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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-9
<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 /> 8/26/2005 9.36 NA 4,918 - -96 3,510 NA 126 69 ND 775 NO 1.34 0.037 NA ND NA 870 NA 869
<br /> 11/10/2005 7.57 NA 5,027 - 411 3,450 NA 28 16 ND 162 ND 0.31 0.038 NA ND NA 900 NA 870
<br /> 2/23/2006 8.32 >23 4,639 - -18 3,410 NA 130 75 2.0 ND 0.07 0.47 0.030 NA ND NA 880 NA 850
<br /> 5/16/2006 7.30 2.2 >3999 - - 3,500 NA 151 93 2.0 739 ND 1.50 0.031 NA ND NA 960 NA 850
<br /> 9/13/2006 8.14 2.2 6,073 - 123 4,160 NA 199 119 4.0 1,250 0.09 2.49 0.058 NA ND NA 1,320 NA 1,210
<br /> 9/5/2013 7.30 900 5,261 0.28 84 3,490 900 180 110 2.2 980 ND 2.10 NA NA NA 2.30 880 NA 810
<br /> 9/5/2013 7.30 170 5,261 0.28 84 3,480 900 180 110 2.2 970 NO 2.00 NA NA NA 2.20 880 NA 810
<br /> 9/18/2017 7.45 ND 3,780 0.16 145 2,550 390 67 54 2.0 703 ND 0.26 NA NA NA 1.33 464 NA 632
<br /> 11/29/2017 8.43 NO 1,674 0.53 58 1,020 90 19 11 ND 338 NO 0.15 NA NA NA 0.33 130 NA 250
<br /> 2/28/2018 8.01 ND 2,716 2.18 126 1,730 220 44 26 1.0 539 ND 0.44 NA NA NA 0.78 284 NA 435
<br /> 11/6/2018 8.06 2.0 979 0.49 169 520 30 6 3 ND 176 0.04 0.09 NA NA NA 0.42 117 NA 67.6
<br /> 4/30/2019 7.79 ND 2,241 0.53 215 1,320 NA NA NA NA 429 NA NA NA NA NA 0.89 360 NA NA
<br /> 10/30/2019 8.09 NO 853 0.47 195 590 30 7 4 ND 201 0.09 0.08 NA NA NA 0.28 88 NA 104
<br /> 5/11/2020 7.83 ND 2,450 0.89 258 1,760 NA NA NA NA 640 NA NA NA NA NA 0.97 406 NA NA
<br /> 11/6/2020 7.57 NA 3,480 0.43 161 1,680 420 84 50 2.0 696 0.04 NO NA NA NA 1.59 568 NA 588
<br /> 11/6/2020 7.57 NA 3,480 0.43 161 1,840 260 55 31 2.0 699 ND 0.70 NA NA NA 1.57 560 NA 550
<br /> 5/5/2021 7.60 2.0 3,773 0.56 199 2,450 NA NA NA NA 439 NA NA NA NA NA 1.70 600 NA NA
<br /> 10/18/2021 7.65 2.0 2,705 0.55 256 2,200 340 67 41 2.0 573 ND 1.00 NA NA NA 1.29 490 NA 553
<br /> 5/3/2022 7.45 NO 3,649 0.64 166 2,040 NA NA NA NA 716 NA NA NA NA NA 1.20 430 NA NA
<br /> 11/9/2022 7.70 7.8 2,670 0.63 191 1,620 210 46 24 2.0 565 0.17 0.63 NA NA NA 0.90 331 NA 419
<br /> 4/4/2023 7.81 ND 2,620 0.57 273 1,530 NA NA NA NA 374 NA NA NA NA NA 0.86 320 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-9 City of Lathrop-CLSP-9
<br /> Total Dissolved Solids NO,as Nitrogen
<br /> 5,000 50
<br /> 4,000 40
<br /> •
<br /> �3,000 E 30
<br /> E z
<br /> ;2,000 p 20
<br /> ' z
<br /> 1,000 10
<br /> Mr •
<br /> 0 0 0 0 0 o
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<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 7 of 281 EKI B90088.03
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