.4 - 10 50 .-10 Q0 <1.1 <1.1 Hall 5/1/2008 932 550 7.3 269 73 21 86 2 210 '10 -:10 260 71 121 17.2 <0.3 - 0.2 OA IO -50 .JO <20 <Lt <L1 Hall 8/26/2008 865 561) 6.9 268 71 22 88 2 210 <10 '10 250 77 119 19.1 <0.3 - 0.2 05 10 5o .-10 QO 1.1 <L1 Hall 1125/2008 958 530 8.1 270 72 22 87 2 200 <10 <to 25D 74 125 19.2 <0.3 -- 02 0.5 -10 10 <10 QO 'Ll <.I Hall 2/10/2009 954 550 0.1 264 71 21 86 2 200 <10 <IO 250 73 125 19.3 <0.3 - 02 05 <10 <5U <0 QO <I.1 <.I Hall 5/52009 934 570 6.9 269 73 21 87 2 200 <10 <0 250 74 118 19.7 <03 - 0' 0S <10 <50 <10 QO <LI <1.1 Hall 8/4/2009 922 530 79 262 72 20 87 2 200 <to <10 250 76 118 18.5 <0.3 - 0.2 0.5 -10 <50 <10 QO <LI <I.I Hall 11/23/2009 923 510 8.0 266 72 21 88 2 200 <10 <10 250 76 118 19,4 <0.3 - 02 05 -10 <50 <0 QO <11 -11 Hall 5/25/2010 921 530 74 271 74 21 89 2 200 <10 <10 240 74 120 20.9 <0.3 - 0.1 0.4 -10 <50 <10 QO <1.1 4.1 Hall 1IJ30/2010 890 540 7.4 269 73 21 84 2 190 <10 <10 230 73 106 16.9 <0.3 - 0.2 0.4 <0 <50 <10 30 <I.1 <LI 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 10/4/1994 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 Present' Absent' Faulkner 1/19/1995 1,000 600 7.4 310 80 25 92 ND 230 ND ND 280 72 130 30 ND ND 0.1 05 ND ND ND ND Absent - Faulkner 4/26/1995 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 - Faullmer 11/11/1995 1,000 600 7.7 310 83 25 92 ND 27D ND ND 320 75 135 29 ND ND ND 0,4 ND ND ND ND Absent - Faulkner 1/11/1996 1,000 630 74 300 83 23 89 ND 280 ND ND 350 64 140 30 ND ND 03 0,4 ND ND ND ND Absent -- Faulkner' 5/2/1996 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 03 DA ND ND ND ND Absent - Faulkner 10/16/1996 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 W9MI1-10:57 AM Paae 2 0(9