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Home My WebLink AboutC010.0.15 - Pollutant SourcesPage 15 Section C 1. Description of Pollutants and Their Sources Associated with the Proposed Land Use The land use will not be changed by the proposed project. Post-construction pollutants associated with roadways are typically grit from the natural wear of the road surface and/or deposited by vehicles, rubber fragments from tires, brake dust from vehicles, litter, salt from de-icing operations, and oil and fuel spills/leaks from vehicles. 2. Description of Proposed Post-Construction Storm Water Quality Measures Permanent seed, sodding, and erosion control blankets are expected to provide permanent stabilization. Riprap drainage turnouts will provide stability against concentrated flow, which will cause erosion without this protection. Stormwater Quality Devices shall be installed prior to the direct outlet to natural waterways. A SWQCP is to be submitted by the Contractor to the Engineer per INDOT Standard Specifications section 205. See Appendix E for more details. 3. Plan details for each stormwater measure The erosion control plan set shows the locations for riprap check dams, inlet protection, silt fence and re- seeding measures (Attachment A). Measures will be installed in accordance with 2022 INDOT Standard Specifications. 4. Sequence Describing Storm Water Quality Measure Implementation All temporary erosion and sediment control measures will be installed prior to any earthwork activities. Temporary erosion and sediment control measures will be removed following completion of the final approach pavement tie-in. Permanent seed, mulch, and erosion control blankets will provide site stabilization for most of the project. 5. Maintenance guidelines for proposed post-construction stormwater measures The contractor will be responsible for achieving stabilization required to file a Notice of Termination (NOT). After the NOT is approved, Clay Township, Hamilton County will be responsible for ensuring the continual growth seed. Clay Township will also be responsible for making any necessary repairs to the riprap at the drainage turnouts. Finally, Clay Township, Hamilton County will be responsible for maintenance activities such as mowing and litter removal. 6. Entity that will be responsible for operation and maintenance of the post-construction stormwater measures After the NOT is approved, the maintenance of this facility will be the responsibility of Hamilton County- Clay Township.