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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-12
<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 /> 9/18/2017 8.59 170 5,580 0.10 79 3,410 30 2 6 4.0 1,330 NO 0.02 NA NA NA 3.21 1,010 NA 260
<br /> 11/29/2017 8.94 ND 5,782 0.29 211 3,550 30 3 6 3.0 1,300 ND 0.01 NA NA NA 3.19 1,130 NA 260
<br /> 2/28/2018 9.05 NO 5,626 1.70 129 3,420 30 2 5 3.0 1,480 ND NO NA NA NA 3.04 1,010 NA 251
<br /> 6/15/2018 8.48 ND 6,070 0.09 297 3,640 30 2 5 2.0 1,660 ND ND NA NA NA 3.58 1,160 NA 295
<br /> 9/7/2018 8.74 NA 4,020 0.38 115 2,590 20 2 3 4.0 1,010 ND NO NA NA NA 2.13 750 NA 215
<br /> 9/7/2018 8.74 NA 4,020 0.38 115 2,420 10 1 3 2.0 1,010 ND ND NA NA NA 1.98 700 NA 204
<br /> 11/6/2018 8.56 17 4,386 0.20 109 2,690 20 2 3 2.0 1,060 NO NO NA NA NA 2.49 860 NA 247
<br /> 11/6/2018 8.56 17 4,386 0.20 109 2,770 20 2 4 2.0 1,130 NO 0.01 NA NA NA 2.52 880 NA 245
<br /> 1/25/2019 9.60 NO 3,357 0.30 181 1,960 10 ND 2 4.0 743 NO NO NA NA NA 1.33 470 NA 146
<br /> 4/30/2019 8.95 NO 3,096 0.18 177 1,880 10 1 2 ND 828 NO ND NA NA NA 0.82 330 NA 106
<br /> 8/2/2019 8.95 ND 2,563 0.22 217 1,610 10 1 2 1.0 576 0.18 0.03 NA NA NA ND 194 NA 73
<br /> 10/30/2019 8.55 ND 4,620 0.26 194 2,910 20 3 4 3.0 1,050 ND 0.02 NA NA NA 2.15 634 NA 186
<br /> 1/27/2020 8.71 ND 4,573 0.22 146 2,850 20 2 4 2.0 1,090 NO 0.02 NA NA NA 2.03 522 NA 174
<br /> 1/27/2020 8.71 ND 4,573 0.22 146 2,860 20 2 4 2.0 1,110 ND 0.02 NA NA NA 2.05 530 NA 175
<br /> 5/11/2020 8.69 ND 4,415 0.49 295 3,110 NA NA NA NA 990 NA NA NA NA NA 1.72 633 NA NA
<br /> 8/5/2020 8.54 ND 5,930 0.32 217 3,620 30 3 5 2.0 1,800 ND ND NA NA NA 2.80 938 NA 257
<br /> 8/5/2020 8.54 NO 5,930 0.32 217 3,600 30 3 5 2.0 1,800 ND ND NA NA NA 2.77 951 NA 261
<br /> 11/6/2020 8.56 2 5,403 0.28 167 3,560 30 3 5 3.0 1,410 0.07 0.01 NA NA NA 2.92 926 NA 254
<br /> 1/29/2021 8.85 ND 5,151 0.23 190 3,100 20 2 4 2.0 1,330 0.07 0.01 NA NA NA 2.34 720 NA 215
<br /> 5/5/2021 8.84 ND 3,236 1.28 199 2,070 70 16 7 1.0 797 ND 0.19 NA NA NA 1.13 380 NA 116
<br /> 8/4/2021 8.61 0 4,570 0.44 321 2,790 NA NA NA NA 1,130 NA NA NA NA NA NA 570 NA NA
<br /> 10/18/2021 8.85 17 3,298 0.35 291 2,340 20 2 3 1.0 977 ND 0.02 NA NA NA 1.79 605 NA 180
<br /> 1/28/2022 8.56 ND 2,115 0.4 -20 1,300 NA NA NA NA 474 NA NA NA NA NA NA 103 NA NA
<br /> 1/28/2022 8.56 ND 2,115 0.4 -20 1,300 NA NA NA NA 472 NA NA NA NA NA NA 105 NA NA
<br /> 5/3/2022 8.67 ND 3,092 0.37 120 1,930 NA NA NA NA 922 NA NA NA NA NA 0.74 248 NA NA
<br /> 9/29/2022 8.25 ND 5,075 0.27 33 3,190 NA NA NA NA 1,310 NA NA NA NA NA NA 692 NA NA
<br /> 9/29/2022 8.25 ND 5,075 0.27 33 3,170 NA NA NA NA 1,320 NA NA NA NA NA NA 710 NA NA
<br /> 11/4/2022 8.53 ND 5,465 0.32 168 3,150 30 3 6 4.0 1,240 0.16 0.04 NA NA NA 2.38 615 NA 216
<br /> 2/1/2023 8.72 7.8 2,974 0.40 151 1,840 NA NA NA NA 718 NA NA NA NA NA NA 195 NA NA
<br /> 2023 8.072 4 2974 48 0 NA NA NA NA 731 NA NA NA NA NA 0NA 20 NA NA
<br /> '1' 9 .3 1'1 ,8 61 .48 60 NA NA4/4/0 8 ND 2,543 0 232 13 NA NA NA NA NA 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-12 City of Lathrop-CLSP-12
<br /> Total Dissolved Solids NO,as Nitrogen
<br /> 5,000 20
<br /> 4,000
<br /> 15
<br /> j3,000
<br /> E
<br /> E 10
<br /> 02,000 p
<br /> f 2
<br /> 1,000 5
<br /> 0 0
<br /> rn`8,,m m444444 V7irm2 mwQ 08ui 0
<br /> Date Date
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 11 of 281 EKI B90088.03
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