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Appendix C-Historical Water Quality City of Lathrop
<br /> Consolidated Treatment Facility
<br /> Monitoring and Reporting Program R5-2016-0028-03 Rev3
<br /> CLSP-11
<br /> Total
<br /> Data Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate
<br /> Sampled PH Bact1eria 00 (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 /> mg/)
<br /> mL
<br /> 9/14/2017 7.11 ND 1,894 0.39 102 1,170 390 90 41 2.0 332 NO 0.07 NA NA NA 1.03 191 NA 235
<br /> 11/29/2017 7.29 ND 1,940 0.67 218 1,220 360 82 39 2.0 277 NO 0.06 NA NA NA 0.96 201 NA 223
<br /> 11/29/2017 7.29 ND 1,940 0.67 218 1,190 360 79 40 2.0 276 NO 0.10 NA NA NA 0.96 201 NA 223
<br /> 2/28/2018 7.63 ND 1,986 1.91 126 1,250 370 79 42 2.0 274 NO 0.06 NA NA NA 0.94 203 NA 247
<br /> 6/15/2018 7.09 ND 1,950 0.46 310 1,230 360 77 41 2.0 249 NO 0.20 NA NA NA 0.97 209 NA 235
<br /> 9/7/2018 6.94 ND 2,017 0.65 278 1,260 430 100 45 3.0 268 NO 0.18 NA NA NA 1.05 240 NA 253
<br /> 11/6/2018 6.85 ND 1,949 0.85 298 1,200 430 98 44 2.0 236 ND 0.20 NA NA NA 0.86 217 NA 247
<br /> 1/25/2019 8.20 ND 2,009 0.23 213 1,290 410 88 47 5.0 287 ND 0.05 NA NA NA 1.05 230 NA 259
<br /> 1/25/2019 8.20 ND 2,009 0.23 213 1,300 410 89 46 2.0 290 ND 0.05 NA NA NA 1.05 240 NA 261
<br /> 4/30/2019 7.37 ND 2,150 0.17 233 1,310 420 86 50 2.0 308 ND 0.11 NA NA NA 0.95 250 NA 283
<br /> 8/2/2019 7.03 ND 1,826 0.20 257 1,180 380 78 45 2.0 259 ND 0.32 NA NA NA NO 204 NA 280
<br /> 8/2/2019 7.03 ND 1,826 0.20 257 1,190 360 75 41 2.0 260 ND 0.30 NA NA NA ND 202 NA 274
<br /> 10/30/2019 7.01 ND 1,825 0.23 194 1,180 350 83 34 2.0 282 NO 0.39 NA NA NA 0.89 181 NA 272
<br /> 1/27/2020 7.40 ND 1,790 0.19 292 1,110 260 55 29 2.0 265 NO 0.34 NA NA NA 0.84 181 NA 238
<br /> 5/11/2020 7.44 ND 1,438 0.15 322 1,020 NA NA NA NA 218 NA NA NA NA NA 0.65 149 NA NA
<br /> 8/5/2020 7.21 ND 1,461 0.41 249 950 240 52 28 1.0 189 ND 0.31 NA NA NA 0.56 123 NA 188
<br /> 11/6/2020 7.15 2 1,451 0.25 187 970 290 67 31 2.0 213 NO 0.29 NA NA NA 0.61 140 NA 209
<br /> 1/29/2021 7.20 ND 1,488 1.10 321 990 300 69 30 2.0 203 0.06 0.13 NA NA NA 0.63 144 NA 210
<br /> 1/29/2021 7.20 NO 1,488 1.10 321 960 300 69 30 1.0 196 0.06 0.12 NA NA NA 0.62 137 NA 203
<br /> 5/5/2021 7.17 NO 1,418 2.03 217 930 290 69 29 1.0 189 ND ND NA NA NA 0.55 121 NA 196
<br /> 5/5/2021 7.17 NO 1,418 2.03 217 940 320 75 32 NO 188 NO 0.03 NA NA NA 0.55 124 NA 196
<br /> 8/4/2021 6.97 ND 1,710 0.37 293 1,000 NA NA NA NA 237 NA NA NA NA NA NA 147 NA NA
<br /> 8/4/2021 6.97 NO 1,710 0.37 293 990 NA NA NA NA 237 NA NA NA NA NA NA 147 NA NA
<br /> 10/18/2021 7.30 ND 1,333 0.40 264 1,020 280 63 30 2.0 225 ND 0.13 NA NA NA 0.64 143 NA 215
<br /> 10/18/2021 7.30 NO 1,333 0.40 264 1,010 260 60 28 2.0 212 NO 0.11 NA NA NA 0.62 141 NA 207
<br /> 1/28/2022 7.14 ND 1,753 0.32 284 1,080 NA NA NA NA 247 NA NA NA NA NA NA 155 NA NA
<br /> 5/3/2022 7.13 NO 1,409 1.03 81 890 NA NA NA NA 214 NA NA NA NA NA 0.57 110 NA NA
<br /> 5/3/2022 7.13 ND 1,409 1.03 81 930 NA NA NA NA 208 NA NA NA NA NA 0.57 111 NA NA
<br /> 9/29/2022 6.99 NO 1,370 0.56 221 900 NA NA NA NA 175 NA NA NA NA NA NA 123 NA NA
<br /> 11/4/2022 7.20 2 1,441 0.80 280 840 250 56 26 2.0 187 0.06 0.13 NA NA NA 0.65 106 NA 170
<br /> 2/1/2023 7.23 NO 1,793 0.401 2401 1,080 NA NA NA NA 239 NA NA NA NA NA NA 162 NA NA
<br /> 4/4/2023 7.44 ND 1,809 0.40 330 1,090 NA NA NA NA 241 NA NA NA NA NA 0.79 181 NA NA
<br /> Bold values exceed groundwater limitation.
<br /> NS indicates that well was not sampled during regular quarterly monitoring.
<br /> NO is"not detected".
<br /> NA is"not analyzed".
<br /> City of Lathrop-CLSP-11 City of Lathrop-CLSP-11
<br /> Total Dissolved Solids NO,as Nitrogen
<br /> 5,000 50.0
<br /> 4,000 40.0
<br /> 7aa,3,000 E 30.0
<br /> E z
<br /> 0 2,000 p 20.0
<br /> - z
<br /> 1,000 10.0
<br /> 0 0.0
<br /> Date "Dale
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 9 of 281 EKI B90088.03
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