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6 of 12 <br /> Supplemental Agreement No. 1 <br />i. Using existing and available GIS information, show vicinity map, legal <br />description of project site, hydrologic 14-digit unit code, location of all <br />wetlands, lakes, and water courses in vicinity of project. Identify existing <br />vegetation, drainage patterns, adjacent land use, potential discharges to <br />groundwater, and ultimate receiving waters on the project site. <br />ii. Provide maps showing the Floodplains, Floodways, and Floodway Fringes, if <br />applicable. Note any State or Federal water quality permits (i.e. DNR, Army <br />Corps, etc.) required. <br />iii. Determine soil types within the project area using the NRCS soil map – no <br />actual soil samples will be performed. <br />iv. Calculate Pre-Construction and Post Construction Estimate of Peak Discharge. <br />v. Develop sequence describing storm water quality measure implementation <br />relative to land disturbing activities. <br />vi. Document elements of this SWPPP where applicable within the Report, <br />including but not limited to, sediment control, runoff control, inlet protection, <br />pollutant sources, Best Management Practice (BMP) implementation, and <br />temporary and final stabilization methods. <br />b. Prepare Storm Water Pollution Prevention Plan (SWPPP). <br />i. Base drawings should indicate the following: <br />• Plat or Survey of existing project site. <br />• Location and approximate boundaries of all disturbed areas with <br />construction limits clearly shown. <br />• Location of all lots and proposed site improvements. <br />• Existing site topography at an interval appropriate to show detailed <br />drainage patterns. <br />• Proposed final site topography at an interval appropriate to show detailed <br />drainage patterns. <br />• Location, size and dimensions of proposed storm water system. <br />• Pre-Construction and Post Construction Infiltration Rates. <br />• Location, size and dimensions of proposed Best Management Practices. <br />• Location of all environmentally sensitive areas on the site (i.e. wetlands) <br />• Specific points where stormwater will leave the site. <br />ii. The SWPPP will show the location, dimensions, and construction details for all <br />erosion control measures required, including but not limited to, temporary and <br />permanent erosion control measures, water quality measures, perimeter <br />control and stable construction entrances. It will also delineate the disturbed <br />and preserved areas and proposed locations of soil stockpiles and borrow areas <br />and other staging elements, as required. <br />c. Submit Report and SWPPP to the local reviewing agency for 30-day review period. <br />d. Monitor the approval process and provide customary additional information that <br />may be required to secure permit approval. <br />e. Prepare and publish the Public Notice. <br />f. Complete draft application via the IDEM Regulatory ePortal, including upload of <br />proof of publication and local review agency approval forms. Provide completed <br />State Form 56679 Construction Stormwater Signed Certification for Owner <br />signature. <br />g. Submit final application to IDEM Regulatory ePortal along with $100 IDEM permit <br />fee. Submit State Form 56679 via mail no later than 48 hours prior to start of <br />construction.