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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 /> KM W-2 continued
<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 /> 10/31/2011 7.02 NO 3,709 0.10 309 2,540 1,140 306 91 6.0 398 ND 5.59 NA NA ND -- 430 ND 1,000
<br /> 1/23/2012 6.97 NO 3,723 - - 2,560 1,120 301 90 7.0 484 NO 4.93 NA NA NO -- 410 NO 980
<br /> 4/26/2012 6.96 NO 3,560 - 125 2,530 1.060 289 83 7.0 437 NO 4.01 0.0358 NA NO -- 430 NO 980
<br /> 8/1/2012 6.93 6.9 3,482 - 3 2,500 1,030 272 85 7.0 488 NO 4.56 NA NA NO -- 420 NO 940
<br /> 10/29/2012 7.01 NO 3,306 - 127 2,350 926 246 76 6.0 427 NO 4.58 NA NA NO -- 360 NO 820
<br /> 2/4/2013 7.23 NO 3,140 - 192 2,360 1,050 275 89 8.0 451 NO 4.94 NA NA NO -- 430 NO 920
<br /> 5/6/2013 7.11 9.2 3,394 - 154 2,380 1.090 284 92 8.0 506 NO 4.15 0.0308 NA NO -- 400 NO 850
<br /> 8/5/2013 7.24 1.1 3,371 0.39 90 2,290 NA NA NA NA 518 NO 4.38 NA NA NA 1.62 420 NA NA
<br /> 11/19/2013 7.33 NO 3,287 0.15 209 2,260 980 257 83 7.0 428 NO 4.64 0.035 NA NA 1.19 400 NA 850
<br /> 11/19/2013 7.33 NO 3,287 0.15 209 2,250 970 254 82 7.0 421 NO 4.46 0.0378 NA NA 1.18 400 NA 840
<br /> 2/6/2014 7.09 NO 3,364 0.35 119 2,350 NA NA NA NA 432 0.16 4.58 NA NA NA 1.60 390 NA NA
<br /> 4/28/2014 7.07 NO 3,513 0.42 268 2,480 1,120 294 95 8.0 460 0.15 4.45 0.0375 NA NA 1.73 410 NA 869
<br /> 4/28/2014 7.07 NO 3,513 0.42 268 2,470 1.110 289 94 7.0 454 0.15 4.54 0.0352 NA NA 1.77 400 NA 847
<br /> 8/6/2014 6.92 2.2 3,600 2.38 277 2,520 NA NA NA NA 425 0.14 4.62 NA NA NA 1.74 390 NA NA
<br /> 8/6/2014 6.92 NO 3,600 2.38 277 2,490 NA NA NA NA 409 0.15 4.63 NA NA NA 1.76 390 NA NA
<br /> 11/4/2014 6.93 NO 3,510 0.41 219 2,500 1,010 267 83 7.0 411 0.15 4.43 0.0351 NA NA 1.90 410 NA 850
<br /> 11/4/2014 6.93 NO 3,510 0.41 219 2,510 1.010 268 84 7.0 409 0.15 4.53 0.0367 NA NA 1.76 380 NA 830
<br /> 2/2/2015 6.99 NO 3,743 0.38 268 2,550 NA NA NA NA 419 0.14 5.01 NA NA NA 1.78 420 NA NA
<br /> 4/27/2015 6.99 NO 3,660 0.54 189 2,570 NA NA NA NA 441 NO 3.47 NA NA NA NA 420 NA NA
<br /> 7/27/2015 7.04 NO 3,569 0.40 126 2,680 NA NA NA NA 409 NO 4.30 NA NA NA 1.90 440 NA NA
<br /> 8/31/2015 6.98 NA 3,863 - - NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
<br /> 10/29/2015 7.03 NO 3,761 0.52 67 2,660 1,120 292 95 7.0 434 NO 5.12 0.0376 NA NA 1.90 450 NA 960
<br /> 2/4/2016 7.11 NO 3,742 0.73 55 2,800 NA NA NA NA 449 NO 5.26 NA NA NA 2.45 435 NA NA
<br /> 4/21/2016 6.90 NO 4,065 0.52 101 2,880 1210 315 102 8.0 415 NO 1 4.15 NA NA NA 2.46 520 NA 992
<br /> Revised Groundwater Limitations in Groundwater Limitations Com liance Plan,August 1,2016
<br /> 2.2 3,124 1,412 11 555 0.3 6.21 544 1,191
<br /> 8/8/2016 6.97 NO 3,808 0.15 130 2,880 1,230 323 104 7.0 461 0.05 5.54 NA NA NA 2.70 409 NA 849
<br /> 5/8/2017 6.75 NO 4,003 0.17 174 2,850 NA NA NA NA 468 NA NA NA NA NA 2.79 480 NA NA
<br /> 11/28/2017 7.46 NO 3,641 0.36 152 2,490 1.020 258 91 6.0 434 NO 4.19 NA NA NA 2.23 415 NA 817
<br /> 5/2/2018 7.00 NO 3,525 0.91 106 2,560 NA NA NA NA 414 NA NA NA NA NA 2.41 432 NA NA
<br /> 11/5/2018 6.89 NO 3,851 0.11 278 2,640 1.050 274 88 7.0 393 NO 4.21 NA NA NA 2.02 414 NA 831
<br /> 5/1/2019 7.01 NO 3,725 0.34 116 2,630 NA NA NA NA 523 NA NA NA NA NA 2.04 470 NA NA
<br /> 5/1/2019 7.01 NO 3,725 0.34 116 2,610 NA NA NA NA 472 NA NA NA NA NA 2.10 470 NA NA
<br /> 10/31/2019 6.99 NO 3,680 0.20 283 2,630 1,180 297 106 8.0 405 NO 5.18 NA NA NA 2.19 386 NA 821
<br /> 5/12/2020 6.93 ND 3,536 0.09 207 2,570 NA NA NA NA 489 NA NA NA NA NA 1.85 381 NA NA
<br /> 11/4/2020 6.96 ND 3,165 0.13 170 2,370 880 225 77 9.0 432 0.03 4.20 NA NA IN 1.66 356 NA 719
<br /> 5/3/2021 7.00 ND 3,000 0.26 256 2,300 NA NA NA NA 360 NA NA NA NA NA 1.58 320 NA NA
<br /> 10/19/2021 6.95 23 3,201 0.48 161 2,260 900 231 79 7.0 349 NO 3.99 NA NA NA 1.57 317 NA 675
<br /> 5/2/2022 7.01 ND 3,067 0.47 -9 2,140 NA NA NA NA 335 NA NA NA NA NA 1.4fi 280 NA NA
<br /> 11/1/2022 7.00 ND 3,119 0.25 161 2,070 700 176 63 5.0 376 NO 2.75 NA NA NA 1.47 305 NA 599
<br /> 4/3/2023 7.01 ND 2,820 0.34 414 1,970 NA NA NA NA 283 NA NA NA NA NA 1.20 278 NA NA
<br /> NO is"not detected".
<br /> NA is not analyzed".
<br /> "-"data not available.
<br /> Prior to 8/5/2013 samples collected were not filtered.Beginning 8/5/2013 samples were filtered.
<br /> Concentrations in bold exceed the Groundwater Limitation.
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 132 of 281 EKI B90088.03
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