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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-12 continued
<br /> Total
<br /> Data Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate
<br /> Sample m9d PH Bact1L0000
<br /> (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 /> er
<br /> 8/1/2013 7.85 ND 4,361 0.45 160 2,680 160 21 27 1.0 1,030 NO ND NA NA NA 1.96 1,090 NA 270
<br /> 11/21/2013 7.74 23 4,506 0.50 33 2,590 160 22 26 2.0 982 ND ND NA NA NA 2.15 1,140 NA 270
<br /> 2/5/2014 7.73 ND 4,510 0.66 24 2,570 170 23 28 2.0 960 0.11 ND NA NA NA 2.19 1,010 NA 250
<br /> 4/24/2014 7.70 ND 4,471 1.78 234 2,600 180 24 30 2.0 928 0.11 ND NA NA NA 2.17 980 NA 200
<br /> 8/5/2014 7.65 ND 4,601 2.17 107 2,540 170 23 28 2.0 1,000 0.06 ND NA NA NA 2.12 1,040 NA 190
<br /> 11/3/2014 7.65 ND 4,543 0.90 180 2,600 150 20 24 2.0 957 0.05 ND NA NA NA 2.31 970 NA 229
<br /> 11/3/2014 7.6 NO 4,543 0.9 0 2,6900 '0 20 25 2.0 9fi4 0N05 NDD NAA NAA NA 2.311 900 NAA 221
<br /> 1/29/205 775 ND 4fi6 100 183 20 150 18 2 20 9 D N N N NA 26 0 N 218
<br /> Groundwater Limitations in Groundwater Limitations Compliance Plan,September 30,2015
<br /> 2.2 4,100 33 1 44 16 1 1,179 0.3 1 0.05 1,250 300
<br /> 10/27/2015 7.66 ND 4,450 0.89 119 2,420 160 20 26 1.0 964 ND ND NA NA NA 1.35 980 NA 218
<br /> 4/22/2016 7.60 ND 4,4455 1.32 124 2,560 NA NA NA NA 961 NA NA NA NA NA 3.12 934 NA NA
<br /> Revised Groundwater Limitations in Groundwater Limitations Compliance Plan,August 1,2016
<br /> 2.2 3,762 223 14 1,123 0.3 0.70 1,184 500
<br /> 11/1/2016 7.95 NO 4,483 0.51 35 2,560 150 20 25 2.0 987 NO NO NA NA NA 3.38 948 NA 219
<br /> 5/4/2017 7.fi7 ND 4,535 1.08 106 2,600 NA NA NA NA 975 NA NA NA NA NA 1.78 1,010 NA NA
<br /> 11/27/2017 7.48 ND 6,568 0.68 249 3,670 390 51 65 2.0 1.310 ND 0.02 NA NA NA 2.47 1,680 NA 310
<br /> 5/4/2018 7.09 ND 6,392 1.82 80 3,650 NA NA NA NA 1,810 NA NA NA NA NA 2.41 1,471 NA NA
<br /> 11/7/2018 7.31 ND 6,590 0.89 -62 3,880 500 62 83 4.0 1,400 ND 0.03 NA NA NA 2.42 1,610 NA 330
<br /> 4/29/2019 7.48 ND 5,561 0.51 222 3,100 NA NA NA NA 1,510 NA NA NA NA NA 2.90 1,250 NA NA
<br /> 10/29/2019 7.41 ND 5,763 0.22 50 3,180 330 40 55 7.0 1,070 NO NO NA NA NA 3.02 1,280 NA 294
<br /> 5/6
<br /> /2020 7.39 ND 5,255 0.71 211 2,910 NA NA NA NA 1,080 NA NA NA NA NA 3.01 1,110 NA NA
<br /> 11/2/2020 7.36 ND 5,009 0.32 -102 3,070 360 44 62 1.0 1,060 0.08 NO NA NA NA 2.50 1,150 NA 274
<br /> 5/4/2021 7.50 ND 4,899 0.50 150 2,860 NA NA NA NA 526 NA NA NA NA NA 3.34 1,110 NA NA
<br /> 10/29/2021 7.38 ND 5,271 0.36 218 3,030 300 37 50 2.0 1,000 NO NO NA NA NA 2.24 990 NA 231
<br /> 4/29/2022 7.20 ND 5,1fi3 0.83 82 2,900 NA NA NA NA 947 NA NA NA NA NA 2.40 980 NA NA
<br /> 10/31/2022 7.49 ND 5,444 0.45 -42 2,880 240 30 41 2.0 931 ND ND NA NA NA 3.17 1,200 NA 280
<br /> 3/24/2023 7.58 ND 5,222 0.57 381 2,880 NA NA NA NA 921 NA NA NA NA NA 13'3 1,120 NA NA
<br /> 3/24,2023 7.58 ND ',222 0.57 381 2,870 NA NA NA NA 908 NA NA NA NA NA 3.21 1,140 NA NA
<br /> ND is"not detected".
<br /> NA is not analyzed'
<br /> Concentrations in bold exceed the Groundwater Limitation.
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 50 of 281 EKI B90088.03
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