HomeMy WebLinkAbout2005 CorrespondenceProject PA#4: Periwinkle Drive Stormwater Improvements
Description:
This project is located in the south central area of the City of Sebastian and targets a
minimal treatment 53 -acre watershed with a direct outfall to the Sebastian River, a
tributary of the Indian River Lagoon. A three (3) acre best management practice wet
detention stormwater pond is proposed for construction on an existing City owned parcel.
This parcel is located between Periwinkle Drive, Seashore Avenue and Ocean Breeze
Street. The wet detention pond will reduce the pollutant loading, increase sedimentation
and equalize stormwater flow surges. A new road crossing culver will also be installed
under Ocean Breeze Street to alleviate localized flooding in an area with marginal B/D
soils.
The pond should provide removal efficiencies of 80%-90% for TSS, 40%-50%0 of Total
Phosphorus, and 30%-40% of Total Nitrogen.
The current conceptual budget estimate for this project is $500,000, including design and
construction. This number may change based on final design specifications and market
conditions.
Problem Area No, 4
Periwinkle Drive Stormwater Improvements