Resolution 273-1983
RESOLUTION NO. 273
- 1983
WHEREAS, THE BOARD OF COUNTY CO~WISSIONERS OF MONROE COUNTY,
FLORIDA, has received application from ROMAN BUCH
and
WHEREAS, in compliance with State Statute, it is necessary as part
of the permitting procedure to read the following Biological Assessment
into the Record, as follows:
The applicant wishes to protect his property from erosion and
obtain enlarged boat mooring facilities. A vertical concrete sea-
wall will be erected to provide the desired erosion protection.
The seawall will be built in two sections, one measuring 120 ft.
and the other measuring 30 ft. long. An estimated 120 yd3 of
backfill will be placed in 0.017 ac of submergent and transitional
wetlands behind the proposed seawall. Approximately two-thirds
of the backfill will be placed landward of the mean high water (MHW)
contour line, and the remaining third will be waterward. Riprap
will be installed at the toe of the seawall.
Enlarged boat mooring facilities will be provided by building
a cantilevered concrete dock as the seawall cap. The seawall
cap will measure five (5) feet wide with three (3) feet of the
width extending out over water (450 ft2 over the water area).
A curb on the landward edge of the seawall will tend to prevent
stormwater from running directly over the dock into State waters.
As mentioned above, the seawall and dock will be built out of
reinforced concrete. The backfill will consist of crushed rock
brought to the site over upland routes. The seawall will tie
into existing adjacent seawalls. No backfill will be placed
before the seawall is built, in order to reduce turbidity.
Proposed techniques for maintaining water quality during the
construction of the seawall, are not included in the application.
The project site is located on the southwestern end of Plantation
Key in the Venetian Shores subdivision. Venetian Shores is a
water oriented, primarily residential, subdivision. A series of
eleven dead-end canals, shoreline channels and a boat basin,
provide water access for the owners of virtually every lot in the
subdivision. The subdivision was apparently created over a
number of years by dredging canals into an area composed primarily
of wetlands and using the spoil to create uplands.
The project site is located at the open water end of one of the
Venetian Shores canals. The surrounding neighborhood is developed
with a variety of marine,construction projects intluding_seawall~,
revetments, docks, boat slips and dredged areas.
Bordering the east side of the project site is a lot developed
with a single family residence, a seawall and boat slip. A
commercial boat was observed moored at the seawall. The north
side of the project site is partially bordered by a lot developed
with a private residence. Two sides of this residence are formed by
seawalled shorelines. The remainder of the north side of the
project site is bordered by the end of Leoni Drive.
One of the Venetian Shores canals borders the south side of the
project site. The canal is approximately 100 ft. wide at the
project site.
Snake Creek forms the western boundary of the project site. The
creek is a natural connection between the Atlantic Ocean to the
south and Florida Bay to the north. The waters of the Venetian
Shores Canals and Snake Creek are designated as Class III waters
(Chapters 17-3.081 and 17-3.161, Florida Administrative Code).
The old fixed low bridge, where the Overseas Highway crosses
Resolution No.
Page Two
Snake Creek has recently been replaced by a draw bridge. The
resulting increase in boat traffic has caused several Snake
Creek property owners to compalin of wake induced erosion.
The applicant's property consists of an irregularly shaped 100+
ft. by 110+ ft. (1/4 ac) residential lot. A two story residence
is located-on the lot. Much of the lot around the house is covered
bv a layer of pea gravel. The substrate under the pea gravel and
exposed in other sreas, is a mixture of crushed rock, sand and marl.
Most of the lot is at an elevation estimated to be 5 ft. above ~lliW.
Vegetation in the upland areas of the lot consists of a variety of
ornamental plantings.
A 40 ft. section of the canal front shoreline of the project site
has already been developed with a seawall and dock very similar
in design to the one proposed in the current application. There
are two sections of unseawalled shoreline on the canal side of
the project site. The two sections are located at either end of
the section of seawall (the seawall does not tie into the property
line as indicated in the application plans).
In the two unseawalled canal front areas, the shoreline is charac-
terized by a steep fill bank, dropping from the elevation of the
upland portion of the lot to approximately MHW. A shallow 5+ ft.
wide shelf is found at the base of the bank. Beyond the sharlow
shelf, an escarpment drops to the floor of the box-cut canal.
Vegetation on the face of the canal front bank is dominated by a
mixture of buttonwood (Conocarpus erectus), sea grape (Coccoloba
uvifera) and sea daisy (Borricnia sp.). At the base of the shore-
line bank, moderate size-red mangrove (Rhizophora mangle) and
white mangrove (Languncularia racemosa)trees dominate the
vegetation. A few small patches of turtlegrass (Thalassia
testudinum) are found on the shallow shelf in the canal.
The topography of the Snake Creek shoreline is similar to that
on the canal front shoreline. The primary differences are a
somewhat shallower slope on the bank face and generally wider
shallow shelf area and the presence of a boulder revetment of
the base of the shoreline bank.
Vegetation on the shoreline bank 1S once again dominated by
buttonwood, seagrape and sea daisy. The base of the bank is
relatively devoid of large vegetation, this area being occupied
by the boulder revetment. The boulders are covered by a rich
assemblage of algae including Batophora sp., Laurencia sp.,
Halimeda sp. and Acetabularia sp.. A faunal assemblage with
zebra periwinkles (Littorina ziczac) fuzzy chitons (Acanthopleura
zranulata) and turkey wings (Arca zebra) making up the more
v1sually obvious elements is found on the rocks.
In the shallow shelf area the macroflora was observed to include
Udotea sp., Penicillus sp. and turtlegrass in areas covered by
sed1ments. Scattered rocks in the shelf area displayed a flora
similar to that of the revetment. Observed elements of the
fauna in the shelf area included starlet coral (Siderastrea
radians), sergeant major (Abudefduf saxatilis) and snappers
(Lutjanus spp.). -
The shoreline on both the canal and creek sides of
site did not appear to be eroding with any speed.
of the vegetation found in these areas is evidence
stability of the shoreline.
the project
The presence
of the relative
Construction related activities are expected to cause elevated
levels of turbidity, dissolved organic compounds and particulate
organic compounds in the waters surrounding the project site.
Proper use of turbidity control devices should be able to control
this impact within acceptable levels. The proposed methods for
turbidity control do not appear to be adequate to the task. Without
Resolution No.
Page Three
adequate controls, the waters surrounding the site are
likely to be degraded below State Class III water quality
standards.
The proposed construction will result in the permanent elimination
of all but a small section of the shoreline wetlands at the
project site. With the loss of the wetlands will also be the
loss of their functions of pollution filtration, primary produc-
tion, habitat and sediment stabilization. In the case of the
project site, these functions are relatively well represented.
BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS OF MONROE
COUNTY, FLORIDA, that the above Biological Assessment has been read
into the record and duly considered pursuant to Florida Statute 253.124
by the Board of County Commissioners of Monroe County, Florida, this
~day of c9 ~1-11~~ , 19 ~:; at a regularly scheduled
meeting.
BOARD OF COUNTY COMMISSIONERS OF
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(Seal)
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Attest :IUUrn ... .u~.&Il.l \lL.UU\
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d" ~rk
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Lucien C. Proby,
County Attorney
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(305) 2944641
Lucien C. Proby,
County Attorney
310 Fleming Street
Key West, Florida 33040
\
BOARD OF COUNTY COMMISSIONERS
Wilhelmina Harvey, District 1
Ed Swift, District 2
MA YOR Jerry Hernandez, District 3
Alison Fahrer, District 4
Mayor Pro tem Ken Sorensen, District 5
I, the undersigned, do hereby attest that all data
and information is complete in the package of the applicant
as follows:
1.
County Biologist Report
2.
Resolution (Roman Buch)
3.
Permit
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4.
Application for Permit (Seawall & Fill)
5.
Site Plan
6.
Location Map
7.
DER Assessment
Date/tJ-~-;-3
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By 4. G?~
Ull'/Y'i r.~::i [','d, C)jWESl'()~!Dl;01CF:
DJ,'rr:
September 27, 1983
SUB,JECT: Buch: Proposed _se,~v.r_all_'=:r-l~___~_~_l~_________,__________________________q
Jeff Doyle, Director
'fO:
DEl"I' :
____B u i ~~~ ng, P l_<:t!2.I2.~l!_~n _~___Z 0 ~n g
. Ann.ette F. Nielsey., Env. Biologist DEPT: Planning & Zoning
FROM. ~~CL?~~~~------ --------- -,- -- ---------.-- ----
Legal: Lot 16, Block 7, Venetian Shores Subdivision, Plantation Key
Zoning: RU-l
Introduction:
This application to construct a seawall and place 40 c.y. of fill waterward of
mean high water should be reviewed by the Board of County Commissioners pur-
suant to Section 19-111(5).
Project and Site Description:
The applicant proposes to construct a 150 foot seawall on a corner lot. The
west 120' property line abutts Snake Creek, a natural waterway and the east
property line is on a man-made canal. An existing seawall runs almost the
entire length of this side. A 30 foot section of wall would be required to tie
into the proposed wall on Snake Creek.
The proposed bulkhead would be back filled with 80 c.y. of crushed rock, with
40 c.y. being placed waterward of M.H.W.
Site visit was conducted on July 20, 1983. The water in Snake Creek and the
mouth of the canal was extremely turbid due to boat wakes washing against the
shoreline of the property. Eroded fill along the Snake Creek property line has
created a shelf area that is colonized by algae and turtlegrass. The canal
side exhibits similar flora and fauna although the canal sides are much steeper.
There are two mangroves (1 white, 1 red) at the end of the existing seawall
on the canal side. Buttonwood, sea daisy and a few sea grape grow on the lot
embankment. The attached F.D.E.R. biological report addresses this proposed
project in greater detail.
Evaluation:
The proposed seawall would eliminate or disrupt approximately .02X acre of
submerged wetlands. It would also eliminate a source of particulate pollution
in the form of eroded soil and storm water runoff that drains from the subject
property into the adjoining waters. The proposed seawall would help stabilize
this shoreline.
Recommendation:
Conditional Approval: Turbidity curtains should be used throughout construction.
3uch: Proposed Seawall and Fill
Page 2
other Observations:
A.C.O.E. / F.D.E.R. permits may be required.
Applicant has made application to A.C.O.E./F.D.E.R.
Attachments:
County application (1 sheet)
Site Plan (1 sheet)
F.D.E.R. Biological Appraisal(S sheets)
PERMIT
MONROE
COUNTY
~
..
PLANNING, BUILDING & ZONING DEPARTMENT
PERMIT FOR EXCAVATION, THE DEPOSIT OF
FILL, OR STRUCTURAL ACTIVITIES IN THE
WATERS OR WETLANDS OF MONROE COUNTY
PERMIT
NO,
1) Property owners name & mailing address
Roman Buch
Box 674
Libertyville, Ill. 66048
2) Date
FOR DEPARTMENT USE ONLY
July 10, 1983 Resolution No.
3) Phone number
Date:
(312) 367-6890
4) Contractor or agent's name, mailing address & phone number
Tirrell-Bruni, Inc.
Post Office Box 1268
Islamorada, Florida 33036 664-4286
5) Legal description of property:
Section
14
Key Plantation
Subdivision Venetian Shores
Township 6 1 S
Lot
16
Block
7
Range
37E
Street, road or mile marker
Leonin Drive at Snake Creek
V olume of material:
dredged/excavated
filled/ deposi ted
c.y.
waterward
of M.H.W.
c.y.
landward
ofM.H.W.
t1 0 c.y.
waterward
ofM.H.W.
c.y.
landward
ofM.H.W.
ZONING: RU-l
PURPOSE:
Cost of Permit
Estimated cost of Construction
Biologist Comments. Restrictions or Special Conditions if any: .
CONDITIONAL AP?ROVAL
Turbidity curtains should be used throughout construction.
A.C.O.E./F.D.E.R. permit may be required
Jeffrey M. Doyle, Ph.D., Director
Planning, Building and Zoning
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Roman Bucll
Box 674
Libertyville. Ill.
60048
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pht'lll' i; l.."t'l"t ifil..',lt ion
GC106A
31;:- 367-6890
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untrnctm' or ;l~:1.'11! ':> 11:1111(', r~;li I ilw :111<11'(':;:"
Tirrell-Bruni Inc.
P.O. Box 1268
Islamorada, Fl. 33036
lcgal descripticn cf propertj':
!~tullh~r '
305-664-4286
~;ectionJ 14
Township, -63--
I\mge, --.'-37'-.-
(i f-nc rc.igc)'
Vcy, Plantation
~tlhlivis ion, Venetian Shores
lot,
16
Plock,
7
Street, road or mile marker,
Leoni Drive
at Snake Creek
Zon ing ,
-RU=I- - _.~
Dcscrine the propose(l activity, method:-; of c()n~;trllcti('11 II :l~n()tlllt of m:lt~ria1
tc. be exc3v:1ted or clischugcd. nl'~;nil,c ptlrp('~;l' 5 iJ1tcmk.d use' of project.
(in cuhi<: y;ln~s),
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A~.~ cL.
FJA'
Bulkhead and backfill with 120 cubic yards of crushed
rock fill obtained from upland areas. Construct concrete
dock for mooring private boat.
drcc,~ cd I exc :wa t N1
ft n~1.j(1CP():;i 1J'd
----.---...--------
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80 c .y. '
17;nl\.;;\rd
of ~U 1.\'1.
c.y.
i.~atenv~lnl
of ~~.F .i'!.
C.Y.
Tiu1'J\.: a I'd .
of ". P. l" .
40 c.y.;'
,7atcl-I...arcl /
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)1 ume of
l::cl'ial
I Name,
address F, ::ir croe of c>nj oininf
Herb Hodson
161 West Leoni Drive
Islamorada, Fl.,33036
l'11"O)x>rty ('l\\11crs Wl-]0SC property aFronts water way.
Gill Armando
620 E. 45th St.
Hialeah, Fl. 30012
-
a) list other pennits issued (Ll1d/or apl'liec1 for, include app1icnnt's name, for tris site:
N/A
b) If application he.s heen suhnittcl1 [or this project (or onc similar) in t1'e past,
explai11 reason for new application ono r,ivc arp1ic:mt's name if different from current
app lic311t .
1 list an"rcde:'al ,-md State agenCles tbat have recelVed appllcatlms tor HiS proJect.
Florida Department of Enviromental Regulation
U.S. Army Corp of Engineers
l1~is completed application fonn will he 3CCa11p;1]11ec1 t,y t1'c
folh)\,dng, or it. \111 11 ~:C'r he 'proce:;~;('(~.
Two (2) sets of drawings, on 81~ x 11 r:1pcr, 5n()\\'in~ loc:ltion, plot plan, torvic\\' ann
cross sect ioo of propcsa I, dr~l\,n to sCll c.
I Ppp1ic~ti(Jn pro::essing fer? lIS fol10\-:s:
$75.00 f0r Jrcclgc, fill, dccLs rr any structures nHrontiw~ ll~tural \~ater brules.
$30.00 for vertical sC'::lh'alls onn1:1I1-ml1c1c l'oljcs 0f watcr.
$75.00 for any ccmbination of the ahc\'e activities per site.
';)Flication is l1('l'ch)' m:1de for :1 p('r1T1it to :l\1tl'or1:C tl:c :1ctlvitics clcscribed l'erein. I
,~rtify that I ;un famjli:lt" wit11 the in!"{I11n:ltinn cortaine(l jp tJ'is application, and to the l'cst
:f my lmO\\'lcdgc i; belief ~lK'h. infom:\tioi' is trlle, cnnlplcte (~accurate. I furtl'cr certify that
possess the nuthori ty to undcrt;l~'C t k pr<Jrn~;cd :lci iv it i C~;. I'll provisions of 1<1\"'5 lmrl
,rdin~ces governing ths trpe of \\'ork \\i 11 he cClllp1ic\! \\it~', 1\1'et1'er specified herein or not
Irantmg or a pen:~lt Joc~> not pn.',:;tunc to ~~i\"(' :mtllOrity to vio1~te 0 cllnce1 ISlons of
':1)" county, statt' or Cederal Ln\ rc~~tl1:lt in~; conqruct i or r1t'rfOl ,ancc 0 constnlctim cf tl'is
1"jIC of f ac : 1 it>, .
11
$1),c[
lc(' f{ receipt"
~(r -"fA
'I\" Dcp:ut~-".::rl.! tr~;(> ~/
^t'proved by /'55' t. f'lirector
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1'('L;On accl'l'ti..n~ :1l'''1ic3tion i;
Dat~' -' ,I
Co ~ t(~rl'-I:;j;Tt'-
f~tll~lnt('(r(();tor cor1~Truct ion
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TIE BACK
CONC SLAB
EXISTING
GROUND LINE
BULKHEAD PILE
L/'" RIP-RAP
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SCALE IN FEET
SCALE IN YARDS
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PURPOSE: PRIVATE DOCK AND
EROSION PROTECTION
DATUM: MEAN SEA LEVEL
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SEAWALL
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ADJACENT PROPERTY OWNERS
(1) HERB HODSON
(:2) GIL ARMANDO
PROPOSED SEAWALL & DOCK
IN SNAKE CREEK
ON PLANTATION KEY
MONROE COUNTY, FLORIDA
APPLICATION BY R.E.TIRRELL
SHEET 1 OF 1 JULY 1. 1983
SOUTH FLORIDA
BRANCH OF~lcr
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DEPt\RTMENT OF ENViRONMENTAL REGULATION
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3'.' COLe CO;j'<St: LClULfVAP{'
F-L" t A GURDA FLG...mA :;3~~O,~3"~-
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~~ECEiVEO ~:? 1 it 1933
September 9, 1983
Monroe County Director of Building,
Public Service Building
5825 Junior College Rd., West
Stock Island
Key West, Fla. 33040
Planning &
tf-I;)~An
Zoning /l~
Re: Monroe County, File No. 440730225,
Seawall, Roman Buch
Gentlemen:
. /
As per your request pursuant to Section 253.125, Florida Statutes
attached is a copy of the Department's Biological appraisal for
the referenced project. A hydrographic survey was not required.
Sincerely,
o~
_ n(t ~4
mes M. Stilwell GP~
nvironmental Specialist
JMS/ck
Protecting Florida and Your Quality of Life
•
•
DEPARTMENT OF ENVIRONMENTAL REGULATION •
PERMIT APPLICATION APPRAISAL
•
File No. : 44'0730225 County: Monroe • Date : 8-31-83
Applicant Name : Roman Buch •
Address : PO Box 674 , Libertyville, Ill 60048 -
Agent (if applicable) : Raymond E. Tirrell , Sr.
Address : PO Box 1268 , Islamorada, FL 33036
Location of project : Section (s) 14 Township 63S Range 37E
• Section (s) Township Range
Local Reference : Plantation Key .
Water Body: Snake Creek
•
Water Classification of Project Area : . III Adjacent Waters : III
Aquatic Preserve : None • • • _ .
•
•
Outstanding Florida Waters : None •
On site inspection by: V David Bishof • .
Date of Inspection_ 8-16-83 Original Applicati_on: Yes_X No.-
. Revised Application : Yes No Date : Date of 2nd Insp.
Biological and Water Quality 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 development of adjoining Properties as well as relevant
historical facts about the area.
•
C. Biophysical features of specific Prolect site a .d spoil_ site if
applicable . Include identification of bottom toes and an.v
relevant historical facts about the area of the oro j ect .
D. Potential impact of PrO ect onrem _
�1 - �OL� '._ 5 ?Ili :cc'.tc"'_�
quality. Address long-term impact as well_c s immediate _mPact
for all aspects of the Project .
•
E. Suggesti. ns , where a_' o o Vria _ -
- minimize the. ^otential im a• of "oject .
PERM 16-10 (Rev. 6/79).
/72
•
BUCH, ROMAN c71,
#440730225
Monroe County - Plantation Key
Page Two:= •
•
A. The applicant wishes to protect his property from erosion and
obtain enlarged boat mooring facilities . A vertical concrete
seawall will be erected to provide the desired erosion pro-
tection. The seawall will be built in two sections , one
• measuring 120 ft. and the other measuring 30 ft. long . An
estimated 120 yd3 of backfill will be. placed in 0 . 017 ac of
submergent and transitional wetlands behind the. proposed sea-
wall, Approximately two-thirds of the backfill will be placed
landward of the mean high water (MHW) contour line, and the .
remaining third will be waterward. Riprap will be installed •
at the toe of the seawall .
Enlarged boat mooring facilities will be provided by building
a cantilevered concrete dock as the seawall cap. • The seawall
cap will measure five (5) feet wide with three (3) feet of the
width extending out over water (450 ft2 over the water area) .
A curb on the landward edge of the . seawall will tend to prevent
stormwater from running directly over the dock into State waters . .
• As mentioned above, the seawall and dock will be built out of
. - reinforced concrete. . The backfill will consist of crushed rock
brought to the site over upland routes . The seawall will tie •
-
into existing adjacent seawalls . No backfill will be placed
before the seawall is built, in order to reduce turbidity.
__Proposed....techniques . for. maintaining water ..quality_.d.uring_the_...__
construction of the seawall , are .notincluded in the application.
B . The. project site is located on the southwestern end of Plantation
Key in the Venetian Shores subdivision. Venetian Shores is a
•water oriented, primarily residential, subdivision. . A series of •
- eleven dead-end canals , shoreline channels and a boat basin,
provide water access for the owners of virtually every lot in the
subdivision. -The subdivision was apparently created over a
number of years by dredging canals into an area composed primar-
ily of wetlands and using the spoil to create uplands .
The project site is located at the open water end of one of the
Venetian Shores canals . The surrounding neighborhood is devel-
oped with a varity of marine construction projects including
seawalls , revetments , docks , boat slips and dredged areas .
Bordering the east side of the project site is a lot developed
with a. single family residence , a seawall. and' boat slip. A
commercial boat was observed moored at the seawall . The north
side of the project site is partially bordered by a lot
developed with .1 private residence .e . Two sides �:=�._ .c_iais residence
BUCH, ROMAN
• #440730225 • -
Monroe County - Plantation Key
Page Three
. are formed by _seawalled shorelines . The remainder of the north
side of the project site is borderedby the _end of Leoni. Drive .
One of the Venetian Shores canals borders the ' south side of the _
project site .. The -canal is . approx_imately 100 ft. wide at".the
• project site. :. '
. Snake Creek forms -the 'western boundary' of the project site The
creek is -a-natural connection between the Atlantic Ocean to the
south and- Florida Bay to the north. • The -waters of the _Venetian
Shores Canals 'and Snake Creek. are designated as Class -III waters
(Chapters 17-3-. 081 and 17-3 .161, Florida. Administrative Code) .. - '
The> old fixed low bridge, where. the Overseas Highway crosses - -
Snake _Creek has. recently been replaced by a .draw bridge. The-_ resulting increase .in' boat traffic has caused several Snake
Creek property owners to complain of wake induced _erosion.
C. The applicant ' s property consists of an irregularly shaped 100+
ft. by 110+ ft.. (1/4 .ac) residential lot. . A . two story residence
is located on the lot. Much of the lot around the house 'is - •
covered by a layer of pea gravel. .The substrate under the pea
gravel and exposed- in other. .areas , is.= a mixture of crushed rock,
- sand and marl. . Most . of the' lot is at' an elevation estimated to ` -
_be 5 ft. above MHW. ' Vegetation .in, the upland areas of the lot
--- --__ consists of a variety of ornamental plantings .- - =
A 40 ft. ' section' of the canal front shore line of the project site
has already been developed 'with a seawall and dock very similar
in design.. to the one proposed in` the current application. - There
are-two sections of .unseawall.ed- shoreline on the canal -side of
- the project site. The two sections are located at either end of
- the section-. of seawall (the- seawall does not tie into : the - -
property. line as indicated in the application plans)'. .,
•
In the.- two unseawalled canal front areas, the shoreline is charac-
- terized by a steep fill bank, dropping from the elevation of the
upland -portion of the lot to:-'approlimately MHW. A shallow 5+ ft,
wide• shelf is found at the base of the bank. Beyond the shallow
- shelf, an .escarpment drops .to the floor of the , box-cut canal..
• Vegetation on the face of the canal front bank is dominated by a
• mix'ture of button,=ood (Conocaipus erectus) , sea grape (Coccoloba
uvifcra) and sea daisyBoir1Chla sp. , +
( ) At t'_he � uas� o� the shore-
l.ine. bank, moderate size red mangrove (Rhizophora mangle) and
white m-„„-,rove (Lanauncular.ia .racemosa) trees. doming te - t-.he
<eget:d:.ion . A few small patches oi• turtlegra,s (Thalassia
testudinum) _ : on the ound o the shallow shelf in` the cant 1 ,
BUCH; ROMAN
#440730225
Monroe County - Plantation Key
Page Four.
The topography of the Snake Creek shoreline is similar to that
on the canal front shoreline . The primary differences are a
somewhat shallower slope on the bank face and generally wider
• shallow shelf area and the presence of a boulder revetment of
the base of the shoreline hank.
Vegetation on the shoreline bank is once again dominated by
buttonwood, seagrape and sea daisy. The base of the bank is
relatively devoid of large vegetation, this area being occupied .
by the _boulder revetment. The boulders tare covered by a rich
assemblage of algae including Batophora sp. , Laurencia sp. ,
Halimeda sp. and Acetabularia sp. . A faunal assemblage with
zebra periwinkles (Littorina ziczac) fuzzy chitons (Acanthopleura
qranulata) and turkey wings (Arca zebra) making up the more
• visually obvious elements is found on the rocks . •
•
• In the shallow shelf area the macroflora was observed to include
Udotea sp. , Penicillus sp. and turtlegrass in areas covered by
sediments . Scattered rocks in the shelf area displayed a flora
similar to that of the revetment. Observed elements of the
= fauna in the shelf area included starlet coral (Siderastrea
radians) , sergeant major (Abudefduf saxatilis) and snappers
(Lutjanus spp. ) . •
--- -The-.shoreline. on- both _the - canal and .creek..side.s.__of__the_..project.__.
site did not appear to be eroding with any speed. The presence
of the vegetation found in these areas is evidence of the relative
stability of the shoreline .
•
• D. Construction related activities are expected to cause elevated
levels of turbidity, dissolved organic compounds and 'particulate
organic compounds in the waters surrounding the project site .
- . Proper use of turbidity control devices should be able to con-
trol this impact within acceptable levels . The proposed methods
for turbidity control do not appear to be adequate to the task.
Without adequate controls , the waters surrounding the' site are
likely to be degraded below State Class III water quality
standards .
The proposed construction will result in the permanent elimination
of all but a small section of the. shoreline wetlands at the
project site . With the loss of the wetlands will also be the
loss of their functions of pollution filtration, primary produc-
tion, habitat and sediment stabilization . In the case of the
pro-e t site , these functions are relatively well represented .