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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 /> MWR-4 <br /> Total <br /> Date BacColtrm EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate <br /> S e <br /> ampled 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 /> 1/25/1999 6.55 NA 2,210 — -- 1,540 506 108 57.2 7.09 239 104 11.3 0.795 0.107 0.0909 NA 519 ND 12.4 <br /> 4/13/1999 6.49 NA 590 — — 1,250 483 104 54 4.79 227 16.5 10.3 NA NA NA NA 12 NA 470 <br /> 7/1/1999 6.26 NA 1,900 — — NA NA NA NA NA NA NA NA 0.16 NA 0.011 NA 374 NA NA <br /> 10/1/1999 6.34 NA 2,040 — — NA NA NA NA NA NA NA NA 0.558 NA 0.0351 NA 454 NA NA <br /> 1/1/2000 6.4 NA 2,040 -- -- NA NA NA NA NA NA NA NA 0.919 0.0461 0.083 NA 459 NA NA <br /> 5/21/2001 NA NA NA -- -- NA NA NA NA NA NA NA NA 0.168 0.00555 0.00384 NA NA NA NA <br /> 5/29/2001 NA NA NA — — NA NA NA NA NA NA NA NA 0.172 0.00546 0.00735 NA NA NA NA <br /> 9/27/2004 NA NA NA — — NA NA 149 76 4.78 312 11.9 16 0.23 NA 0.00659 NA NA NA NA <br /> 2242101 NA 230 NA 30 66 280 20 13 0 ND ND 21 310 ND 230 <br /> 20 23 3 0.4 30 69 .5 ND ND . 610 0.29800 , <br /> /31/25 6.51 ND 2,00 10 1 4 220 <br /> ND is"not detected". <br /> NA is"not analyzed". <br /> River Islands-M WR-4 River Islands-MWR-4 <br /> Total Dissolved Solids NOs+NOz Nitrogen <br /> 5,000 100 <br /> ..4,000 E 80 <br /> E 3,000 Z 60 <br /> rn 2,000 p 40 <br /> 1,000 20 <br /> 0 Z 0in I c�v Main <br /> ..... Date Data <br /> EKI Environment&Water,Inc. <br /> July 2023 Page 191 of 281 EKI B90088.03 <br />