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Appendix C-Historical Water Quality City of Lathrop <br /> Consolidated Treatment Facility <br /> Monitoring and Reporting Program 115-2016-0028-03 Rev3 <br /> M WM-4 continued <br /> Total <br /> Data Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate <br /> 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) <br /> mg/) <br /> mL <br /> 4/24/2014 7.17 110 3,269 3.89 95 1,660 630 165 53 4.0 414 0.17 ND NA NA NA 0.92 520 NA 180 <br /> 8/5/2014 7.06 240 2,281 0.90 171 1,150 460 117 40 3.0 266 0.09 0.02 NA NA NA 0.45 348 NA 111 <br /> 10/30/2014 7.12 23 1,975 3.39 91 1,060 410 105 37 2.0 237 0.07 0.11 NA NA NA 0.54 326 NA 101 <br /> 1/28/2015 7.27 ND 2,190 1.97 181 1,240 460 116 42 3.0 252 NO 0.03 NA NA NA 0.56 350 NA 109 <br /> 10/27/2015 7.15 7.8 2,239 4.54 329 1,280 480 123 43 3.0 271 NO 0.11 NA NA NA 0.60 350 NA 100 <br /> 11/1/2016 7.05 ND 2,430 2.72 51 1,380 560 142 51 3.0 308 NO 0.10 NA NA NA 0.73 352 NA 119 <br /> 11/1/2016 7.05 ND 2,430 2.72 51 1,360 580 144 53 3.0 304 ND 0.13 NA NA NA 0.74 356 NA 120 <br /> 11/27/2017 7.43 22 2,300 5.70 178 1,250 470 116 44 2.0 290 ND 0.04 NA NA NA 0.64 334 NA 119 <br /> 12/1/2017 7.21 48.3 2,276 2.53 164 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 11/7/2018 7.10 ND 2,408 5.38 198 1,340 560 139 51 3.0 250 ND 0.08 NA NA NA 0.76 317 NA 109 <br /> 10/29/2019 7.14 NO 1,920 2.57 219 1,130 430 103 41 4.0 228 NO 0.23 NA NA NA 0.65 271 NA 102 <br /> 10/29/2019 7.14 ND 1,920 2.57 219 1,100 430 105 41 4.0 226 ND 0.24 NA NA NA 0.64 278 NA 100 <br /> 11/2/2020 7.00 NO 1,977 1.44 239 1,130 430 104 41 4.0 209 0.05 0.18 NA NA NA 0.55 262 NA 89.8 <br /> 11/2/2020 7.00 ND 1,977 1.44 239 1,140 430 105 41 4.0 219 0.05 0.17 NA NA NA 0.55 261 NA 90.0 <br /> 10/29/2021 6.98 13 1,828 0.95 266 1,000 380 93 37 3.0 208 0.06 0.12 NA NA NA 0.45 284 NA 86.9 <br /> 10/31/2022 6.98 ND 2,944 1.53 252 1,530 560 140 50 3.0 259 0.04 0.03 NA NA NA 1.26 449 NA 179 <br /> ND is"not detected'. <br /> NA is"not analyzed'. <br /> EKI Environment&Water,Inc. <br /> July 2023 Page 26 of 281 EKI B90088.03 <br />