Stormwater runoff from construction activities can have a significant impact on water quality. As stormwater flows over a construction site, it can pick up pollutants like sediment, debris, and chemicals and transport these to a nearby storm sewer system or directly to a river, lake, or coastal waterways. Polluted stormwater runoff can harm or kill fish and other wildlife. Sedimentation can destroy aquatic habitat, and high volumes of runoff can cause stream bank erosion. Debris can clog waterways and potentially reach our bays, where it can kill estuarine wildlife and impact habitat.
Best Management Practices for construction site pollution control fall into three general categories:
The operator of a regulated construction site must obtain an NPDES stormwater permit and implement a Stormwater Pollution Prevention Plan to properly manage runoff so that erosion and sedimentation are minimized. This Generic Permit for Stormwater Discharge From Large and Small Construction Activities is issued by the Florida Department of Environmental Protection (FDEP), under the authority of Section 403.0885, Florida Statutes (F.S.), which is the provision authorizing the State to implement the NPDES program. A brochure describing the FDEP Stormwater Permitting Program for Construction Activity and other pertinent information may be found here.
The Polk County Land Development Division reviews plans for proposed development to ensure that the proposed actions are compliant with the county's infrastructure construction standards and its land development ordinance, which requires all new developments to meet the 100-year storm event criteria and ensures that the runoff rate from new developments is less than or equal to the pre-development rate.
Specific county standards are contained in Chapter 7 Section 740 of the Polk County Land Development Code (LDC).