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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 /> W-2 continued
<br /> Total
<br /> Date Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Zinc 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) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)
<br /> (per 100 (mg/L)
<br /> mL
<br /> 5/1/2006 8.00 >23.0 2,080 - - 1,340 170 40 18 2.0 397 0.06 0.45 0.05 NA -- -- 250 - 199
<br /> 8/15/2006 7.70 ND 2,160 - - 1,420 NA NA NA NA 475 0.06 0.60 NA NA -- -- 310 -- NA
<br /> 10/23/2006 7.60 ND 2,360 - - 1,520 NA NA NA NA 496 0.10 0.84 NA NA -- -- 370 - NA
<br /> 1/30/2007 7.90 ND 1,980 - - 1,280 NA NA NA NA 486 0.16 0.39 NA NA -- -- 250 -- NA
<br /> 4/30/2007 7.84 5.1 1,970 - - 1,290 140 32 15 NO 446 0.05 0.31 0.05 NA - -- 270 - 173
<br /> 8/2/2007 7.60 ND 2,010 - - 1,310 NA NA NA NA 468 0.35 0.45 NA NA -- -- 290 -- NA
<br /> 12/3/2007 7.73 ND 1,980 - - 1,310 NA NA NA NA 447 0.10 0.43 NA NA -- -- 260 - NA
<br /> 2/18/2008 7.76 1.1 1,590 - - 1,200 NA NA NA NA 380 ND 0.29 NA NA -- -- 270 -- NA
<br /> 4/16/2008 7.95 ND 1,820 - - 1,240 140 31 15 2.0 383 0.06 0.32 0.05 NA -- -- 290 - 155
<br /> 7/15/2008 7.47 ND 1,880 - - 1,340 NA NA NA NA 362 0.12 0.58 NA NA -- -- 300 -- NA
<br /> 10/20/2008 7.66 >23.0 3,683 - - 1,300 NA NA NA NA 406 0.25 0.57 NA NA -- -- 300 - NA
<br /> 1/12/2009 7.61 NO 1,954 - - 1,290 NA NA NA NA 457 0.08 0.43 NA NA -- -- 300 -- NA
<br /> 4/20/2009 7.66 ND 1,929 - - 1,260 150 33 16 2.0 466 ND 0.31 0.08 NA -- -- 340 - 161
<br /> 7/27/2009 7.33 ND 2,115 - - 1,280 NA NA NA NA 462 ND 0.33 NA NA -- -- 330 -- NA
<br /> 10/26/2009 7.72 ND 2,067 - - 1,310 160 35 17 2.0 480 ND 0.37 NA NA NO -- 350 0.2 160
<br /> 2/5/2010 7.77 ND 2,003 - - 1,260 140 31 15 2.0 370 ND 0.31 NA NA NO -- 330 0.1 142
<br /> 5/3/2010 7.67 ND 2,011 - - 1,270 160 35 17 2.0 453 ND 0.37 0.0556 NA NO -- 330 0.1 139
<br /> 8/3/2010 7.68 ND 2,024 - - 1,270 160 34 17 2.0 455 ND 0.41 NA NA NO -- 340 0.2 142
<br /> 10/14/2010 7.29 ND 2,207 - - 1,270 160 36 17 2.0 465 ND 0.34 NA NA NO -- 330 0.1 148
<br /> 3/3/2011 7.67 ND 2,160 - 309 1,230 155 34 17 2.0 369 ND 0.30 NA NA NO -- 330 0.3 143
<br /> 4/20/2011 7.67 ND 2,135 0.07 33 1,190 143 31 16 2.0 411 NO 0.34 0.06 NA NO -- 330 0.2 139
<br /> 8/22/2011 7.73 NO 2,019 0.12 296 1,190 142 32 15 2.0 437 NO 0.52 NA NA NO -- 310 ND 133
<br /> 10/31/2011 7.66 ND 2,126 0.14 263 1,170 151 34 16 2.0 382 ND 0.51 NA NA NO -- 300 ND 142
<br /> 1/23/2012 7.71 1.1 2,210 - - 1,200 151 34 16 2.0 468 ND 0.32 NA NA NO -- 310 ND 145
<br /> 4/26/2012 7.69 2.2 2,069 - 105 1,180 132 30 14 2.0 434 ND 0.48 0.0613 NA ND -- 303 ND 143
<br /> 8/1/2012 7.65 ND 2,244 - -94 1,310 194 43 21 2.0 508 0.08 0.81 NA NA ND -- 350 0.1 170
<br /> 10/29/2012 7.60 ND 2,198 - 82 1,290 148 33 16 2.0 556 ND 0.46 NA NA ND -- 300 0.1 158
<br /> 2/4/2013 7.89 NO 1,764 - 134 1,090 127 28 14 2.0 436 ND 0.28 NA NA ND -- 255 ND 140
<br /> 5/6/2013 7.78 6.9 1,922 - 226 1,150 132 30 14 2.0 529' ND 0.50 0.0556 NA ND -- 240 0.1 140
<br /> 8/5/2013 7.58 ND 2,336 0.35 134 1,370 NA NA NA NA 541 ND 0.52 NA NA NA 0.74 350 NA NA
<br /> 11/19/2013 7.64 ND 2,083 0.15 87 1,210 170 39 18 2.0 441 ND 0.29 0.0715 NA NA 0.57 310 NA 182
<br /> 2/6/2014 7.73 ND 2,070 0.32 2 1,230 NA NA NA NA 447 0.08 0.22 NA NA NA 0.68 283 NA NA
<br /> 4/28/2014 7.72 ND 2,051 0.13 215 1,210 150 34 16 2.0 450 0.05 0.25 0.0609 NA NA 1.39 276 NA 162
<br /> 8/6/2014 7.35 ND 2,031 1.54 125 1,210 NA NA NA NA 363 0.08 0.42 NA NA NA 1.41 262 NA NA
<br /> 11/4/2014 7.45 ND 2,155 0.43 172 1,250 230 52 25 2.0 363 0.07 0.38 0.0816 NA NA 0.84 288 NA 180
<br /> 2/2/2015 7.76 ND 1,824 0.33 215 1,110 NA NA NA NA 383 0.05 0.20 NA NA NA 0.59 236 NA NA
<br /> 4/27/2015 7.51 ND 1,983 0.45 182 1,210 NA NA NA NA 395 ND 0.16 NA NA NA NA 254 NA NA
<br /> 7/27/2015 7.47 ND 1,822 0.49 133 1,090 NA NA NA NA 318 ND 0.25 NA NA NA 0.59 208 NA NA
<br /> 8/31/2015 7.46 NA 1,705 - - NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
<br /> 10/29/2015 7.56 ND 1,519 0.57 70 980 160 35 17 2.0 290 ND 0.27 0.0546 NA NA 0.56 185 NA 129
<br /> 2/4/2016 7.83 ND 2,179 0.64 -1 1,250 NA NA NA NA 417 ND 0.24 NA NA NA 0.79 256 NA NA
<br /> 4/21/2016 7.88 ND 2,027 0.26 71 1,220 130 31 14 2.0 371 0.03 0.22 NA NA NA 0.69 263 NA 170
<br /> 8/8/2016 7.64 ND 2,044 0.08 83 1,230 160 35 17 2.0 361 0.05 0.26 NA NA NA 0.86 239 NA 155
<br /> ND 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 /> EKI Environment&Water,Inc.
<br /> July 2023 Page 164 of 281 EKI B90088.03
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