Book 1 - City of St. Petersburg

BASIS OF DESIGN BOOK 1
3 GENERAL PLANNING CRITERIA
PERMITTING AND
DEMOLITION (continued)
During construction, a detailed stormwater management plan
will be implemented incorporating best practices including silt
fencing and filter media for storm drains for maintaining quality
of the storm water effluent reaching the bay.
Water Dependent Use
The existing Pier includes retail spaces for souvenir shops, bait
and tackle, clothing, and restaurants. Most of the existing retail
will be relocated from the Pier to the landside. Enclosed spaces
remaining on the Pier are water dependent uses including food
service areas for visitors, restrooms, elevators and utility rooms,
and management service offices for the marina.
Mitigation
The new Pier footprint and design features result in a net
environmental benefit. Environmental benefits include reduced
pollutant loading from vehicles by eliminating passenger vehicle
access on the new Pier, reduced overwater footprint to reduce
bay bottom shading including 75% reducing in shading in
seagrass habitat areas, and a reduced number of piles impacting
the bay bottom. The new Pier has approximately 1/3 the number
of support piles compared to the existing Pier. The shoreline
revetment at the Albert Whitted Airport stabilizes the existing
shoreline/seawall, does not impact existing seagrass areas, and
will reduce sediment runoff from the upland during storm events.
Marina Environmental Considerations
The existing Pier boat slips support docking of up to 24 transient
boats. The ERP application included a 24 slip transient Marina.
The proposed Pier now includes a non-motorized Blue Ways
marina, further reducing the potential pollutant loading and
improving the net benefit to the environment. If the final
design maintains the non-motorized marina, the reduction in
the environmental impact will not require a modification to the
permit. The marina floating docks will be designed with wave
attenuation to provide protection from the north, west, and
south directions.
Analysis of marina flushing shows that tidal circulation in the
proposed transient marina reduces a conservative tracer to less
than 10% residual concentration in 0.17 to 0.45 days, meeting the
state guideline of 10% residual concentration after 96 hours.
Underwater Feature Environmental Considerations
The planned Underwater Feature, located in 12 to 14-ft. water
depths, consists of concrete reef structures mounted to the top
of piles. The reef structures are located in the intertidal zone and
are intended to provide habitat for fish and other sea life. The
Underwater Feature offers potential educational opportunities
including educational signs and a small amphitheater for docent
or teacher presentations.
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THE NEW ST. PETERSBURG PIER