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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 /> Pond S1 <br /> Total <br /> Data 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 m/L Iron(mg/L) Zinc(mg/L) <br /> (per 100 (mg/L) ) ( 9 ) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) <br /> mL <br /> 10/26/2009 9.75 NA 1,735 7.70 77 960 100 24 10 33 338 ND ND NA NA NA 0.19 370 NA 89 <br /> 5/3/2010 10.12 NA 1,526 8.87 126 880 130 32 13 28 291 NO NO NA NA NA 0.11 301 NA 75 <br /> 11/2/2010 8.39 NA 1,580 10.67 99 880 100 25 10 30 306 ND ND NA NA NA 0.16 339 NA 76 <br /> 4/25/2011 9.21 NA 1,264 11.59 49 740 160 40 14 23 217 ND NO NA NA NA 0.15 237 NA 58 <br /> 10/27/2011 9.22 NA 1,426 10.52 332 750 100 24 10 25 226 ND ND NA NA NA 0.24 275 NA 69 <br /> 4/30/2012 9.53 NA 1,237 9.42 175 710 160 43 13 19 196 ND ND NA NA NA 0.17 231 NA 60 <br /> 10/23/2012 9.05 NA 1,663 10.93 -24 950 170 43 15 23 268 ND ND NA NA NA 0.19 286 NA 73 <br /> 5/2/2013 9.39 NA 1,456 11.88 146 830 190 49 17 23 245 ND NO NA NA NA 0.18 291 NA 68 <br /> 11/18/2013 9.62 NA 1,272 13.47 114 760 160 43 14 24 206 ND ND NA NA NA 0.17 248 NA 48 <br /> 4/24/2014 8.98 NA 1,249 8.41 77 740 180 47 15 22 188 0.10 ND NA NA NA 0.20 222 NA 45 <br /> 11/3/2014 8.94 NA 1,467 11.83 178 860 140 36 12 27 232 0.08 ND NA NA NA 0.19 295 NA 67 <br /> 10/27/2015 9.23 NA 1,508 11.26 29 850 140 33 15 28 242 ND ND NA NA NA 0.27 284 NA 81 <br /> 4/25/2016 9.21 NA 1,361 9.94 -10 1,630 140 30 17 22 215 NA NA NA NA NA 0.28 236 NA 84 <br /> 11/1/2016 9.13 NA 1,487 4.93 27 870 130 29 15 27 237 ND ND NA NA NA 0.55 291 NA 100 <br /> 11/27/2017 9.30 NA 1,522 8.77 240 830 130 21 19 25 240 ND ND NA NA NA 0.35 267 NA 98 <br /> 10/29/2019 9.20 NA 1,537 2.88 215 910 140 32 15 35 236 ND ND NA NA NA 0.22 283 NA 73 <br /> NO is"not detected". <br /> NA is"not analyzed". <br /> Pond S1 <br /> Pond S1 <br /> Total Dissolved Solids <br /> NOa+NOt Nitrogen <br /> 5000 <br /> 20 <br /> 4000 <br /> E 15 <br /> 6,3000 z <br /> E 10 <br /> w 2000 <br /> O <br /> 1000 ? 5 <br /> O <br /> 0 = 0 <br /> °m74444444444 . . . .������� 00000°' r°��r'NNNNrvry <br /> Date Date <br /> EKI Environment&Water,Inc. <br /> July 2023 Page 267 of 281 EKI B90088.03 <br />