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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 /> MWM-16
<br /> Total
<br /> Date Coliform EC DO ORIP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Bromide Chloride Fluoride Sulfate
<br /> Sampled PH Bact100 eria (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 /> 5/24/2005 7.23 50 2,600 - - 1,700 NA 190 85 5.2 317 ND 0.50 0.545 ND 0.159 1.3 490 NO 310
<br /> 6/27/2005 7.12 ND 2,900 - - 1,800 NA 220 89 ND 260 4.1 0.81 0.340 ND ND 1.3 490 ND 340
<br /> 11/4/2005 6.95 2 2,815 0.20 55 1,600 870 200 98 4.4 300 ND 1.20 0.079 0.0087 0.002 1.4 450 0.27 370
<br /> 2/7/2006 6.96 ND 3,021 0.47 fit 2,100 990 220 100 9.3 330 ND 1.60 0.086 0.0091 ND 1.6 530 0.24 430
<br /> 5/2/2006 6.65 2 2,986 1.03 116 1,900 940 210 100 4.5 330 ND 1.3 0.084 0.010 ND 1.5 470 0.21 390
<br /> 5/2/2006 6.65 21 2,986 1.03 116 1,700 940 210 100 4.9 330 ND 1.2 0.087 0.010 0.0023 1.5 480 0.19 400
<br /> 8/1/2006 6.64 4 3,186 0.09 128 1,900 1,100 240 120 5.6 360 ND 1.8 0.095 0.0028 ND 1.6 540 0.14 450
<br /> 10/24/2006 6.45 ND 3,206 0.18 105 2,200 1,100 230 120 5.0 360 ND 1.1 0.11 0.0081 0.0032 1.7 550 0.26 490
<br /> 10/24/2006 6.45 ND 3,206 0.18 105 2,100 1,000 220 110 4.6 360 NO 0.92 0.10 0.0073 0.0030 1.7 540 0.27 490
<br /> 2/1/2007 7.27 2 3,136 0.79 112 1,900 1,000 220 120 4.7 360 ND 1.6 0.088 0.0027 ND 1.6 540 0.18 490
<br /> 5/3/2007 6.97 ND 2,949 0.15 122 2,000 880 190 99 4.1 320 NO 0.89 0.073 0.0023 ND 1.4 470 0.27 430
<br /> 7/31/2007 6.93 30 2,570 1.00 87 1,900 740 160 83 2.8 300 ND 0.90 0.073 0.0023 ND 1.2 390 0.28 390
<br /> 11/6/2007 7.00 ND 2,593 0.17 106 1,900 800 170 90 3.5 300 NO 1.3 0.079 0.0026 ND 1.4 400 0.23 390
<br /> 2/4/2008 6.9 11 2,392 0.74 129 1,800 820 180 92 2.8 310 ND 1.0 0.088 0.0042 0.0027 1.3 400 0.25 420
<br /> 4/23/2008 6.97 ND 2,334 0.31 257 1,500 700 150 81 3.1 300 NO 0.86 0.081 0.0032 NO 1.1 370 0.27 350
<br /> 8/19/2008 7.02 50 1,873 0.22 150 1,300 570 120 65 2.8 250 ND 0.50 NA NA NA 0.83 230 NA 240
<br /> 11/20/2008 7.09 ND 1,561 0.37 87 1,000 420 89 49 2.2 220 ND 0.50 NA NA NA 0.60 150 NA 160
<br /> 2/11/2009 7.00 ND 1,814 0.65 102 700 360 75 42 2.1 200 ND 0.22 NA NA NA 0.62 130 NA 160
<br /> 4/14/2009 7.02 4 1,732 0.60 103 1,100 600 120 72 2.4 260 ND 0.93 NA NA NA 0.67 160 NA 190
<br /> 7/30/2009 7.11 2 1,515 0.30 83 1,060 440 93 51 2.0 252 NO 0.66 NA NA NA 0.39 131 NA 146
<br /> 10/21/2009 7.10 170 1,556 0.80 63 1,090 470 99 54 2.0 263 NO 0.72 NA NA NA 0.41 143 NA 158
<br /> 1/27/2010 7.60 130 1,251 1.37 31 979 380 80 44 2.0 208 NO 0.40 NA NA NA 0.28 110 NA 122
<br /> 5/6/2010 7.16 ND 1,530 0.55 165 1,010 400 83 46 1.8 211 NO 0.38 NA NA NA 0.29 129 NA 134
<br /> 8/25/2010 7.03 2 1,331 0.15 - 790 350 74 40 2.0 214 NO 0.35 NA NA NA 0.25 96 NA 90
<br /> 10/21/2010 7.08 ND 1,410 0.32 396 850 350 73 40 2.0 234 0.06 0.40 NA NA NA 0.25 101 NA 95
<br /> 1/27/2011 7.22 ND 1,375 1.24 291 980 410 88 47 2.0 226 ND 0.58 NA NA NA 0.30 146 NA 126
<br /> 4/25/2011 6.95 240 2,114 0.38 367 1,330 600 128 68 3.0 275 0.05 0.48 NA NA NA 0.77 290 NA 270
<br /> 8/19/2011 6.85 ND 2,218 1.96 122 1,370 600 131 67 3.0 271 0.06 0.44 NA NA NA 0.85 310 NA 270
<br /> 10/26/2011 7.06 ND 2,268 0.15 326 1,290 630 138 69 3.0 250 0.07 0.57 NA NA NA 0.82 284 NA 260
<br /> 1/24/2012 6.93 ND 2,377 0.40 179 1,310 590 126 67 2.0 306 NO 0.65 NA NA NA 0.74 300 NA 260
<br /> 5/12012 6.95 ND 1,981 3.08 127 1,170 510 109 57 2.0 237 NO 0.25 NA NA NA 0.56 256 NA 213
<br /> 7/26/2012 7.07 ND 2,079 1.37 15 1,330 530 110 61 2.0 255 NO 0.36 NA NA NA 0.74 290 NA 240
<br /> 10/24/2012 6.99 2 1,947 0.43 64 1,130 460 98 53 3.0 252 NO 0.48 NA NA NA 0.48 199 NA 175
<br /> 1/30/2013 7.12 4 1,828 0.64 80 1,250 490 105 55 3.0 259 NO 0.67 NA NA NA 0.43 218 NA 197
<br /> 4/29/2013 7.04 ND 1,963 0.37 222 1,150 500 108 57 2.0 259 NO 0.66 NA NA NA 0.47 217 NA 191
<br /> 8/1/2013 7.17 ND 1,804 0.27 16 1,080 490 103 56 2.0 246 NO 0.70 NA NA NA 0.44 188 NA 166
<br /> 11/21/2013 7.02 6.8 1,864 0.12 -129 1,090 520 110 59 2.0 254 NO 0.87 NA NA NA 0.42 209 NA 177
<br /> 2/4/2014 7.39 7.8 1,822 0.16 90 1,170 480 102 55 2.0 233 NE 0.78 NA NA NA 0.54 200 NA 170
<br /> 4/23/2014 7.00 ND 1,471 0.81 213 920 430 90 50 2.0 205 0.09 0.24 NA NA NA 0.40 122 NA 88.6
<br /> NO is"not detected'.
<br /> NA is not analyzed
<br /> Lab results from duplicate 10/24/06 sample were switched with another sample.The correct results are listed here.
<br /> City of Lathrop-MWM-16 City of Lathrop-MWM-16
<br /> Total Dissolved Solids NOs+NOz Nitrogen
<br /> Well Well
<br /> 5,000 abandoned 30 abandoned
<br /> 4,000 25
<br /> m3,000 20
<br /> E E
<br /> 15
<br /> yo 2,000 i
<br /> H + 10
<br /> O
<br /> 1,000 i 5
<br /> vp
<br /> 0 rn S m 0
<br /> Date Date -,-,11-,-,-,-,-,-,-,
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 65 of 281 EKI B90088.03
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