A project funded by the Southwest Florida Management District and St. Petersburg will improve the quality of the water entering Lake Maggoire.
The project will expand on the city’s alum injection system at the16th Street South outfall. Alum is a chemical agent that promotes the formation of large particle aggregates, or floc. The floc is made up of aluminum hydroxide and absorbed constituents of the stormwater. The floc precipitates out of solution, removing a variety of pollutants from the storm water.
The goal of this project is to enhance and enlarge the existing alum injection system to provide additional treatment. As part of this project, a sediment sump in the area of the outfall discharge will be constructed to remove the flocculants from the alum injection system prior to discharging into Lake Maggiore, which is currently being dredged as part of an overall lake restoration effort in cooperation with the District. The existing alum injection system will be enlarged with additional pumps and an alum storage tank, if required. Instrumentation and controls will also be included.
The city is responsible for all phases of the project, design, permitting and construction, as well as hiring consultants and contractors.
The project is estimated to cost up to $240,000. Funding will be divided between the Pinellas Anclote River Basin Board contributing $120,000 and St. Petersburg contributing $120,000.