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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 /> RM W-5 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) mess (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/L) <br /> mL <br /> 11/22/2013 7.40 ND 896 3.91 201 540 310 81 25 5.0 72.5 ND ND NA NA NA 0.15 45 NA 43.0 <br /> 2/7/2014 7.35 NO 938 3.73 269 570 310 83 25 4.0 71 0.07 ND NA NA NA 0.16 44 NA 42.0 <br /> 4/28/2014 7.30 ND 916 4.21 251 570 290 77 24 4.0 66 0.06 ND NA NA NA 0.20 44 NA 37.4 <br /> 8/1/2014 7.19 NO 919 3.97 285 590 320 84 26 4.0 76 0.05 ND NA NA NA 0.20 46 NA 40.2 <br /> 11/3/2014 7.21 ND 935 3.93 277 600 300 79 25 4.0 71 0.06 ND NA NA NA 0.17 50 NA 38.0 <br /> 1/30/2015 7.39 ND 904 3.56 241 570 300 77 25 4.0 70 ND ND NA NA NA 0.10 46 NA 39.0 <br /> 1/30/2015 7.39 ND 904 3.56 241 590 300 79 25 4.0 70 ND ND NA NA NA 0.08 45 NA 38.0 <br /> 10/28/2015 7.27 NO 950 3.40 78 580 290 76 24 4.0 70 NO ND NA NA NA ND 51 NA 41.0 <br /> 10/31/2016 7.58 7.8" 961 3.04 148 620 310 83 26 4.0 75 ND ND NA NA NA 0.19 54 NA 45.1 <br /> 11/30/2017 6.84 ND 690 4.33 218 460 260 69 21 4.0 60 ND ND NA NA NA 0.12 38 NA 36.4 <br /> 11/8/2018 7.24 ND 735 4.68 298 440 260 68 22 4.0 63 ND 0.02 NA NA NA 0.11 31 NA 29.8 <br /> 10/29/2019 7.34 ND 783 2.85 217 490 250 66 21 4.0 60 ND ND NA NA NA 0.03 36 NA 36.0 <br /> 11/2/2020 7.34 ND 618 4.20 351 440 220 58 19 4.0 46 0.05 ND NA NA NA 0.10 25 NA 26.2 <br /> 10/29/2021 7.22 ND 840 3.42 269 540 280 73 24 4.0 68 ND ND NA NA NA 0.14 42 NA 29.7 <br /> 10/29/2021 7.22 ND 840 3.42 269 530 270 70 23 4.0 65 ND ND NA NA NA 0.14 43 NA 32.6 <br /> 10/31/2022 7.35 2.0 877 2.72 210 550 230 59 20 3.0 80 ND ND NA NA NA 0.16 42 NA 35.4 <br /> "Coliform was resampled on 11/11/2016 due to lab error on the original sample. <br /> ND is"not detected". <br /> NA is"not analyzed". <br /> EKI Environment&Water,Inc. <br /> July 2023 Page 180 of 281 EKI B90088.03 <br />