Erosion and sediment control measures installed per the Stormwater Pollution Prevention Plan (SWPPP). Inspection frequency: weekly and within 24 hours of each rainfall event ≥0.5 inches. Silt fence: installed on contour, maximum slope length 100 ft. Inlet protection on all active storm drain inlets. Stabilized construction entrance: minimum 50 ft length, 12 inches thickness of aggregate. Disturbed areas stabilized within 14 days of final grading per NPDES permit.
References: AASHTO current edition, OH Standard Specifications, FHWA Technical Advisories, and applicable federal regulations (23 CFR). Contractors shall maintain current copies of all referenced standards on the project site.
Source: ODOT Construction Manual, 2024 Edition. Pages 23–24 of 29.