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Appendix C-Historical Water Quality City of Lathrop Consolidated Treatment Facility Monitoring and Reporting Program R5-2016-0028-03 Rev3 MWM-22 Total Data Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate Sampled PH Bact1eria 00 (uS/cm) (mg/L) (mV) TDS(mg/L) nesL (mg/L) (mg/L) (mg/L) (mg/L) Iron(mg/L) (mg/L) (mg/L) (mg/L) Zinc(mg/L) (mg/L) (mg/L) (mg/L) (mg/L) mg/) mL 2/27/2001 7.64 NA 1,450 -- -- 899 NA 145 40 5.0 131 0.070 1.6 NA NA 2.04 NA 199 NA 185 9/27/2004 7.09 NA NA -- -- 1.000 NA 150 NA ND 140 ND 1.3 ND NA ND NA NA ND 190 5/25/2005 7.35 11 1,200 - - 890 NA 126 39 ND 131 ND 0.90 0.33 ND 0.0453 ND 180 ND 160 6/27/2005 7.59 300 1,300 - - 860 NA 130 37 ND 120 0.069 0.86 0.59 ND ND ND 190 ND 160 11/4/2005 7.11 ND 1,521 0.08 136 920 470 130 41 1.8 140 NO 1.5 0.100 0.0051 ND 0.60 190 0.18 180 2/9/2006 7.18 50 1,489 0.21 167 490 220 53 22 1.0 76 ND 0.007 0.028 0.0026 ND 0.24 73 0.41 73 5/1/2006 6.69 ND 1,467 0.06 125 900 550 150 43 1.7 150 ND 1.5 0.16 0.0080 ND 0.66 190 0.14 180 7/31/2006 6.57 800 1,326 0.09 128 940 400 100 34 1.5 120 ND 1.1 0.16 0.0010 0.0026 0.55 180 0.14 160 10/23/2006 6.40 13 1,359 0.25 166 900 440 110 37 2.6 140 NO 0.84 0.18 0.0024 0.0058 0.63 190 0.23 170 1/31/2007 6.85 ND 1,437 0.27 150 820 460 120 38 1.7 140 NO 0.56 0.13 0.0010 ND 0.59 190 0.15 180 5/1/2007 7.08 NO 1,464 0.21 174 880 470 120 38 1.8 130 ND 0.73 0.12 0.0010 ND 0.63 200 0.15 190 7/30/2007 7.05 4 1,489 1.27 67 1,200 480 130 39 1.4 130 ND 0.80 0.16 0.0010 ND 0.65 200 0.17 190 7/30/2007 7.05 8 1,489 1.27 67 1,100 480 130 39 1.5 140 NO 1.1 0.15 0.0011 ND 0.65 220 0.16 210 11/7/2007 7.30 ND 1,377 0.24 34 910 440 110 38 1.8 140 ND 0.97 0.19 0.0011 ND 0.56 180 0.20 170 2/4/2008 7.00 4 1,503 2.40 101 970 500 130 42 1.5 130 NO 0.08 0.16 0.0025 0.0032 0.59 200 0.18 190 4/28/2008 7.10 ND 1,660 0.23 166 1,100 520 140 41 1.7 140 NO 1.1 0.13 0.0023 0.0027 0.64 220 0.18 200 8/18/2008 7.10 23 1,652 0.31 129 980 520 140 42 1.5 140 NO 1.4 NA NA NA 0.55 190 NA 180 11/25/2008 7.10 2 1,476 1.31 34 960 490 130 40 2.3 140 ND 1.3 NA NA NA 0.58 180 NA 160 2/11/2009 7.13 11 1,412 0.36 86 810 420 110 36 1.7 130 NO 0.16 NA NA NA 0.52 170 NA 160 4/13/2009 7.18 2 1,447 0.42 148 850 420 110 35 1.2 130 NO 0.22 NA NA NA 0.50 170 NA 150 7/28/2009 8.15 4 1,356 0.41 81 840 430 116 35 2.0 136 NO 0.67 NA NA NA 0.44 174 NA 153 10/20/2009 7.70 ND 1,271 0.80 52 790 390 105 32 2.0 133 0.05 0.99 NA NA NA 0.35 154 NA 140 1/26/2010 8.09 NO 1,199 0.64 29 810 390 103 32 1.0 124 NO 0.35 NA NA NA 0.21 150 NA 135 5/4/2010 7.32 ND 1,038 0.23 79 750 380 99 33 1.0 131 NO 0.05 NA NA NA 0.30 154 NA 137 8/25/2010 7.21 ND 1,293 0.40 329 850 430 114 35 2.0 134 0.18 1.0 NA NA NA 0.41 183 NA 158 8/25/2010 7.21 ND 1,293 0.40 329 820 430 114 35 2.0 135 0.21 1.0 NA NA NA 0.42 182 NA 157 10/21/2010 7.11 ND 1,400 0.62 376 850 460 122 37 2.0 149 0.08 1.4 NA NA NA 0.44 185 NA 164 1/26/2011 7.27 ND 1,333 0.35 337 840 430 111 36 2.0 130 ND 1.3 NA NA NA 0.45 194 NA 162 4/25/2011 7.15 ND 1,377 0.12 292 850 440 118 36 2.0 133 ND 1.3 NA NA NA 0.49 187 NA 171 8/17/2011 7.01 ND 1,473 2.81 370 860 470 124 38 2.0 152 0.05 1.3 NA NA NA 0.46 196 NA 176 10/26/2011 7.24 ND 1,475 0.36 349 850 450 119 36 2.0 143 ND 1.1 NA NA NA 0.58 184 NA 176 1/24/2012 7.14 ND 1,479 0.29 186 860 430 116 34 2.0 142 ND 0.92 NA NA NA 0.45 185 NA 170 5/1/2012 7.23 ND 1,443 1.25 94 870 430 116 35 2.0 134 1.02 1.4 NA NA NA 0.46 196 NA 179 7/26/2012 7.16 ND 1,392 0.93 -9 850 420 110 35 2.0 137 ND 1.0 NA NA NA 0.39 172 NA 156 10/24/2012 7.16 23 1,541 0.74 134 960 450 119 38 2.0 156 ND 0.66 NA NA NA 0.51 198 NA 178 1/30/2013 7.37 30 1,456 0.28 227 900 430 114 36 2.0 147 ND 1.1 NA NA NA 0.42 189 NA 173 4/29/2013 7.28 4 1,352 0.35 321 810 400 106 33 2.0 139 ND 0.89 NA NA NA 0.44 184 NA 166 7/31/2013 7.43 fi.1 1,358 0.fi5 281 830 400 107 33 1.0 134 ND 1.3 NA NA NA 0.41 168 NA 160 NO is"not detected". NA is"not analyzed". Formerly monitoring well TMW-5. City of Lathrop-MWM-22 City of Lathrop-MWM-22 Total Dissolved Solids NOs+NOz Nitrogen 5,000 20 4,000 �15 w 3,000 E E C 10 c 2,000 r 1,000 z 5 0 0 o S o Date Date EKI Environment&Water,Inc. July 2023 Page 87 of 281 EKI B90088.03