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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-2
<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 8A4 >1,600 2,100 -- -- 1,200 NA 150 64 4.6 190 ND 1.7 0.099 ND ND 1.2 460 0.22 240
<br /> 11/29/2005 7.94 110 2,800 -- - 1,900 NA 240 91 3.8 220 NO 4.2 0.12 ND NO 1.9 700 ND 320
<br /> 2/8/2006 7.84 130 2,800 -- - 1,800 NA 240 89 3.6 220 ND 4.0 0.13 ND ND 1.9 700 0.10 330
<br /> 5/2/2006 8.22 1,600 2,600 - - 1,800 860 210 81 3.0 210 0.13 2.8 0.077 ND ND 1.6 550 0.25 290
<br /> 8/7/2006 7.16 13,000 1,823 8.20 183 1,400 610 150 57 3.3 160 ND 2.2 0.12 0.0025 ND 1.1 370 0.14 210
<br /> 10/25/2006 7.61 >1,600 3,360 7.14 102 2,300 1,100 280 100 4.6 270 ND 3.8 0.16 0.0067 0.0058 2.2 770 0.14 420
<br /> 1/30/2007 8.48 >1,600 2,978 7.62 89 1,800 960 240 86 4.6 250 0.12 6.1 0.12 0.0020 ND 1.7 670 0.10 340
<br /> 5/2/2007 7.34 >1,600 2,417 5.92 90 1,600 710 170 69 5.8 220 0.071 3.1 0.12 0.0023 NO 1.4 510 0.11 270
<br /> 8/2/2007 7.83 >1,600 1,425 6.90 85 980 340 79 36 3.9 130 0.034 0.49 0.060 0.0025 ND 0.81 280 0.20 180
<br /> 11/6/2007 7.81 ND 3,176 4.14 73 2,200 1,000 260 99 5.3 230 0.036 6.80 0.190 0.0026 ND 1.9 720 ND 350
<br /> 2/8/2008 7.39 >1,600 3,045 8.47 101 2,000 1,000 250 92 4.4 240 ND 4.7 0.13 0.0057 0.0021 1.8 700 0.11 360
<br /> 4/25/2008 7.26 >1,600 1,932 6.33 194 1,300 550 130 54 3.6 160 0.020 1.3 0.090 0.0054 0.0037 1.2 420 0.17 220
<br /> 8/21/2008 8.02 >1,600 1,033 7.12 152 610 240 59 22 3.7 89 ND 0.49 NA NA NA 0.51 160 NA 100
<br /> 11/17/2008 7.17 300 3,031 6.09 317 2,100 950 230 92 4.6 200 0.026 4.3 NA NA NA 1.9 710 NA 320
<br /> 2/10/2009 7.83 300 2,756 11.64 144 1,800 910 220 89 3.8 190 ND 4.2 NA NA NA 1.6 670 NA 320
<br /> 4/20/2009 7.83 >1600 3,191 5.25 105 2,200 1,010 240 100 4.5 240 NA 6.6 NA NA NA 2.0 760 NA 330
<br /> 8/5/2009 7.57 >1,600 1,408 6.07 229 840 390 93 39 4.0 135 ND 0.36 NA NA NA 0.68 264 NA 141
<br /> 10/28/2009 7.10 >1,600 2,918 9.40 190 1,820 1,070 263 100 6.0 284 0.13 2.3 NA NA NA 1.63 349 NA 160
<br /> 1/28/2010 7.3 >1,600 2,908 6.20 205 1,830 960 238 90 4.0 199 ND 2.3 NA NA NA 1.44 670 NA 320
<br /> 5/5/2010 8.03 >1,600 948 6.12 162 580 300 75 27 2.0 80 ND 0.80 NA NA NA 0.35 173 NA 108
<br /> 8/30/2010 7.35 >1,600 2,188 4.41 -16 1,500 750 182 73 5.0 220 0.17 2.2 NA NA NA 1.10 490 NA 270
<br /> 8/30/2010 7.35 >1,600 2,188 4.41 -16 1,460 750 182 72 5.0 220 0.18 2.1 NA NA NA 0.98 470 NA 260
<br /> 11/2/2010 6.17 2,830 5,511 7.92 98 1,680 980 236 95 5.0 243 0.05 3.2 NA NA NA 1.38 670 NA 320
<br /> 1/18/2011 7.18 >1,600 2,846 11.64 337 1,690 1,000 251 91 4.0 224 ND 2.8 NA NA NA 1.59 680 NA 340
<br /> 4/19/2011 7.26 >1,600 2,410 4.35 111 1,560 870 215 80 4.0 226 0.20 3.3 NA NA NA 1.44 580 NA 310
<br /> 8/15/2011 7.39 >1,600 2,253 6.02 80 1,190 680 167 64 4.0 190 0.13 2.4 NA NA NA 1.14 480 NA 250
<br /> 10/24/2011 6.98 >1,600 2,958 5.41 377 1,800 1,020 256 93 4.0 215 0.09 5.5 NA NA NA 1.63 660 NA 340
<br /> 1/26/2012 7.15 1,600 2,949 14.02 226 1,760 1,020 256 92 4.0 220 0.13 4.2 NA NA NA 1.62 710 NA 360
<br /> 4/24/2012 7.12 >1,600 2,086 3.64 51 1,240 610 151 57 5.0 172 0.10 2.6 NA NA NA 0.96 470 NA 260
<br /> 7/25/2012 7.58 >1,600 786 4.06 -16 440 180 42 19 2.0 79 0.06 0.31 NA NA NA 0.29 122 NA 87
<br /> 10/22/2012 7.02 >1,600 2,442 2.82 3 1,400 700 168 68 7.0 204 0.05 3.7 NA NA NA 1.26 510 NA 250
<br /> 1/29/2013 7.21 500 3,139 12.65 173 1,850 1,110 285 97 5.0 260 NO 1.6 NA NA NA 1.69 770 NA 380
<br /> 4/25/2013 7.25 900 2,347 8.43 141 1,410 790 198 73 5.0 239 ND 1.6 NA NA NA 1.04 520 NA 250
<br /> 7/30/2013 7.13 >1,600 1,461 3.50 258 834 340 77 36 4.0 148 NO 0.4 NA NA NA 0.72 300 NA 150
<br /> 11'15/2013 6.56 >1,600 2,991 11.08 109 1,810 990 242 95 5.0 232 ND 7.7 NA NA NA 1.44 700 NA 320
<br /> 1/31/2014 7.03 1,600 2,282 41.68 64 1,400 720 175 68 5.0 177 0.08 2.27 NA NA NA 0.88 472 NA 250
<br /> ND is"not detected".
<br /> NA is"not analyzed".
<br /> River Islands-DS-2 River Islands-DS-2
<br /> Total Dissolved Solids NOa+NOz Nitrogen
<br /> 5,000 20
<br /> J
<br /> 4,000 E 15
<br /> 3,000 =
<br /> E m 10
<br /> F 2,000 p
<br /> Z 5
<br /> 1,000
<br /> O
<br /> 0 Z 0
<br /> Date Date
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 257 of 281 EKI B90088.03
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