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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 /> MWM4
<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 /> 5/19/2005 7.62 300 1,400 -- -- 980 NA 91 37 5.0 247 ND 0.57 0.131 ND 0.022 ND 300 NO 140
<br /> 6/27/2005 7.47 170 1,500 - - 1,000 NA 92 33 ND 200 0.31 0.55 ND ND ND ND 270 ND 140
<br /> 11/2/2005 7.28 4 1,566 1.67 43 890 380 99 39 4.1 180 NO 0.78 0.081 0.0050 NO 0.60 220 0.35 140
<br /> 2/8/2006 7.23 ND 1,499 1.24 41 830 380 93 36 5.1 160 ND 0.78 0.080 0.0038 ND 0.56 220 0.38 140
<br /> 5/5/2006 6.94 130 1,522 1.32 68 870 430 100 42 3.8 180 ND 0.77 0.085 0.0063 ND 0.62 230 0.35 150
<br /> 8/8/2006 6.92 500 1,706 3.61 86 1,000 460 110 45 3.5 190 ND 0.44 0.098 0.0018 ND 0.64 260 0.31 150
<br /> 10/30/2006 7.38 ND 1,596 1.45 102 1,000 420 99 41 3.7 190 ND 0.55 0.090 0.0020 0.0027 0.62 250 0.40 150
<br /> 10/30/2006 7.38 ND 1,596 1.45 102 1,000 410 97 41 3.5 190 ND 0.61 0.085 0.0021 0.0027 0.63 240 0.40 140
<br /> 2/5/2007 7.24 ND 1,594 0.99 75 1,000 420 97 43 4.1 180 ND 0.63 0.084 0.0013 NO 0.55 260 0.34 150
<br /> 5/7/2007 7.22 ND 1,754 2.39 51 1,100 460 110 46 3.1 190 ND 0.48 0.093 0.0027 0.0034 0.70 290 0.32 160
<br /> 8/3/2007 6.82 13 1,911 1.20 111 1,400 420 120 30 2.7 130 NO 0.68 0.110 0.0011 NO 0.73 330 0.32 160
<br /> 11/12/2007 7.10 14 1,879 0.60 -38 1,300 480 120 45 3.7 190 ND 0.80 0.100 0.0018 ND 0.65 330 0.35 160
<br /> 11/12/2007 7.10 7 1,879 0.60 -38 1,300 480 120 46 3.0 190 NO 0.81 0.110 0.0014 NO 0.65 320 0.35 160
<br /> 2/8/2008 7.19 ND 1,947 1.06 82 1,300 500 120 48 3.7 220 ND 0.50 0.11 0.0033 ND 0.57 330 0.32 160
<br /> 4/29/2008 7.12 ND 2,369 1.18 139 1,400 490 120 46 2.9 280 ND 0.15 0.12 0.0023 0.0022 0.87 430 0.36 190
<br /> 8/25/2008 7.19 2 2,284 0.47 87 1,400 570 140 53 3.4 280 ND 0.35 NA NA NA 0.80 400 NA 180
<br /> 11/24/2008 7.16 350 2,105 0.61 8 1,400 630 150 62 3.6 270 NO 0.77 NA NA NA 0.72 420 NA 160
<br /> 2/17/2009 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS
<br /> 4/15/2009 7.12 2 2,582 1.72 94 1,400 380 95 35 2.0 380 ND 0.029 NA NA NA 0.96 450 NA 190
<br /> 7/29/2009 7.28 30 2,483 3.39 160 1,450 400 106 32 2.0 420 NO ND NA NA NA 0.71 440 NA 190
<br /> 10/22/2009 7.40 110 2,351 3.80 48 1,420 420 108 36 2.0 387 NO 0.03 NA NA NA 0.56 420 NA 173
<br /> 2/1/2010 7.2 22 2,167 3.60 140 1,480 400 105 34 2.0 379 NO 0.03 NA NA NA 0.54 410 NA 185
<br /> 4/22/2010 7.88 4 2,412 3.50 66 1,450 400 106 33 2.0 450 NO 0.03 NA NA NA 0.51 400 NA 180
<br /> 8/26/2010 6.99 30 2,206 0.59 410 1,350 570 144 50 3.0 336 0.07 0.22 NA NA NA 0.40 400 NA 149
<br /> 10/25/2010 6.89 23 2,310 8.09 193 1,320 520 134 44 3.0 337 NO 0.13 NA NA NA 0.41 400 NA 148
<br /> 10/25/2010 6.89 23 2,340 8.09 193 1,340 520 134 44 3.0 333 ND 0.14 NA NA NA 0.43 400 NA 149
<br /> 1/25/2011 7.09 NO 2,281 4.90 365 1,350 520 135 45 3.0 302 NO 0.15 NA NA NA 0.42 400 NA 145
<br /> 4/25/2011 7.06 2 2,307 3.52 110 1,320 520 137 44 3.0 325 0.07 0.05 NA NA NA 0.51 400 NA 155
<br /> 8/18/2011 6.93 NO 2,813 1.88 307 1,630 500 134 41 3.0 437 NO 0.02 NA NA NA 0.77 470 NA 192
<br /> 10/27/2011 7.27 ND 2,945 5.30 352 1,600 570 152 46 3.2 386 0.07 0.06 NA NA NA 0.83 490 NA 199
<br /> 1/24/2012 7.25 2 2,980 3.87 126 1,770 540 143 45 3.0 562 NO 0.03 NA NA NA 0.93 540 NA 209
<br /> 5/3/2012 7.16 13 3,117 7.59 52 1,810 620 163 51 3.0 501 NO 0.03 NA NA NA 0.94 570 NA 207
<br /> 7/30/2012 7.16 27 3,250 4.54 -5 1,860 600 157 50 3.0 537 NO ND NA NA NA 0.93 610 NA 207
<br /> 10/25/2012 7.18 22 2,831 4.42 90 1,580 560 146 48 3.0 487 NO 0.01 NA NA NA 0.69 460 NA 162
<br /> 1/31/2013 7.30 ND 3,410 3.07 161 1,890 630 164 53 3.0 515 NO ND NA NA NA 0.98 620 NA 211
<br /> 5/2/2013 7.22 80 3,296 2.56 162 1,960 680 182 55 3.0 595 NO ND NA NA NA 0.85 660 NA 213
<br /> 8/2/2013 7.34 >1,600 2,776 4.81 236 1,570 550 143 47 2.0 390 NO ND NA NA NA 0.70 540 NA 179
<br /> 8/2/2013 7.34 1,600 2,776 4.81 236 1,520 540 140 47 2.0 170 NO ND NA NA NA 0.70 540 NA 173
<br /> 11/20/2013 7.25 23 2,434 1.96 60 1,300 510 132 43 3.0 332 ND 0.03 NA NA NA 0.57 430 NA 136
<br /> 2/4/2014 7.26 ND 3,085 3.05 106 1,730 600 157 50 3.0 404 ND 0.01 NA NA NA 0.81 540 NA 163
<br /> NO is"not detected".
<br /> NA is"not analyzed".
<br /> NS denotes"not sampled-.Well MWM-4 was in accessible during list quarter 2009 monitoring event.
<br /> City of Lathrop-MWM-4 City of Lathrop-Milli
<br /> Total Dissolved Solids NO3+NO2 Nitrogen
<br /> 5,000 20
<br /> 4,000
<br /> �15
<br /> w 3,000 E
<br /> E N 10
<br /> G 2,000 i
<br /> ti
<br /> 1,000 = 5
<br /> 0 0
<br /> oho
<br /> Date Date
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 25 of 281 EKI B90088.03
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