R2017-53 Contract with Entler Excavating for Nelson Park Neighborhood Combined Sewer Project CP 2012-22

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I. The following is a description of soil disturbing activities by stages, their locations, and their erosive factors ' (e.g. steepness of slopes, length of slopes, etc): Trenching to install new storm sewer, see plans. ' J. See the erosion control plans and/or drainage plans for this contract for information regarding drainage patterns, approximate slopes anticipated before and after major grading activities, locations where vehicles enter or exit the site and controls to prevent offsite sediment tracking (to be added after contractor identifies locations), areas of soil disturbance, the location of major structural and non-structural controls identified in the plan, the location of areas where stabilization practices are expected to occur, surface waters (including wetlands) and locations where storm water is discharged to surface water including wetlands. K. Identify who owns the drainage system (municipality or agency)this project will drain into: City of Decatur, Decatur Park District L The following is a list of General NPDES ILR40 permittees within whose reporting jurisdiction this project is located. ' N/A ' M. The following is a list of receiving water(s) and the ultimate receiving water(s) for this site. The location of the receiving waters can be found on the plans: Lake Decatur N. Describe areas of the site that are to be protected or remain undisturbed. These areas may include steep slopes, highly erodible soils, streams, stream buffers, specimen trees, natural vegetation, nature preserves, etc. ' Areas outside the construction limits of the work shall not be disturbed. O. The following sensitive environmental resources are associated with this project, and may have the potential to be impacted by the proposed development: ❑ Floodplain ❑ Wetland Riparian ❑ Threatened and Endangered Species ' ❑ Historic Preservation ® 303(d) Listed receiving waters for suspended solids, turbidity, or siltation ❑ Receiving waters with Total Maximum Daily Load (TMDL)for sediment,total suspended solids,turbidity or siltation ❑ Applicable Federal,Tribal, State or Local Programs ❑ Other 1. 303(d) Listed receiving waters (fill out this section if checked above): a. The name(s)of the listed water body, and identification of all pollutants causing impairment: LLake Decatur: chlordane, mercury, polychlorinated biphenyls b. Provide a description of how erosion and sediment control practices will prevent a discharge of ' sediment resulting from a storm event equal to or greater than a twenty-five (25) year, twenty-four(24) hour rainfall event: Separation of combined sewer system to stand alone storm sewer using new storm sewer pipe runs. ' c. Provide a description of the location(s) of direct discharge from the project site to the 303(d) water body: Reconfiguration of outlet headwall from existing storm sewer outletting to Lake Decatur south of Nelson Park parking lot at Lake Shore Drive. Page 2