Resolution 81-16652 A
RESOLUTION NO. 81-16652
A RESOLUTION APPROVING ISSUANCE OF PERMIT FOR
FIFTH PHASE OF DADE COUNTY BEACH EROSION CONTROL
AND HURRICANE PROTECTION PROJECT, MP-54 .
WHEREAS, the Metropolitan Dade County Department of
Environmental Resources Management has applied to the State of
Florida Department of Environmental Regulation for a permit for
Phase 5 of the Beach Restoration Project, and
WHEREAS, before approval can be given by the State of
Florida for said permit, approval must be obtained from the City of
Miami Beach pursuant to Section 253 . 124 , Florida Statutes, and
WHEREAS, a Biological Survey Report prepared by the State
of Florida, Department of Environmental Regulation is attached here-
to and made a part hereof , the contents of which are familiar to the
City Commission of the City of Miami Beach.
NOW, THEREFORE, BE IT DULY RESOLVED BY THE CITY COMMISSION
OF THE CITY OF MIAMI BEACH, FLORIDA, that approval is hereby granted
pursuant to Section 253 . 124 , Florida Statutes, for the Fifth Phase
of the Dade County Beach Erosion Control and Hurricane Protection
Project, MP-54 .
PASSED and ADOPTED this 6th day of May , 1981.
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ATTEST:
°.1&I-Ptlt- estf --liZa._v
City Clerk
APPROVED
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a y 8, 1981
Mr. Ed Swakon, P. E.
Metropolitan Dade County
Department of Environmental Resources
Management
909 S. E. 1st Avenue, Room 402
Miami, Florida 33131
SUBJECT: Beach Nourishment Project, Phase V,
N2-54
Dear Mr. Swakon:
Enclosed are two certified copies o.E Resolution No. 81-l6652
approving the Fifth Phase of the Dade County Beach Erosion
Control and Hurricane Protection Project .
Kindly advise if additional information is required.
Very truly yours,
Frankymonin, P.E.
• Director of Public Works
PA:pk
Ends.
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APR
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15 1981
DEPARTMENT OF ENVIRONMENTAL REGULATION
PERMIT APPLICATION APPRAISAL DIV. ENVIRONMENTAL
PERMITTING
File No. : DF 13-37865 County: Dade Date : 4/14/81
Applicant Name: Dade County Board of Count�ommissioners
Address : 909 S.E. 1st Avenue, Room 494, Miami , Florida
Agent (if' applicable) : Dade Count Environmental Resources Management .
1 •
Address : 909 S.E. 1st Avenue, Room 494 , Miami, Florida
Location of project: Section (s) 34 Township 53 Range42
Section s) 3, 10 Township54 Range 42 Cg
Local Reference : Miami Beach from Lincoln Road to Government Cut
Water Body: Atlantic Ocean
Water Classification of Project Area: III Adjacent Waters : III
Aquatic Preserve : NO
Outstanding Florida Waters : NO
On site inspection by: Richard Walesky
Date of Inspection: 11/25&_ 12/10/80 Original Application: YesX No
Revised Application: Yes No Date : Date of 2nd Insp.
•
Biolo.ical and Water Qualit Assessment
A. Description of proposed project and construction techniques.
Quantify area of project which extends into waters of the state
(including the submerged lands of those waters and the transi-
tional zone of the submerged land) as defined in Section 17-4 . 02
and Section 17-4 . 28 , Florida Administrative Code .
B. Biophysical features of general area. Include comments concerning
. extent of dev,alopment of adjoining properties as well as relevant
historical facts about the area.
C. Biophysical features of specific project site and spoil site if
applicable . Include identification of bottom types and any
relevant historical facts about the area of the project.
D. Potential impact of project on biological resources and water
quality. Address long-term impact as well as immediate impact
for a l l aspects of the project.
E. Suggestions , where appropriate , for modifications that may reduce
or minimize the potential impact of project.
PERM 16-10 (Rev. 6/79)
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. Dade County Board of County Commissioners DF 13-37865
. A. The applicant proposes to dredge 2, 700, 000 cubicY ards of sand
from off shore borrow areas in order to provide acceptable mate-
rial for 1. 8 miles of beach restoration between Lincoln Road
and Government Cut, Miami Beach. This project represents the
fifth and final phase of a 9. 3 mile beach restoration effort
between Bakers Haulover Inlet on the north and Government Cut
on the south.
B. This general area of Miami Beach is highly developed. Numerous
• high rise hotels, motels, condominiums and apartment complexes
line the Atlantic Ocean along this 9. 3 miles of shoreline. A
300± foot wide beach has been previously restored north of .
Lincoln Road during earlier phases of this project.
The general area offshore, extending 21 miles east, consists of
three parallel coral reefs located in water depths ranging from
25 - 80 feet. These fringing reefs consist of hard and soft
corals, sedentary bryozoans and poriferans, molluscs , polychaetes,
, crustaceans and tunicates as well as a large and diverse community
{ composed of recreational and commercially valuable fish species.
'Areas between the first and second reefs and between the second and
third reefs have been previously used as borrow areas excavated
during earlier beach restoration efforts.
C. On-site inspections were completed on November 25, 1980 and
December 10, 1980 with staff biologists from Dade County Environ-
mental Resources Management (DERM) . The purpose of the joint
inspection was to investigate adverse impact to DERM reef
monitoring stations that were set—up adjacent to borrow areas
used during Phase III and IV dredging, approximately 60 days
earlier. These stations are also adjacent to proposed borrow
areas 1 -- 7 in the present application. Figure 1. shows the
location of DERM monitoring stations (marked A-G) , the borrow
areas used during Phase III and IV and the proposed borrow area
r for Phase V. .
The following is a description of three stations observed and the
apparent impact resulting from dredging during Phase III and IV,
completed approximately 60 days earlier.
Station D - Station D was located on the third reef
approximately one mile south of the southern extent
of the borrow pit used during Phase IV. The reef was
composed of a hard bottom community dominated by
gorgonians (Sea fans) and scattered areas of hard
• coral. The invertebrate community appeared to be
relatively healthy and diverse. Several ringed
anemones (Bartholomew annulata) were observed with
their natural snapping shrimp symbionts (Alpheus
armatus) . Fish were also abundant. Paired butter-
fly fish (several species) , rock beauties and rx<,•;`
numerous mature angelfish were observed . - This a i_ :•_
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1 Dade County Board of County Commissioners DF 13-37865
• was characterized as a healthy, productive reef. <6a
Without long term observations it would be di f fi- 0,:!-:
cult to determine anysignificant icant adv- rs '
adverse impact
from siltation originat ing from borrow sites one ��
• mile to the north. Few hard corals were bleached *J.and large vase sponges were filled in by less than '� •ren
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1/8• " of silt. �3, p
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Station F - Station F, located •on the second reef Q . ele
• . immediately east of the Phase III borrow site, had
been significantly damaged/stressed by siltation.
A silt layer, 21" deep,, covered areas between adjacent
Coral heads. The cracks, crevices and holes that
j typically provide habitat for a diverse invertebrate
community on a healthy reef, were filled with white
- chaulky silt. The reef had the appearance of a
desolate area devoid of coralline algae, inverte-
t
brates and fish. A single arrow crab, often diffi-
cult to observe on a healthy reef, was easily "observed
at ten feet against a silty background.back round. The
• sedentary organisms were also severely impacted.
Numerous coral heads were totally or partially de-
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stroyed (bleached) by the siltation. Polyps that
had survived were continuing to produce mucous to
"wash" or slough off silt. accumulation. The long-
term impact of this continuing stress would be
difficult to assess .
In some areas, the top k indh' of silt had been• bound
by new growth of red algae. This single observation
provides some hope that the system is beginning to
recover.
.Station E - Station E, located on the third reef ad-
j acent to a Phase III borrow pit and immediately north
of a Phase IV borrow pit, was impacted in •a manner
similar to Station F.
- At this site an attempt to survey for mechanical damage
was made by swimming south along the inside of the third
reef adjacent to a borrow pit. A series of parallel
mechanical cuts by the cut€er head were made into the
hard- reef. These cuts were approximately 50 feet long,
6-8 feet wide and 4-5 feet deep. A total of 6 cuts
were observed along 100 yards of reef. The entire area •
observed was nearly devoid of living hard coral, sea-
fans, invertebrates and fish. Entire coral heads were
tipped over, cut in half and destroyed. The skeletal
remains (coralline exoskeleton) of sea fans were obvious
• evidence of the severity of impact resulting from the
dredging operation.
D. Based on the impact observed on Stations E and F occuring from the
dredging operations on Phase III and IV, it is certain that .i
tional adverse impact will occur as a result of Phase V dredging
As the 100 yard wide reefs adjacent to borrow areas were impacted
by the dredging operation, it is likely that additional hard
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' Dade County Board of County Commissioners DF 13-37865
bottom reef adjacent to. the proposed borrow areas will be s imi--
lari ly effected. Should the entire hard bottom reef (100 yards
wide) on each side of the 3. 2 linear miles of borrow pits be
impacted in a manner similar to Stations E and F, one can
expect a significant adverse impact to occur on the 232± acres
of adjacent coral reef.
•
9C. _ G� �cc-• Date y.
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UK1ti11VAL1411
RESOLUTION NO. 81-16652
(Approving Issuance of a Permit for the
5th Phase of the Dade GQunty Beach Erosion
Control and Hurrican Protection Project,
MP-54)
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