Why is stormwater a problem? To give some perspective, the U.S. Environmental Protection Agency indicates that over 40 percent of waters assessed by the states are too polluted for fishing or swimming. The top four impairments are pathogens, metals, nutrients and sediment. Nonpoint sources associated with stormwater account for over 40 percent of these polluted waters. Conversely, traditional point sources (i.e., wastewater treatment plants) account for only about 10 percent of these polluted or “impaired” waters. Hundreds of impaired water segments in Florida have lost their “designated use” due, in part, to stormwater pollution.
Florida’s regulatory approach recognizes that stormwater is a nonpoint source and therefore many end-of-pipe technologies are not effective. Rather, a Best Management Practice (BMP) based approach has been embraced using “presumptive criteria,” as codified in the statewide Environmental Resource Permitting (ERP) rule, Chapter 62-330, F.A.C. These BMPs include a menu of site-specific practices that generally involve retention or detention of stormwater runoff. The stormwater treatment target is removal of 80 percent of the annual average load of post development pollutants for Class III waters, and 95 percent removal for Outstanding Florida Waters. These minimum targets are codified in Chapter 62-40.432(2)(a), Florida Administrative Code. Further, Section 373.4131(3)(b), F.S., authorizes the presumptive BMP based approach.
James Landini, P.E., has utilized many BMP’s to address nonpoint source pollution, reviewed and applied for numerous permit applications from NPDES to local jurisdiction. He has modeled many projects for nutrient removal performance for TMDL compliance and performance based grants. As a former city engineer he administered the NPDES MS4 permit, designed retrofits for aging infrastructure to include water quality treatment, and co-authored ordinances protecting water resources.
Richard Musgrove, P.E., is a co-author of many of the existing stormwater rules (including 62-330, F.A.C.) and is well versed in past, present and future rules governing nonpoint sources. He is also very familiar with the BMPs utilized to address nonpoint source pollution, and the administrative and technical side of permitting. His long-term design and evaluation experience gives him perspectives that range from ERP & NPDES-stormwater regulation; the relationship of TMDLs and BMAPs to stormwater systems. As a former consultant, he is inclined toward research based common-sense solutions for nutrient and pollutant removal.
Contact James or Richard at:
Engineering, Hydrology and Geology Program 2600 Blair Stone Road, MS 3595 Tallahassee, FL 32399 850-245-8035 or 8397
March 25, 2020 - 11:02am
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The Florida Department of Environmental Protection is the state’s lead agency for environmental management and stewardship – protecting our air, water and land. The vision of the Florida Department of Environmental Protection is to create strong community partnerships, safeguard Florida’s natural resources and enhance its ecosystems.