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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 /> MBRMW-4 continued <br /> Total <br /> Date Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate <br /> Sampled pH Bacteria (uS/cm) (mg/L) (mV) TDS(mg/L) ne/L (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 /> (per 100 (mg ) <br /> mL <br /> 2/7/2014 &00 ND 3,007 0.53 281 1,910 80 17 10.0 20 659 0.08 0.17 NA NA NA 0.93 247 NA 659 <br /> 4/25/2014 7.92 ND 3,077 1.08 244 1,960 80 16 9.0 2.0 675 0.09 0.05 NA NA NA 1.08 240 NA 510 <br /> 4/25/2014 7.92 ND 3,077 1.08 244 1,940 80 16 9.0 2.0 686 0.09 0.06 NA NA NA 1.13 240 NA 506 <br /> 8/1/2014 7.89 ND 3,054 0.92 233 1,910 90 18 10.0 2.0 686 ND 0.11 NA NA NA 1.03 241 NA 552 <br /> 11/5/2014 7.90 ND 3,032 0.32 274 1,950 80 17 9.0 2.0 737 0.04 0.20 NA NA NA 1.02 255 NA 560 <br /> 11/5/2014 7.90 ND 3,032 0.32 274 1,930 80 16 9.0 2.0 687 0.04 0.21 NA NA NA 0.82 253 NA 550 <br /> 2/3/2015 8.17 ND 3,005 0.62 243 1,960 80 17 9.0 2.0 664 ND 0.15 NA NA NA 0.81 230 NA 510 <br /> 8/8/2016 8.02 ND 2,933 0.10 117 1,990 70 15 8.0 2.0 662 0.06 0.16 NA NA NA 1.34 229 NA 508 <br /> 11/29/2017 7.93 ND 3,050 0.56 189 1,920 70 14 8.0 1.0 614 ND 0.12 NA NA NA 1.02 202 NA 454 <br /> 5/3/2018 8.25 ND 2,951 0.58 90 1,910 NA NA NA NA 646 NA NA NA NA NA 1.06 200 NA NA <br /> 11/5/2018 7.96 ND 2,933 0.18 198 1,930 70 14 8.0 3.0 836 ND 0.16 NA NA NA 1.00 197 NA 446 <br /> 5/1/2019 7.83 NO 3,002 0.20 179 1,940 NA NA NA NA 715 NA NA NA NA NA 0.99 220 NA NA <br /> 10/31/2019 7.98 ND 2,903 0.24 224 1,980 70 14 8.0 2.0 643 ND 0.02 NA NA NA 1.11 196 NA 444 <br /> 5/8/2020 8.01 NO 2,628 0.13 255 1,940 NA NA NA NA 889 NA NA NA NA NA 0.95 201 NA NA <br /> 11/4/2020 7.94 NA 2,803 0.13 156 1,950 80 16 9.0 2.0 891 0.07 0.19 NA NA NA 0.99 204 NA 435 <br /> 5/7/2021 7.91 NO 2,981 0.77 235 1,950 NA NA NA NA 1470 NA NA NA NA NA 1.11 210 NA NA <br /> 10/19/2021 7.89 ND 3,077 0.53 192 1,990 80 16 9.0 2.0 579 ND 0.15 NA NA NA 1.07 213 NA 431 <br /> 5/2/2022 7.81 ND 2,980 0.85 95 1,940 NA NA NA NA 645 NA NA NA NA NA 1.02 191 NA NA <br /> 11/1/2022 7.93 ND 3,207 0.30 162 1,970 70 15 8.0 2.0 646 ND 0.16 NA NA NA 1.22 261 NA 345 <br /> 4/4/2023 8.04 ND 3,131 0.37 278 1,970 NA NA NA NA 511 NA NA NA NA NA 1.21 250 NA NA <br /> NO is"not detected". <br /> NA is"not analyzed". <br /> EKI Environment&Water,Inc. <br /> July 2023 Page 124 of 281 EKI B90088.03 <br />