HomeMy WebLinkAboutResolution 310-1984
~
RE$~ClltI~N N~.
310_1984
mHEREA$, the B~ARD ~F t~llNtg t~rnmI$$I~NER$ ~F m~NR~E t~llNtg, FC~RIDA,
has receiveo an application from
R~BERt t. KRIEtER
IDHEREA$, in compliance with $tate $tatute, it is necessary as part
of the permitting proceDure to reaD the following Biological Assessment
into the RecorD as follows:
The applicant would like to provide improved boat mooring facilities for
a planned multi-family residential development. The goal will be
accomplished by building a boat basin along the side of an existing
primarily residential canal. The proposed basin witl measure 170 ft.
long pa3allel to the canal and 50 ft. wide (8500 ft). Approximately
2700 yd will be excavated in constructing the proposed project. It is
estimated that 90 percent of the material will be removed from areas land-
ward of mean high water (MHW).
Two of the sides of the boat basin will border the land and two sides will
border canals. The landward sides of the boat basin will be box cut into
bedrock. A five foot wide concrete cap will be built on the shoreline of the
long axis of the boat basin. The short axis of the basin will be riprapped.
A system of finger piers, including one forty-five foot by three foot, and
five twenty foot by three foot piers along with twenty mooring piles, will
divide up the basin area into ten boat slips. The slips will measure
seventeen by fifty feet.
Turbidity curtains will be utilized to help maintain water quality while
the project is under construction. The excavation work will be accomplished
using draglines and backhoes. The spoil will be spread with a bulldozer
on uplands immediately adjacent to the proposed basin. Reinforced concrete
will be employed for building the docks. A barge-mounted augar will be
used for placing the dock and mooring piles.
There are numerous contradictioffiwithin the description and plans supplied
by the applicant for this project. As a result, the above description of the
project represents a best guess as to what is actually being proposed.
The project site is located in the Rock Harbor area of Key Largo in the Key
Largo Ocean Shores subdivision. The subdivision is located on a small
peninsula, which projects off the eastern side of Key Largo, known as
Point Charles. Rock Harbor, which is a shallow tidal lagoon, is formed by
Point Charles. Key Largo Ocean Shores subdivision is located near the
base (north end) of the Point Charles peninsula.
A network composed of three pairs of parallel canals provide waterfront
access to a majority of the lots within Key Largo Ocean Shores subdivision.
The canals cut completely across the Point Charles peninsula, such that
their western ends connect to Rock Harbor and their eastern ends connect to
the Atlantic Ocean. The natural waterbodies at both ends of the canal
system, are within the John Pennekamp Coral Reef State Park and designated
as Class III, Outstanding Florida Waters (Chapter 17-3.041, 17-3.081 and
17-3.161, Florida Administrative Code)
Development within the subdivision consists of a mixture of commercial,
single family residential and multi-family residential. Of these, single
family residential is by far the dominant.
Within the last year, significant changes have been wrought in the Key
Largo Ocean Shores subdivision. Specifically, the southernmost of the
three pairs of canals within the subdivision has been excavated and the
land adjacent to it filled with the spoil. The canal dredging has been
conducted pursuant to permit number 44-34296 issued on April 23, 1982, to
Mr. Robert Krieter (copy attached). At the time of the inspection that was
made for the current application, the canal has been completely excavated
Resolution
Robert C. Krieter
Page Two
and all the lands surrounding it had been filled. The culvert, which the
permit required be installed in the northermost pair of canals, was still
under construction, a small part of an area which the permit required, be
scraped down to a wetland elevation, required further excavation and the
status of the riprap treatment along the toe of slope of the canal sides,
was unclear. The applicant indicated plans to complete the required work
in the near future and the project is generally considered to be proceeding
satisfactorily by this inspector.
The proposed boat basin will be located near the eastern end of the central
pair of canals where the newly excavated canal joins it. Specifically,
the basin will be located on the southeastern corner of the canal inter-
section. The proposed basin area is bordered to the north by the old
central canal, to the west by the leg of the newly excavated southern canal
which ties into the central canal, to the east by a thin strip of littoral
zone wetlands which form the Atlantic Ocean shoreline of the project area
and to the south by uplands. Access to the site by land is across the
uplands to the south and by boat is through the central canal and associated
access channel to the north.
As part of the recent canal creation project, the area of the proposed boat
basin along with the lands to the south, were filled within the last year.
The fill material is crushed Key Largo Limestone. Prior to being filled,
much of this area had been emergent (mangrove) and transition zone wetlands.
At present, as a result of the filling, the area is upland in character
and virtually devoid of any significant vegetation.
As mentioned earlier, a thin strip of emergent wetlands, typified by the
presence of red mangrove (Rhizophora mangle), white mangrove (Laguncularia
racemosa) and black mangrove (Avicennia germinans) trees to moderate size
lines the Atlantic shoreline. The mangrove trees are growing out of an
old line of riprap which was apparently placed in the area over twenty
years ago. This strip of wetlands represents the remaining section of the
formerly more extensive shoreline wetlands. The eastern end of the proposed
boat basin will come up to, but not into, the strip of shoreline mangroves.
The two-ended flow-through design of the canal system at the project site
takes advantage of a significant tidal head difference between the Atlantic
Ocean end and the Rock Harbor end of the canal. This head difference
generates relatively strong currents within the canals, particularly the
central canal. Water quality data, which was obtained for the canal system
prior to the southernmost canal being excavated, indicates that the strong
flushing currents do benefit the canal system, however, there were numerous
incidents of the canals not meeting Class III water quality standards.
(See the water quality studies prepared by Post, Buckley, Schuh and Jernigan,
Inc., dated May 1981, and by Rio Palinque Research Corp., received October
1980 in file number 44-34296). Unfortunately, water quality data on the
canal system since the new canal was excavated, is not available to this
inspector. It is noteworthy that the available data indicates a general
tendency for the canals to display better water quality toward their
eastern (Atlantic Ocean) ends. A station which was located immediately
adjacent to the proposed basin, displayed water quality consistently with-
in the requirements of Class III standards.
Temporary construction related activities are likely to result in elevated
levels of dissolved organic compounds, particulate organic compounds and
turbidity. Conventional turbidity control techniques (i.e. silt screens)
often do not work well in applications with current velocities as high as
those found within the canal. In order to be effective, particularly heavy
duty turbidity curtains will have to be employed.
As a result of the present condition of the proposed boat basin area, there
will be very little damage done to wetland biota by excavating it. The
remaining fringe of mangrove wetlands along the Atlantic shoreline of the
site adjacent to the eastern end of the proposed boat basin are, however,
likely to be heavily impacted by the proposed work.
Resolution
Robert C. Krieter
Page Three
Use of the proposed marina will result in increased discharges of hydro-
carbons, toxic metals, detergents, organic debris and miscellaneous debris
into the waters at the project site. The magnitude of these discharges
is not expected to be large enough to cause a water quality problem at the
site, particularly in light of the strong flushing currents found there.
BE It RE$~C~ED BY tHE B~ARD ~F t~UNtY t~mmI$$I~NER$ ~F m~NR~E t~UNtY,
FC~RIDA, that the ahove Biological Assessment has heen reaD into the
recorD anD Du1M consiDereD pursuant to FloriDa $tatute 253.124 hM the
BoarD of tountM tommissioners of mnnroe tountM, FloriDa, this I qfh DaM
of Qc-6o be.. ,19 9:J/ at a regu1ar1M scheDuleD meeting.
~ B~ARD ~. F t~UNt Y t~mmI$$I~NER$ ~F
m~N,R~E ~UNtY~FC~RI_
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tnaMor -
($EAC)
Attest:
DANNY L. KOLHAGE, Clerk
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t1erk of t. cuit tourt
'1Ji~\~cl~~, d, 'r\ ~W\c... H ~oc)~
I~Cuclen t. Pro M
'?' tountM AttorneM
OK~Y~~; ~R~~'~04~E
(305) 294-4641
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
Lucien C. Proby,
County Attorney
310 Fleming Street
Key West, Florida 33040
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 (ROBERT C. KRIETER) ~
3. Permit /
4. Application for Permit (Boat Basin) ~
5. Site Plan V
6. Location Map
~
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BY~. Ooa:
7. DER Asses~ment
Date 9-/;;2-6r
Tfi)~~~~~!~]' t',
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SEP 17 198[1
COUNTY ATTY.
M E M 0 RAN DUM
DATE:
September 10, 1984
FROM:
Jeffrey Doyle, Ph.D., Director
Robert Smith, Biologist (""h
TO:
SUBJECT:
Krieter, Boat Basin
Legal:
Lots 24 and 25, Block 13, Key Largo Ocean
Shores Subdivision, Key Largo
Zoning:
RU-3
I. INTRODUCTION:
This application to excavate a boat basin, which involves
excavating greater than 100 cubic yards within a body of water,
should be reviewed by the Board of County Commissioners
pursuant to Section 19-111 (b) (4) of the Monroe CountY__G9_c;le_.
II. SITE AND PROJECT DESCRIPTION:
The applicant proposes to construct a boat basin for community
usage. This project will involve the excavation of 3,537 cubic
yards of material of which 3,300 cubic yards will be landward
of the Mean High Waterline (M.H.W.L.) and 237 cubic yards will
be waterward of the M.H.W.L. Projects involving excavations
for the creation of marinas, boat mooring facilities, and boat
basins which involve greater than 100 cubic yards of material
are considered as an extension of navigable waters and as such,
pursuant to Section 19-111(b) (4) of the Monroe County Code,
should be reviewed by the Board of County Commissioners. The
project will involve the construction of 170 linear feet of
sea.wall (vertical concrete revetment) and 50 feet of rip rap
sea wall. In addition to this, a 5 foot wide concrete cap will
be placed along the basin perimeter. Boat mooring will be
accomplished by the placement of 4 - 20 foot long by 3 foot wide
piers in addition to 1 - 45 foot long by 3 foot wide pier.
Additionally 14 mooring pilings will be placed within the basin.
Effectively this will create 10 boat slips. (See enclosed plans.)
The stated purpose of this project is to provide docking
facilities for a proposed multifamily residential development.
-1-
A site visit was performed by Annette Nielsen, former County
Biologist, on July 6, 1983, and by myself on September 7,
1984, and resulted in the following: The area in question is
bordered on the south by the Atlantic Ocean, on the north and
east by subdivisional canals, and on the west by a newly
scarified subdivision. The lots do not fall within the Shore
Line Protection Zone (SPZ) as defined by Section 4-18 of the
Monroe County Code. The area bordering the Atlantic Ocean is
in an altered state in such that a previously placed rip rap
boulder revetment had been erected at some time in the past.
A survey of vegetation present on site showed depauperate con-
ditions with the only plants being sea purslane (Sesuvium sp.)
and red mangrove (Rhizophora mangle) of a less than 2 foot
condition. The overwhelming majority of the two lots have no
vegetation present. The border of the property does exhibit
some fringing mangroves, red and white (Rhizophora mangle and
Laguncularia racemosa, respectively).
The bordering canals exhibit a very great tidal flux. This
canal system has a flushing current unparalleled in the Keys.
No fueling facilities or live-aboards will be allowed in the
marina. Sewage relief will be provided by a sanitary pumpout
station. This will basically be a residential facility,not a
commercial facility.
III. EVALUATION:
The project as proposed follows the guidelines for marina con-
struction as outlined in the Monroe County Coastal Zone
Protection and Conservation element as delineated on pages 38
and 39. In particular this location does maintain the maximum
physical existent advantages with: no destruction of submerged
grasses and no channel dredging necessary, flushing adequate,
no live-aboards, and an adequate spoil area. The spoil is to be
located to the west of the site in a previously scarified
section of a new subdivision.
The anticipated impacts will be an increase in turbidity during
construction which can be rectified by the placement of high-
velocity turbidity curtains. Some organic debris and petro-
chemicals will be released over the long term into the ocean.
It will be determined by the Florida Department of Environmental
Regulation (F.D.E.R.) as to the acceptable level of chemicals
to flux from the marine.
IV. RECOMMENDATION:
The biologist recommends approval for the project.
-2-
Conditions:
(1) Employ high-velocity turbidity curtains
during construction
(2) No live-aboards to be allowed
(3) A sewage pumpout station to be
constructed
(4) A berm or "lip" to be constructed around
the basin to prevent runoff into the
facility
(5) Rip rap to be placed at the toe of the
vertical concrete seawall.
v. OTHER:
The applicant has already secured permits from the Florida
Department of Environmental Regulation (F.D.E.R.) and the
u.s. Army Corps of Engineers (A.C.O.E.) (See enclosures.)
Enclosures:
(l) Plans
(2) F.D.E.R. Bio Report
(3) F.D.E.R. Permit
(4) A.C.O.E. Permit _
-3-
~
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
Robert C. Krieter
Post Office Box 1886
Key Largo, Florida 33037
2) Date
6-9-83
3) Phone number
FOR DEPARTMENT USE ONLY
Resolution No.
451-3410
Date:
4) Contractor or agent's name, mailing address & phone number
Robert, Eagan & Routa Law Firm
.217 S. Adam Street
Tallahassee, Florida 32301
5) Legal description of property:
Section 32 & 33
Key
Largo
Subdivision Key Largo Ocean Shores
Township 61S
Lot
24 & 25
Block
13
Range
39E
Street, road or mile marker
S. Ocean Shore Drive
Volume of material:
dredged/excavated
filled/deposited
237 c.y.
waterward
ofM.H.W.
3300 c.y.
landward
of M.H.W.
o c.y.
waterward
of M.H.W.
3f137 c.y.
landward
ofM.H.W.
ZONING: RU-3
PURPOSE:
Cost of Permit
Estimated cost of Construction
Biologist Comments, Restrictions or Special Conditions if any: APPROV AL
1. Employ high-velocity turbidity curtains during construction
2. No live-aboards to be allowed
3. A sewage pumpout station to be constructed
4. A berm or "lip" to be constructed around the basin to prevent
runoff into the facility
5. Riprap to be placed at the toe of the vertical concrete seawall.
Permits from the D.E.R. and the A.C.O.E. have already been issued.
Dr. Jeffrey M. Doyle, Director
Planning & Zoning Department
Robert C. Krieter
P. O. Box 1886
Key Largo, Florida 33037
......
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305/451-3410
" ; ,;,-1 (Ir (lr ;l~~cnt' S n:U:1C, JIlall i :t::: ;jlldrl':O~', 1'11":,'
Roberts, Eagan & Routa Law Firm
2 L7 S. Adam Street
Tallahassee, Florida 32301
l-("~~! ~ ~ I ~;it 1 n;1 ~l1r;jhl':' e
RECEIVED JUN 2 7 1983
'_'\';11 dec:crirtion of property:
~"ti()TI.
32 & 33
T'o-IS----
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KEY LARGO OCEAN SHORES, AMENDED & EXT.
Fe:_, K L ~\Ihd j vi s ion,
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PLAT, PB 4- PG.
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24 & 25
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!'c"Cl )'. ~ 1.]:(. proposed activity,
t (, h. (":(;1\':11 ed or c.i~cl,arged,
methods of const1"llctiulJ i, :L'l(111111 (If JII,'Jt('rj;J]
Descrihe Tmrpc5;c (, intcnr1{'rl use of proj cct.
(in cuhic \":1)'
SEE ATTACHED SHEET.
drcc.~e~/exc~vated
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3537 c.\'.
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Applicant: Mr. Robert C. Krieter
] l'
llehl'r permits issucd and/or ;ll'r1ic\i for. iJlcl\lClt, ;T':11i~:;m:'~ n:!fll', Fe'l tri~, site:
DER & COE
i: .1 1:' ,II \(>{, 1:::s h'en su1'TIlittC(1 for this pro_iect (or Of'e 5jmiJ:lr) in tl'c past,
(,'.:']:,.:, n:;:50:1 for nCh' application 8J1cJ r,ive arplic:mt's name if djfferent frolll curren1
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N/A
. t,:cY"31 :mo State agenCJCS t)~at 11iJV[' reCC1\'C(: ;-:j!!,jlCal1CCS JUT lrl~ proJect.
DER & COE
11;i5 completed applicCltir. fon:, hij] -i'(' ;lccex;lp;UlICr' t'\' t"c
l'\.}}O\.:ing, or it \",ill ~:CT be rrocc:s~l'd.
';'.." (~, 5CtS of dra\\'ings, on 812 X II paper, s11Oh'ing JOClt1('!1, Tllot plan, to[' \'10\'; ;U1(1
l',':'~ sectim of propos:.!l, drawn to 5C8JC.
',,:,1 j,'::: inll )lr0.~l'55jnp fce ;15 follows:
";>'. ('" fer (;'rc;tge. fiJl, dccl;s IT any structures affr0l11in!; natural \,':.11er halics.
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SKII-I04
Application: RObert_ K rie.terll
Sheet 2 of 3
Date: 9/oJune 1983
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Purpose: To Provide
OWners
DATUM: MSL
Adjacent:Property Owners:
Hobert Krieter, Applicant
p. O. Box 1886
~ey Largo, Florida 33037
Boat Mooring Facility for On-Site Property
In: Manmade Canal
At: .Key Largo Ocean Shores
County of Monroe, State Florid
Application by: Robert Krleter
Sheet.J.. of 3
Date: 9 June 1983
.
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SKll-l04
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SK 11-104
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Application: Robert Krieter
Sheet 3 of 3
Date: 9 June 1983
,I
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STATE OF FLORIDA
i
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DEPARTMENT OF ENVIRONMENTAL REGULATION
TWIN TOWERS OFFICE BUILDING
2liOO tlLAIR STONE ROAD
TALLAHASSEE, FLORIDA 32301'8241
BOB GRAHAM
GOVERNOR
VICTORIA J. TSCHINKEL
SECRETARY
PERMIT'fEE:
Hobert Kr-ieter
c/o Roberts, Egan and Routa, P.A.
217 South Adams Street
Tallahassee, Florida 32301
Permit Number: 440715699
Date of Issue: 06/01/84 ~
~~.: . ~~] 05/31/87
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This permit is issued under the prOVISIons of Chapters 253
and 403, Florida Statutes, Public Law 92-500, and Florida
Administrative Code Rules 17-3 and 17-4. The above named
permittee is hereby authorized to perform the work or operate the
facility shown on the application and approved drawing(s), plans,
and other documents attached hereto or on file with the department
and made a part hereof and specifically described as follows:
PROJECT DESCRIPTION:
To excavate a marina basin 170 ft. long by 50 ft. wide from an
upland area along the south side of an existing canal system by
removing 3,537 cu. yds. of material to an elevation of -6.0 ft.
MSL; to construct 170 linear ft. of concrete vertical seawall
with a 5 ft. wide concrete cap and 50 ft. of riprap seawall;
to construct 4 piers 20 ft. long by 3 ft. wide and 1 pier 45
ft. long by 3 ft. wide and to place mooring pilings to provide
10 boat slips.
LOCATION:
Key Largo, Atlantic Ocean, Monroe County, Section 32 and 33,
Township 61 South, Range 39 East, adjacent to John pennekamp
Coral Reef State Park, not in an aquatic preserve, Class III
waters.
Page 1 of 8.
Protecting Florida and Your Quality of Life
Appllcatlon,N.o,
84C-2522
KRIETER, ROBERT C.
. Name 0' AppllCllnt
Effectl.e Dat.
AUGllST 16. 1984
uplratlon Dat. (II ;,pplieab'-)
AUGUST 16, 1989
DEPARTMENTOFTHEARMY
PERMIT
Referring to written request dated June 21, 1983 'or a permit to:
I Xl Pnform work in or affecting navigable waters of the United States. upon the recommendation of the Chief of Engineers.
purlluant to Section 10 of the Riven and Harbors Act of March 3. 1899 (33 U.S.C. 4(3);
I Xl l>illcharge dredged or fill material into waters of the United States upon the issuance of a permit from the Secretary of the
Army actinjt through the Chief of Engineers pursuant to Section 404 of the Clean Water Act (33 U.s.C. 1344);
( ) Transport dredged material for the purpo.e of dumping it Into ocean wlltera upon the iBluance of a permit from the
S..cretary of the Army acting through the Chief of Engin..r. punuant to Section 103 of the Mllrine Protection, Re.earch and
Sanctuariel Act of 1972 186Stot. J052; P.L. 92,632);
Mr. Robert C. Krieter
Post Office Box 1886
Key largo, Florida 33037
j" hl'r.by authorized by the Secretary of the Army:
1.0
construct a marina basin by excavation of 3,537 cubic yards of material;
construction of a seawall; placement of riprap; construction of piers; and
installation of mooring pilings
In
at
a manmade canal with access to the Atlantic Ocean
Sections 32 and 33, Township 61 South, Range 39 East, Key Largo, Monroe
County. Fl or; da
in accordance with the plan. and drawings attached hereto which are incorporated in and made a part of thi. permit (0" draw-
inN.<. Nil'l' fi/.. n"nab~rorot^~rd~fi"ir~ id~ntifjcotion mor".)
two sheets entitled "84C-2522" dated June 1, 1984
lIubject to the followin, conditioll.:
I. General CondItIon.:
a. That all activitl.a Identified and authorized herein .bell be con.iatent wIth the term. and conditlona of thl. permit; and
that any activitiea Dot apeclflcally ideDtifled and authorized herein .han conatltute a vloletloD of the terms and condition. of
thi" permit which ma, relult in the modification, auapen.lon or revocation of thi. permit. In whole or in part, aa .et forth more
SP.l"ifiully in Goneral Condltiona; or II hereto, and In the In.tltutlon 01 auch Ilgal proceediD,a II the United Statee Govern-
ment may consider appropriate, whether or not thl. permIt b.. been previoualy modified, eu.pended or revoked ID whole or in
part.
ENG FORM 1721, Sep 82
EDITION OF 1 JUL' 77 IS OBSOLETE
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PEill1IT APPLICATION APPRAISAL
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01 440715699
F 1. e No.:
County:
Monroe
Date: 3-28-84
Applicant Name: Robert C. Krieter
Address: PG Box 1886, Key Largo, FL 33037
Agent (if applicable):
Address:
Roberts, Egan & RoutaLaw Firm
217 S. Adam St., Tallahassee, FL 32301
Location of project: Section(s)
33
Township
61S
Range 39E
Section(s)
Township
Range
Local Reference:
Key Largo
Water Body:
Atlantic Ocean
Water Classification of Project Area:
III Adjacent Waters:
III
Aquatic Pre~erve:None
Outstanding Florida Waters:
John Pennekamp Coral Reef State Park
On site inspection by:
Date of Inspection:
David Bishof
3-14-84
Original Application: Yes
No X
Revised Application: YesX No
.
Date: 2-16-84 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 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 all aspects of the project.
E. Suggestions, where appropriate, for modifications that may reduce
or minimize the potential impact of project.
p E Rf.l 16 -10 (Re v . 6/7 9 )
..
KRIETER, ROBERT C.
#440715699
Monroe County - Key Largo
Page Two
A. The applicant would like to provide improved boat mooring
f~cilities for a planned multi-family residential
development. The goal will be accomplished by building a
boat basin along the side of an existing primarily resi-
dential canal. The proposed basin will measure 170 ft.
long parallel to the canal and 50 ft. wide (8500 ft2).
Approximately 2700 yd3 will be excavated in constructing
the proposed project. It is estimated that 90 percent of
the material will be removed from areas landward of mean
high water (MHW).
Two of the sides of the boat basin wil~ border the land and
two sides will border canals. The landward sides of the boat
basin will be box cut into bedrock. A five foot wide concrete
cap will be built on the shoreline of the long axis of the
boat basin. The short axis of the basin will be riprapped.
A system of finger piers, including one forty-five foot by
th~ee foot, and five twenty foot by three foot piers along
w~th twenty mooring piles, will divide up the basin area into
ten boat slips. The slips will measure seventeen by fifty
feet.
Turbidity curtains will be utilized to help maintain water
quality while the project is under construction. The exca-
vation work will be accomplished using draglines and backhoes.
The spoil will be spread with a bulldozer on uplands
immediately adjacent to the proposed basin. Reinforced
co~crete will be employed for building the docks. A barge-
mounted augar will be used for placing the dock and mooring
piles.
There are numerous contraditions within the description and
plans supplied by the applicant for this project. As a result,
the above description of the project represents a best guess
as to what is actually being proposed.
B. The project site is located. in the Rock Harbor area of Key
Largo in the Key Largo Ocean Shores subdivision. The
subdivision is located on a small peninsula, which projects
off the eastern side of Key Largo, known as Point Charles.
Rock Harbor, which is a shallow tidal lagoon, is formed by
Point Charles. Key Largo Ocean Shores subdivision is located
near the base (north end) of the Point Charles peninsula.
A network composed of three pairs of parallel canals provide
waterfront access to a majority of the lots within Key Largo
Ocean Shores subdivision. The canals cut completely across
KRIETER, ROBERT C.
#440715699
Monroe County - Key Largo
Page Three
the Point Charles peninsula, such that their western ends
connect to Rock Harbor and their eastern ends connect to
the Atlantic Ocean. The natural waterbodies at both ends
of the canal system, are within the .John Pennekamp Coral
Reef State Park and designated as Class III, Outstanding
Florida Waters (Chapters 17-3.041, 17-3.081 and 17-3.161,
Florida Administrative Code) .
Development within the subdivision consists of a mixture
of commercial, single family residential and multi-family
residential. Of these, single family residential is by
far the dominant.
Within the last year, significant changes have been wrought
in the Key Largo Ocean Shores subdivision. Specifically,
the southernmost of the three pairs of canals within the
subdivision has been excavated and the land adjacent to it
filled with the spoil. The canal dredging has been conduc-
te~ pursuant to permit number 44-34296, issued on April 23,
1982, to Mr. Robert Krieter (copy attached). At the time
of the inspection that was made for the current application,
the. canal had been completely excavated and all the lands
surrounding it had been filled. The culvert, which the
permit required be installed in the northernmost pair of
canals, was still under construction, a small part of an
area which the permit required, be scraped down to a wetland
e~evation, required further excavation and the status of the
riprap treatment along the toe of slope of the canal sides,
was unclear. The applicant indicated plans to complete the
required work in the near future and the project is generally
considered to be proceeding satisfactorily by this inspector.
C. The proposed boat basin will be located near the eastern end
of the central pair of canals where the newly excavated canal
joins it. Specifically, the basin will be located on the
southeastern corner of the canal intersection. The proposed
basin area is bordered to the north by the old central canal,
to the west by the leg of the newly excavated southern canal
which ties into the central canal, to the east by a thin strip
of littoral zone wetlands which form the ^tlantic Ocean shore-
line of the project area and to the south by uplands. Access
to the site by land is across the uplands to the south and
by boat is through the central canal and associated access
channel to the north.
^s part of the recent canal creation project, the area of the
proposed boat basin along with the lands to the south, were
filled within the last year. The fill material is crushed
~
KRIETER, ROBERT C.
#440715699
Monroe County - Key Largo
Page Four
Key Largo Limestone. Prior to being filled, much of this
area had been emergent (mangrove) and transition zone
wetlands. At present, as a result of the filling, the area
is upland in character and virtually devoid of any signi-
ficant vegetation.
As mentioned earlier, a thin strip of emergent wetlands,
typified by the presence of red mangrove (Rhizophora mangle) ,
white mangrove (Laguncularia racemosa) and black mangrove
(Avicennia germinans) trees of moderate size lines the
Atlantic shoreline. The mangrove trees are growing out of
an old line of riprap which was apparently placed in the
area over twenty years ago. This strip of wetlands repre-
sents the remaining section of the formerly more extensive
shoreline wetlands. The eastern end of the proposed boat
basin will come up to, but not into, the strip of shoreline
mangroves.
The two-ended flow-through design of the canal system at the
project site takes advantage of a significant tidal head
difference between the Atlantic Ocean end and the Rock
Harbor end of the canal. This head difference generates
relatively strong currents within the canals, particularly
the central canal. Water quality data, which was obtained
for the canal system prior to the southernmost canal being
excavated, indicates that the strong flushing currents do
be~efit the canal system, however, there were numerous
incidents of the canals not meeting Class III water quality
standards. (See the water quality studies prepared by Post,
Buckley, Schuh and Jernigan, Inc., dated May 1981, and by
Rio palinque research Corp., received October 1980 in file
number 44-34296). Unfortunately, water quality data on the
canal system since the new canal was excavated, is not
available to this inspector. It is noteworthy that the
available data indicates a general tendency for the canals
to display better water quality toward their eastern
(Atlantic Ocean) ends. A station which was located immed-
iately adjacent to the proposed basin, displayed water
quality consistently within the requirements of Class III
standards.
D. Temporary construction related activities are likely to result
in elevated levels of dissolved organic compounds, particulate
organic compounds and turbidity. Conventional turbidity
control techniques (i.e. silt screens) often do not work well
in applications with current velocities as high as those
found within the canal. In order to be effective, particularly
heavy duty turbidity curtains will have to be employed.
..
KRIETER, ROBERT C.
#440715699
Monroe County - Key Largo
Page Five
As a result of the present condition of the proposed boat
b~sin area, there will be very little damage done to wetland
biota by excavating it. The remaining fringe of mangrove
wetlands along the Atlantic shoreline of the site adjacent
to the eastern end of the proposed boat basin are, however,
likely to be heavily impacted by the proposed work.
Use of the proposed marina will result in increased discharges
of hydrocarbons, toxic metals, detergents, organic debris and
miscellaneous debris- intO-the Waters at the project site. The
maghitude o~ these-discharges is not expected to be large
enough to cause a water quality problem at the site, particu-
larly in the light of the strong flushing currents found there.