Resolution 123-1979
RESOLUTION {,I: l23-l979
vlliEREAS, the BOARD OF COUNTY COMMISSIONERS OF MONROE COUNTY,
FLORIDA, approved an application for Barbara Brewster on June 5, 1979,
for the construction of a Seawall and Backfilling on Lot 13,
Block 11, of Sombrero Properties, and
WHEREAS, Section 253.124, Florida Statutes, requires that a
Biological Assessment be read into the records, now therefore
BE IT RESOLVED that the following Biological Assessment be
read and made a part of the Minutes of the County Commissioners
Meeting.
To construct a vertical concrete bulkhead 100' long that will
connect to an existing bulkhead on the east property line. This
tie-in will place the bulkhead several feet out from MHW and about
60 cubic yards of backfill will be placed behind the seawall
waterward of MHW. The wall will have a 4' wide concrete cap and will
be tied back by concrete deadmen. The face of the wall will be
concrete sheet pile.
The applicant also proposed to dredge an area immediately out
from the proposed bulkhead, 100' long x 20' wide to -4' MLW. Spoil
would be deposited on the uplands.
A line of riprap, approximately 16" high x 3' wide would be
placed at the toe of the bulkhead.
The project site is located on Boot Key Harbor on the Atlantic
side of Vaca Key. This harbor is much traveled by recreational and
commercial vessels and connects via several waterways to the Atlantic.
It has a marked navigable channel and has some undisturbed mangrove
shorelines and shallow flats. The adjacent uplands arehigh, probably
old fill areas, and contain in the interior a golf course and high
density dwellings along nearby shoreline areas. The small condominium
to the east has a bulkhead with dredged area in front and to the west
is a presently vacant lot and then another condominium with bulkhead
and dredged area.
The project site is composed of high upland with grasses and
Austrailian pines (Casuarina), a narrow transitional zone, a sloping,
eroded rubble shoreline and a gradually sloping intertidal and
subtidal area just offshore. A depth of about -4' MLW is reached
about 20 - 25' out from J1HW. There are a few red (Rhizophora mangle)
and black (Avicennia germinans) mangroves along with buttonwoods
(Conocarpus erecta) on the narrow transitional area. Subtidal
vegetation is mainly lithophytic algae (Halimeda) and some turtle
grass (Thalassia testudinum). Out past 20 - 25' from shore the bottom
drops to about -4' to -6' MLW and deeper into part of the navigational
channel of the harbor.
Continuation of the bulkhead line from the east will have
minimal impact on intertidal and shoreline communities. The dredging,
as proposed, would result in the elimination and disruption of about
1,500 - 2,000 square feet of subtidal benthic habitat. If dredged
only to -4' MLW, this community could recover to some level especially
if enough riprap is used at the toe of the bulkhead for wave energy
dispersion.
BOOK
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PAGE t)'~S
APPRO\;'ED ON
2Z-
BE IT FURTHER RESOLVED, that the County Commission of the
County of MONROE, Florida, hereby approves the Biological Assessement,
read at their Regular Meeting held this
5th
day of June
,1979.
BOARD OF COUNTY COMMISSIONERS
BY MONRO(ffia:A
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