The FSA Educational Foundation has engaged in three research projects thus far, including two quantifying the load reduction value of routine maintenance activities performed by MS4 permit holders – the MS4 Assessment Projects.

MS4 Assessment Projects
The Environmental Engineering Sciences Department within the UF College of Engineering was engaged on two occasions to assist in quantifying the load reduction values of MS4 maintenance activities.  The projects finished in 2011 and 2019 built upon a review of research reports completed for FSAEF in 2007.

Each project sampled material collected by 12 to 14 participating MS4s widely dispersed throughout Florida.  Material from three different types of BMPs (street sweeping, catch basins, etc.) located in different areas of each jurisdiction and in three different types of land use were collected.  Samples were analyzed at the UF Environmental Engineering Sciences Department lab.

The results of the research projects are incorporated into the “FSA MS4 Load Reduction Assessment Tool” which is recognized by FDEP.  The Tool calculates the nutrient content of sediment removed during common maintenance activities.  Those results are reported by MS4 permit holders to FDEP and load reduction credits are given to the jurisdiction during the BMAP process.  An updated (2019) version of the FSA MS4 Assessment Load Reduction Tool will be posted to FDEP’s website soon; a current version may be found on the FDEP NPDES Stormwater Program’s webpage.

FSA MS4 Assessment Project III - 2019

FSA MS4 Assessment Project II - 2011

Pathogens Project

Street Sweepings Project