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• ' 4 <br /> PROJECT OBJECTIVES <br /> The main goal of this project is to continue to assist the City of Decatur comply with the <br /> Letter of Commitment(LOC)agreed upon with the Illinois Environmental Protection Agency(IEPA) <br /> by continuing to monitor the watershed for nitrates from May 1995 through April 1996. To <br /> accomplish this goal,we outline the following objectives. <br /> 1. Continue to maintain and operate the watershed monitoring network at a <br /> modifiec� level. <br /> Table 1 lists the present monitoring stations and the sampling schedule proposed. The <br /> Illinois State Water Survey will maintain the continuous stream recording equipment and the d_ata <br /> records will be processed to determine continuous stream flows. Nitrate-N will continue to be <br /> sampled at all sites, however, TKN and ammonium will be removed from the sampling routine. All <br /> stations will be visited weekly, however, storm event sampling will discontinue. This modified <br /> sampling schedule will still allow for the monitoring of nitrates being contributed by the watershed. <br /> Table 1. Monitoring Stations and Sampling Frequency in the Lake Decatur Watershed. <br /> Drainage <br /> Station area Sampling <br /> number Location (sq mi) Frequency* <br /> 101 LongBig Creek at�vin Bridge Road 46.2 W <br /> 102 Friends Creek at Rte 48 near Argenta 111.9 W <br /> 103 Goose Creek near DeLand 45.1 W <br /> 104 Camp Creek near White Heath 47.2 W <br /> 105 Sangamon River near Mahomet 368.2 W <br /> 106 Big Ditch near Fisher 38.2 W <br /> 111 Sangamon River at Monticello 543.4 W <br /> 112 Sangamon River at Fisher 245.6 W <br /> � *W-weekly sampling visits and collect only nitrate samples <br /> 2. Process and analyze third year of data collection. <br /> The third year of data will be processed for water discharge (flow), nitrate concentrations, <br /> i and nitrate loading for all eight stations in the monitoring network. All three years will be <br /> appended and analyzed to determine any changes in flow and nitrates over time. <br /> 3. Assist in public education. Assist the City of Decatur in public education by <br /> presenting the results of the data collection efforts at public and community meetings throughout <br /> the watershed. <br /> 4. Assist with proposal development. Assist the City of Decatur in developing <br /> proposals to state and federal agencies for implementing long-term management praetices that <br /> could reduce nitrate levels in the Lake Decatur watershed. <br /> 3 <br />