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Lake Decatur Watershed Management Plan—Phase III Scope of Services&Budget <br /> R."r_WD__W-446�4Wk—I.SAWX <br /> aa.FX <br /> • FlwarNro mA»p.ircw.sv me Gman t.W.4h t.km bw Mut j <br /> ual..taArel tattM:,: /wMan. <br /> •• :Mduos.Mction.(ak may an ....0 uugtM toorm i. <br /> d tM 1.p dux.c..».t,.y um.. <br /> +w.rk. .w.ow v.mt.wa 1 <br /> +.riuswGa <br /> EaMnewen ta.u4C...u..n. <br /> 104"UT..N <br /> ..iva.tl taY aema4Wx <br /> f <br /> iM..nt.rwt.•anh+s.es - <br /> Figure 2-Screenshot of the SiteFX Data Management System <br /> 2. Discrete Monitoring <br /> o Water quality monitoring will continue in partnership with ISWS approximately bi-weekly at the three <br /> stations established in late 2019. Locations include,(i)Sangamon River IL 32,(ii)Friends Creek and(iii) <br /> Big/Long Creek. Storm-event sampling will target 2-3 storm events during phase III.The City is setup <br /> to perform laboratory analysis on the storm-event samples. The ISWS lab analyzes the bi-weekly <br /> samples. <br /> 3. Continuous Monitoring <br /> o Phase III will include the final commissioning and commencement of the automatic monitoring station <br /> on the Sangamon River at the IL 32 bridge. This is planned in partnership wlth National Great Rivers <br /> Research and Education Center (NGRREC) and includes river floe lstage, nitrate, turbidity, <br /> temperature/conductivity, dissolved oxygen and dissolved organic matter. The monitoring sensors, <br /> telemetry and solar power system was purchased under phase II and installation is planned in October <br /> 2021. <br /> o BMP Monitoring sites <br /> ■ DeWitt Well Field — Baseline monitoring to characterize stormVvater and drainage tile flows <br /> and sediment and nutrient concentrations. <br /> • Bluffs Ravine (BMP102) — Baseline monitoring of bank erosion will continue, as well as <br /> collection of stormwater samples for sediment and nutrient analysis when feasible. <br /> o On behalf of the City, Northwater will coordinate with NGGREC in the maintenance and operation of <br /> the system to minimize downtime. Data will be regularly checked with QUA/CC procedures to make <br /> sure the station and sensors are in in working order and data quality is satisfactory. <br />