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Mississippi River Water Quality Summary <br /> March 12, 2020 <br /> Page 2 <br /> Table 1 —Water Quality Source Information by Site <br /> • • • Data <br /> Eency • l I I • . • • • <br /> Site <br /> Email St. Cloud 01/06/2010 <br /> St. Cloud MDH Transfer 1730027 Treatment to <br /> Plant Intake 11/04/2019 <br /> EIMS River Mile 01/07/1976 <br /> Anoka MCES Portal UM8716 871.6 to <br /> 8/26/2019 <br /> EIMS River Mile 08/19/1976 <br /> Fridley MCES Portal UM8628 862.8 to <br /> 04/29/2019 <br /> Email Fridley 01/05/2010 <br /> Fridley MDH Transfer 1270024 Treatment to <br /> Plant Intake 1 11/05/2019 <br /> C. Methods <br /> Statistics were performed on each of the water quality constituents measured at the monitoring sites. For <br /> each parameter, the minimum, maximum, 95th percentile, average, standard deviation, total sample count, <br /> number of non-detects were calculated, and the sampling date range were identified. In the MCES and MDH <br /> databases, values less than the detection limit were demarked by a "less than" (<)sign. Data such as this <br /> was treated as a non-detect and the value was represented as zero (0). These statistics were then <br /> summarized by constituent in tabular form. The statistical summary information is based on all individual data <br /> reported by MCES and MDH. There has been no deletion of data to account for statistically significant <br /> outliers. Time series plots were also created in review of conventional constituents. <br /> D. Results <br /> Anoka, MCES <br /> MCES has been sampling at the Anoka site since the mid-1970s and the list of constituents analyzed has <br /> grown over the years. Table A located in the appendix provides the full list of constituents analyzed and <br /> available in the MCES' EIMS for the Anoka and Fridley sites. The data analysis and subsequent results for <br /> this study focused on a sub-set of constituents important to surface water treatment. These constituents are <br /> characterized in Tables 2 and 3. <br /> Table 2 summarizes water quality constituents of concern in planning and design of drinking water treatment <br /> facilities. Table 3 broadens the list to include all those parameters regulated under the Safe Drinking Water <br /> Act(SDWA)and also lists the regulatory maximum contaminant limit(MCL)and public health goals for each <br /> constituent. <br /> MCES also monitors for other priority pollutants beyond those found in the Safe Drinking Water Act. Some of <br /> these monitored constituents are emerging pollutants of concern.A full list of pollutants with and the number <br /> of samples with detections can be found in Table A in the Appendix. <br /> Engineers I Architects I Planners I Scientists <br /> Short Elliott Hendrickson Inc.,3535 Vadnais Center Drive,St.Paul,MN 55110-3507 <br /> SEH is 100%employee-owned I sehinc.com 1 651.490.2000 1 800.325.2055 1 888.908.8166 fax <br />