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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 /> DS-1
<br /> Total
<br /> Date Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate
<br /> Sampled 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 /> 8/31/2005 T90 >1,600 2,100 - - 1,200 NA 150 61 6.5 190 0.40 2.9 0.11 ND ND 1.3 460 0.20 220
<br /> 11/29/2005 8.21 900 3,000 - - 2,000 NA 270 92 4.3 240 NO 4.4 0.11 ND NO 2.1 780 ND 320
<br /> 2/8/2006 7.81 130 2,900 - - 2,000 NA 270 89 3.6 250 ND 4.1 0.12 ND ND 2.0 740 0.11 330
<br /> 5/1/2006 7.83 >1,600 2,400 - - 1,600 850 210 77 3.1 220 ND 2.1 0.11 ND ND 1.6 500 0.26 270
<br /> 8/7/2006 7.44 90,000 1,857 8.05 143 1,500 600 150 56 3.5 180 ND 2.5 0.13 0.0029 ND 1.2 400 0.17 220
<br /> 10/26/2006 7.37 >1,600 3,447 6.37 134 2,300 1,100 270 97 4.4 300 ND 3.7 0.12 0.0065 0.0032 2.3 770 0.20 430
<br /> 1/30/2007 7.81 >1,600 3,046 7.06 129 1,900 960 250 84 4.9 260 ND 5.9 0.11 0.0019 ND 1.9 720 0.11 360
<br /> 5/2/2007 7.66 >1,600 605 6.97 128 290 150 36 15 3.4 58 0.027 0.36 0.033 0.0014 NO 0.26 88 0.12 83
<br /> 8/2/2007 7.95 >1,600 1,500 7.90 116 930 310 70 32 4.1 120 0.034 0.27 0.054 0.0024 ND 0.76 230 0.17 150
<br /> 11/6/2007 7.57 ND 2,572 7.56 -17 2,500 1,200 290 110 5.2 270 ND 5.90 0.150 0.0029 NO 2.5 910 0.10 340
<br /> 2/8/2008 7.53 1,600 3,446 14.23 158 2,200 1,100 280 100 3.9 260 0.021 3.1 0.10 0.0064 ND 2.0 790 0.16 390
<br /> 4/25/2008 7.39 >1,600 792 7.36 227.4 1,100 420 100 41 3.4 130 ND 0.67 0.075 0.0057 0.0042 0.92 340 0.19 190
<br /> 8/21/2008 8.18 >1,600 1,003 8.05 127 640 230 55 23 3.3 96 ND 0.28 NA NA NA 0.54 170 NA 100
<br /> 11/17/2008 7.44 1,600 3,601 7.19 146 2,500 1,200 290 110 5.1 280 0.011 3.7 NA NA NA 2.5 880 NA 350
<br /> 2/10/2009 7.40 500 3,165 10.30 170 2,100 1,040 260 96 4.2 240 ND 1.9 NA NA NA 2.0 800 NA 330
<br /> 4/20/2009 7.47 >1,600 3,806 4.62 79 2,800 1180 290 110 4.9 310 NA 6.0 NA NA NA 2.7 960 NA 380
<br /> 8/5/2009 7.75 >1,600 1,505 6.68 213 790 390 92 40 4.0 144 0.08 0.29 NA NA NA 0.70 272 NA 146
<br /> 10/28/2009 7.10 >1,600 3,266 10.40 228 2,000 1,170 298 104 6.0 281 0.16 1.50 NA NA NA 1.8 770 NA 310
<br /> 1/28/2010 7.4 1,600 2,931 7.10 212 1,790 960 244 86 4.0 204 ND 1.18 NA NA NA 1.33 660 NA 290
<br /> 5/5/2010 7.55 >1,600 980 4.12 183 550 280 70 25 2.0 77 ND 0.44 NA NA NA 0.34 160 NA 102
<br /> 8/30/2010 7.34 1,600 2,163 3.92 -7 1,470 710 169 70 5.0 241 0.09 1.60 NA NA NA 1.11 460 NA 260
<br /> 11/2/2010 6.62 1,600 3,140 8.07 109 1,900 1,010 249 95 5.0 295 0.09 4.36 NA NA NA 1.61 730 NA 310
<br /> 1/17/2011 7.27 1,600 2,917 8.84 264 1,670 950 236 88 4.0 251 0.06 1.33 NA NA NA 1.69 680 NA 300
<br /> 4/18/2011 7.34 >1,600 2,336 7.29 145 1,500 770 194 70 4.0 218 0.07 1.09 NA NA NA 1.34 500 NA 330
<br /> 8/15/2011 7.75 >1,600 2,180 10.66 139 1,330 630 157 59 4.0 212 0.53 1.83 NA NA NA 1.11 460 NA 240
<br /> 10/24/2011 7.01 >1,600 2,904 4.25 341 1,760 940 240 84 3.0 252 0.61 3.03 NA NA NA 1.61 640 NA 320
<br /> 1/26/2012 6.99 111 3,250 8.05 224 1,930 1,160 302 98 5.0 261 ND 5.18 NA NA NA 1.74 790 NA 400
<br /> 4/25/2012 7.25 >1,600 2,104 3.14 83 1,220 580 146 53 4.0 173 0.40 2.61 NA NA NA 0.98 460 NA 250
<br /> 7/25/2012 8.24 >1,600 800 6.20 -19 450 190 42 20 2.0 82 0.06 0.07 NA NA NA 0.21 124 NA 90
<br /> 10/22/2012 6.95 240 2,454 1.60 67 1,320 630 147 64 6.0 233 0.13 0.47 NA NA NA 1.28 480 NA 250
<br /> 1/29/2013 7.31 130 3,206 6.52 97 1,930 1,020 259 90 4.0 286 ND 1.51 NA NA NA 1.85 790 NA 390
<br /> 4/25/2013 7.40 1,600 2,373 6.40 75 1,350 690 172 64 7.0 258 ND 1.42 NA NA NA 1.08 500 NA 240
<br /> 7/30/2013 7.54 920 1,506 5.26 234 867 330 73 37 5.0 153 0.30 0.98 NA NA NA 0.71 300 NA 162
<br /> 132013 2 220 2 72 -7 19630 830 203 79 5.00 236 0N33 3703 NA NA NA 1.359 630 NA 189/5/014 2 0 1,69' .2 0 0 1 1.0 01/ 2 7.7 707 3 47 13 4 157 D NA NA NA 336 NA 148
<br /> NO is"not detected".
<br /> NA is"not analyzed".
<br /> River Islands-DS-1 River Islands-DS-1
<br /> Total Dissolved Solids NOs+NOz Nitrogen
<br /> 5,000 20
<br /> 4,000 15
<br /> 3,000 i
<br /> E a 10
<br /> y 2,000 0
<br /> of 1,000 z 5
<br /> O
<br /> p i 0
<br /> o o
<br /> �-+Date 'Date'
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 253 of 281 EKI B90088.03
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