Backup Documents 12/15/2009 Item #10F
#10F
THIS DOCUMENT
HAS NOT BEEN
RECEIVED IN THE
CLERK TO THE BOARD
OFFICE
AS OF
November 23, 2010
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-A: ( D. f ./ MINUTES OF THE MEETING OF THE COLLIER COUNTY
l t ( ~~-~i:,.; cJ~( ~"I:' CLAM BAY ADVISORY COMMITTEE ;/01' I.' v
. '-Z ____
C) ,",' H-c C +DO k Co!' !I) Naples Flonda January 20 2009
D. C~,(." --/-fcc. L,~, 1 , Ij.~~'\:"t 't'PI~(l. 'I*---r:.
). rrior;fl,f5. is .:.:,:;"( ::1:"(,>,:.,, col~'k.-?--t d.rt{'J'-" __ t',' /
(,.",. .. :SU.'.'.' "1" . _ C .c, ,.._
'-f.-J/\J.) ~,!; -' LET IT BE REMEMBERED, that the Collier County Clam Bay Advis~ly'i/ a
C() {(I il/\ I' -\--y e C \(V\:A' L,I' / .s
16- vvt-"{'j/+ Committee, in and for the County of Collier, having conducted business herein,
f'r,' v;.' i~ ,'t c; met on this date at 2:30 P.M., at the Office of Coastal Zone Management, 3300
/.- '
~JvvJJ '-W~., L()~~~~ta'Barba~t~lv~~:~aPles, Florida with the following members present:
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CHAIRMAN:
James A. Carroll
John Arceri
Ronald A. Glah
Noah Standridge
Robert Rogers
Kathy B. Worley
David Roellig
Tahlmann Krumm, Jr.
ALSO PRESENT:
Gary McAlpin, Director, Coastal Zone Management
Pamela Keyes, Environmental Specialist
Colleen Greene, Assistant County Attorney
Sandy Martello, Administrative Asst.
lOF
1
(
January 20, 2009
l. Call to Order
Gary McAlpin, Director Coastal Zone Management called the meeting to order at 2.30
PM.
II. Pledge of Allegiance and Invocation
The Pledge of Allegiance was recited.
III. Roll Call
Roll call was taken and a quorum was establisbed
IV. Changes and Approval of Agenda
Mr. Roellig moved to approve th,' agenda. Second by Mr. Glall.
Carried unanimously 7-0.
V. Puhlic Comments
Speakers
Martha Dykman, Seagate resident addressed the Commitlee noting the Seagate
Community has been left out of the process to date. They have residents within the
community who boat and many of the management titccts ofthc existing permit have been
ignored by Pelican Bay. She requested the Clam Pass Park Plans remain a separate issue
from the issues to be addressed by the Committee. She requested c1aritlcation if the
Pelican Bay Foundation has approval rights in Clam Bay for installation of signs, dredging
or other intrusive activities; and whether the Coast Guard and Army Corp has required the
installation of navigation aids
Doug Finley, Naples resident addressed the Commitlee noting he kayaks in Clam Bay at
least once a month and is interested in the issue as it is a great recreational asset for the
County.
Mary Bolin, Pelican Bay Community addressed the Committee noting her main concern
was the health and stability of the Mangrove community.
Anne Geolger Harris, Pelican Bay Homeowner addressed the Committee noting concern
over the state of the Mangroves and highlighted the great work that has been completed in
this area over the last 15 years. She is also concerned with the possible negati ve impacts
on this environment in conjunction with navigation in Clam Pass.
VI. Approval of Minutes
Gary McAlpin noted the minutes provided will be summary minutes. (Not verbatim)
VII. Introduction of Clam Bay Advisory Committee and Housekeeping
Gary McAlpin provided a packet containing the following documents:
· "Clam Bay Advisory Committee Section I "IntrodUCTion of Clam Bay Advisory
CommiTtee and HousekeeplIIg" and Section Il "Background, Section III
\j "Immediate Staff Recommended Priorities for the Clam Bay Advisory Committee
daled ] /20/09.
\/
,
lOF
January 20. 2009
· Clam Bay Advisory Commillee Member and related Staff contactlist.
· "Ordinance No. 2008-48" establishing the Clam Bay Advisory Committee.
· "Clam Bay Seagrass Assessmellt" prepared by PBS & J dated October 2007.
· Lellerfrom Jon M. Iglehart. Florida Department of EI/vironmental Protection to
Jim Mudd, COl/1I/y Manager - Re. Collier County Pelican Bay dated August 26,
200S
· Email from Garv McAlpin. Director Coastal Zone Mallagemenlto Pamela Keves,
Hl/virOllmental Specialist dated June 12, 200S -- Sllbjcct: FW. Clam Bay
· Memorandum/rom the l,ainie Edwards, Florida Department o/Em'irollmenta/
Protectiollto Gary McAlpill dated June 9. 200S Sllbject: Interpretation oCJoint
Coastal Pennit: Clam Bay Restoration and Long Term Management Project
(012S463-JC)
· Leller from Pamela Keyes. Collier County Environmelllal Specialist to Joe Hmbres,
US Coast Guard dated April 21, 200S -- REF: Private Aids to Navigation, Clam
Bay Collier County
· Leller from Pamela Keyes. Collier COllllty Environmental Speciatistto Laillie
Edwards Florida Department of Environmelllal Protection dated April II. 200S _
RE: FDEP Pennit No. 012S463-001-Jc.
· Letter to Tara Alford, Management Analyst from Pamela Keyes, Environmental
Specialist dated 5/09/0S - Subject: Clam Bay Waterways Markers, Collier County
· Leller from Pamela Keyes, Environmental Specialist to FLDEP dated April 21,
200S -- Subject Exemption Application for Rule #40E-4.501(7)
· Leller from Tim Schwan, Environmental Specialist. FDEP to Pamela Keyes dated
May 21. 200S - Re. Collier County -- ERP File NO. 11-0288121-001
· Emailji-om Tara Alford to Collier COU1l/V Clam Bay Pass Stakeholders dated June
3, 2008 - Re: Proposed markers in Clam Pass/Clam Bay
· Copy of Proposed "Cautioll Sea Grass " Areas Sign
· Tim Hall. Turrell Hall and Assoc. proposed channel markers map.
· Marcia Cravens, proposed chanllel markers map dated 10/30/08
· "Clam Bay Advisorv Commillee f)ra/i Proposal datcd 1/16/09 identi Cying Creation,
Function. Powers and Dutics. etc. oCthe Clam Bay Advisory Committee.
Mr. Krumm moved to nominute Jumes A. Carroll as Chtlirman of the Clum Jlay Adl'i.wry
Committee. Second by Mr. Arceri. Carried unanimously 7-0.
Mr. Krumm moved to nominate John Arceri as Vice Chairman of tlte Cltlm Bay
Advisory Committee. Secolld by Mr. Roellig. Curried ullanimously 7-0.
The members introduced themselves and provided their backgrounds to the attendees.
Staff also introduced themselves.
Mr. Rogers arrived at 2:50 pm
1
lor
January 20, 2009
Gary McAlpin provided a brieCoverview oflhe Committee, whieh was appointed by the
Board of County Commissioners to deal with the Management of Clam Bay. It will sunset
on December 31,2009.
The Committee meetings will be held at Sudgen Theatre, at the Regional Library (Orange
Blossom Drive) on the 3'd Thursday of each month at 2.30 PM
Discussion ensued on the concept of adopting Ihe rules of procedure utilized by the Coastal
Advisory Committee (CAC), which limits a public speaker to 3 minutes of time. It was
noted at the discretion of the Chainnan, the time may be increased for a particular speaker,
if necessary.
Colleen Greene, Assistant County Attorney recommended the rules of the CAC be
distributed to the members for review, and a fonnal vOle on adopting them be taken al the
nexlmeeting.
Colleen Greene, Assistant County Attorney provided an overview of the Sunshine Law
via a slide show entitled "Governmel/l in the SUI/shine" prepared by the Office of the
County Attorney highlighting the following:
. The Committee is subject to the Sunshine I.aw.
. The meetings must be properly noticed, open to the public and minutes taken.
· Minutes arc not required to be verbatim.
· The meeting must be open to the public; however there is no requirement to
allow "puhlic participation". Collier COLl.nty encourages the public to
participate.
· The Law applies when two members of a Committee discuss any business that
may come before the Committee (outside of the publicly noticed meeting).
· One member may meet with County StaffwithoUI violating the law.
· One member of a Committee may meet with one member of another Committee
without violating the Law (a Clam Bay member with a CAC member, etc.) She
cautioned on this procedure, as information may not be relayed to a second
CAC memher.
· One-way communications are allowed, however she cautions against it and
recommends all infonnation to be distributed to Ihe Committee by a member be
submitted to Staff for distribution.
· Fact-finding missions are outside the scope of the Sunshine Law, but she urged
extreme caution in utilizing this procedure. Please COli tact the County
Allorney's Office before undertaking (he endeavor.
· A quorum must be physically present to conduct business; a member available
by teleconference may not be utilized to obtain a quorum. A member available
by teleconference may participate if the quorum present tlnds an "exlraordinan'
circumstance "jor fhal person to participllle.
. She will provide a handout on the email rules. (Public to member, member-to-
member, member to Stall, etc.)
· If a public person contacts a member, il is not required to be distributed to all
members or Staff; however the email should be retained.
· Violations of the Law are subject to criminal misdemeanor charges.
.1
lOF 1
January 20, 2009
Ms. Worley and Mr. Roellig noted they are members of the Estuary Conservation
Association.
Colleen Greene will research the details of the Association and provide a recommendation
on any potential Sunshine Law issues.
VIII.
Background
Gary McAlpin provided an overview of the history of the Management of the Clam Bay.
This included an overview of the activities of the original Clam Bay Advisory Group that
initiated the Task of renewing the applicable permits. This Group began in the spring of
2008 and was disbanded.
He r~viel'(~d_Section Il':"Bg<;kgrqu,!'g" of the document Clam Bay AdvisOlY Committee
dated 1I2Cl/2009 referenced at the beginning of item VII.
-X, ",.,('i:
It was noted Pelican Bay initially funded the efforts when the Mangroves suffered die off
(approximately 1 0-15 years ago). As oflate, the County has contributed the larger share of
expenses in the Management.
The purpose of the Committee is to expand on the excellent work completed by Pelican
Bay, and incorporate the whole Estuary into Best Managemelfl Practices. To date the
expenditures in Management of the Bay are as follows (approximately):
Pelican Bay Services Division S1.3M
Westinghouse $1.0M
Collier County S1.3M
Gary McAlpin referenced the letter from Jon M. Iglehart, FDEP dated August 26, 2008
and noted he wilI'i~t~in cIari~_<;~!ion on the pemlit_!s~u~associated with maintaining the
Mangroves. '. . -,-""-'-- . . .,..~_..~~~__., _,_
~"""""'*"-
IX. Immediate Staff Recommended Priorities for the Clam Bay Advisory Committee ~ ~
Gary McAlpin reviewed Section III ("Immediate Staff Recommended Priorities for the
Clam Bay Advisory Committee ") of the document Clam Bay AdvisolY Committee dated
1120/2009.
He referenced the proposed navigation aids maps prepared by Tim Hall of Turrell, Hall and
Assoc. and Marcia Cravens. Staff has no preference in the number of navigational aids
installed in the Bay, but recommends the minimum number necessary to address
environme.n.tal and safely concem~~. -.-' ;-- ~ --,._~
-_."..,,,.,..""....~,. ._.~......""....,._. .._.",~-
Discussion ensued on how to approach the priorities outlined in the document.
Gary McAlpin stated for the next meeting he would provide a draft of funding details. He
noted the main issue to address initially should be the navigation markers.
Discussion ensued on the various Agencies (Coast Guard, Army Corps of Engineers, etc.)
opinions for the requirement of navigation markers, and whether the permit requires
navigation markers be installed.
Ms. Worley provided the following background information for consideration:
· Copies of Page 8 and 9 ofFDEP permit #0128463-001-JC
<;
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January 20, 2009
· Collier County Ordinance 97-10 and attached maps
· Historic Aerial photos of the area
Mr, Arceri referenced the Ordinance the Committee is subjeel to and noted the BCC
required approval of a proposed work plan before proceeding.
Gary McAlpin noted the Ordinance states this, however some of the items could be
conducted concurrently (marking the channel, etc.). The 2nd "Immediate Priority" is
developing the duties, responsibilities and Charter of the Committee which addresses this
consideration included in the Ordinance.
Discussion cnsued on thc fcasibility of appointing onc member 10 meet with Staff to
provide a recommendation to thc full Committee on the issue of the navigational aids. !t
was determined that more Ihan one member should undertake the activity.
Gary McAlpin noted the navigation markcrs need to be installed in order for the County to
come into compliance with the existing permit.
Mr. Rocllig noled marking the "Pass" might he difficult as it is dynamic in nature and sclf-
nushing causing the channclto shi n.
Ms. \Vorley noted some of the information she provided documents thaI phenomena.
Mr. Arceri moved to appoint Mr. Rogers all/I Mr. Tahlmann to a Subcommitteefor the
purpose of rel'iewing with Staff a plan for navigational aids for Clam Bay Estuary awl
report back with a recommendation to the full Committee within the /lext 2 meetings.
Second by Mr. Standridge.
Speakers
Marcia Cravens, Friends of Clam Bay provided a handout - Re. "From Clam Bay (Long
Term) Restoration and Management Plan Section 3.0. Management Options" and other
attached documents. She is challenging the asseltion by Cynthia Ovdenk of the US Anny
Corps of Engineers that channel markers are required. They (County and Pelican Bay
Services) are in compliance with the permit and have never received a non-compliance
Jetter.
Ted Raia, Pelican Bay Services Division noted National Oceanographic and Atmospheric
Administration maps denote the Pass as "non-navigable" with no indication of navigation
markers. Navigation aids are shown on the maps for other Passes in the area. A book by
the National Oceanographic Atmospheric Administration describes the Pass as a changing
shoal, passable in high tide and to be avoided in bad weather. It is extremely shallow
between # 4 and 5 with no existing channel. He recommended placing a bridge at Seagate
as the water in Seagate is 6 feet deep, but only I foot in most places in the Bay.
Martha Dykman, Seagate Resident submitted an original real estate brochure for
"Seagate" which advertised boating was available. She staled the community will not
surrender the boating rights, which they have fought for before and prevai led. The
waterway is a State waterway, and the issue should not be decided by Pelican Bay
homeowners. They will continue to defend their boating rights in relation to the Bay.
r;
10F '"
January 20, 2009
Anne Geolger Harris, Pelican Bay Resident noted the Seagate brochure was a sales
brochure and may not accurately represent the rights to the homeowner. The community
(Pelican Bay) will offer any assistance to all involved to resolve the situation.
Ms. Worley noted she has received conflicting information regarding whether the marking
of the channel is required. She recommended the issue be resolved as well.
Mr. Arceri amended the 1II0tion to appoillt Mr. Rogers and .lI4r. KrulIIlII to a
Subcolllminee for the purpose of reviewing with (the inforlllation) Staff and determine if
navigational aids are required by perlllining requirements, etc., and if not required,
should they be installed. If they are to be installed, develop the plan for navigational
aids. Said Subcommittee to report back with a recomlllendation to the full Comlllittee
within 2 months. Second by Mr. Standridge.
Motion carried 6 'yes" - 2 "no." Mr. Roellig and Ms. Worley voted "no."
Mr. Arceri moved to appoint Mr. Arceri and Ms. Worley to a Subcolllmittee to work with
Staff in developing a draft document of the duties, responsibilities and Charter of the
Clam Bay Advisory Committee and possible work frame. Second by Ms. Worley. Motion
carried unanimously 8-0.
X. Public Comments
Marcia Cravens, Friends of Clam Bay recommended investigating the possibility of the
Seagate community accessing the Gulf southward through deeper water in channels already
utilized for navigation. An option is a '"lock" at Seagate to facilitate boat access to the
Gulf. In addition, she objected to any references from work by the previous Committee
(Clam Bay Work Group minutes or other documents) that was dealing with the issues
because the group was disbanded.
The Committee requested StafJdisctlss with the Subcommittee rhe Venerian Bay access
option.
Jim Burke, Pelican Bay Resident stated he was not on the Navigational Marker
Committee as indicated in the information provided by Staff
Linda Roth, Pelican Bay Resident stated the channel shifts constantly and is dangerous
and not suitable for channel marking. Seagate homeowners have not had 40 years of
boating access as the channel has been closed numerous times over the course of history.
XI. Announcements
None
XII. Next Meeting Date/Location
Tentative - February 19, 2009 - Sudgen Theater at the Regional Library, 2385 Orange
Blossom Drive, Naples
7
IOF 1
January 20, 2009
There being no further business for the good of the County, the meeting was adjourned
by order of the Chair at 5:00 PM.
COLLIER COUNTY CLAM BAY ADVISORY
COMMITTEE
James A. CarrOll, Chairman
These Minutes approved by the Board/Committee on
as presented or as amended_
"--'
v
HUMISTON
If MOORE
BNGINBBRS
1 0 F --'1 C-fZ-.
COASTAl
INGINU_ DESIGN
AND PlllMmlNG
5679 STRAND COURT
NAPLES. FLORIDA 34110
October 27, 2009
Gary McAlpin, Director
Collier County Coastal Zone Management
3301 E. Tamiami Trail
Naples FL 34112
Re: PBS&J, Clam Bay System Data Collection & Analysis, October 2009 Report
Dear Gary:
As requested we are providing comments on the modeling section of the referenced report.
The PBS&J report states that the Humiston & Moore (H&M) model was not designed as a
comprehensive model to improve the health of the entire estuary. While it is true that the H&M
model was developed at that time for a specific limited purpose, and on a limited budget, there
was also an understanding that the model was a first step toward the development of a more
comprehensive model that could be used to study more complex characteristics of the bay
system when more funds became available. The PBS&J report disregards the circumstances
under which the H&M study was conducted in describing the H&M modeling study. Following
are a number of specific comments.
The PBS&J report states "A number of critical issues limit the H&M model's ability to
function as a comprehensive model for the Clam Bay and Moorings Bay system. These
limitations include:"
"a. The model boundary ended at Seagate Drive, and did not include exchange
between Clam Bay and Moorings Bay."
Response: While this is a correct statement, it was determined for the purposes of the
required task that the limited exchange through the Seagate culverts had no significant
influence on the flow characteristics that were being evaluated under this task order, and
at that time the additional costs associated with expanding the model limits beyond
Seagate could not be justified for this initial modeling effort.
"b. The model domain does not include water movement into and then out of the
mangrove forest during normal tidal cycles and high water events. "
Response: The mangrove fringe flow is relatively small in comparison to tidal flow in the
primary bay areas and the fresh water discharge. As with "a" above, this was an
additional level of model detail that was both beyond the budget and not necessary in
order to achieve the goal of the modeling task.
lOF
"c. Only one stormwater input is included in the model's water budget. "
Response: The stormwater input that was used was the data provided by the stormwater
system design engineer and was considered to be representative of the design
discharge condition for the system, and sufficient for determining if diversion of
stormwater discharge would benefit clam Bay.
"d. The model's offshore tidal boundary was limited in both amplitude and
duration. "
Response: The model was driven by appropriate representative tides at the offshore
boundary. The model was run for typical tides to evaluate the long-term condition using
freshwater inflow rates which was the specific objective of the 2003 study. The model,
however, can be run for longer durations and other tide conditions.
"e. The model was calibrated for tidal range only, with no assessment of phase lag
or flow velocities.."
Response: The model was calibrated and verified using tide range data collected in the
three bays that make up the bay system. The model calibration and verification provided
accurate representation of the tidal flow within the system and exchange with Gulf tide
through Clam Pass.
The model also accounted for the phase lag which ranged between 1 hour to over 4
hours at various parts of the system. The large phase lag in the upper bay is consistent
with the large attenuation of the tidal range, thus calibration and verification of the model
with tidal ranges accounted for the phase lag. The model computation of velocities at
Clam Pass matched observed and measured data in magnitude and direction. ADCP
current data measurements at the inlet verified the accuracy of the current velocities
simulated by the model.
The point of these comments in response to the PBS&J report is that the PBS&J report makes
statements that imply that the H&M report was somehow deficient, when in fact the H&M report
was prepared under a limited scope and budget, to answer a specific question, which it did. At
the same time, when the H&M report was prepared, there was an understanding that there was
a likely future need to complete a more comprehensive hydrodynamic model of the entire bay
system, including expanding the model grid to the south to include Venetian Bay and Doctors
Pass, and wet/dry areas within the estuary. The H&M model can in fact be expanded to do that
in a considerably more cost effective manner than starting from scratch with development of a
new model as is recommended by the PBS&J report.
The PBS&J report also states that "Using a model such as Delft 3D would also have a
distinct advantage over RMA2. The initial modeling effort could include only 20
hydrodynamics, but Delft30 is modular such that the addition of new modeling
parameters (3D dynamics, morphology, water quality, etc.) can be added to basic 20
lOF
model framework without the need to recreate a new model. "
This is a little misleading on several levels, the most obvious being that PBS&J is in fact
proposing to create a new model. Furthermore, the RMA2 used by H&M is only one module in
the modular SMS suite, which is one of a number of commercially available modeling packages
with capabilities that are comparable to those of the Delft3D system. (SMS is a domestic
product developed and supported by the US Army Corps of Engineers and others, Delft3D is
developed by the by Deltares in the Netherlands; there are similar commercial packages
developed In Denmark, UK and others)
What is more important than the modeling tool that is employed are the capabilities, skill, and
experience of the professionals applying the model. H&M demonstrated the ability to obtain
accurate results in a cost effective manner by applying a single module of the SMS system, for
the purpose of answering a specific question for Clam Pass in 2003. It would not be necessary
to start from scratch to expand this existing model for the purpose of developing a more
comprehensive model of the entire bay system. Furthermore, the results of the RMA2 model
could be used to generate boundary conditions at the inlet that could then be used as input to
the Costal Modeling System module (CMS, another module within the SMS suite) that could
provide sediment transport and morphology for the inlet, inlet shoals, and adjacent coastline,
without having to "start from scratch" with an entirely new model, as proposed by PBS&J.
It remains unclear as to what the rationale was for specifying the requirement in the BVa for the
Clam Bay work that the respondents were required to use the Delft3D model. This narrow
specification limited the number of firms that could respond to the BVa, which seems contrary
to the purpose of the County's BVa process.
Sincerely yours,
HUMISTON & MOORE ENGINEERS
/<e-.. #U4?'t ?~~
Kenneth K. Humiston, P.E.
lOP-'$
To: Ernie Wu ( Chair of Seagate Association) from Steve Feldhaus
(Secretary and Spokesperson for the Pelican Bay Foundation) received
on Wu's telephone answering machine at 12:17 pm on May 26,2009
after Seagate decided to stay with the navigational marker plan
approved by the Clam Bay Advisory Committee
" I just heard what's happened and I feel like I've ah, been
completely sandbagged. Ah, I'm sure you have valid reasons
for doing ah what you were doing, what you're doing. I know
you're the divergent group of people that you represent ah,
but, ah I've got to tell ya, ah, ya know, we are completely
funded and we will fight this. I and particularly I had
everybody teed up ah, to resolve it, I'm now going to explain
as we were double crossed and ah there will be a pretty severe
reaction I think, ah all through the community ah, that will,
you know, we got the money and ah, we'll see whether you
got any right at all, to access, and I guarantee you that ah, we
will fight your right to get out. This is not just about markers
anymore. You are raising the stakes and you're going to have
to take the consequences. Ah, good luck. By"
hambright 9
lOF I'
From:
Sent:
To:
Subject:
Stephen M. Feldhaus [e114916276@exchange.1and1.com]
Saturday, November 21, 2009 12.27 PM
McAlplnGary
Email in error
Dear Gary,
I am sure you will delete and not circulate or use the confidential communication that was
delivered to you in error.
I would appreciate your confirming this treatment.
Best,
Steve Feldhaus
1
lOF <<1
hambrig.h!.JI
Feldhaus. Stephen [sf@feldhauslaw.com]
Friday, November 20. 2009 11:22 PM
William R. Carpenter; McAlpinGary; coranaples@aoLcom; Henry Price
James Hoppensteadt; Bob Naegele Jr.; Bob Uek; Ronnie Bellone
FW: A strategy for the way forward
From:
Sent:
To:
Cc:
Subject:
Gentlemen and gentle lady,
FYI.
Best,
Steve
From: Feldhaus, Stephen
Sent: Friday, November 20,200911:19 PM
To: Robert Diffenderfer; Andrew Baumann; ryovanovich@gcjlaw.com
SUbject: A strategy for the way forward
Guys,
I received approval today to investigate, thoroughly, the possibility of filing a lawsuit in Collier County to obtain a
definitive ruling that the protective covenants and restrictions of the Clam Bay governing documents are binding upon
the county. I also received approval to continue to expiore with Dolly Roberts how we wouid formulate and run a public
relations campaign in advance of, and in support of, our possible litigation effort.
I would like to begin discussions among ourselves about the creation of a litigation plan, a plan that I envision would
include the following (this is not a law review level litigation plan, but is rather a list of things that I think we need to
consider. The list clearly needs to be amplified and refined):
1. Identify the strategic objectives, that is, exactly what it is we want to accomplish strategically. For example, do
we want a ruling that the submerged lands in Clam Bay are owned by Collier County, and not by the State, or
do we want a ruling that the protective covenants and restrictions are binding upon Collier County, regardless
of who owns the submerged lands? We need to understand thoroughly the implications of each outcome, and
what is necessary to get there in each case, before making this strategic decision.
2. Identify the key themes for the trial, that is, what are the underlying critical and overarching themes (legal,
factual, political) that we believe the case will revolve around. This will be driven in part by our strategic
objective, in part by the law and the facts, and in part the political posture of the case.
3. What venue problems do we expect (as per our prior discussions)
4. What procedural hurdles do we foresee? For example, while failure to exhaust administrative remedies should
not be a problem, given our community's prior experience with the doctrine of ripeness, we need to evaluate
carefully all procedural hurdles that we might face.
5. Do we anticipate that the State will be brought into the action as an indispensable party? If so, how will that
affect our case, and how will it affect the way the case is conducted?
1
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6. What is our evaluation of our case? Where are our strengths and weaknesses? What additional legal research
needs to be done?
7, How are we going to present our case? What witnesses will we call? What facts do we need to establish, and
how do we plan to establish them?
8. What discovery do we anticipate wanting? What discovery do we anticipate being asked to provide?
9. How do we anticipate that the county will present its case? What witnesses will it likely call? What will the
substance of its case be?
10. Will the county handle this in the county attorney's office, or will they bring in outside counsel? Who are they
likely to hire, and what affect is that participation likely to have on the course of the litigation?
11. If the State is brought into the litigation, how do we anticipate that the State will present its case? What
witnesses will it likely call? What will the substance of its case be?
12. What do we know about the judges to whom the case would be assigned? How are cases assigned?
13. How should a public relations campaign tie into the possible litigation?
14. How long will each phase of the litigation likely last? What is the likely range of costs for each phase of the
litigation?
15. What is the downside of bringing such a suit? Is there a way we could lose something even if we win the suit?
For example, what happens if there is a ruling declaring the State the owner of the submerged lands, and
holding that the protective covenants and restrictions are valid with respect to the submerged lands.
16. What happens if we lose and there is a ruling holding that the protective covenants and restrictions are not
valid with respect to the submerged lands? Does it then matter to us whether the state or the county are
found to own the submerged lands?
17. Is there any risk of a holding that (i) the county is declared the owner of the submerged lands, and the
protective covenants and restrictions are held not to be valid with respect to both the submerged lands and the
uplands, or (ii) the State is declared the owner of the submerged lands, and the protective covenants and
restrictions are held not to be valid with respect to both the submerged lands and the uplands?
I could extend this list, as I am sure each of you will be able to do. Let's plan to talk next week to discuss each issue and
to divide up responSibility as we begin to get our hands around these issues.
Best,
Steve
2
CONCLUSIONS
10 F ,,~
1. Excessive dredging beyond what has been engaged in
under the CBRMP will lead to serious beach erosion to
the beaches to the north of the Pass which will result in
otherwise unnecessary beach restoration which in turn
leads to wasted TDC dollars to the tune of millions.
2. Management of Clam Bay and Clam Pass should be
returned to PBSD - an entity proven to be qualified and
competent to handle the job professionally and cost
effectively.
3. DEP should not approve this permit without reviewing
the 11 years of successful Clam Bay maintenance
under PBSD, which will establish that what is being
asked for by the County is without merit.
4. Specifying Delft3D modeling is costly and unnecessary.
Existing modeling supporting the existing level of
dredging, which has been a success, should be relied
upon.
5. The county's bidding process should be audited to
determine compliance with the CCNA.
Therefore, based on the totality of the facts,
Commissioners, we ask that you vote "NO!" on what is
before you.
(
lOF- CJ\
The Mangrove Action Group Inc.
P.O. BOX 770404
Naples, FL 34108
2,108 signatures
The Mangrove AClion Group launched a Petition drive to show that there is strong
community desire to keep the Clam Bay Wetlands in it's Natural unaltered state. This
petition reads as follows:
"We, the undersigned, support the County's goal to provide more beach access
at Clam Pass Park. WE OPPOSE THE CURRENT PLANS THAT WOULD
DEGRADE THIS SERENE NATURAL RESOURCE PROTECTION AREA
WITH SIGNIFICANT CONSTRUCTION IN UNDISTURBED MANGROVE
HABITAT, DREDGING OUT THE EBB SHOAL, INSTALLING CHANNEL
MARKERS, OR OTHERWISE ALTERING ITS SHALLOW THREE BAY
SYSTEM. "
Volunteers quickly and easily collected 2, 108 signatures from people who value the
Clam Bay/Clam Pass preserve. We urge you to consider strong opposition to proposed
projects in the Clam Pass Natural Resource Protection Area evidenced by the signalures on
this petition. We urge you to responsibly consider compatible uses of this mangrove and
seagrass vegetated wetlands and wildlife preserve that includes the Clam Bay /Clam Pass
shallow waterways that are critical habitat for marine, avian and terrestrial wildlife, including
Endangered, Threatened and Species of Special Concern.
1f~~ (td~/0
Marcia Cravens, President Mangrove Action Group
Restore Transparency and Accountability to the
Management of the Clam Bay System
lor
(rJ
.
1
Comments on
PBS&J .Data Collection and Analysis. and .Circulation/Flushing Modeling. Studies
and Implications for Management of the Clam Bay Estuary
Comments
Submitted to the
Board of County Commissioners of Collier County
Meeting of December 15, 2009
By the
Mangrove Action Group of Pelican Bay
1. The basic premise of this project - "To address alarming increases in the degradation of
water quality in Clam Bay. - is false, and was known to be false at the outset (see the
2007 "Seagrass" study by the same consultants). Nothing in the current PBS&J report
indicates otherwise. What is shown in the "Data Collection and Analysis" report are
modest. occasional impairments that are not inconsistent with normal conditions of
mangrove ecosystems.
2. The cost to local taxpayers of undertaking this unneeded work by PBS&J exceeds the
initially requested $265,000 and continues to rise. now approaching $300,000.
3. This study has been driven by a confluence of interests aimed at dredging sand for beach
renourishment, expanding motorboat access, and solving water quality problems in the
larger region. The potential negative impacts of all of these activities on Clam Bay itself
are ignored.
4. The email record shows that during the planning meetings leading up to the creation of
the Clam Bay Advisory Committee and this project, the need to benefit water quality in
Moorings Bay was openly discussed as one of the goals by the PBS&J consultants and
members of the "Estuary Working Group," including officials on the Coastal Advisory
Committee with current oversight of the project.
5. The true purpose of this project has been obscured by confusing nomenclature. A new
term-the Clam Bay "estuary" -has been introduced and is being used interchangeably
with "Clam Bay" or "Clam Bay System." Sometimes-as in the County ordinance
establishing the Clam Bay Advisory Committee (2008-43}--it clearly refers to the 570-
acre Natural Resources Protection Area historically known as Clam Bay. But increasingly,
as exemplified in this study, it has come to include not only Clam Bay, but the entire
stretch of shoreline from Seagate south to Doctor's Pass-the areas more commonly
known as Venetian Bay and Moorings Bay.
6. Under the guise of "restoring" Clam Bay, this study is laying the groundwork for solutions
that would actually do the opposite. The "water circulation/flushing" modeling that is the
next step will look at ways to increase the flow of Clam Bay's clean water south through
Moorings Bay. Options under consideration include expanding the dredge cut at Clam
Pass, dredging the Clam Pass ebb shoal, and opening up the culverts at Seagate. Prior
studies have already considered and recommended against these alternatives because
of the unavoidable damage that would result to the Clam Bay system (see Florida Dept of
Environmental Regulation, 1981; Humiston and Moore, 2007, 2008).
7. The data on water levels and flow velocities collected by PBS&J for use in the modeling
effort are suspect because of the limited duration of the data collection (eight days or
less), faulty and vandalized equipment, and the decision to exclude certain data,
including readings from Clam Pass itself. Yet this scanty and questionable data will now
be used to "calibrate. the circulation/flushing model and in turn a .sediment bypassing"
model to run simulations of actions to .improve. circulation.
.
lOF
.
8. The real-world ramifications of relying on faulty data and modeling are potentially
disastrous. They could include "de-watering" or draining Clam Bay (a long-recognized risk
of opening up connections to the south, due to the strong ebb tide through Doctor's
Pass); accelerated beach erosion from expanding the dredge cut or dredging the ebb
shoal at Clam Pass; damage to sea grasses and the marine environment from expanded
channel dredging; and overall destabilization of the mangrove ecosystem. These risky
measures are obviously not in the interests of the Clam Bay ecosystem, despite its being
the ostensible target of concern.
9. According to the latest "Clam Bay Advisory Committee Status Report," the circulation
study and modeling are aimed at "optimization of the entire system" to "enhance
estuarine wildlife." Yet the assessment of plant and marine life in Clam Bay that was
supposed to be part of the data collection was downgraded to a sampling of "redox" or
reduced oxygen levels in the sediment, as a stand-in for actual biological evaluation. So
the modeling is going forward, without evidence of any biological need for it
10. The Clam Bay system has been well-managed as a conservation area for more than a
generation-protecting the shoreline, providing wildlife habitat, and attracting paddlers
and nature lovers from throughout the region. It also attracts visitors and seasonal
residents to the surrounding residential neighborhood, generating hefty support for
Collier County's tax base and tourism industry. Yet the Pelican Bay Services Division has
been forced to relinquish its careful and successful stewardship of this area, despite
these demonstrable benefits to the community at large.
Conclusions and Recommendations
This project suffers from a lack of transparency and fails to address the true water quality
problems that threaten Collier County's coastal waterways outside of Clam Bay. In the interest of
restoring integrity to the planning process, ensuring accountability in the expenditure of public
funds, and promoting sustainable solutions to the region's water quality problems, the Mangrove
Action Group requests the Board of County Commissioners take the following actions:
Recommendation 1. Redirect the remaining funding for modeling to a study of
alternatives other than "solution by dilution" that would focus on the need for stormwater
management throughout the watershed, reduction of pollution at the source, and
reduction of stormwater discharges directly into the coastal waterways. An extensive
stormwater control system is already in place for Clam Bay that prevents direct
discharges into the Clam Bay NRPA. It is the neighboring waterways, with their extensively
altered "hardscaped" shorelines, that need to catch up. Reframe federal funding
requests to more appropriately reflect these local needs, rather than false alarms of
degradation of Clam Bay.
Recommendation 2: Reject any solutions that would compromise the environmental
values of the Clam Bay Natural Resources Protection Area by altering its essential
character as a shallow, meandering estuarine system and nature preserve.
Recommendation 3: Restore the management of the Clam Bay NRPA, including inlet
management, to the Pelican Bay Services Division. The PBSD has successfUlly restored
areas of mangrove diEXlff and gained extensive experience with tidal flushing
management over nine years, learning how best to maintain equilibrium conditions that
reduce the need for frequent dredging while providing the flUShing necessary for a
healthy system.
Recommendation 4: The highly successful 1998 Management Plan for the Clam Bay
NRPA should be updated with input from local environmental organizations and habitat
and wildlife specialists, rather than being the product of a single consultant, so that it
represents the best wisdom on how to manage this unique conservation area for the
future.
(i ) Cct)
Pelican Bay Services Division
Naples, Florida
DRAFT CLAM BAY MANAGEMENT PLANl 0
Turrell, Hall & Associates, Inc. F
August 29, 2007
Sampling Locations:
.Cll,AIf.......iOCM,..
"'-"..........:..-...- '-' -
..........~-....... ..............LI-.....-.. """.....- --,,-------------..---.--
w.iltl:.......~.---~ '--"~.......~,........., T _.-- .".~u__~_"'-..-.--
~ ~-:=-c::=~~~ FIGURE 5- WATER SAMPLE LOCATIONS -=-. _,_~_
-
-': ....
~-..;,........
--...-
--
Timeframe:
Monthly sample collection to be analyzed by a state-approved lab for the duration of the permit.
Annual collation of results.
Performance Criteria:
No negative change in desiguation of water bodies should be observed, i.e. at least the minimum State
standards (per 62.302.530 F.A.C.) for each parameter should be maintained.
Responsible Personnel:
PBSD for sample collection and processing
- 41-
[;r? T~ IZ: CUZ 0
( ;;J) (6 J
10F-c:~
CLAM BAY
MANGROVE MANAGEMENT PLAN
(DRAFT)
Presented to
COLLIER COUNTY; PELICAN BAY SERVICES DIVISION
May 21,2008
FOR APPLICATION TO:
THE CLAM BAY MANGROVE MAr."iAGEMENT PROGRAM
STATE AND FEDERAL PERMITTING AUTHORITIES
USACOE SECTION 404 PERMIT
FDEP ENVIRONMENTAL RESOURCE PERMIT
FDEP JOINT COASTAL PERMIT
FDEP SOVEREIGN SUBMERGED LANDS AUTHORIZATION
lor t1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
TABLE OF CONTENTS
1.0 Introduction
Purpose, scope, of revised management plan.
Differences / additions from original plan
Personnel/consultants responsible
Role of Pelican Bay Services Division
2.0 Clam Bay Location and Setting
Maps, description of Pelican Bay and the estuary system
Natural history and habitats within ecosystem
3.0 Historical Overview
Historical time line
Original mangrove die-off causes
Restored characteristics of Clam Bay
4.0 Authorized Construction Activities
List of permits and work undertaken to date
5.0 Monitoring Work
Summary of annual report results
6.0 Management Objectives
Management action/work required, performance criteria and monitoring, responsible
entities, timeframe
6.1 Maintain Optimal Hydrographic Environment at Clam Pass (continue monitoring
with maintenance work as required)
6.2 Maintain Optimal Hydrographic Environment of Tidal Creeks (continue
monitoring with maintenance work as required)
6.3 Maintain Optimal Hydrographic Environment of Interior Channels (continue
monitoring with maintenance work as required)
6.4 Maintain stormwater management system, including the berm/mangrove interface
6.5 Manage and Improve Water Quality (continue monitoring, implement green home
type improvements)
6.6 Monitor Ecosystem Communities
6.7 Monitor Mangrove Communities
6.8 Exotic and Nuisance Vegetation Control (address cattails and other issues)
6.9 Continue and Improve Community Awareness and Involvement (recreational
opportunities, annual meetings. informational/education materials etc)
lOP '1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
1.0 Introduction
The Clam Bay estuarine system is a 570-acre area of sandy beaches, shallow bays, seagrass beds
and mangrove forests on the coast of Collier County in southwest Florida. The community of
Pelican Bay abuts the northern and eastern edges of the system, while the Seagate and Naples
Cay communities abut the southern portion of the system. The Clam Bay estuarine system is an
important natural and recreational resource for local residents and visitors.
This plan, in addition to providing a brief history of activities undertaken within this system,
outlines management goals, objectives and methods to achieve optimal functioning of the
delicate mangrove system. Drawing on an earlier plan (The Clam Bay Restoration and
Management Plan prepared by the firm of Wilson Miller Barton & Peek, CBRMP 1998), and the
findings of nine years of monitoring activities within the system, this plan outlines the goals for
future enhancements to, and maintenance of, the mangrove ecosystem throughout Clam Bay.
The Clam Bay Restoration and Management Plan. 1998
In 1992 a small area of dead black mangroves was first observed in the northern part of the
system. In 1995 a significant area (approximately 50 acres) of dead and dying mangroves was
reported (Turrell, 1996). Following the die-off, restorative dredging was proposed to increase
tidal flushing by opening up the pass and widening several tidal creeks within the system. The
CBRMP was prepared in conjunction with State and Federal environmental permits to carry out
the work, and consequently focused on management objectives which were proposed at that
time, namely;
· Deepening and Maintaining Clam Pass
· Dredging portions of the interior tidal creeks to improve flushing capacity
· Studying the potential for improvements in upland stormwater/freshwater management
· Installation of flushing culverts under Seagate Drive
The Clam Bay Mangrove Management Plan. 2008
The Clam Bay Mangrove Management Plan (CBMMP, 2008) combines the comprehensive
outline and background provided in the original plan with lessons learned over the nine-year
implementation period. The goals of this Plan will be to direct the management activities
undertaken to enhance the mangrove habitats in a manner that maintains and contributes to the
overall integrity of the Clam Bay ecosystem. Namely, the activities undertaken under the Plan
will:
. Maintain hydrology and efficient tidal flushing throughout the system;
· Continue the restoration progress of the mangrove stress and die-off areas;
· Enhance and maintain the viability and integrity of the mangrove ecosystem;
2
IOF'"
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
· Maintain the stormwater discharge and surface water management necessary to support
the Pelican Bay community;
. Maintain a review process to determine, where feasible and/or practicable, whether
management activities in support of the ecosystem can or should be implemented;
· Maintain the recreational and aesthetic values inherent in the system;
· Continue to educate and inform residents and visitors about the importance of the
ecosystem.
Personnel/consultants responsible
This CBMMP has been prepared by the firm of Turrell, Hall & Associates, Inc., who, as project
managers for the restorative dredging and associated monitoring work has a long history with the
project and ecosystem. Input and monitoring data has been incorporated from coastal engineers,
Humiston & Moore, Inc. and restoration consultants Robin Lewis & Associates Inc, as well as
other interested stakeholders such as the Mangrove Action group, the Seagate Community, and
the City of Naples. The ongoing support and assistance of the PBSD and Collier County is
gratefully acknowledged.
Pelican Bav Services Division
Coleman Connell- Chairman
801 Laurel Oak Drive, Suite 605
Naples, FL 34108
(239) 597-1749
Turrell. Hall & Associates
Tim Hall- Project Manager
3584 Exchange Ave
Naples, FI 34104
(239) 643-0166
Lewis Environmental Services
Robin Lewis- Project Manager
23797 NE I 89th Street
Salt Springs, FL 32134
(352) 546-4842
Humiston & Moore Enl!:ineers
Ken Humiston - Project Manager
5679 Strand Court
Naples, FL 34110
(239) 594-2021
Pelican Bay Services Division
In order for the management of Clam Bay to be successful and the mangrove condition restored
to fully recovered status, coordination between a myriad of local, state, and federal agencies and
concerned citizen's groups is required. The Pelican Bay Services Division (PBSD) has
undertaken that role for the past ten years.
The PBSD is a dependent special district known as the Pelican Bay Municipal Services Taxing
and Benefit Unit. It was formed pursuant to Chapter 125 of the Florida Statutes and was
formally enabled by the Collier County Commission pursuant to Ordinance numbers 90-111 and
91-22. This MSTBU was created to, among other things, provide for the maintenance of
conservation and preserve areas within Pelican Bay. This responsibility has been undertaken
diligently for the past ten years under the previous Management Plan and is consistent with the
goals and objectives proposed under this Management Plan.
3
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CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services ~ivision
May 15,2008
As a dependent special district, the PBSO is an arm of local county government and as such does
not enjoy the ability to make decisions concerning the implementation of the Management Plan
independent of the desires of the Collier County Commission. The PBSO budget, and therefore
its ability to undertake work projects, is controlled by the Collier County Commission. In
practical application, this has not proved problematic, as the Commission has routinely approved
the mangrove management undertakings of the PBSO and the Commission has authorized this
permit application and Management Plan. The PBSO implements County policy within the
confined geography of the Pelican Bay community and the defined responsibilities of the PBSO.
The PBSO sets it own budget and agenda and routinely submits same to the Collier County
Commission for approval. The actual workings of the relationship suggest therefore, that the
PBSO has experienced a significant degree of practical autonomy and that this is expected to
continue in regards to the implementation of this Management Plan. The result is that the PBSO
will be the official manager of this Management Plan with delegated authority to be implemented
consistent with Ordinances 90-111 and 91-22 of Collier County.
The PBSO will direct this Management Plan and have the responsibility for its implementation
and operation over time. As such, the PBSO will plan and implement defined management
activities whose purpose will be to protect, enhance and maintain the mangrove community and
ecological integrity of the Clam Bay estuary.
The PBSD has several attributes which already make it a logical guiding force in the
management of Clam Bay. The PBSO:
· Is located within the Clam Bay drainage basin;
. Has an advisory board (appointed by the County Commission) made up ofresidential,
and business members within Pelican Bay;
· Garners fiscal support collected from local benefit assessments;
· Is accessible by the public due to its local governing board and advertised public monthly
meetings;
· Has demonstrated a long-term commitment to the resource and its preservation and
enhancement over the past ten years.
These attributes give PBSO the knowledge and expertise in matters of local concern and, in
particular, the problems, opportunities and interests oflocal residents as they relate to the Clam
Bay ecosystem. Its relationship by operation of law to the County Commission give it an
additional level of access to technical expertise and oversight that is necessary to assure that the
Management Plan, as contemplated in this document, is fully implemented in the field.
As part of its responsibilities, the PBSO will assemble and distribute various technical reports
and assessments as required under the Management Plan, as well as coordinate with the other
public and private groups interested in Clam Bay. The PBSD is organized for and designed to
maintain both its knowledge of the Clam Bay resources and to generate public support for the
same. PBSO will insure that the general public, residents in Pelican Bay, PBSO consultants, and
representatives from government agencies with jurisdiction over Clam Bay each have on-going
involvement and input into the Management Plan as appropriate.
4
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CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
2.0 Clam Bay Location and Setting
Maps. description of Pelican Bay and the estuary system
Clam Bay was designated a Natural Resource Protection Area by the Board of County
Commissioners of Collier County in 1994 (Collier County, 1994) and consists of approximately
420 acres of mangroves and some 115 acres of shallow, open water bays, as well as a 35 acre
beachfront parcel (Clam Pass Beach Park). The system consists of three primary bays; Outer
Clam Bay (southernmost), Inner Clam Bay (central), and Upper Clam Bay (northernmost),
connected by a series of tidal creeks.
The entire system receives runoff from adjacent upland and wetland areas. Upper Clam Bay is
connected to Inner Clam Bay by a winding narrow creek. Inner Clam Bay is connected to Clam
Pass through another narrow creek. Outer Clam Bay is connected to the Gulf of Mexico by a
wider creek through Clam Pass. Some water also flows south to Doctor's pass through the
culverts under Seagate Drive.
Clam Bay Vital Statistics
Total acres: Approx. 570 acres
Beaches: Approx. 3 miles
Mangrove: Approx. 420 acres
Open Water: Approx. 115 acres
Latitude and Longitude of Pass. N 260 13' II", W 810 49' 0 I"
Section, Township, Range. Sec. 32 & 33, Twp 48S, Rug 25E, &
Sec. 4, 5, 8, & 9, Twp 49S, Rug 25E
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Clam Pass is a small, marginally stable inlet that has migrated north and south along the shore
over the years. Prior to dredging, average water depths were -2.5' to -l.0' with a width of30-50'
(Collier County, 1994). The Pass remains the primary source of tidal exchange for the Clam Bay
system, but it is restricted by sediment deposits just inside the pass and in the long meandering
tidal creeks surrounded by mangrove forests. The smaller embayments located primarily to the
north of the pass are not subject to normal tidal exchange except during exceptionally high tides.
Tidal range is restricted throughout the Clam Bay system (Turrell 1995; Collier County Report
1996; Tackney 1996).
Tide gauges are installed and monitored on the County boardwalk at the north end of Outer Clam
Bay, the north and south Pelican Bay boardwalks, and in Upper Clam Bay. These gauges
indicate that the dredging done at the pass and in the interior creeks has drastically improve the
tidal exchange throughout the system. Tidal ranges vary from 2 feet out in the Gulf to 1.5 feet in
the southern portion of the system down to about 0.5 feet at the northern end of the system.
South of Clam Pass, a channel oriented north-south with water depths varying between -1.0' to _
4.0' leads to Outer Clam Bay (approx. 72 acres), itself connecting to the Venetian lagoon system
via a couple of concrete culverts under Seagate Drive. There are also three dead end canals off
the south end of Outer Clam Bay that are associated with the Seagate community.
North of Clam Pass, a long narrow (approximately 6,600') tributary leads to Inner Clam Bay
(approx. 32 acres). Evidence in the literature suggests that oyster bars were once present in this
channel (Humm and Rehm, 1972). A further, narrow creek (5,400') leads north from Inner Clam
Bay to the smallest and most isolated; Upper Clam Bay (approx. 20 acres).
Historical aerials and anecdotal recollections from long-time County residents note a connection
of the system at Upper Clam Bay to Vanderbilt Lagoon and Wiggins Pass to the north via a small
creek (Collier County, 1994, Tropical Biolndustries, 1978). This connection was eventually
severed with the development of Vanderbilt Beach Road in the 1950s.
The system is bounded on the north by Vanderbilt Beach Road, to the south by Seagate Drive, to
the east by the Pelican Bay development and to the west by the Gulf of Mexico.
Pelican Bay is predominately a residential community of private single-family homes, as well as
both high and low-rise condominium units. The community also includes a golf course, common
areas with meeting rooms, tennis courts, beach park facilities, emergency services facilities, and
commercial areas with shopping and hotels. The 2,104-acre Planned Unit Development (PUD)
was approved in 1977 as a partnership between Collier Enterprises and Westinghouse
Communities. It was one of the first developments in Florida required to save fragile coastal
wetlands and associated ecosystems (Urban Land Institute, 1981). The development of Pelican
Bay had a limited impact on the wetlands themselves (approximately 94 acres in total with about
78 of those acres located in the northwestern corner of the property) leaving the mangrove forest
intact and preserved around the bays. As mitigation for these wetland impacts, the 35 acre beach
park was donated to Collier County.
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Development landward of the mangroves required a stormwater management system designed to
spread runoff along the eastern edge of the Clam Bay estuary (Collier County Report 1996). A
four to six foot high and 2 II, mile long berm separates the developed portion of Pelican Bay
from the estuary lying to the west of the development, but numerous culverts through the berm
discharge water to a swale system along the eastern perimeter of Clam Bay. The eastern edge of
Pelican Bay is about 12-14 feet above sea level at US 41, sloping in an east-west direction to
about 2 feet near the berm. Six drainage basins operate on a gravity system to slowly move
surface water into the receiving area of Clam Bay.
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Approximate locations of Drainage Basins within the Pelican Bay Development (photo is oriented with east up and
north to the left).
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Natural History
Prior to development, the entire coastline of south Florida would have resembled the Clam Bay
system with meandering mangrove lined waterways buffering sandy barrier islands and
terrestrial communities. Unique within the moderately developed coastal community of Collier
County, Clam Bay is a valuable resource for wildlife (particularly juvenile marine species and
birds) as well as residents and visitors to the area who enjoy the recreational opportunities the
system offers such as kayaking, fishing, walking, bird watching, beach going, and others.
The system is a mixture of mangrove-lined tidal creeks, mangrove forests, shallow bays and tidal
passes, seagrass beds, tidal flats, sandy beaches and brackish interior wetlands. A man-made
water management berm now divides natural and developed portions where historically
mangrove forest would have transitioned gradually into the mesic coastal hammocks and upland
pine scrubs that made up the now developed portions of the Pelican Bay community.
A brief overview of these important habitat types, their key characteristics and value is provided
for reference below.
Mangroves
Mangroves are salt tolerant trees that grow in tidal ar.eas of the tropics and are legally protected
for their ecological value, with such functions as;
· Providing habitat for marine and terrestrial wildlife.
· Protecting coastal areas from storm surges and coastal erosion.
· Acting as a natural filter for land based freshwater run-off.
· Forming the basis of an incredibly productive estuarine food chain which includes many
commercially valuable species.
Three species are common in Florida as far north as Cedar Key and St. Augustine, where cold
winter temperatures limit their range. All have special biological adaptations to cope with salt
and unstable, mucky, low oxygen soils that result in a tidal, hence continually waterlogged
environment. The dominance of mangroves in tidal areas is a function of these adaptations and
hence their ability to out-compete other wetland plants.
Red mangroves (Rhizophora mangle) are recognized by their tangle of reddish looking prop
roots, long cigar shaped seedlings (the propagules which can be seen in the summer months) and
their large, pointed evergreen leaves. They are typically the most seaward of the three species
with the prop roots and vertical drop roots providing support, small pores on the trunks called
lenticels allow oxygen exchange via air as the waterlogged soils become rapidly oxygen
depleted. Salt is excluded from the plants cells through a process called ultra-filtration in the
roots. The characteristic propagules germinate on the parent tree and drop and float for up to a
year, finally becoming heavier at one end so that when encountering a suitable substrate they are
ready to root upright. Good tidal flushing is essential for healthy development of red mangroves,
to prevent the build up of toxic metabolic waste products in the mangrove soils. The mass of
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prop and drop roots forms extensive surface area under water for attachment of sessile, filter
feeding marine species (such as sponges, tunicates and mollusks) as well as hiding places for
juvenile fish. Birds, butterflies, insects and mammals find home and food within the canopy.
Fall and breakdown of Red mangrove leaves is the start of productive estuarine food webs.
Black mangroves (A vicennia germinans) are typically found slightly further inland and key
identification features include the snorkel like pneumaptophores which radiate upwards out of
the soil from the base of the trunk, a grey-black rough bark and slightly pointed, oval leaves
which are silvery with salt deposits on the undersides. The pneumatophores play an important
role in oxygen exchange and unlike the Red mangroves, which keep salt, out of body cells, the
Black mangrove excretes salt onto the backside of the leaves. They are also reliant on adequate
tidal exchange but lack the supporting prop roots that typify the Red mangrove. Small white
flowers and small lima bean shaped propagules are apparent during the summer months and, on
falling from the parent tree, float for a short period and establish in the mucky soiL
Often, (although zonations described are typical and frequently vary) found further inland again
is the White mangrove (Laguncularia racemosa). Occurring in drier areas they do not exhibit
the adaptations to soft, anaerobic soil of the other species. The bark is characteristically grooved
and furrowed and leaves are oval, mid-green and leathery with two small glands on the petiole at
the base of each leaf which are responsible for salt excretion. White mangroves also flower in the
spring and early summer and the small seedlings have the shortest floating dispersal stage of the
three species.
The Buttonwood (Conocarpus erectus), which is considered a mangrove associate, occurs
further inland still than the White mangrove. Small, round, brown seeds give rise to the name
. and it is a hardy species, able to withstand the full sun, high temperatures and salty conditions of
coastal Florida. These characteristics also make it an excellent and attractive landscaping plant.
Creeks
On the seaward edges of small islands and the tidal creeks, passes and estuarine wateIWays that
make up the Clam Bay system, a fringe of Red mangroves will be found growing up to 25 feet in
height. This zone can be just one or two trees in depth or extend landward for some distance,
depending on topography. The habitat provided by the prop roots ofred mangroves is of great
importance to many fish and tidal creeks are popular fishing spots.
Forests
Much of Clam Bay is comprised ofIow-lying basin forests and the dominant species is the Black
mangrove. Tides inundate these areas via small surface wateIWays. Subterranean SOUTC es of
water are also important. Tidal flushing allows nutrients to be distributed within the fores t and
provides for the transportation of dead leaves, twigs, etc. As this material decays, it bec()mes
food for marine life. It is this mangrove detritus which is consumed by the many organisms at
the base of the food chain and which in turn create the next level of the food chain necessary to
support the fish populations that characterize the mangrove community. Associated plants
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include the succulent groundcovers Saltwort (Batis maritime), Glasswort (Salicornia
cervicornis), (especially where a fallen tree provides a break in the canopy and light penetration
to the forest floor) and, further inland and closer to freshwater sources, the Leather fern
(Acrostrichum danaefolia).
Tidal Passes
The Clam Bay system was originally part of a larger tidal system connected to the Gulf of
Mexico by three tidal inlets; Wiggins Pass, Clam Pass and Doctors Pass. During the 1950's and
60's this system was isolated from adjacent bays by the construction of Seagate Drive to the
south and the construction of Vanderbilt Beach Road to the north. The practical effect was to
leave Clam Pass as Clam Bay's only connection to the Gulf. The exchange of seawater between
Clam Bay and the Gulf is critical to the ability of the mangrove forest to export organic matter,
as well as excess salt and freshwater. It also supplies oxygen rich water and nutrients from the
Gulf. The greater the tidal amplitude (or tidal prism) the greater the benefit to the mangroves _
more needed resources are delivered and more wastes are removed. Conversely, in the absence
of surface water circulation or tidal activity, mangroves slowly die due to deleterious changes in
the sediment: I) in the absence of oxygenated water, the sediments become anaerobic or anoxic,
and 2) metabolic wastes and hydrogen sulfide accumulate in the anoxic sediment (CBRMP,
1998).
Tides in the Gulf of Mexico are mixed, with the norm being two high tides and two low tides
experienced per day and normal amplitude (range) of approximately 2 feet. The highest tides
(springs) are experienced twice per lunar month at full and new moons when the gravitational
pull on the earth's surface waters is greatest. Neap tides also occur twice per lunar month when
the planetary (gravitational) influences of earth, moon and sun are perpendicular.
CLAMIlAY f1DAl MANGeS
i
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Exhibitfrom 2007 Clam Bay Monitoring Report
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U""rrR C-AW Bn
r,.- (,.&'.1(;F
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Tide Gauge Locations
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It can be seen that the health of mangrove forests is directly related to the efficiency of the tidal
passes. These are dynamic creeks whose location vary annually and, as illustrated by Clam Pass,
can periodically close such as has happened at least four times in the last 25 years (Turrell 1995;
Tackney 1996).
Tidal creeks are passageways for fish and marine invertebrates between the open waters of the
Gulf and the protected embayments of Clam Bay. Manatees and turtles may also use the passes.
Scouring action of the fast flowing tide generally prevents colonization by seagrasses and other
benthic plants and the substrate is typically sand and shell with the finer sediments carried in
suspension and deposited just outside the mouth of the pass (the ebb shoal delta) or to the interior
of the system on the incoming (flood) tide.
Oyster Bars
Oysters (Croassostrea americana) are filter-feeding bivalves, which were once common within
the tidal creeks of Clam Bay. They can form extensive bars and as such slow water movement
and commence the development of small islands. The surface area provided by their convoluted
shells provides habitat for many other marine species. Deteriorating conditions related to closure
of Clam Pass is thought to have resulted in the disappearance of oyster bars in the system;
though some re-occurrence has been observed to the south of the pass in the last few years
during seagrass transect monitoring. Oysters have been documented around the perimeter of
Outer Clam Bay in the past two years monitoring efforts.
Tidal Flats
The sand and mudflats that are exposed at low tides are rich feeding grounds for many species of
wading birds. These organically rich sediments support a variety of mollusks, worms and
invertebrates that scavenge detritus or, in the case of many bivalve mollusks, extend siphons at
high tide and filter vast quantities of water. Birds such as a variety of herons, ibis, egrets and
spoonbills pick through the sediment for the invertebrate food sources.
Seagrass Beds
Seagrasses are flowering marine plants of shallow, tropical regions. With a creeping growth
form connected by horizontal rhizomes they serve to trap and anchor sediment. Both the grass
blades themselves and the surface area they represent provide food and attachment for marine
species and seagrass beds are renowned for their value as nursery habitats.
Several areas within the Clam Bay system host seagrass beds, specifically Outer Clam Bay and
wateIWays just inside Clam Pass. Three species are common in these southwest Florida waters;
the largest Turtle grass (Thalassia testudinum) with flat strap shaped leaves, the smaller shoal
grass (Halodule wrightii) with narrow, flat blades and Manatee grass (Syringodium filiformis)
with cylindrical blades. Of these three species only shoal grass and turtle grass are found in
Clam Bay. Shoal grass is by far the most common though small areas of turtle grass are also
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present. Also common in Clam Bay is Paddle grass (Halphila decepiens) which is usually more
indicative of brackish water. Paddle grass is much more ephemeral in nature and diligence is
required to be able to locate it during the time frames when it is present.
Seagrasses rely on good light penetration to enable photosynthesis and are sensitive to reduced
tidal water quality. Growing in shallow regions they are also vulnerable to physical damage by
boats. A variety of marine algae can be associated with grass species, differing in the lack of a
true rooting and vascular system. Several species of both brown and green alga have been
observed.
Sandy Beach
In addition to the 35-acre Clam Pass Beach Park, south of the pass, sandy beach also extends
north all the way to Wiggins Pass. Shorebirds feed on marine invertebrates such as coquina
clams and mole crabs at the water's edge and beaches are crucially important habitat for nesting
sea turtles. Coastal plants colonizing the dunes are key players in trapping windblown sand and
preventing coastal erosion as the first defense against heavy winds and surge of tropical storms.
Species common on the beaches of the Clam Bay system include; Sea oats (Uniola paniculata),
Seagrape (Coccoloba uvifera), Cabbage palm (Sabal palmetto), Buttonwood (Conocarpus
erectus) and Railroad vine (Ipomoea pes-capra!!).
Hardbottom Communities
Another important marine habitat associated with the estuarine system is the hard bottom reef
community found just seaward of Clam Pass. In about 10-15 feet of water a variety of sponges,
stony corals, gorgonians, fish and associated invertebrates can be found within a system of rocks
and ledges. Outcroppings of similar habitat type occur along the length of Collier County and
are a little known resource of regional significance.
Brackish Marsh
At the interface between forested mangrove areas and the water management berm are
depressional areas that have become colonized by aquatic freshwater plants such as cattails
(Typha latifolia), Carolina willow (Salix caroliniana), Bulrush (Scirpus californicus),
Needlerush (Juncus romerianus) and Leather fern (Acrostichum danaeifolium). Wildlife such as
otters (Lutra canadiensis), alligators (Alligator mississippiensis), various turtles, and wading
birds can be commonly observed. These areas require regular maintenance to prevent the spread
of nuisance and exotic plant species and ensure optimal functioning of the water management
system.
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3.0 Historical Overview
Original land use, development history, die-off and restoration work
To properly understand and successfully implement proposed management objectives, actions
and events, which have lead to the current, situation in Clam Bay should be described. This
chapter starts off with a time-line to most clearly portray the system in its historical context. It is
intended as background information and as a factual recount based on personal experiences and
comments, press reports, published and unpublished reports. The chapter finishes with an
overview of the mangrove die-off induding causes, and the work that has been undertaken so far
as part of the last Clam Bay Restoration and Management Plan to restore the system.
Time Line
1920
A dirt road is built by Forest Walker running from the north-east to south portion of Pelican Bay,
a forerunner of US 41.
1950
With 6,000 residents of Naples, Clam Bay is part of a connected system of barrier islands,
mangrove passes and waterways. The orientation of the beaches and passes would have changed
seasonally and with storms
Late 1950's
Vanderbilt Road is constructed severing connection with the Wiggins Pass system to the north.
1958
Seagate Drive is constructed as the Parkshore community is developed. Flow is blocked into
Venetian Bay to the south.
Circa 1960 Aerial Photograph
Circa 1958 Aerial Photograph
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1972
Tri-County Engineering produces reports:
· An Ecological Study of the Clam Pass Complex is published by Humm & Rehm
· Hydrographic Investigation of the Clam Say System
Coral Ridge-Collier Properties, Inc. (a partnership between Westinghouse and Collier Properties)
acquired the property and initiated development of Pelican Say.
1974
Pelican Say Improvement District is formed to manage common property in Pelican Say and
provide for long term sustainable infrastructure.
1976
Three, bi-directional 24-inch culverts are placed under Seagate Drive to provide hydrologic
connection to Venetian Say.
Report "Environmental Assessment for Development Approval" is prepared for Pelican Bay.
Clam Pass closed in and then was re-opened by'dragline.
1977
Pelican Say Planned Unit Development is approved and construction commences.
1977-1979
Gee & Jensen Hydrographic Engineers conduct a series of tidal studies within the system and
distribute "A hydrographic study of Clam Say system" in 1978.
1978
Tropical Sio-Industries produce a report: Carbon Flows in portions of the Clam Pass estuarine
system.
Ecological assessment work by Tropical Sio-Industries for permitting of the north-west fill area,
notes a small area of stressed and dead mangroves close to Upper Clam Say.
1979
Environmental Assessment of the northwest fill area is distributed.
Tropical Sio-Industries produce biological reports:
· A comparative study of the water and carbon flows of Upper Clam Say
· Invertebrate Population Studies in the vicinity of Upper Clam Say
1981
Clam Pass closed in was re-opened by drag line.
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1982
Clam Pass preserve is dedicated to Collier County.
1983
Tropical Bio-lndustries produce biological reports:
· Fish populations of tidal ponds west of Upper Clam Bay
1986
Collier County constructs a 2,900' boardwalk to provide access across Outer Clam Bay to the
county park, south of Clam Pass.
1988
Clam Pass closes twice, first in the spring and again in the late fall after Tropical Storm Keith
(November 23, (988).
1989
Small areas of stressed and dying mangroves are noted by residents in the basin west of Upper
Clam Bay and east of The Strand in Bay Colony. A DNR interdepartmental memo highlights
cause of the stress as "the lack of adequate water circulation resulting from the closure of Clam
Pass".
First emergency dredging permit received from DNR to re-open clogged Clam Pass, following
memo by David Crewz to the DNR highlighting problems and danger if the pass was not re-
opened.
1990
Pelican Bay Improvement District comes under Collier County as the Pelican Bay Services
Division.
1992
The area of dead mangroves is reported at 7 acres.
1994
20 acres of mangroves are reported dead.
1994
Clam Bay is approved by the Board of County Commissioners as Collier County's first Natural
Resource Protection Area (NRPA).
1995
Emergency dredging permit issued allowing opening of the pass, but no work farther back than
600 feet.
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1996
Permits to open Clam Pass received from DEP and USACE and work completed in April. In
summer and fall blasting and hand excavation was permitted and completed in 1997.
1996
Mangrove die-off area estimated at 50 acres.
1997
Clam Pass dredged again under modification to 1996 Permits.
1998
Ten year permits received from DEP and USACE for dredging Clam Pass and the interior
channels and Seagate culverts with associated monitoring work and storm and freshwater
studies.
1999
Dredging work associated with the CBRMP is completed in the spring by Ludlum Construction
Company.
.
...#
~.
.,
1999
Staff at The Conservancy of Southwest Florida commences a 3-5 year study of mangroves,
surface water level and elevation within the mangrove die-off area.
2002
Maintenance dredging of Clam Pass flood shoals completed to improve tidal circulation.
2004
Hurricane Charley comes ashore about 50 miles north of Clam Pass. A lot of sand was
redistributed but the pass did not close. Extensive limb and leaf loss was documented within the
mangrove forest.
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2005
Hurricane Wilma comes ashore about 30 miles south of Clam Pass. More limb and leaf loss is
noted. Pass does not close.
Hurricane damaged mangroves along bay 2005
Same mangroves along bay 2007
2007
Maintenance dredging of Pass and entrance channel completed to 1999 specifications.
1995 Die-off and Related Causes
The majority of the original die-off occurred within the northernmost black mangrove areas of
the system. Three defined processes of the black mangrove forest are applicable to the Clam
Bay ecosystem. These three processes are briefly reviewed here are:
Salt balance: Salt is available to the black mangrove forest from a variety of sources, but
normal tidal exchange is the most important. Black mangroves can tolerate slightly higher
sediment salinity than the other two mangrove species but can be affected adversely by an excess
accumulation of salt. In a natural setting, toxic accumulation of salt is usually prevented by
dilution and leaching due to rainfall and washout on outgoing tides. Accordingly, the transport
of dissolved and diluted salt back to the Gulf is critical to the health of the black mangrove.
Organic matter budget: Like the salt balance, the organic matter budget is intimately related to
the flushing component of the tidal cycle. It is generally recognized that even in the best of
circumstances only 60-86% of the decomposing matter generated by a mangrove forest is
consumed on site. The balance has to be exported. This export is in the form of highly
fragmented or dissolved organic matter fraclions and as such is also dependent upon tidal
flushing.
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Water budget: Water enters the Clam Bay system through rainfall, freshwater run-off and
through the influx of seawater. It leaves via evaporation from water surfaces, transpiration from
leaves and tidal out-flow to the Gulf. Since evapotranspiration rates within mangrove forests are
relatively low it follows that the forest must freely drain or else water logging occurs that quickly
leads to stress and mortality.
Rainfall in South Florida contributes about 53 plus inches of water per year and most of that
occurs in the wet season. Additional freshwater inputs to this system occur from groundwater
flow and from irrigation in the developed portions of Pelican Bay. The irrigation amounts to
about 26 to 28 inches (on average) of rainfall every year but can vary widely due to weather
conditions. In a perfect world this irrigation component would be entirely taken up by the soil
and plants but in these non-perfect conditions, it is expected that some run-off is also generated
due to the irrigation. When this amount is added to normal rainfall, the export capacity of the
system to the Gulf becomes critical, especially when considered in the context of the need to
transport the organic matter and salt described above.
The combination of these mangrove species and other intertidal vegetation makes mangrove
forests extremely productive natural resources, but their productivity depends on the right
combination of tidal "flushing" (movement of water and suspended material in and out of the
estuarine wetland) and freshwater run-off to maintain their ability to function. The freshwater
input dilutes the high salinity of marine waters, thereby reducing the effort needed by the
mangrove to exclude or excrete salt. This allows more of the trees' energy to be directed to
normal growth and maintenance.
Tidal flushing also allows nutrients to be distributed within the forest and provides for the
transportation of dead leaves, twigs, etc. As these materials decay, they become food for marine
life. It is this mangrove detritus which is consumed by the many organisms at the base of the
food chain and which in turn create the next level of the food chain necessary to support the fish
populations that characterize the mangrove community. It is the combined interaction of fresh
and salt water through tidal flushing that is critical to the ability of the mangrove forest to sustain
itself. It follows therefore, that anything that materially disrupts the maintenance of the flushing
component threatens the long term viability of the mangrove forest itself.
According to detailed field surveys performed in the early 1970's (Tropical BioIndustries
Company and Gee and Jenson 1978) tree densities ranged from 726 to 7,580 per acre and
maximum canopy height was 39 feet. Within the black mangrove dominated basin forests,
16% of the trees or 8.8 acres of dead black mangroves were reported in the 1978 document.
Dead and stressed mangroves were again reported for Clam Bay in 1989 when David W.
Crewz, a biologist with the Florida Marine Research Institute, was asked to inspect Clam
Pass Park by Mary Ellen Hawkins, then a Collier County representative to the legislature
(letter to Don Duden dated April 3, 1989). Mr. Crewz concluded that the "dead and stressed
mangroves were caused by lack of adequate water circulation resulting from the closure of
Clam Pass.... allowing toxin and salt buildup."
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Westinghouse Consultants, Inc., employees in February 1992 noted additional mangrove
die-offs, north of Clam Pass Park on the west side of Upper Clam Bay. This area was
inspected by Dr. Eric Heald, a consultant to WCI, and reported to WCI in April 1992, as
probably due to hypersalinity, although 1991 was an above average rainfall year. The same
conclusion was reached by Robin Lewis of Lewis Environmental Services, Inc., after an
inspection in May 1994. At this time the die-off area was approximately 6 acres. A
widespread mortality of mangroves in Florida Bay was also reported in the summer of 1991
(Yarbro et aL 1994) and it was attributed, in part, to natural drought conditions and unusual
tidal inundation patterns.
After above average rainfall in the summer of 1995, The Conservancy, lnc.'s staff and
residents in Pelican Bay reported additional mangrove deaths which continued through 1995
and 1996. The total area of the die-off through July 1999 was around 50 acres.
The death of trees occurred around hyper saline ponds and is consistent with conditions caused
by periods of excessive inundation of freshwater followed by periods of continuous dry down,
particularly where the mechanism for flushing is impaired. (Lugo 1976). During the period
immediately preceding the observed die off, and during the periods following, Clam Bay
received record amounts of rainfalL This rainfall, when coupled with an admittedly impaired
circulation system and intermittent pass closure, resulted in water levels that were high enough
for a long enough period of time to adversely impact the mangroves.
It should be noted, however, that the death of trees around hyper saline ponds is a process that is
now occurring for a variety of reasons elsewhere in Florida and the Caribbean and is not
necessarily evidence that the forest is in a state of irretrievable decline. The presence of new
seedlings confirms that these conditions may well be able to return. (Lugo 1976;). Presently the
die-off areas appear to be recovering as a result of the restoration work done to date.
The remedial efforts described later in this Plan, in particular the dredging of Clam Pass and the
opening of several of the impacted tidal creeks, have had the desired effect of improving the
circulation of tidal waters within the system. (Humiston, pers. comm. 2007).
Hydrology
The most critical factor for mangrove maintenance is the hydrological regime, sometimes
referred to as the surface water or surficial hydrology. This is because the surficial hydrology
has both horizontal and vertical components and provides key ecological functions to the
mangrove forest.
With respect to the horizontal component, incoming water (both tidal and surface water run-off)
into a mangrove wetland brings with it nutrients, dissolved oxygen, and marginally lower salt
concentrations. Conversely, the outgoing water leaving a mangrove wetland (through tidal
exchange) removes metabolic waste products (e.g., carbon dioxide and toxic sulfides) and excess
salt. The vertical component refers to incoming water that percolates down into the sediment
and root zone, and the sediment drainage, on a falling tide, which removes metabolic wastes and
excess salt.
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It is the inflow and outflow of sea water that is critical to the ability of the mangrove forest to
manage these two ecological functions and as such dissipate salts, organic matter and freshwater.
It follows that anything that affects the system and alters the ability of the system to perform
these functions, will, in most instances, cause stress to the system and, at some point in time,
result in the death of the system, or portions of it.
The Clam Bay system was originally part of a larger tidal system connected to the Gulf of
Mexico by three tidal inlets; Wiggins Pass, Clam Pass and Doctors Pass. (Turrell 1996). During
the early 1950's this system was isolated form adjacent bays by the construction of Sea gate
Drive to the south and the construction of Vanderbilt Beach Road to the north. The practical
effect was to leave Clam Pass as Clam Bay's only connection to the Gulf
In 1976 culverts were placed under Seagate Drive to provide some exchange from Venetian Bay
(a residential sea wall bay system) and improve water quality in the Doctors Pass area. One-way
valves were placed on the pipes in 1999 but there was not enough head differential to operate the
valves and they ended up acting as plugs instead. In October, 2002 these valves were removed
to promote more flushing and water exchange in this southern portion of the system.
Hydrologic studies indicate that the tidal flushing capacity of Clam Bay prior to the restoration
dredging was limited and almost insignificant in Upper Clam Bay. The preliminary
hydrographic assessment of the Clam Bay system prepared by Tackney & Associates, Inc.
(August 1996) demonstrated rather dramatically that there was a significant reduction in tidal
range between the middle boardwalk and Inner Clam Bay. Tackney described the flow in that
area as "measurably reduced" and "very inefficient". This connecting tidal creek is the key
conduit for tidal input and outflow to the northern reaches of the Clam Bay system. And its
constriction and the ancillary constriction of tributaries connection to it, impact the quantity and
quality of the flushing that can occur in Inner and Upper Clam Bay.
As noted earlier, it is the daily rise and fall of the tide and the exchange of seawater between
Clam Bay and the Gulf that are critical to the ability of the mangrove forest to export both
organic matter, and excess salt and freshwater as well as receive oxygen rich water and nutrients.
The greater the tidal amplitude (or tidal prism) the greater the benefit to the mangroves _ more
needed resources are delivered and more wastes are removed. Conversely, in the absence of
surface water circulation or tidal activity, mangroves can become stressed and, in certain
instances, rapidly die due to deleterious changes in the sediment or water levels. The
consequence is that the root systems wither and eventually the whole tree dies. Note that the
tidal exchange mechanism that is critical to the health of the mangrove forest was, within this
ecosystem, seriously constrained. (Turrell 1995). Another key aspect of the surficial hydrology
is the vertical location of the water level elevation relative to the mangrove sediment elevation.
Specifically, the mean low water (tide) elevation has to be sufficiently lower than the mangrove
sediment elevation in order for mangrove sediments to drain during low tide. A persistent high
surface water elevation stops sediment drainage and results in anoxic sediment and the
accumulation of toxic waste products.
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It should be observed that the black mangrove forest does not require the kind of intense flushing
that is more typical of the red mangrove systems in order to maximize its productivity.
However, the total absence of meaningful exchange was certainly a contributor to the significant
degradation of the mangrove system within Clam Bay. (Tackney 1996; Lewis pers. comm.
2008).
In this context Tackney observed that even in the absence of rainfall, the average water surface
elevations for the inner and upper bays were higher than the average surface elevation for the
Gulf. Analysis of the tidal data indicated that average water surface elevations in the Inner and
Upper Clam Bays were both elevated above the average Gulfwater surface elevation by
approximately 0.2 feet. This indicated that the tidal range in Inner and Upper Clam Bays was
muted and that the system was receiving significant additional water through runoff and
restricted capacity to drain additional inflow. In fact, during portions of the Tackney study no
tidal fluctuation was noted in the Upper Clam Bay and only marginal tidal effects were observed
in Inner Clam Bay.
The reduced tidal ranges were also accompanied by relatively large phase lags. The phase lag is
the average time delay measured in hours and minutes between the occurrence of slack (high or
low) water in the Gulf of Mexico and the measurement stations. It is affected by both the
distance between measurement stations and the amount and quality of hydraulic resistance of the
connecting channel. The longer the distance and the higher the resistance, the more pronounced
one would expect the phase lag to be. In the upper bays, high and low waters generally occurred
over three hours later than the Gulf tides.
These conditions indicate that the tidal creeks connecting the interior bays are hydraulically very
inefficient. As a result, the upper bays are prone towards extended periods of flooding as a result
of freshwater runoff and the inability of the system to drain efficiently. During Tackney's field
studies of May 1996, rainfall of approximately 4 inches in three days was adequate to flood the
Upper Clam Bay above high tide levels and sustain this flooded condition for over two days.
Accordingly, he concluded that the creeks and bays that serve to connect the Inner and Upper
Bays were significantly less efficient in the ebb tide stage than they were in the flood stage.
Studies undertaken by both Lewis Environmental Services, Inc. and Turrell & Associates, Inc.
would support this conclusion. (Turrell 1995).
Finally, an additional attribute of the system that is directly related to tidal prism and the quantity
of inflow and outflow is the question of inlet stability. Inlet stability refers to a tidal inlet's
capacity to adequately scour out deposited sediments and prevent inlet closure. For a given wave
environment, inlet stability is governed primarily by the volume of water (tidal prism) carried by
the inlet. To remain stable, an inlet must have the characteristic that a temporary constriction in
cross sectional area produces an increase in current velocities adequate to scour out the
constriction. To function without mechanical intervention, the system must generate sufficient
volume off water on the ebb tide to scour out the inlet naturally, otherwise the inlet will, over
time, continue to close. This is particularly true during periods of high wave activity and low
tidal ranges. (Turrell 1995; Tackney 1996). The five closures of Clam Pass that have occurred
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in the past twenty-five years indicate that stability of Clam Pass is marginaL (Turrell 1995;
Tackney 1996).
Freshwater Component
Under predevelopment conditions, much of the area's rainfall was held on the surface of the land
in sloughs and other low areas. This water would either slowly filter through the soil to recharge
the shallow aquifer or move through the mangrove community to the bay. Less than ten inches
of the approximately 53 inch average rainfall is estimated to have been lost from the uplands east
of Clam Bay as surface runoff. The storage capabilities of the land thus moderated surface
flows, preventing extremely high flow rates during the rainy season and serving to maintain
surface flow and groundwater flow during the dry season. (FDER 1981).
In 1977 the Pelican Bay Planned Unit Development was established by Westinghouse
Communities, Inc. The development contains a mixture of residential, retail, commercial and
recreational facilities and lies east of Clam Bay. As a condition of development, Clam Bay, the
area that lies west of the Pelican Bay and consists of approximately 530 acres of mixed
mangrove forest and wetlands was designated as the Pelican Bay Conservation Area. As such, it
was designated for conservation but with limited recreational access. This area was eventually
given to Collier County and is currently classified as a Natural Resource Protection Area
(NRP A).
The development of Pelican Bay had limited fill impact to the Clam Bay system, but it did
modify the pattern of freshwater entering the Clam Bay system. (Wilson, Miller et.aL 1996).
The stormwater management system as designed, permitted and implemented at Pelican Bay
employs a series of detention ponds, swales and culverts to regulate the discharge of run-off into
Clam Bay. Discharge occurs almost continuously along the eastern perimeter of the
conservation area. Run-off from the northern end of Pelican Bay is collected and discharged into
Upper Clam Bay. Irrigation water for 27 holes of golf and landscaping in Pelican Bay is
approximately 3.0 MGD which approximates 26 inches per year of additional rainfall
equivalent, (Wilson, Miller et.aL, 1996). When added to the average rainfall for South Florida of
approximately 53 inches per year, the local area has an effective rainfall of approximately 80
inches plus annually. This is significant, particularly when viewed in the context of predictable
storm events that have the potential for altering the amount of average rainfall entering the Clam
Bay system.
The "Pelican Bay Water Management System - Stormwater Detention Volume and Water
Budget Analysis" (Wilson, Miller, Barton & Peek, Inc. April, 1996) describes the water
management system as being divided into six watersheds or drainage systems. Rainfall,
including irrigation, reaches the ground and either seeps into the ground or runs off to a
stormwater detention area within each system. The stormwater detention plan for Pelican Bay
has a standard, permitted design capacity to hold the first inch of stormwater during a 25-year
storm event. The stormwater is detained for flood protection and water quality treatment.
Stormwater discharge is controlled by a series of weirs designed such that the post-development
stormwater run-off rate does not exceed pre-development rates. Stated differently, the system is
designed to discharge stormwater in the development portion of Pelican Bay in the same manner
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that it discharged stormwater prior to development. The stormwater discharge exits the weir
system for a final release into Clam Bay.
Stormwater runoff from an additional 130 acres of watersheds, outside of Pelican Bay,
contributes an additional and significant volume of discharge to Clam Bay. This water
represents 7.9% of the total stormwater discharge to Clam Bay.
As the area of Pelican Bay to the east has undergone development, it has increased the
impervious surface area, with a concomitant increase in surface runoff, which is eventually
discharged to Clam Bay. The daily irrigation water volume enhances the saturation of the
uplands which reduces their ability to accommodate rainfall volume, thus effectively increasing
surface and groundwater discharge. Groundwater discharge can be commonly observed
throughout-the eastern side of Clam Bay and is discernable as a very slight sheet flow. Where
this water encounters a discharge system, even one that is not operating at peek efficiency, such
as Outer Clam Bay, excess water is effectively removed from the system. However, in the
northern section, sheet flow was not efficiently removed due to lack of flow through the forest.
Thus, it accumulated, increasing soil saturation and raising the mean water table elevation, and
apparently overwhelming the black mangrove's anaerobic soiVgas exchange mechanisms.
Mangroves in these areas became stressed and died.
Restored Characteristics of Clam Bay
In assessing a variety of altematives to the restoration of Clam Bay, the original need was nol so
much to restore the system to a mangrove forest (although that remained the primary goal) as it
was to stabilize and restore the system as a thriving natural resource. It was recognized that with
changes to naturally induced flushing rates and hydrological regimes the mangroves would likely
adjust by altering zonation patterns, species compositions, rates of growth and mortality, etc.
(CBRMP 1998).
Clam Pass
The single most important thing that has been done to restore the health of the Clam Bay system
is to improve the total tidal flushing capacity of the system. (Humiston & Moore 2003; Lewis
2007; Turrell 2007). As has been discussed earlier, the tides in the upper reaches of Clam Bay
were weak and variable. Runoff from rainfall further reduced the interior tidal range and during
Tackney's field study, total rainfall of approximately 4 inches in three days was sufficient to
flood Upper Clam Bay to such an extent that tidal fluctuation was completely eliminated.
During Hurricane Charlie, storm surge and rainfall far exceeded this 4 inch level and yet Upper
Clam Bay was experiencing tidal fluctuations the following day. The restoration efforts of
dredging the pass, dredging the interior channels, and construction of the network of flushing
cuts throughout the original die-off area proved very effective in maintaining the tidal exchange
and drainage capability of the system.
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In Outer Clam Bay, where the channel leading to Clam Pass is relatively short, the tidal range
was only 50% of its potential value. This diminished exchange capacity was a direct result of the
constricted nature of the inlet and its adjacent interior channels.
During flood tides, sand is carried into the pass by tidal currents and settles out of the water
column where the current drops below the magnitude necessary to maintain the sediment in
suspension. At Clam Pass this has resulted in the gradual accumulation of sediment in the
channels interior to the inlet. This sedimentation process reduces the hydraulic efficiency of the
channels and results in diminished tidal ranges for the interior bays.
In 1998, when the restoration activities commenced, the channels immediately interior to the
pass were so constricted that even when the pass was excavated, the interior tides remained
muted. Efforts to maintain the pass in an open condition were dramatically improved by
enlarging the dredge area to include not only Clam Pass, but also the critical areas of the adjacent
interior channels. This action not only augmented the volume of tidal flow through Clam Pass,
but also reduced the likelihood of inlet closure during adverse weather conditions. Currently,
Outer Clam Bay's tidal range has been improved by 4 to 6 inches as a result of the dredging
activities and the increased self-maintenance capability of the inlet.
The single most critical causative factor of the Upper Clam Bay mangrove die off and lack of
natural regeneration of mangroves was the relative absence of adequate tidal flushing, or tidal
pumping, typically measured in terms of tidal amplitude and its frequency of occurrence
(CBRMP 1998, Roessler pers. comm. 2004). Tidal pumping refers to the hydraulic change in
water pressure in mangrove sediment that is controlled largely by tidal activity. When rising
tides force a rise in the water table in the sediment beneath mangroves, gasses (e.g., carbon
dioxide, hydrogen sulfide, methane, ammonia) and various fluid wastes (including refractory and
labile dissolved organic matter) are expelled from the sediment. Since some of these compounds
are toxic, particularly hydrogen sulfide, their frequent (daily to twice daily) removal is critical to
the health of the mangroves. Conversely, on falling ties and a drop in the sediment water table,
gases (e.g., oxygen) and nutrients present in the over-lying water are drawn into sediment. The
frequent renewal of sediment oxygen is particularly important because it is required in normal
root respiration which, if stopped, causes mortality. Thus in the absence of tidal pumping,
metabolic wastes accumulate in the sediment and it eventually turns toxic and anoxic, meaning
no oxygen. It is important to note that this critical process has nothing to do with the salinity, or
absence thereof, or with the presence of absence of surface and subsurface water.
Because the tidal amplitude was wholly inadequate mainly due to the restricted tidal circulation
and tidal pumping within the Clam Bay system, and between the Clam Bay system and the Gulf
of Mexico, the correction provide by the restoration activities has been critical to the creation and
management of conditions required to foster mangrove growth in addition to improving and
maintaining water quality within Clam Bay.
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Interior Tidal Creeks
It is also important to recognize the interrelationship between the maintenance of Clam Pass and
the maintenance of the interior connecting tidal creeks. The tides in the upper reaches of Clam
Bay were weak and variable. In the absence of rainfall, the tidal ranges of the Upper and Inner
Clam Bay's were on the order of 15% to 19% of the Gulf tidal range. Run-off from rainfall
quickly flooded the upper bays and further reduced the interior tidal range. The reduced tidal
range in the interior bays were due to the restrictive condition of the interior connecting tidal
creeks. (Tackney 1996; CBRMP 1998). These restrictions not only super-elevated the average
water surface elevation within the bays but also retarded drainage. The problem was exacerbated
by the addition of pulsed water from the stormwater management system, which by design stores
water in its detention/retention areas and then allows it to discharge into the bays. The
constricted condition of the interior tidal creeks coupled with the additional water being
continuously discharged into the bay elevated the water surface elevation in the upper bays and
contributed to extending the periods of flooding beyond tolerance levels that mangroves can
accommodate, particularly the black mangrove. (Turrell 1995; Tackney 1996; Lewis 2007).
The second restorative action of the plan required that three sections of interior tidal creek be
dredged open and in some cases enlarged in order to augment the transfer of water. Removing
the constrictions present in these waterways allowed the increased inflow of water as well as
enhancing the outflow of water. These adjustments enh,mced the flood tide ingress and allowed
for increased volume to exit on the ebb tide. The results of this work showed an almost doubling
of the tidal amplitude in the upper reaches of the system. While the amplitude is still far below
the levels seen in the Gulf, it is still much improved from the pre-restoration levels.
Interior Flushing Channels
The third restorative action of the original plan was the creation of a network of flushing cuts
within the mangrove forest and die-off areas. These cuts were dug by hand throughout the
system the purpose of which was to connect depressional zones and areas subject to ponding to
the main waterways of the system. This allowed for tidal water to flow into and out of the forest
areas much easier and further enhanced the tidal exchange that could occur.
Biological monitoring work over the past ten years has conclusively shown that the improved
drainage which has been achieved through excavation of these small flushing cuts within the
forest basin has greatly alleviated ponding and contributed to the observed improvements in the
Clam Bay mangrove community.
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4.0 Authorized Construction Activities
List of permits for work undertaken to date and relevant legal framework
Collier County processed a permit to dredge limited areas of Clam Pass to facilitate the
movement of tidal water in and out of Clam Bay. The FDEP permit for this activity was issued
on March 28, 1996 with the companion USACOE permit being issued on April 2, 1996. The
FDEP permit was modified on April 10, 1996 with the authorized work being undertaken and
completed on April 17th, 1996. The practical effect of implementing this Permit was to reopen
the Pass, but it was clear that without a more comprehensive strategy, this effort, standing alone,
would not revitalize the Clam Bay ecosystem.
A permit to improve the channel flow within defined areas of the Clam Bay system by a
combination of blasting and hand excavation was issued on June 26, 1996. The work was
undertaken and completed in two segments. The first channels were opened in August 1996 and
the second channels were opened in November 1996. The results of these two initiatives were
positive in that measurable improvements in tidal flow were discernible and with that have come
improved conditions for natural revegetation.
A permit was issued on January 5, 1997 to construct a portable pump and pipe system as an
interim measure to divert freshwater within the Clam Bay system to the Gulf while a more
permanent solution contemplated by the construction of an outfall structure was reviewed.
Although this plan was never implemented and is no longer considered, it envisioned two pumps
that would be operational when the water surface elevation within Clam Bay exceeded a
specified threshold. The plan anticipated the direct discharge of excess water into the Gulf with
the expectation that this system would augment the natural discharge through the tidal
mechanism after severe storm events.
Lastly, Collier County authorized the pursuit of a ten-year permit to allow the County, or its
designee (which in this case was the Pelican Bay Services Division), to maintain Clam Pass in an
open condition. The application, as filed, did not address any other issues affecting the
operational characteristics of Clam Bay and essentially mirrored the 1996 Permit described in the
first paragraph above. This permit was issued in 1998 and has been the guiding document for the
maintenance activities undertaken in the Clam Pass system since then.
It is anticipated that an updated version of the 1998 permit will be issued and implemented in
conjunction with this revised Management Plan. The permit duration will be coordinated with
both DEP and the Corps of Engineers but is anticipated to be for a minimum period of five (5)
years. This permit will allow ongoing maintenance and enhancement activities to continue along
with occasional, modest removal of material by dredging within a discreet area of Clam Pass in
order to maintain the existing tidal regime within the system. Any expansion of dredging or
other new management initiatives will be reviewed and permitted (as necessary) under separate
applications. Ongoing investigations being undertaken by the Collier County Coastal Zone
Management office are being developed to look at, among other things, more in-depth water
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quality issues associated with waters to the north and south of the system, navigation concerns,
expanded dredging outside of the previously approved footprint, and other issues that may arise
as a result of stakeholder discussions. This Management Plan is specifically designed to
maintain the work and activities already undertaken and to insure that the restoration success
observed to date is continued.
The following list contains more details related to existing and historical permits issued for the
Clam Pass system.
Permit Details
Department of Environmental Regulation Construction Permit/Certification No.: 11-50-3769
Date of Issue: May 23, 1979
Expiration Date: May 15, 1984
Project Description: To provide construction sites for residential development in a planned
community by: placing approximately 700,000 cy of clean upland fill material onto
approximately 94 plus acres of submerged lands of waters of the state landward of the line of
mean high water.
Department of the Army Corps of Engineers Permit No.:. 00754929
Date ofIssue: November 18, 1981
Expiration Date: November 18, 1984
Project Description: This permitted the filling of? 5'= acres of mangrove wetlands north, east and
west of Upper Clam Bay and south of Vanderbilt Beach Road.
Department of Environmental Regulation Modification Permit No.: 11-50-3769
Date of Issue: December 23, 198 I
Expiration Date: November 18, 1986
Project Description: This modification extended the expiration date of the permit to November
18,1986.
Department of the Anny Corps of Engineers Permit No.: 79K-0282
Date of Issue: August 2, 1983
Expiration Date: November 18, 1986
Project Description: This was an extension of the permit authorizing the filling of 75'= acres of
mangrove wetlands north, east and west of Upper Clam Bay and south of Vanderbilt Beach
Road, plus approximately 2 acres of mangroves at the existing Collier County beach access at
Vanderbilt Beach Road. The request was reviewed and no objections were raised to the
proposed work schedule; therefore, the completion date of the permit was extended for 2 years
until November 18, 1986.
Department of Environmental Regulation Modification of Surface Water Management Permit
No.: 11-00065-5
Date of Issue: December 15, 1983
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Date of Expiration:
Project Description: Approved modifications to I) Revise system V, drainage area 3. 2)
Construction and operation of water management system number VI.
Department of Environmental Regulation Permit No.: 86IPT-20328
Date of Issue: December 18, 1986
Expiration Date: December 18,1991
Project Description: Discharge ,,2.3 acres of clean fiU to construct an access road.
Department of Environmental Regulation Modification Permit No.: 11-50-3769
Date ofIssue: January 7, 1987
Expiration Date: December 18, 1991
Project Description: This permit modification extended the expiration date and reduced the
amount of fiU in the area extending south along the coastal edge from approximately 13 acres, as
permitted, to 2.43 acres in order to construct a linear access road (for The Strand in Bay Colony).
Department of Environmental Protection Permit! Authorization No.:0128463-00 I-JC
Date ofIssue: July 06, 1998
Expiration Date: July 06, 2008
Project Description: This application requested a variance from a permit condition which
required that a dredge and fiU mixing zone be no more than ISO meters in radius from the point
. of discharge or source of poUution. The applicant requested a mixing zone of up to 1,000 meters
for the nearshore disposal of the beach quality material. The project activities are to be
conducted to improve the hydrodynamics of, and thus restore and manage, the Clam Bay
ecosystem.
Department of the Army Corps of Engineers Permit No.: 199602789 (IP-CC)
Date ofIssue: April I, 1998
Expiration Date: July 08, 2008
Project Description: This Permit authorized the following works: I) Replacement of Seagate
Drive Culverts (pages 44 - 49 of the CBRMP). 2) Clam Pass main channel dredging for Cuts I,
2, 3 and 4 (pages 49 - 65 of the CBRMP). 3) Excavation and maintenance of Interior Tidal
Creeks (pages 65 - 71 of the CBRMP).
Department of Environmental Protection Permit Modification DEP Permit No.:0128463-001-JC
Date ofIssue: December IS, 1998
Expiration Date: July 06, 2008
Project Description: This permit modification authorized: I) an alternative to upland spoil
disposal area for Cut # I; 2) an increase in the width of the channel Cut #4 through Clam Pass;
and 3) alternative pipeline corridors between the dredge cuts and the disposal areas.
Department of the Army Corps of Engineers Modification # I for Permit No.: 199602789 (IP-CC)
Date ofIssue: February 26, 1999
Expiration Date: July 08, 2008
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Project Description: This application requested a modification to: I) discharge the dredge
material from Cut # I to new disposal area identified as an upland parking area; 2) increase the
width of channel Cut #4; 3) remove native vegetation and excavate a portion of upland Disposal
Site #2; 4) remove native vegetation and excavate a portion of upland Disposal Site #3. Issues I
& 2 were found to be insignificant and the permit was modified. The requests regarding issues 3
& 4 were not approved at this time.
Department of the Army Corps of Engineers Modification #2 for Permit No.: 199602789 (IP-CC)
Date of Issue: March 08, 1999
Expiration Date: July 08, 2008
Project Description: This application requested a modification to: I) discharge the dredge
material from Cut # I to new disposal area identified as an upland parking area; 2) increase the
width of channel Cut #4; 3) remove native vegetation and excavate a portion of upland Disposal
Site #2; 4) remove native vegetation and excavate a portion of upland Disposal Site #3. The
proposed modification to widen channel Cut #4 is to be done without any additional seagrass
impacts. Based on the review and coordination with FWS, the permit was modified in
accordance with these requests.
Department of the Army Corps of Engineers Modification #3 for Permit No.: 199602789 (IP-CC)
Date ofIssue: May 05, 2000
Expiration Date: July 08, 2008
Project Description: This application requested modifications to the monitoring and reporting
schedule referenced on page 93 (Biological Monitoring) of DA Permit (CBRMP). The request
was to submit annual reports instead of semi-annual reports. The permit was modified as
requested.
Department of the Army Corps of Engineers Permit No.: 199602789 (IP-CC) Extension
Date ofIssue: May 8, 2008
Expiration Date: July 08, 2009
Project Description: This Permit authorized the extension of the expiration date for a period of
one year.
Department of Environmental Protection Permit!Extension No.:O 128463-00 I-JC
Date of Issue: May, 2008
Expiration Date: July 06, 2009
Project Description: This modification authorized changes to Special Condition #5 dealing with
changes to the informational signage required in the System and extended the expiration date for
a period of one year.
31
1 0 F ;f
CLAM SA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
5.0 Monitoring Overview 1999-2007
Restoration activities permitted by state and federal agency permits required a suite of
monitoring activities to assess effects of the work efforts. TurreU, HaU & Associates, Inc. has
carried out biological monitoring of mangroves and benthic habitats throughout the system while
Lewis Environmental have focused monitoring efforts on mangroves within the die-off area
itself. Humiston and Moore Engineers performed bathymetric assessments of the restored tidal
channels and modeled the system in an effort to help analyze future work efforts. Monitoring
reports were prepared and submitted according to permit requirements. This section provides a
brief re-cap of the work to date to assess both the success of the restoration dredging and
consider focus of future monitoring efforts. The foUowing table lists reports by year, consultant
and name.
Year Date Report Name and Number
Turrell, Hall & Associates, Lewis Environmental Humiston & Moore
Inc. Services, Inc. Engineers, Inc.
N/A Spring 1997 Baseline and Time Zero, # I,
pre and post flushing
channel construction in the
die off area
FaU 1997 First Annual, #2, one year
post flushing channel
construction .
1998 Second Annual, #3, two
years post flushing channel
construction
I Spring 1999 Time Zero, pre-dredging,
#1
Summer 1999 Baseline, post dredging, #2 Results of Monitoring
Improvements to Tidal
Flow, Un-numbered.
2 FaU 2000 First Annual, I year post Third Annual, #4, post Bathymetric Report # I
dredge, #3 additional channel
construction in 1999 and
2000
3 FaU 2001 Second Annual, 2 years Fourth Annual, #5, post
post-dredge #4 additional channel
construction in 200 I
4 FaU 2002 Third Annual, 3 years post- Fifth Annual, #6, one year Bathymetric Report # 3 (9)
dredge #5 post 200 I construction
Summer 2003 Clam Bay Hydrodynamic
Modeling and Analysis
32
lOF It
5 Fa1\ 2003 Fourth Annual, 4 years Sixth Annual, #7, two years Bathymetric Report # 4
post-dredge #6 post 200 I construction (10)
6 Fa1\ 2004 Fifth Annual,S years post- Seventh Annual, #8, three Bathymetric Report # 5
dredge #7 years post 200 I
construction
7 Fa1\ 2005 Sixth Annual, 6 years post- Eighth Annual, #9, four Bathymetric Report # 6
dredge #8 years post 200 I
construction
8 Fa1\ 2006 Seventh Annual, 7 years Ninth Annual, #10, five Bathymetric Report # 7
post-dredge #9 years post 200 I
construction
Summer 2007 2007 Clam Pass
Maintenance Dredging
Post-Construction
Summary
9 Fa1\ 2007 Eighth Annual, 8years Tenth Annual, #11, six Bathymetric Report # 8
post-dredge # 10 years post 200 I
construction
CLAM SA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May IS, 2008
Monitoring required by the DEP permit included:
· Turbidity monitoring during dredging work.
· Bathymetric survey prior to and fo1\owing excavation and, subsequently, on each occasion
maintenance dredging is carried out. Also fo1\owing excavation of the interior channels.
· Monthly hydrographic (tidal) data co1\ection from at least three (3) sites.
· Quarterly water quality analyses from at least six (6) sites.
· Biological monitoring to include annual aerial photography, survey of mangrove and seagrass
communities through fixed plots and transects.
The USACE permit required submittal of semi-annual reports to summarize work completed and
planned for the preceding and subsequent six months (respectively) and including monitoring
activities. This requirement was later modified to coincide with the submittal of the annual reports per
the DEP permit.
As shown by the table above, this permit requirement has been satisfactorily fulfilled for nine of the
ten years, with reports for 2008 forthcoming at the end of the year.
Presented in this chapter is a brief annual summary of monitoring results from 1999 to date. The
importance of regular, repeatable, surveys of ecosystem health is a crucial part of management efforts.
Only by accessing some of the more remote portions of the 570-acre system can early signs of stress
and degradation be caught.
33
lOF !14
CLAM SA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
Monitoring Plot Locations
34
lOF f
CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
Conclusions and Discussions: Y ear-by- Year
!2.22
A total estimate of 42.67 acres dead or stressed mangroves was provided by Turrell, Ha1\ &
Associates, Inc. consisting of the main basin area adjacent to The Strand and several, smaller, discrete
areas possibly attributed to lightning strikes or where slight depressional areas a1\ow ponding and
salinity/oxygen stress. Seagrass acreage is estimated at 5.13 acres, restricted to Outer Clam Bay and
the channel leading to Clam Pass. Little change was noted later in the summer at the time-zero survey
although most mangrove plots showed significant standing water which could be a function of the
dredging work as well as tides and rains around the survey time. Seagrass density was reduced
following dredging work.
The main die-off area (NW Clam Bay, adjacent to The Strand) 1999
35
IOF .1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
1!!Ql!
A full year after the dredging work, no dramatic changes were apparent, some mangrove plots had
declined; others appeared in slightly better health. Seedling recruitment was good throughout. Heavy
rains in late 1999 were thought to have contributed to a dieback in groundcover noted by Lewis
Environmental Services. No new mangrove die-offs or expansion of stressed areas were noted
although the reduction in seagrass density apparent at the time-zero survey continued. Work planned
for 200 I included the experimental Riley encasement method for mangrove propagules.
36
lor ~
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
~
Mapping of the die-off area was repeated and estimated to have increased in size, spreading to the
north, to encompass just under 50 acres. Additionally a few new stressed areas were identified through
aerial photographs. Individual plots showed some additional tree losses but consistent seedling
recruitment. Channel construction in the main die-off area and close to Plot 7 is thought to have
contributed to the recovery process underway, illustrated by extensive Batis and dramatic seedling
recruitment. Continued decline in seagrass coverage was reported.
The observations generated sufficient concern amongst project managers in 200 I that a suggestion for
additional drainage channel construction in the die off area was made.
Main die-off area 200 I
37
lOF1
CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
2002
Additional flushing channels were constructed in the die-off area during late 200 I and results from the
2002 surveys show that these efforts were successful with a reduction of 12 acres made in the die-off
area. Batis growth and seedling recruitment was good. The problem of exotic vegetation growth in
many areas was highlighted and two new diffuse areas of stressed trees were identified. The presence
of standing water and bacterial mats suggested lack of flushing was responsible. Seagrasses continue
to show decline, attributed to the increased tidal range caused by the dredging work. The one-way
culverts installed at Seagate, thought to have reduced tidal exchange in Outer Clam Bay, were removed
in October to determine whether tidal exchange between Venetian Lagoon and Outer Clam Bay could
be achieved without affecting Clam Pass.
Main die-off area 2002 with notable re-growth
38
lOF ~,
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
2003
Stressed areas identified in 2002 were revisited and no changes were noted in 2003. One of the
aerially depicted mangrove stress locations was found, upon groundtruthing, to actually be an
infestation of exotic plant species. Of significance is a reduction in calculated die-off area to just over
17 acres total with 14 acres in this main die-off region, now classified as recovering. Decline in
seagrass coverage is still noted. Water quality testing within the system does not indicate chronic
degradation so it is still opined that changes in water levels due to increased tidal ranges is the cause of
seagrass declines since initial dredging. Five water level monitors were installed at locations spread
throughout the system in January 2003.
Main die-off area 2003
39
IOF
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
2004
Die-off acreage was estimated at 18 acres total in 2004, with the addition of a new area adjacent to the
Contessa condominium building in Bay Colony and several new small lightning strike areas
throughout the system. Plot 7 continues to show the most dramatic change of mangrove plots where
most exhibit slow change in existing tree number, some losses, some growth and size-class change, but
consistent seedling recruitment. Storm events in 2004 (Charlie, Frances, Ivan, and Jeanne) had
minimal effects with some leaf loss and limb breakage. Seagrass coverage showed some
improvements within channel transects, suggesting that the reduction in flushing that the flap-gate
culverts had entailed may have led to the declines seen over past years, though reductions in coverage
in the bay east of Clam Pass were observed. Additional flushing channels were constructed during dry
season of this year. Water level monitors put in place last year were removed due to repeated
equipment failures.
Main die-off area 2004
40
lOF ~1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
~
Several stressed areas were noted as recovering this year including that adjacent to the Contessa
building where a drainage channel was in need of maintenance and clearing, work which alleviated the
problems. A new die-off area was identified near the County boardwalk and it is suggested that
clogging of channels due to Hurricane Charley may be responsible. Total die-off acreage in 2005 is
estimated at 24.7 acres. Plot 7 and Plot 8 continue to show significant re-growth.
Hurricane Wilma in October of 2005 caused considerable leaf loss, limb breakage and leaf browning
throughout Clam Bay although the constructed flushing channels alleviated extensive ponding that
could have occurred and the system weathered the storm well. Work completed in 2005 included the
last component in flushing channel construction. The decline in sea grass coverage that has been
documented since the 1999 dredging work shows signs of stopping with coverage in the channel
transects apparent and increased density in the bay east of Clam Pass.
Main die-off area 2005
41
lOf J
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
2006
Stress damage from the 2005 hurricane season necessitated the need for a division of the classification
system currently used to define the status of the mangroves in the system. Stressed mangrove zones
are now classified as "die-off area" for mangroves stressed by some factor other than storm events or
"area of concern" for mangroves stressed by storm events. It was estimated in 2006 there were 23
acres of recovery, 12.3 acres of stressed areas of concern and 23.4 acres of die-off area present,
bringing the total area of stressed mangroves to 74.7 acres. Since the last mangrove channels were dug
in 2004 and dredging work continues when needed, most of the monitoring plots have shown
improvements and there has been a significant reduction of die-off in the original locale. Future hand-
cuts may be required to prevent further stress of storm damaged areas over time.
Shoal grass patches are still present in ecologically significant densities within the channel north of the
County boardwalk and just inside Clam Pass mouth. Sea grass beds in Outer Clam Bay are still
reduced compared to the 1999 pre-dredge conditions, but their steady decline since 1999 did not seem
to have continued into 2006.
Main die-off area 2006
42
1 0 F "
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
2007
The storm damage of 2005 added a level of difficulty to subsequent classification of areas within the
system. Extensive defoliation and falling of individual trees meant that areas that could be termed
stressed by the flow issues thought to have been responsible for the original die-off in Clam Bay were
in fact affected by the high winds and storm surge. Approximately 4.9 acres offormerly classified 'die
off area have been reclassified to 'recovered' this year. Stressed areas of concern that are likely not
related to storm damage total about 15 acres while areas of concern that we suspect are due to the
storm events have been estimated at about 25 acres. An additional 20 acres within the original die off
area has not yet fully recovered and so is also included in this category. A total of 10.6 acres of
mangroves are still considered dead, a significant reduction from the original die-off of over 50 acres
in the late 1990's. This brings the total aerial estimate of mangroves that are not at optimum health to
about 70 acres.
Shoal grass patches are still present at viable and ecologically significant densities within the channel
north of the County boardwalk and the bay just inside the mouth of the Pass. Increased densities were
also seen in Outer Clam Bay and sea grass coverage is higher than in years past. The gradual decline
since the 1999 dredging does not appear to have continued this year, the grass beds have expanded in
both number and density. Turtle grass (Thallassia testudinum) was observed back in the system this
year in three distinct locations though this may be the result of the increased survey effort.
Main die-off area 2007
43
IOF s1
CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
6.0 Management Objectives
This chapter outlines specific management objectives for Clam Bay; forming the work-plan portion of
this Management Plan. As stated in the title of the plan, this is a mangrove maintenance and
management plan. The activities and data collection proposed within this section are proposed to
maintain the restoration progress observed to date and further the restoration efforts to the point where
full recovery of the die-off area has been achieved. Each objective is explained and work items listed
along with performance criteria, time-frames and responsible entities.
6.1 Maintain Optimal Hydrographic Environment at Clam Pass
The importance and absolute dependence of the system's health on tidal flushing has been
demonstrated. Continued monitoring of the bathymetry and tidal characteristics at Clam Pass, the
estuary's connection to waters of the Gulf of Mexico, with maintenance dredging as required, is
crucial.
Work Items:
1. Continue Hydrographic Monitoring
Bathymetric data collection will be carried out on an annual basis at stations around Clam Pass.
Bathymetric survey information will be analyzed to determine if the cross section of the Pass is
sufficient to support tidal exchange necessary for mangrove health.
Timeframe:
Once per year in the spring or as needed after dredging or storm events.
Performance Criteria:
Maintain improved tidal flow, improved tidal range, and reduced phase lags. Identity any shoaling
outside of expected parameters.
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
**. (This information may be collected by the Coastal Zone Management (CZM) office as part of
further investigations within the system. If so, coordination with CZM will occur and this information
will be shared between the two parties).
44
lOF 1'1
CLAM SA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
2. Analysis and Comparison of Annual Results
An annual summary of the collected data will be prepared as a written report with graphical and
tabular data presentation. Results will be compared with previous years and with concurrent biological
monitoring results.
Timeframe:
Once per year, fall.
Performance Criteria:
Completion of a written report.
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
3. Maintenance Dredging
A drastic reduction in the flushing capacity of the system due to shoaling within the pass will trigger a
maintenance dredging event.
Timeframe:
As needed.
Performance Criteria:
Dredging conducted to remove shoaling and restore improved tidal flows to mirror or better past post-
dredging improvements. See enclosed design parameters for cross section standards.
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
*** This activity may be undertaken by the Coastal Zone Management office as part of an expanded
scope of work but maintaining at least the minimal cross section needed to support the mangrove
recovery will be a priority regardless of which office completes the work.
45
IOF ,
HM
("n,bl"
EHGNEEAINGtlE51GN
IloNOf1;I't.llTTHG
FOR: PBSD
:0 1
JOB: 13078
07 IL: SITEPLAN
DATUM: NONE
4
SC : 1"= 0'
FIGURE: C-1
5679 STRAND COURT
NAPLES. FL 341 1 0
FAX: (239) 394-2023
PHONE: (239) 5~4-2021
www.humlstonClndmoor..com
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HM
(n"~lA
EN6l\EEllIHGOES1GN
ANDP'E~""mlNGi
lOP 'f
OEP
PLAN
5679 STRAND COURT
NAPLES. f"L .3411 0
FAX: (239) 594- 2025
PHON" (239) 5H-2021
www.humlstonanc:lmoore.com
FOR: PBSO
OAT' 5 1 08
JOB: 1307B
I : SITE PLAN
ATUM, NONE
sc ,"= O'
FlGURE: 0-1
lor '1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
6.1 Maintain Optimal Hydrographic Environment of Tidal Creeks
Achieving tidal exchange throughout the system has been shown to be critical to the health of the
mangrove forest. Adequate flushing characteristics of the tidal creeks throughout the system must be
maintained in order to support the restoration efforts undertaken to date. Dredging carried out in 1999
as part of the CBRMP, was focused on three shallow areas. Revised management goals necessitate
observation of the greater system to allow early identification of restricted areas.
Work Items:
1. Continue Hydrographic Monitoring
Bathymetric surveys will be carried out on a regular basis at the channel locations previously dredged.
Other areas may also be surveyed if shoaling or constriction of the waterway is observed that has the
potential to adversely impact (restrict) flows through the system
Timeframe:
Every fifth year (or as needed after a storm event) for the internal channels.
Performance Criteria:
Cross sectional bathymetry should be maintained at a minimum of the 1999 cross section area to
facilitate improved tidal flow and ranges. See enclosed design parameters for cross section standards.
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
2. Analysis and Comparison of Monitoring Results
A summary of the collected data will be prepared as a written report with graphical and tabular data
presentation. Results will be compared with previous surveys and with concurrent biological
monitoring results.
Timeframe:
Whenever interior channel bathymetric data is collected
Performance Criteria:
Inclusion in the annual written report (when collected)
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
49
lOF ,
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
3. Maintenance Dredging
A reduction in the flushing capacity of the system will trigger a maintenance dredging event.
Timeframe:
As needed.
Performance Criteria:
Restoration of the 1999 cross sectional area. See enclosed design parameters for cross section
standards.
Responsible Personnel:
PBSD
Hydrographic Engineers: (Currently Humiston & Moore, Inc.)
4. Mangrove Trimming
In addition to the potential for shoaling constricting the waterways, fallen trees and hanging branches
also pose a threat to the maintenance of the flushing capacity of these waterways. Keeping the
waterways clear and open is important both for optimal tidal exchange as well as for aesthetic and
recreational reasons. Areas of excessive overgrowth or clogging by fallen branches and debris will be
removed per State (DEP) mangrove trimming guidelines on an as-needed basis. PBSD will notifY the
project managers who will document pre-trimming conditions and in turn notifY DEP prior to any
trimming work being done. Post-trimming conditions will also be documented. See enclosed
trimming protocol for additional information regarding DEP guidelines.
.
Interior channel- mangrove branch trimmingfor improved flushing and access.
50
1 0 F f1
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
Timeframe:
As needed.
Performance Criteria:
Overhanging or broken branches, limbs, and/or roots will be removed to maintain flows through
channels and creeks.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
51
HM
COASTAL
EM>lNE~GPESlGN
ANPl'lllNlIllNG
DREDGE
FOR: PBSO
DATE: 05 12 08
JOB: 13078
10Ft
SITE PLAN
5679 STRAND COURT
NAPLES. fL 3411 0
FAX: (239) 594-2025
PHONE: (239) 59"-2021
www.huml:Jlonandmoor..com
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5679 STRAND COURT
NAPLES. FL .54110
FAX: (239) 594-2025
PHONE, (239) 594-2021
www.humlstonandrnoore.com
HM
FOR: PBSD
E: 05 12
JOB: 13078
08 FI : SITEPLAN
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CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
6.3 Maintain Optimal Hydrographic Environment of Flushing Channels
Biological monitoring work has conclusively shown that the improved drainage which has been
achieved through excavation of small flushing cuts within the forest basin has greatly alleviated
ponding and contributed to the observed improvements in Clam Bay.
Work Items:
1. Monitor and Maintain Existing Flushing Channels
The condition of flushing channels will be evaluated as part of the annual biological monitoring.
Should debris or filling in of any areas be noted, work crews will be dispatched to hand-clear the areas
in question.
Timeframe:
Monitoring as per biological surveys, work completed as needed.
Performance Criteria:
All channels should be functioning to alleviate ponding as designed.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
(Currently Lewis Environmental Services, Inc.)
57
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CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
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58
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CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
2. Alleviate Ponding with New Channel Construction
Should new areas of ponding or surface accumulation of water bc identified during monitoring work,
project managers may carry out additional channel excavation.
Timeframe:
Monitoring as per biological surveys, work completed as needed.
Performance Criteria:
Insure that there are no areas of extensive surface water accumulation within mangrove forests of the
Clam Bay system. See enclosed design parameters for cross section standards of flushing cuts.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
(Currently Lewis Environmental Services)
2007 growth and visible channel cut in same main die-
off area.
2003 new growth resulting from channel cuts in main die-off area.
59
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SECTION Z - Z
TYPICAL EXISTING AND PROPOSED CROSS-
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CHANNELS AND SIDE DRAINAGE CHANNELS.
N.T.S.
APPLICANT
CLAM BAY
PELiCAN BAY SERVICES DIVISION
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CLAM BA Y MANGRO VE MANA GEMENT PLAN
Pelican Bay Services Division
May \5, 2008
6.4 Maintain Stormwater Management System, Including the Berm/Mangrove Interface
Proper functioning of the Pelican Bay drainage system is a key element for healthy communities in
Clam Bay. Without sufficient attenuation of the nutrient and chemical loads in surface water run-off,
water quality in the natural system can deteriorate. Storm and freshwater studies completed in 2000
per requirements of original permits, showed that minimal additional storage area for surface water
run-off was available. It was concluded that maintenance of the system as constructed was the only
feasible and cost effective course of action.
Work Items:
1. Maintain Surface Water Storage, Conveyance, and Distribution Capabilities
Surface water storage areas include swales, lakes and ditches throughout Pelican Bay as well as the
collection and spreader swales on either side of the water management berm. These areas can become
clogged with trash, vegetative debris, sediment, and volunteer seedling generation. Routine
maintenance activities are needed on an on-going basis to keep these storage. and conveyance areas
clean and functioning optimally. Trimming or removal of vegetation blocking the swales will be
conducted. Periodic spraying of clogging vegetation with EP A approved herbicides may be conducted
in conjunction with removal of debris or sediment. Clogging by exotic or nuisance vegetation is
further discussed in objective 7.8.
Timeframe:
Observations carried out daily, maintenance work as needed.
Performance Criteria:
No restriction or blockage in any part of the surface water management system.
Responsible Personnel:
Pelican Bay Services Division
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Pelican Bay Services Division
May 15, 2008
2. Maintain Physical Components of the Stormwater Management System
Culverts, pipes and flashboard risers are some of the physical parts that make up the drainage system
for Pelican Bay. For the system to operate as designed, no structural deficiencies should exist in any
part of the system. Any breakages or weak areas should be rectified. Flashboard risers should remain
in place as specified in the South Florida Water Management District Permit.
Timeframe:
Observations carried out daily, maintenance work as needed.
Performance Criteria:
No loss of integrity in any part of the surface water management system.
Responsible Personnel:
Pelican Bay Services Division
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CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
6.5 Manage and Improve Water Quality
Clam Bay is a unique estuarine system in that the majority of the watershed (the surrounding upland
areas from which freshwater inputs reach the bays) is a developed area. Sustaining a healthy natural
environment in a semi-artificial situation is a challenge embraced and successfully met by Pelican Bay
residents and management. The stormwater system was designed to attenuate rainwater run-off so that
flows reaching natural areas are of the highest water quality standards possible. This goal entails
monitoring of water quality parameters, maintenance of the stormwater system (objective 7.4) along
with a willingness to consider any changes that might improve the system.
Work Items:
1. Continue Water Quality Monitoring
Sampling and analysis of a suite of parameters has been carried out since 1981 as a commitment of the
SFWMD permit for the development. This regime should be continued, with the possibility of adding
parameters to make this sampling effort consistent with other efforts in the City of Naples and Collier
County. The current suite of sampling parameters is included here:
.0 Temperature
. Conductivity
. pH
. Total Dissolved Solids
. Dissolved Oxygen
. Ammonia
. Nitrate
. Nitrite
. Total Nitrogen
. Ortho-phosphate
. Total Phosphorus
. Biological Oxygen Demand
. Salinity
. Silica Dioxide
. Chlorophyll a
. Phaeophytin a
. Total Carbon
When possible, information on water clarity should also be collected.
Timeframe:
Monthly sample collection to be analyzed by a state-approved lab for the duration of the permit.
Annual collation of results.
Performance Criteria:
No negative change in designation of water bodies should be observed, i.e. at least the minimum State
standards (per 62.302.530 F.A.C.) for each parameter should be maintained.
Responsible Personnel:
PBSD for sample collection and processing
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Pelican Bay Services Division
May 15, 2008
Sampling Locations:
f' T=U &: A.uociaIes.llll:.
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2. Analysis and Comparison of Annual Results
An annual summary of the collected data will be prepared as a written report with graphical and
tabular data presentation. Results will be compared with previous years and with concurrent biological
monitoring results.
Timeframe:
Sample collection on a monthly basis and report generation once per year.
Performance Criteria:
Completion of a written report with relevant tables and exhibits. Appropriate QNQC protocols should
be established and adhered to with respect to sample collection and data compilation.
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Pelican Bay Services Division
May 15,2008
Responsible Personnel:
PBSD
Environmental Project Managers (Currently Turrell, Hall & Associates, Inc.)
3. Identify Watershed Improvements
Advancements in environmental best management practice continue to be made. Where any protocol
is considered to have potential benefits and is practical and cost-effective, it should be considered for
implementation within the system. This could include:
. Modification to irrigation systems.
. Changes in fertilizer/pesticide products and applications.
. Modification to surface water management system.
. Other BMP improvements that may come about.
. Resident and visitor educational efforts.
. Landscape contractor education or requirements.
. Fountains and/or bubblers.
Timeframe:
On-going.
Performance Criteria:
Not applicable.
Responsible Personnel:
PBSD
Environmental Project Managers: (Currently Turrell, Hall & Associates, Inc.)
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Pelican Bay Services Division
May 15, 2008
6.6 Monitor Ecosystem Communities
The health of seagrasses and condition of mudflats and other benthic areas within Clam Bay sheds
light on associated tidal flushing and water quality issues. Marine life supported throughout the system
(i.e. fish, macro-invertebrates, and micro-invertebrates) can provide indicators as to the health of the
ecosystem. The importance of understanding the system in its entirety cannot be underestimated.
Work Items:
1. Annual Sea grass and Benthic Community Monitoring
Continuation of existing survey work focused on tidal flats east of Clam Pass, the channel south to
Outer Clam Bay and Outer Clam Bay. Snorkel surveying of the established transects will continue to
track those specific seagrass beds. In order to obtain a more detailed overview of the entire Bay and to
track more ephemeral grasses throughout the Bay, twice-a-year random sampling may be conducted.
Even further expansion of the transect surveys conducted every five years or so can provide an
estimation of coverage of seagrasses within entire bay. Care must be taken with this technique due to
the fact that ambient environmental conditions can drastically affect seagrass growth in any given year.
Timeframe:
Annual monitoring work in late summer. Bi-annual work conducted mid spring and late summer. Full
Bay-wide survey conducted every three to five ears.
Performance Criteria:
Completion of a written report containing results of survcy efforts undertaken in the give year.
Responsible Personnel;
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
u* Some of this information may be collected by the Coastal Zone Management (CZM) office as part
of further investigations within the system. If so, coordination with CZM will occur and this
information will be shared between the two parties.
2. Offshore Hardbottom Community Monitoring
Continuation of existing monitoring and observations of the hard bottom community just offshore from
Clam Pass. Monitoring has been conducted prior to and immediately following Pass dredging and
beach renourishment activities.
Timeframe:
Annual monitoring work in late summer or as needed during dredging events.
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May 15, 2008
Performance Criteria:
Completion of a written report.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
*** This information is currently being collected by the Coastal Zone Management (CZM) office as
part of the mitigation requirements for the latest (2006) beach re-nourishment project. Coordination
with CZM will occur to insure that this information is collected and shared.
3. Marine Organism Monitoring
The last systematic marine organism survey effort for Clam Bay was conducted as part of the
formulation of the 1995 Inlet Management Plan for Clam Pass. Collection and documentation of
seagrass, algae, invertebrates, and fish species found throughout the system will occur. This
information will be updated and compared to the 1995 information. Periodic sampling efforts can then
be undertaken so that changes or shifts in species richness or concentration can be compared. This will
provide more data to formulate future management activities or goals and support assertions that may
be made with regards to overall system health.
Timeframe:
Monitoring on a three to five year schedule.
Performance Criteria:
Creation of a repeatable survey methodology and completion of a written report and the completion of
each survey effort.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
*** This activity is being contemplated by the Coastal Zone Management office as part of an expanded
scope of work. If so, results from the survey efforts will be examined in conjunction with other efforts
undertaken as part of this Management Plan.
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Pelican Bay Services Division
May 15, 2008
6.7 Monitor Mangrove Communities
Monitoring work has shown how crucial early detection of stress can be in responding quickly to
ponding or signs of deterioration. Considerable savings in money and time can be realized before
large-scale losses ensue. A long-term observation of fixed plots shows how the system responds to the
physical changes carried out and identifies the most effective of these. Close examination of infra-red
aerial photography also can help to highlight stressed areas so that survey efforts in the mangrove
community can be concentrated. In addition, one of the best monitoring activities comes as a result of
the residents of Pelican Bay. Residents within the high rises often call to report stressed or changing
areas within the system even before they are observed by the project managers. Living over the forest
and observing it every day gives these residents a unique perspective that allows them to quickly notice
even minute changes within the forest.
Work Items:
1. Annual Mangrove Community Monitoring
Continuation of existing survey work focused on fixed vegetation plots as well as aerial photography
. of the entire forest system.
Timeframe:
Annual monitoring work in late summer.
Performance Criteria:
Completion of a written report documenting monitoring results.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
2. Annual Hydrographic Monitoring Within Forest Area
Install and monitor water level gauges within the forest system.
Timeframe:
Install gauges during monitoring work in late summer.
Performance Criteria:
Collect data at least quarterly during year. Completion of a written report annually.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
69
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1(".
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
3. Mangrove Trimming
Periodic trimming of mangroves is required along the waterways and pathways through the system.
Trimming to keep open the waterways for tidal flushing is discussed earlier in this section but
additional trimming to keep the canoe trail, berm, and boardwalks is also required to maintain access
through these areas as well as for resident and visitor safety. The roadway along the western side of
Bay Colony and the road into the Strand are also subject to overhanging mangrove branches and these
roadways will also be kept clear of mangrove branches through approved trimming activities. Areas
of excessive overgrowth or blockages caused by leaning trees and fallen branches will be removed per
State (DEP) mangrove trimming guidelines on an as-needed basis. PBSD will notify the project
managers who will document pre-trimming conditions and in turn notify DEP prior to any trimming
work being done. Post-trimming conditions will also be documented. See enclosed trimming protocol
for additional information regarding DEP guidelines.
Timeframe:
As needed.
Performance Criteria:
Overhanging or broken branches, limbs, and/or roots will be removed to maintain access through and
along the canoe trail, berm, and boardwalks. .
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
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Pelican Bay Services Division
May 15,2008
6.8 Exotic and Nuisance Vegetation Control
The spread of exotic vegetation is a threat to native communities and can reduce the effectiveness of
the stormwater management system. Clogging of lakes and drainage swales with aquatic weeds has
been a historic problem in Pelican Bay, which has been addressed through herbicidal treatments. A
large-scale cattail removal effort was undertaken in 2002 for areas west of the water management
berm. A small portion of the removal area was replanted with natives as an experimental effort.
Invasive exotics such as Brazilian pepper and Moon vine have been observed in several basin forest
areas. These exotics and any others observed in the system are noted and removed.
Post-restoration conditions
Cattail infestation along perimeter of mangrove forest. (pre-restoration conditions)
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May 15, 2008
Work Items:
l. Exotic Species Removal
Treatment and removal of observed exotic species shall be carried out throughout the system on an as-
needed basis.
Timeframe:
Maintenance and treatment as needed. Coverage assessment will be made on an annual basis
following biological monitoring surveys.
Performance Criteria:
Areal coverage of exotic species not to exceed 5% between maintenance activities.
Responsible Personnel:
Pelican Bay Services Division
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Pelican Bay Services Division
May 15, 2008
6.9 Continue and Improve Community Awareness and Involvement
The strength and importance of community support for mangrove and habitat restoration is a unique
feature of work in Clam Bay. Residents of Pelican Bay accepted a benefit assessment to raise funds to
carry out initial enhancement and restoration work. Work-shops and public meetings are continually
well attended. The community has also sponsored educational work such as a canoe / kayak trail and
guide, a field guide of the plants and animals in Clam Bay, interpretative signage, and a documentary
film of the restoration efforts undertaken to date. Recognition and nurturing of this important facet of
the project is the focus of this management objective.
Work Items:
1. Maintain Trails and Informational Signage within System
Periodic maintenance and repair of the canoe trail markers and interpretive signage must be undertaken
to keep these items in good viable condition. Periodic updates on the status of the canoe trail (i.e.
navigability and signage status) should be provided to the FFWCC.
. Timeframe:
Annual inspection of signage, and repair or replacement when needed. Updates to FFWCC regarding
the canoe trail should be provided every three years.
Performance Criteria:
Presentation of written and verbal report documenting inspection and repair actions undertaken during
the past year.
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
and sub-consultants as appropriate.
2. Annual Meetings
Results of monitoring work and a summary of annual efforts and planned activities are presented to the
Pelican Bay Services Division management board via public meetings on an annual basis.
Timeframe:
Per scheduled public meeting.
Performance Criteria:
Presentation of written and verbal report documenting work monitoring and surveying work conducted
during the past year.
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May 15,2008
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
and sub-consultants as appropriate.
3. Participation in Information Exchange with Concerned Parties
The Collier County Coastal Zone Management office in conjunction with the City of Naples and
various citizens groups has sponsored an Estuary Discussion Group relative to Clam Bay. The purpose
of this group is to discuss and explore work efforts outside of the scope of this Management Plan
designed to enhance and improve conditions within not only Clam Bay but also waters to the south.
Pelican Bay will provide any data gathered through the implementation of this Management Plan to the
discussion group so that it can be included or incorporated into any plans or activities contemplated by
that group. In addition, PBSD will continue to foster dialogue and information sharing with the public.
Examples may include organizing informal workshops, providing items for local newsletters or other
print media, or other, information disseminating alternatives.
Timeframe:
As requested
Performance Criteria:
Not applicable
Responsible Personnel:
Pelican Bay Services Division
Project Managers: (Currently Turrell, Hall & Associates, Inc.)
and sub-consultants as appropriate.
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Pelican Bay Services Division
May 15, 2008
Clam Bay Management Plan Amendments
Studies within the Clam Bay Estuary as well as in other similar local ecosystems are either ongoing or
expected to occur within the asked for time frame of this document. The Management Plan is not
expected to be a static document and ongoing research and data collection related to water quality,
hydrographic changes in the various areas of the system, benthic community health, mangrove
community health, exotic and nuisance vegetation control and public education will be conducted
and/or collected. Conclusions, recommendations, or alternative management activities that come about
as a result of studies conducted outside of the scope of this management plan will be examined and
considered by the Pelican Bay Services Division and its consultants. Those modification that are
found to be viable, pertinent, and economically feasible alternatives or additions allowed under the
scope of this plan will be added to the plan. Those changes in management activities or new work
items that are outside of the scope of the Plan but are considered important or practicable by the
Pelican Bay Services Division and its consultants will be submitted to DEP and the ACOE for
consideration and inclusion into this management plan.
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May 15, 2008
Clam Bay Project Research Paper Bibliography
I. Gee & Jensen Engineers, Architects and Planners, Inc., 1978, Hydrographic Study Clam Bay
System Collier County, Florida for Coral Ridge- Collier Properties Inc., report.
2. Tri-County Engineering, Inc., 1971, Tidal Datum Plane Determination for the Co1\ier
Company.
3. Davis, R.A. Jr., Gibeaut, James C., 1990, Historical Morphodynamics ofInlets in Florida:
Models for Coastal Zone Planning, Technical Paper.
4. Department of Coastal and Oceanographic Engineering, Florida Engineering and Industrial
Experiment Station, University of Florida, 1970, Proposed Navigation Entrance to Clam Bay
on Marco Island, Collier County, Marco Island Development Corporation, technical paper.
5. February 1979, Environmental Assessment Northwest Fill Area for Pelican Bay, Turrell &
Associates, Inc., technical paper.
6. Devlin, Donna 1., Gore, Robert H., Proffitt, C. Edward, 1987, Preliminary Analyses of Seagrass
. and Benthic Infauna in Johnson and Clam Bays, Collier County, Florida, Natural Resources of
Collier County Florida, technical paper.
7. Devlin, Donna J., Collier County Beach Renourishment Project: A Survey of the Marine
Benthos, technical paper.
8. Heald, Eric J., Tabb, Durbin C., Roessler, Martin A., Beardsley, Gary L., Ward, Gerlad M.,
Durrance, Dallas H., Yeend, John S., 1978, Carbon Flows in Portions of the Clam Pass
Estuarine System, Collier County, Florida, Tropical Biolndustries Company and Gee and
Jenson, Engineers-Architects-Planners, Inc., technical paper.
9. 1994, Clam Bay Natural Resources Protection Area Management Plan Draft, Collier County
Natural Resources Department, technical paper.
10. Worley, Kathy, Hennig, Markus, July 2000, Clam Bay Mangrove Projects: Interim Summary
of Statistical Results, The Conservancy of Southwest Florida, technical paper.
II. Benedict, Mark A., Harvey, Judson W., Curran, Maura E., 1983, Part I Beach Management
Planning and Implementation Strategies at the Local Level, Natural Resources of Collier
County Florida, technical paper.
12. Benedict, Mark A., Harvey, Judson W., Curran, Maura E., 1983, Part II The Beach in Collier
County: A Model in Southwest Florida, Natural Resources of Collier County Florida, technical
paper.
76
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CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
13. Benedict, Mark A., Harvey, Judson W., Curran, Maura E., 1983, Part 3 A Resource
Management Program for the Coastal Barriers of Collier County Florida, Natural Resources of
Collier County Florida, technical paper.
14. October 1990, Collier County Sand Source and Environmental Report Phase II Hard Bottom
Characterization, Continental Shelf Associates, Inc., technical paper.
15. Hartwell, Richard W., Hatcher, James M., Grabe, Stephen, August 1994, Clam Bay Natural
Resources Protection Area (NRPA), Collier County Environmental Services Division,
Publication Series NR-SP-94-01, technical paper.
16. Dean, R.G., O'Brien, M.P., December 1987, Florida's West Coast Inlets Shoreline Effects and
Recommended Action, Coastal and Oceanographic Engineering Department and Division of
Beaches and Shores Department of Natural Resources, technical paper.
17. Heald, EJ., Roessler M.A., Beardsley, G.L., 1979, Litter production in a Southwest Florida
Black Mangrove Community, Reprint from Proceedings of the Florida Anti-Mosquito
Association 50th Meeting, Abstract.
18. May 1970, Coastal Engineering Study of the Proposed Clam Pass Improvement, The Collier
Company, Department of Coastal and Oceanographic Engineering, technical paper.
19. Sarkar, Chiranjib K., October 1972, Hydrographic Investigation of the Clam Bay System, Tri-
County Engineering, Inc., Technical paper.
20. June 1979, A Comparative Study of the Water and Carbon Flows of Upper Clam Bay, Tropical
BioIndustries and Missimer and Associates, Inc., technical paper.
21. Heald, Eric J., Roessler, Martin A., December 1979, Invertebrate Population Studies in the
Vicinity of Upper Clam Bay, Collier County, Florida, Tropical BioIndustries, technical paper.
22. Heald, Eric J., July 1983, Populations ofMelamous coffeus and Cerithidea scalariformis West
of Upper Clam Bay, Collier County, Florida, Tropical BioIndustries, Inc., technical paper.
23. Heald, Eric J., July 1983, Fish Populations of Tidal Ponds West of Upper Clam Bay Collier
County, Florida, Tropical BioIndustries, technical report.
24. Crewz, David W., 1989, Clam Pass Park mangrove damage, Department of Natural Resources
Interoffice Memorandum.
25. Wanless, Harold R., Risi, J. Andrew, July 1996, Observations on Barrier Beach Stratigraphy
and Groundwater Flow in the Vicinity of the Mangrove Die Off Adjacent to the Strand, Pelican
Bay, Collier County, Florida, Collier County Natural Resources Department, technical report.
26. Wanless, Harold R., February 1975, Report on the Beaches of Naples, Florida, technical report.
77
lOP 1
CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
27. Hawkins, Mary Ellen, Obley, Ross P., "Pelican Bay-Visit and Revisit." Urban Land Vol. 40,
No II., (December 1981) 21-27.
28. Lorenz, William, D. Jr., January 1996, Clam Bay NRPA Nutrient Reduction Program Draft,
technical report.
29. Scott, Will, December 1993, "Water, Water...Everywhere what you may not know about
Pelican Bay's innovative water management system." Oraft- memorandum, ABB.
30. Heald, Eric J., January 1972, Investigation of Fluctuations in the Clam Bay System, Tri-County
Engineering, Inc and Tropical BioIndustries, technical report.
31. Acquaviva, Daniel J., October 1993, Responses to Development of Regional Impact Ouestions
Number 14 and 17 Pelican Marsh Community, North Naples. Florida, ViroGroup
Inc./Missimer Division, technical paper.
32. Davis, Richard A Jr., Gibeaut, James, January 1990, Historical Morohodvnamics of Inlets in
Florida: Models for Coastal Zone Planning. Department of Geology, University of South
Florida, technical report.
33. Knapp, Michael S., Burns, Wm. Scott, Sharp, Timothy S. Preliminary Assessment of the
Groundwater Resources of Western Collier County. Florida. Technical publication #86-1.
February 1986.
34. "Modification of Permit No. 11-00065-S Pelican Bay." Pelican Bay Improvement District Staff
Report. March 1983.
35. Preliminary Hydrographic Assessment Clam Bay Systems. Tackney & Associates, Inc., August
1996.
36. Hole, Montes & Associates, Inc., Post, Buckley, Schuh & Jernigan, Inc. Water Management
Plan Construction Permit Application for Svstems 4 and 5. Pelican Bay Improvement District,
September 1982.
37. Goodrick, Robert L. "Pelican Bay - Environmental Considerations, permit No. 11-00065-S."
Memorandum to file, January 15, 1982.
38. Hermanson, George H. "Proposed Modifications to Drainage Area 3, System No. V." Hole,
Montes & Associates, Inc., January 28, 1988.
39. "Modification of Permit No. 11-00065-S Pelican Bay." Pelican Bay Improvement District Staff
Report, 1983.
78
lor i
CLAM BAY MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15,2008
40. Florida. South Florida Water Management District. In Reply to Request for Modification of
Surface Water Management Permit No. 11-00065-S." October 19, 1978.
41. Stanley W. Hole and Associates, Inc., Post, Buckley, Schuh & Jernigan, Inc. Water
Management Plan Permit ADDlication. Pelican bay Improvement District, April 1978.
42. Florida. Collier County Environmental Services Division Inlet Management Resources.
Bibliography.
43. Florida. South Florida Water Management District. ADDlication No. 04718-C for Surface Water
Management Permit Staff ReDort. August 1978.
44. Post, Buckley, Schuh & Jernigan, Inc. Consulting Engineers and Planners. Engineering ReDort
Water Management System VI for the Pelican Bav ImDrovement District. February 1984.
45. Wilson, Miller, Barton & Peek, Inc. Pelican Bav/Clam Bav Water Management System
Contributing Areas. CAD drawings. October 1998.
46. Coral Ridge-Collier Properties, Inc. Pelican Bav A Planned Residential Community.
47. Florida. Natural Resources of Collier County Florida. Part 5 Coastal Zone Management Units:
Atlas. 1984.
48. Suboceanic Consultants Inc. NaDles Beach Study ReDort. University of Florida Coastal
Engineering Archives. August 1980.
49. Wilson, Miller, Barton & Peek, Inc. Pelican Bav Mangrove Investigation. Pelican Bav Water
Management Svstem-Stormwater Detention Volume and Water Budget Analvses. April 1996.
50. Continental Shelf Associates, Inc. Collier County Sand Source and Environmental ReDort
Phase I Hard Bottom MaDDing. Coastal Engineering Consultants, Inc, October 1990.
51. Collier County Pelican Bay Services Division. Clam Bav Restoration and Management Plan.
Florida Environmental Resource and Joint Coastal Permit Application, Federal Dredge and Fill
permit Application. April 1997.
52. Missimer and Associates, Inc. Subsurface Water and Carbon Floes to Portions of the Clam Pass
Estuarine System. Collier County. Florida. Technical report, March 1979.
53. The Collier Company. Coastal Engineering Study of the ProDosed Clam Pass ImDrovement.
Engineering and Industrial Experiment Station, College of Engineering, University of Florida.
May 1970.
54. Crewz, David W. Florida. Department of Natural Resources. Clam Pass Mangrove Damage.
Interoffice Memo, May 1989.
79
lOF ~
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
55. Wilson, Miller, Barton & peek, Inc. Figure I Existing Stormwater Flows on an Outgoing Tide
(Diagrammatic). Map of Clam Bay.
56. Wilson, Miller, Barton & Peek, Inc. Figure 2 Proposed Expedited Conveyance Plan of
Stormwater Flows on an Outgoing Tide (Diagrammatic). Map of Clam Bay.
57. Acquaviva, Daniel J. Site SDecific Investigations to Obtain Hvdrologic Information for the
Design of Horizontal Well Svstems at Pelican Bav. NaDles. Florida. Water Resource Solutions,
Inc., September 1999.
58. Hole, Montes & Associates, Inc. "Evaluation of an Onsite Irrigation Water Source." The
Pelican Bay Improvement District, April 1984.
59. Post, Buckley, Schuh & Jernigan, Inc. Hvdrologv and Geology of a ProDosed New Well Field
Site in North Collier. Florida. For the Pelican Bay Improvement District, March 1978.
60. Obley, Ross P., letter to Jim Ward. July 1999.
61. Gee & Jenson Engineers, Architects & Planners, hie. "Pelican bay System VI Drainage." April
1983.
62. Wilson, Miller, Barton & Peek, Inc. "Pelican Bay." Memo to file. May 1987.
63. Florida. "Aquatic Plant Management Annual Operations Report." Florida Department of
Environmental Protection Bureau of Aquatic Plant Management. January 1999.
64. Florida. "Agreement for Delivery and use of Treated Wastewater Effluent for Spray Irrigation."
Official record of Collier County, Florida. Interoffice Memo. August 1996.
65. Florida. Department of Environmental Protection. "Aquatic Plant Management Permit."
January 1999.
66. Davis, Richard A., Hine, Albert C., Bland, Michael J. "Midnight Pass, Florida: Inlet Instability
Due to Man-Related Activities in Little Sarasota Bay." Coastal Sediments '87, May 1987.
67. Metz, Charles. "More than Mangroves at Stake." April 1997.
68. Florida. South Florida Water Management District. "Request for Modification of Surface
Water Management Permit No. Il-00065-S." Staff Report. October 1978.
69. Florida. South Florida Water Management District. "Water Use Permit." June 1998.
80
lor,
CLAM BA Y MANGROVE MANAGEMENT PLAN
Pelican Bay Services Division
May 15, 2008
70. Hartman, P.K. "Excavation Permit No. 59.156." Collier County Water Management
Department letter, March 1983.
71. Fox, Lloyd II. "Collier County- DW Spray Irrigation- Unrestricted Public Access (Residential)
Groundwater Monitoring." Department of Environmental Regulation, State of Florida, letter.
May 1987.
72. Florida. South Florida Water Management District. "Water Use Permit Staff Report." June
1978.
73. Florida. South Florida Water Management District. "Surface Water Management Staff Review
Summary." April 1992.
81
@
10 F-ffi
NOTICE OF PUBLIC MEETING
BOARD OF COUNTY COMMISSIONERS. COLLIER COUNTY. FLORIDA
Tuesday, May 18, 1999
9:00 A.M.
'-.
Notice is hereby given that the Collier County Board of County Commissioners will meet in the
Board's Chambers on the Third Floor of the Administration Building (Building F) at the Collier
County Government Complex, Naples, Florida, to discuss the review an<l authorization of
proposed language developed by staff and the Ad Hoc Comprehensive -Plan StandardS
- Committe~ for remedial amendments in resp.o~se .t~ findings of non:comEliance o~ the County's
Growth Mana~ement Phiil 61' the_~te of Elorida Depal'!JPent of Community ATlaifs and the
Division of Administrative Heari~gs, at the 'a1:)()ve-~tated time anctdate. - .. ..~-
Copies of the agenda for said meeting will be made available to the press and may be obtained at
the office of the County Administrator, same location, same period of time.
Any person who decides to appeal a decision of this Board will need a record of the proceedings
pertaining thereto, and therefore may need to ensure that a verbatim record of the proceedings is
made, which record includes the testimony and evidence upon which the appeal is to be based.
BOARD OF COUNTY COMMISSIONERS
COLLIER COUNTY, FLORIDA
PAMELA S. MAC'KIE, CHAIRWOMAN
DWIGHT E. BROCK, CLERK
By: /s/ Maureen Kenyon
Deputy Clerk
Community Development & Environmental Services Division
Memorandwn
From:
The Board of County Commissioners
Vincent A. Cautero, AlCP, CD & ES Administrator J1xJ--
lOF
.~
To:
Re:
Additionalfuformation for May 18, 1999 Board Meeting
Date:
Wednesday, May 12, 1999
The Comprehensive Standards Ad Hoc Committee is scheduled to meet on Thursday and
Friday, May 13th and 14th, and tentatively on Monday, May 17lh. . Therefore, in addition
to the information contained in the attached executive swnmary, it will be necessary for
staff to hand deliver additional information to the Board on Friday and Monday
afternoon, as well as on Tuesday morning at the Board meeting.
RECEIVEO COUNTY AOMINISTRATORS OFFICE
May 1 ~ 1999
ACTION
FILE
cc:
Bob Fernandez, County Administrator
Sue Filson, BCC Administrative Assistant
Bob Mulhere, AlCP, Planning Services Director
Bill Lorenz, P.E., Natural Resources Director
J
I
consideration of their purpose and the efficacy of the programs
to be established to help attain these objectives and realize 10 F
their purpose. Conservation Objective 1.1, with its policies,
establishes the Environmental Resources Management Program, whose
- ------ --------_._-----_._~~-===;::>--
~rpo:'e ~s...to i~nt:-ify, ~~~e,,, and ~rotect tproperlY, )
l,'appropriatelJ(~nd effectively"Ja~uI"al resources, ~clud~n'3_~
species of special status. Conservation Obj~~e 1.3, with its ~
",.--- ... .-.-- ~.----------.....
~_c~ '~~"a~~~s~he NRPA ir~~~se .:~!pose is ~=tJ-r()~i9
c;~g~~~~ or p~tent~a.~lY endangered wildlife an~ plant life. ~
81. The broader scope of the Environmental Resources
Management Program is offset by its offer of only conditional
protection, as disclosed by the three quoted adverbs.
The highly
conditional promise of Conservation Objective 1.1 means that this
objective and its policies do not require much in the way of
supporting data and analysis.
For this reason, DCA and
Intervenors have failed to prove that Conservation Objective 1.1
and policies 1.1.1 and 1.1.2 are not supported by data and
analysis.
(Y ~The focus of Conservation Objectiv,=--.l.}_a!1ci. ~olicy
-X-
1.3.1 is narrower- -limited to endangered species and po~en~ially
---- ~--- -------- -.--
-
endangereci speciesuand its promise of protection is__._
-- ---.-- -- ~_._-------..
unconditional.
~~-..~ -'-~
species is threatened species and
A fair definition of potentially endangered
~
~
species .<Jf_ special concern, so
-==-.--'.----- --_.~-~- IJ
use the phrase, 1I1isted soeci~ct t1
._- -'-. .. -....GENO...ITiM
.-----=- No. 0<
this recommended order shall
59
MAY 1 8 1999
pa. 4:> do.
lOF'
3. Authorization to submit to DCA proposed language
developed by Staff and the Ad Hoc comprehensive Plan
Standards Committee for remedial amendments in
response to findings of non-compliance of the County's
Growth Management Plan by DCA and the Division of
Administrative Hearings.
4. Adjourn.
COLLIER COUNTY
BOARD OF COUNTY COMMISSIONERS
lor }"~
~
AGENDA
Tuesday, May 18, 1999
9.00 a.m.
NOTICE. ALL PERSONS WISHING TO SPEAK ON ANY AGENDA ITEM
MUST REGISTER PRIOR TO SPEAKING. SPEAKERS MUST REGISTER
WITH THE COUNTY ADMINISTRATOR PRIOR TO THE PRESENTATION OF
THE AGENDA ITEM TO BE ADDRESSED.
COLLIER COUNTY ORDINANCE NO. 99-22 REQUIRES THAT ALL
LOBBYISTS SHALL, BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES
(INCLUDING, BUT NOT LIMITED TO, ADDRESSING THE BOARD OF
COUNTY COMMISSIONERS), REGISTER WITH THE CLERK TO THE BOARD
AT THE BOARD MINUTES AND RECORDS DEPARTMENT.
REQUESTS TO ADDRESS THE BOARD ON SUBJECTS WHICH ARE NOT ON
THIS AGENDA MUST BE SUBMITTED IN WRITING WITH EXPLANATION
TO THE COUNTY ADMINISTRATOR AT LEAST 13 DAYS PRIOR TO THE
DATE OF THE MEETING AND WILL BE HEARD UNDER "PUBLIC
PETITIONS".
ANY PERSON WHO DECIDES TO APPEAL A DECISION OF THIS BOARD
WILL NEED A RECORD OF THE PROCEEDINGS PERTAINING THERETO,
AND THEREFORE MAY NEED TO ENSURE THAT A VERBATIM RECORD OF
THE PROCEEDINGS IS MADE, WHICH RECORD INCLUDES THE
TESTIMONY AND EVIDENCE UPON WHICH THE APPEAL IS TO BE
BASED.
ALL REGISTERED PUBLIC SPEAKERS WILL BE LIMITED TO FIVE (5)
MINUTES UNLESS PERMISSION FOR ADDITIONAL TIME IS GRANTED BY
THE CHAIRWOMAN.
ASSISTED LISTENING DEVICES FOR THE HEARING IMPAIRED ARE
AVAILABLE IN THE COUNTY COMMISSIONERS' OFFICE.
1. INVOCATION
2. PLEDGE OF ALLEGIANCE
(~\..) :-7l'f' Q~'!I"-'- - Y (' f'f(~,~~'( f(r,
l'''- r. ',) ,
j. 1. i....J2>- 'J .~ {i~, '(-\.1....; \ ~c.'-
~(h"-vFUv'<. {~( 't,,'v, (c't4
Clam Bay/Clam Pass Estuary Preserve: ,~~.{)?
A Natural Resources Protection Area (NRPA) for wildlifl 0 F..... '2~
(CD
,j
,
?
I Essentia.~an~( Critical Habitats Need Protection ('Critical Habitats)
<I
Nearshore Hardbottom * Mangroves Wetlands* Seagrass Wetlands* Transitional Wetlands'
Undeveloped Barrier Beach* Sail Marsh Wetlands'" Shallow Tidal Creeks' Algae and Algal Beds'
Dunes Scrub Hammock Mudflats Freshwater Marsh
Diverse Species Use Clam Bay/Clam Pass NRPA Habitats to Survive/Thrive (I)
Smalltooth Sawfish-(potential) appropriate critical habitat
Sponges and Soil Corals observed-- Nearshore Hardbottom
Sea Turtles - nearshore and beach
Manatee- feed on seagrasses and mangrove roots
Bottlenose Dolphin- Gulf at the Pass and interior waterways
Gopher Tortoises - back dune and scrub hammock
Alligators -freshwater, brackish water
anoles, brown basilisk, cuban night, and other lizards
Indigo, mangrove, yellow ratsnake, red racer, and other snakes
Numerous Fishes all waterways to spawn, roam, forage, feed
Quahog, hard shell clams and other bivalves
Coon oysters attached to mangroves, other oysters form beds
algae attached to mangroves, and form algal beds
Phytoplankton includes Bioluminescent organisms
Otters- fresh and brackish water, marshes
Raccoons, Marsh Rabbit - transitional wetlands, marshes
Bobcat periodically seen over many years -vegetative cover
Frogs not otien seen, buL sound lills air nightly, wetlands. marsh
Fiddler crabs- wetlands--(countless population)
Mexican Freetail and other bat species roost and feed in NRPA
Florida Sotishell. Penn insula Cooter Turtles-freshwater marsh
Clam Bay/Clam Pass NRPA is Habitat to Many Species of Birds (includes listed species)
Principle Contributors: Mary Boland, Tom Cf{lv~ns, Tim Hall. and Judy Johansen 3/3/09
'American avocet- Recurvirostra alllericalla
'American kestrel-Falco sparverius
'American oystercalcher- H<lematopus palliatus
'Anhinga- Anhinya anhinga
'Bald Iiagle- Haliaeetus leucocephalus
'Barredowl- Strix varia
'llcltcdKingfisher- Megacerylealcyon
'Black Sknllmer- Rynchopsnigel
'Black Vulture- Rynchops niger
'Rjack-and~white Warbler- Mniotilta varia
'Black-bellied Plover- PllIvialis squatarola
'Black-crowned Night Heron- Nycticorax nycticorax
'Black-necked Stih-llinHlnlopusmexlcallus
'Blue Jay- Cyanocinacnstata
'Blue-gray gnalcatcher- Polloptilacm:rulea
'Boat-tailed Grackle~ Qlliscalus maJol
'Brown Pelican- Pclecanlls occidenlalis
'Brown Thrasher- Toxostollla rufulll
'Budgerigar- Melopsinacllsundulatus
'Caspian Tem- Hydroprogne caspia
'Callle Egret-Bublllcus ibis
'Chllck-will's-widow- Caprimulgus carolinensis
'CommonGrackle-Qulscalusqlliscula
'Common Ground-Dove- Columbina passerl11a
,Collllllon Moorhen- Gallinula chloropus
,COlllmon nighthawk- Chordeiles minor
.Coml11on snipe- Gallinago g<lllinago
'Col11mol1 Tem- Sterna hirulldo
'Coml11ol1 Yt:llowthroal- Geothlypis 1richas
'Double-crested Conllorallt- Phalaerocorax auritus
'Dowitchgear LUllg-billed- Lilllnodrolllus scolopaceus
'lJowitchgearShon-billed- LilllllOdrolllllS gnsells
'[)uwnyWoodpecker-Picoidespllbescens
'Dunlin-Calidrisalpina
Eas1ern Screech Owl- Megascops asio
Eurasian Collared lJove- Stn:plOpdla llecauclO
Europcan Starling- Stllrnus vulgaris
Fish Crow- Corvus ossifraglls
Forster'stem-Sternaforsleri
Glossy Ibis- Plegadisfakinellus
GrayCmblrd-lJullletellacarollllcllsls
Great Blue Heron- Al'de<J hewdlas
GremCresledFlycalcher-Mytarchuscrl11nus
Greal Lgret-Ardeaalba
Grcal Ilorned Owl- Bubo virglllianus
Greater Yellowlegs- Trillgil Illt:liu\oleuca
Green Heron- Butoridesvirescens
Green-willgedteal-Anascrecca
I h:ITingGIlII- Larusargentatlls
Hooded Merganser- LophodYles cucllll<llllS
HOllsesparrow- PasSCrdolllestlcllS
Kllldeer~Charadnus voclferus
Laugllll\g Gull- Lcucophacus atrtctlla
Least sandplpcr-Calidris Illll1utllla
Ijmpkln-Aramllsgllarauna
Lillie Blue Heron- Egrettacaerulea
Loggerhead Shrike- Lallills ludovicianus
Magnificcnt Frigate bird- Fregata magnificens
Mangrove Cuckoo- COCCYI.US 11l1ll0r
Merlin- Falco colul11banus
Mocking Bird- Milllus polyglollos
Mottled DlIck-Anllslltlvlglda
Mourning Dove- Zenaida Illacroura
Muscovy Duck- Cainna llloschata
Northern Cardinal- Cardinalis cardinal is
Northern Uannel- Monts baSSatlllS
Northern Parula- Parula amcricana
Northcrn Watcrthrllsh-SeillrUSllUvcboracensls
Usprey- PandlOIl halwetlls
Painted BUllting- Passerina ciris
l'aIIllWarbler-[)clldrolcapalmanllll
I'ere!:(rll\e FalcUIl-I'"lcu percgfllllls
Pied-billed grebe- Podilyl11blls podiceps
Pileated Woodpecker. Dryocopus pileatus
Piping Plover- Charadrius l11dodus
Prairie Warbler- Dcndroica discolor
Purple gallinule- Porphyrulll mllrtinicll Calidris
canutus
Red-bellied Woodpecker- Melllllerpes carolinus
Red-breasted mergllnser- Mergus serralor
Reddish l:::grct- l:::greua rufcsccns
Red-Shouldered Ilawk-lluteo lincatlls
Red-tailed Hawk- BU1eoJamaicensis
Red-wlllged blackbird- Agelaius phoenicells
Ring-billed GlIll- Larusdelawarensis
Rublll- TurdllS lIligratorills
Roseate Spoonbill- Platalca ajaJa
Royal Tern- S1erna maxima
Ruby-throated IlllJllmingblrd- Archilochus colllbris
Ruddy Turnstone- Arenaria interpres
Sanderling-Calidrisalba
Sandwich Tern- Sternasandvicensis
Selllipalmated Plover- Charadrills semipallllatus
Snowy Egret- Egrella 11Hlla
Spotted Sandplper-Ac1itlsmacularia
Swallow-tailed Klte- Elanoides forficatlls
T['i-colored Heroll- Fgrelta tricolor
Turkey Vullure-Cmhanesaura
Western Sandpiper-Calidrislllallri
WllItelbls-L:udocilllusalbus
Whitel'e1ican-IJelecanuserythrurhynchos
Willet- Ca1op1rophurus selllipalmatlls
Wood Stork- Scolopax minor
Yellow~bellied Sapsucker- Sphyrapiclls varills Yellow-
Cluwncd Night Ilcron- Nyctanassa vlolacea
Yelluw-rumped Warbler- Oendroica coronala
YcllOW-lhroatcd Warblcr-lJendrlllcadominica
(I) Compiled from Southwest r10rida Regional Planning Councilliles. Collier County Coastal Zone Management Plan-1991,
Collier County Natural Resource Dept.Technical Reports. Pelican Bay Services Div. -Turrell. Hall & Assoe.. Fl DEP websites
. II@ ij. p ,> Cl. '.~i_<.<:ire L t'" S L /r; ~ \(';UlYn C+iu
lOr 1t1 9'~~, 16\:I~jl,.,J OilJv'i'ic'("ltf/u~f
Algae eX [, I ~' f 9 o~ 14(!t' netl {'$'.
Acetabullaria spp. {'j rc Vel: ((HI 161..1
Caulerpa mexicana 5u{.u Ice; [) I J II J'J\.
Caulerpa sertularioides Do{. LID II i'f2f CL\(k'V~1.t
Gracilaria tikuahiae ...(or VCQI' di:.oi
Penicillus capitatus / c _
"--
Ulva lactuca '-
Ulva fasciata
Gracilaria tikvahiae
Hypnea spp.
Shoal grass
Turtle grass
Paddle grass
Florida Horse conch
Florida Fighting conch
Southern hard clam
Stiff pen shell
Black horn snail
Eastern oyster
Costate horn snail
Florida Cerithium
Lightning whelk
Tulip snail
Mangrove coffee snail
Florida Crown conch
Yellow cockle
Common worm snail
Moon snail
Tree snail
Sea slug
Horseshoe crab
Hermit crab
Fiddler crab
Blue crab
Mangrove crab
Stone crab
Seagrasses
Halodule beaudettei
Thalassia testudinum
Halophila decipiens
Invertebrates
Pleuroploca gigantea
Strombus alatus
Mercenaria campechiensis
Atrina rigida
Batillaria minimum
Crassostrea virginica
Ceritidea costata
Floridanum cerith
Busyson contrarium
Fasciolaria tulipa
Melampus coffeus
Melongena corona
Trachycardium murucatum
Vermicularia spirata
Polinices duplicatus
Liguus fasciatus
Aplysia brasiliana
Limucus polyphemus
Coenobita c1ypeatus
Uca pugnax
Callinectes sapidus
Ucides cordatus
Menippe mercenaria
Snook
Striped mullet
Black drum
Red drum (Red fish)
Sand seat rout
Spotted seatrout
Gulf flounder
Gag grouper
White grunt
American shad
Jack crevalle
Florida pompano
Spanish mackerel
Pinfish
Sheepshead
Bonnethead shark
Gray snapper
Lane snapper
Schoolmaster snapper
Ladyfish
Tarpon
Sand perch
Atlantic croaker
Silver perch
Goliath grouper
Bay anchovy
Silver jenny
Atlantic needlefish
Great barracuda
Leatherjacket
Gulf killifish
Pigfish
Spot
Whiting
Sailfin molly
Scaled sardine
Puffer
Fish
Centropomus undecimalis
MugU cephalus
Pogonias cromis
Sciaenops ocel/atus
Cynoscion arenarius
Cynoscion nebulosus
Paralichthys albigutta
Mycteroperca microlepis
Haemulon plumieri
Alosa sapidissima
Caranx hippos
Trachinotus carolinus
Scomberomorous maculatus
Lagodon rhomboides
Archosargus probatocephalus
Sphyrna tiburo
Lutjanus griseus
Lutjanus synagris
Lutjanus apodus
Elops saurus
Megalops atlanticus
Diplectrum formosum
Micropogonias undulatus
Bairdiel/a chrysoura
Epinephelus itajara
Anchoa mitchilli
Eucinostromus spp.
Strongylura marina
Sphyraena barracuda
Oligoplites saurus
Fundulus grandis
Orthopristus chrysoptera
Leiostomus xanthurus
Menticirrhus littoralis
Poecilia latipinna
Harengula pensacolae
Sphoeroides parvus
lOF ;1'
American avocet
American coot
American kestrel
American oystercatcher
Anhinga
Bald eagle
Barred owl
Belted kingfisher
Black skimmer
Black vulture
Black-and-white warbler
Black-bellied plover
Black-crowned night heron
Blue jay
Blue-gray gnatcatcher
Boat-tailed grackle
Brown pelican
Brown thrasher
Budgerigar
Caspian tern
Cattle egret
Common grackle
Common ground-dove
Common moorhen
Common nighthawk
Common snipe
Common tern
Common yellowthroat
Double-crested cormorant
Dowitchgear long-billed
Dowitchgear short-billed
Downy woodpecker
Dunlin
Eastern screech owl
Eurasian collared dove
European starling
Fish crow
Forster's tern
Glossy ibis
Birds
Recurvirostra americana
Fulica americana
Falco sparverius
Haematopus palliatus
Anhinga anhinga
Haliaeetus leucocephalus
Strix varia
IOF
;
Ceryle alcyon
Rynchops niger
Coragyps atratus
Mniotilta varia
Pluvialis squataro/a
Nycticorax nycticorax
Cyanocitta cristata
Polioptila caerulea
Quiscalus major
Pelecanus occidentalis
Toxostoma rufum
Melopsittacus undulatus
Sterna caspia
Bubulcus ibis
Quiscalus quiscula
Columbina passerina
Gallinula chloropus
Chordeiles minor
Gallinago gallinago
Sterna hirundo
Geothlypis trichas
Phalacrocorax auritus
Limnodromus sco/opaceus
Limnodromus griseus
Picoides pubescens
Calidris alpina
Otus asio
Streptopelia decaocto
Sturnus vulgaris
Corvus ossifragus
Sterna forsteri
Plegadis falcinellus
lOF Hf
Gray catbird Dumetella carolinensis
Great blue heron Ardea herodias
Great crested flycatcher Myiarchus crinitus
Great egret Ardea alba
Great horned owl Bubo virginianus
Greater yeliowlegs Tringa melanoleuca
Green heron Butorides virescens
Green-winged teal Anas crecca
Herring gull Larus argentatus
Hooded merganser Lophodytes cucullatus
House sparrow Passer domesticus
Killdeer Charadrius vociferus
Laughing gull Larus atriciIJa
Least sandpiper Calidris minutiIJa
Limpkin Aramus guarauna
Little blue heron Egretta caerulea
Loggerhead shrike Lanius ludovicianus
Magnificent frigate bird Fregata magnificens
Mangrove cuckoo Coccyzus minor
Merlin Falco columbarius
Mocking bird Mimus polyglottos
Mottled duck Anas fulvigula
Mourning dove Zenaida macroura
Muscovy duck Cairina moschata
Northern cardinal Cardinalis cardinalis
Northern gannet Morus bassanus
Northern parula Parula americana
Northern waterthrush Seiurus noveboracensis
Osprey Pandion haliaetus
Painted bunting Passerina ciris
Palm warbler Dendroica palmarum
Peregrine falcon Falco peregrinus
Pied-billed grebe Podilymbus podiceps
Pilleated woodpecker Dryocopus pileatus
Piping plover Charadrius me/odus
Prairie warbler Dendroica discolor
Purple gallinule Porphyrula martinica
Red knot Calidris canutus
Red-bellied woodpecker Melanerpes carolinus
Red-breasted merganser
Reddish egret
Red-shouldered hawk
Red-tailed hawk
Red-winged blackbird
Ring-billed gull
Robin
Roseate spoonbill
Royal tern
Ruby-throated
hummingbird
Ruddy turnstone
Sanderling
Sandwich tern
Semipalmated plover
Snowy egret
Spotted sandpiper
Swallow-tailed kite
Tri-colored heron
Turkey vulture
Western sandpiper
White ibis
White pelican
Willet
Wood stork
Yellow-bellied sapsucker
Yellow-crowned night
heron
Yellow-rumped warbler
Yellow-throated warbler
Amercian alligator
Gopher tortoise
Brown anole
Softshell turtle
Chicken turtle
Red-eared slider turtle
Mud turtle
Mangrove snake
Ringneck snake
Mergus serra tor
Egretta rufescens
Buteo lineatus
Buteo jamaicensis
Agelaius phoeniceus
Larus delawarensis
Turdus migratorius
Ajaia ajaja
Sterna maxima
Archilochus colubris
Arenaria interpres
Calidris alba
Sterna sandvicensis
Charadrius semipalmatus
Egretta thula
Actitis macularia
Elanoides forficatus
Egretta tricolor
Cathartes aura
Calidris mauri
Eudocimus albus
Pelecanus erythrorhynchos
Catoptrophorus semipalmatus
Mycteria americana
Sphyrapicus varius
Nyctanassa violacea
Dendroica coronata
Dendroica dominica
Reptiles
Alligator mississippiensis
Gopherus polyphemus
Anolis sagrei sagrei
Apa/one mutica
Deirochelys reticula ria
Trachemys scripta elegans
Kinosternon subrubrum
Boiga dendraphilla
Diadophis punctatus
lor
1
j
Garter snake
Black Racer
Yellow rat
Florida Manatee
Bottlenose Dolphin
Raccoon
Marsh rabbit
River otter
Virginia opossum
Nine-banded armadillo
Brazilian Freetail Bat
Thamnophis sirtalis
Coluber constrictor
Elaphe obsoleta quadrivittata
Mammals
Trichechus manatus latirostris
Tursiops truncatus
Procyon lotor
Sylvilagus palustris
Lutra canadensis
Didelphis virginiana
Dasypus novemcinctus
Tadarida brasiliensis
lOFf
~
,-
I
I
I
I
I
I
I
ita
,
Q
.
.
.
.
...
,
.
COMMON NlV,E
REP'rILES
Crocodilians
*12 American alligator
Turtles
13 snapping turtle
14 Florida box turtle
15 Peninsula cooter
16 Gopher tortoise
17 Atlantic loggerhead
18 Florida softshell
Lizards
*19 Green anole
2Q Florida scrub
lizard
21 Southeastern five-
lined skink
22 Eastern glass
lizard
Snakes
10 F ~f'
~.f c.( d /..., S (-. .{:l(,wn,
{(Jlff...( LiDu.n;!J [)~f!-nUli/
Ot- IUcdlicf'a.{ /2(SM./lI2..U;
\'
UoJ let. ( 2M\.e.- fHM!w.rJ$l'iI-
PI (,;;41. - /99';;:/ 1Ifpvi& l,X
, ~HEQUENCY
& HABITAT
ZONE
Table C (ConL'd)
SCIENTIFIC NAME
Alligator mississipiensis
U-1-3
Chelydraserpentina
Terrapen'e 'carolina baueri
pseudemys floridana peninsularis
Gopherus polyphemus
Caretta caretta
Trionyx ferox
U-l
U-1-2
U-l
U-1-4
U-4
U-l
Molis carolinensis
C-3
Sceloporus woodi
U-l
Eumeces inexpectatus
Ophisaurus ventralis
1-2-4
2
.'
**23 Florida green water
snake Natrix cyclopion floridana u-1-3
*24 Mangrove water
snake Natrix sipedon compressicauda C-3
25 Southern black
racer Coluber constrictor C-1-2
26 Everglades racer Coluber constn.ctor paludicila U-1-2
27 Eastern indigo
snake Orymarchon corias couperi U-1-2
28 Eastern coral snake Micrurus fulvius 1-2
*29 Eastern cottonmouth Agkistrodon piscivorous U-1-3
*30 Eastern diamondback Crotalus adamanteus U-1-2-4
Toads and Frogs
31 Eastern spade foot
32 Greenhouse frog
Scaphiophus holbrooki
Eleutherodactylus ricordi
planirostris
C-1-2
2
*Fill Area Species - Definite
""Fill Area Species - possible
IV - 19 -
lor
APPENDIX IS
Species List of Vc."1't","briltc5 Reprc~;(.'Jltcd in the
Clam Pd5S Systpm (from Cor~l Ridge-collier
Properties, 1979).
WILDLIFE
---
A list of Lhe observed ~nimJl species that inhabit or fre-
quent Lhe area is included in Table C. Figures 2 and 3
provide wildlife distribution by zones of the entire pro-
perty.
The following keys apply to the various animal species
which inhabit or frequent that area as shown in Table C:
C = COMMON
U = UNCOM..'10N
M = MIGRANT
R = RESIDENT
T = TRANSIENT
* = FILL AREA SPECIES DEFINITE
** = FILL AREA SPECIES POSSIBLE
To.l1le C
ANIMAL SPECIES WHICH INHABIT OR FREQUENT THE AREA
(See text for explanation of symbols)
COMMON NAME
MAMMALS
*1 OpOSSW!l
2 Eastern mole
3 Marsh rabbit
4 Eastern cottontail
5 Gray squirrels
6 Cotton mouse
7 Hispid cotton rat
*8 Raccoon
9 Bobcat
10 lihite-tail deer
11 Nine-banded
armadillo
SCIENTIFIC NAME
FREQUENCY
& HABITAT
ZONE
Didelphis-virginiana Kerr
Scalopus aquaticus
Sylvilaqus palustris
Sylvilagus floridanus
Sciurus carolinensis
pero~scus gossypinus
Si9m on hisp1dus
Procyon lotor
~nx rufus
Odocoileus virginianus
C-1-2-3
C-2
C-2-3
U-l
U-1-3
1-2
1-2-4
C-1-2-3-4
U-1-2
U-1-2
Dasypus novemcinctus
U-1-2
'Fill Area Species - Definite
"Fill Area Species - Possible
~..
IV - 18 -
,
I
I
I
I
I
I
I
I
I
I
I
I
I
Table C CCont'd)
COMMON NAME
SCIENTIFIC NAME
)) Southern toad
34 Florida cricket
frog
*35 Green tree frog
)6 Squirrel tree frog
)7 Florida chorus frog
38 Southern leopard
frog
Bufo terrestris
Acris 1ryllus dorsalis
Hyla Clnerea
Hyla squirella
Pseudacris clarki
Rana pipienssphenocephala
BIRDS
39 pied-billed greebe
*40 Brown pelican
41 Double-crested
cormorant
42 Anhinga
43 Shoveler
44 Blue-winged teal
45 Lesser scaup
46 Ruddy duck:
47 Red-breasted
merganser
48 Cooper's hawk
49 Sharp-skinned hawk
50 Marsh hawk
51 Red-tailed hawk
52 Red-shouldered hawk
*53 Osprey
54 Pigeon hawk
55 Sparrow hawk
56 Bobwhite
*57 Common egret
**58 Snowy egret
59 Cattle egret
60 Great blue heron
**61 Reddish egret
*62 Louisiana heron
*63 Little blue heron
*64 Green heron
**65 Black-crowned
night heron
Podiceps pOdiceps
Pelecanus occidental is
Phalacrocorax auri.tus
Anhinra anhinga
Spatu a clypeata
Anas discors
Aythya affinis
Oxyura jamaicensis
Xer1us serrator .
Acclpiter coo~erl
Acciplter strlatus
Circus cyaneus
Buteo ~amaicensis
Buteo lneatus
Pandion hiliaetus
Falco cOlumbarius
Falco sparverius
Colinus virginianus
Casmerodlus Albus
Leucophoyx thula
Bubulcus ibis
Ardea herodias
Dichromanassa rufescens
Hydranassa tricolor
Florlda caerulea
Butorides virescens
Nycticorax nycticorax
*Fill Area Species - Definite
**Fill Area Species - Possible
IV - 20 -
10F
"
FREQUENCY
~ HABITAT
ZONE
C-2
U-2
C-2-3
C-3-4
C-2
C-2-3
2 (101) 1-)
'37CR-T)3
13 (R-T) 3
3(R-T))
2(101) 3
11 (101) 2-)
70(101) 3
1 (101) 3
13 (101-) 3
(M) 1-2-3
(M) 1-2-3
(101) 2
2(R-T)2
5(R) 2
2(R) 3
lCM) 4
3 (101) 1-2
38(R) 1-2
55(R-T)2-)
136 (R-T))
2(R-T)1
3 (R-T) 3
l(R-T))
108(R-T)2-)
84(R-T))
7CR) )
4CR-T))
COMMON N/\ME
66
67
*68
69
70
71
72
73
74
~
75
*76
77
78
79
80
*81
82
83
84
85
86
87
88
89
90
91
**92
93
*100
American bittern
Nood ibis
White ibis
Roseate spoonbill
Virginia rail
Clapper rail
King rail
Black-necked stilt
Black-bellied
plover
Semipalmated plover
Ki lldeer
Whimbrel
Solitary sandpiper
Dunlin
Sanderling
Least sandpiper
semipalmated
sandpiper
Common snipe
Herring gull
Ring-billed gull
Laughing gull
Royal tern
Caspian tern
Black skimmer
Mourning dove
Ground dove
Mangrove cuckoo
Yellow-billed
cuckoo
Barred owl
Chuck-will's widow.
Common nighthawk
Ruby-throated
hummingbird
Belted kingfisher
Yellow-shafted
flicker
Pileated woodpecker
94
95
96
97
98
99
Table C (Cont'd)
SCIENTIFIC N/\ME
Botaurus lentiginosus
Mycteria americana
Eudocimus albus
Ajaia ajaja
Rallus limicola
Rallus longirostris
Rallus eleqans
Himantopus mexicanus
Squatarola squatarola
Charadrius semipalmatus
eharadrius vociferus
Numenius phaeo~us
Tringa solitar1a
ErolIa alpina
Crocethia alba
Erolia minutilla
Ereunetes pusillus
Capella gallinago
Larus argentatus
'Larus 'delawarensis
Larus atricilla
Thalasseus maximus
Hydroprogne caspia
Rynchops nigra
Zenaidura macroura
Columb1gallina passerina
Coccyzus minor
Coccyzus americanus
Strix varia
Caprimulgus carolinensis
Chordeiles minor
Archilochus colubris
Megaceryle alcyon
Colaptes auratus
DryocopUS pileatus
*Fill Area Species - Definite
'*Fill Area Species - possible
IV - 21 -
lor
,
I'REQUENCY
& HJ\DITJ\T
ZONE
I(M) 3
3(R-T)2
232(R-T)3
10(R-T)3
(M) 2-3
(M) 2
2-3
5
(M)
(R-T)
(R-:T)
(R':"T)
(R-T)
(R-T)
(R-T)
(R-N;M)
(R)
(R)
(R)
(R-T)
COMMON NAME
101 Red-bellied
woodpecker
102 Yellow-bellied
sapsucker
103 Downy woodpecker
104 Eastern kingbird
105 Gray kingbird
106 Barn swallow
107 Tree swallow
108 Blue jay
*109 Common crow
110 Carolina wren
111 Mockingbird
112 Catbird
113 Robin
114 Loggerhead shrike
115 Black-and-white
warbler
*116 Yellow warbler
*117 Black-throated
blue warbler
*118 Palm warbler
119 Ovenbird
120 Yellowthroat
*121 American redstart
122 Meadowlark
*123 Red-winged
blackbird
124 Boat-tailed grackle
125 Cardinal
126 Painted bunting
127 American goldfinch
128 Rufous-sided towhee
129 Savannah sparrow
"130 Southern bald
eagle
lor '
Table C (Cont'd)
SCIENTIFIC NAME
FHEQUENCY
& HABITAT
ZONE
Centurus carolinus
Sphyrapicus varius
Dendrocopos pubescens
Tyrannus tyrannus
~rannus dominicensis
J.rundo rustica
Iridoprocne bicolor
Cyanocitta cristata
Corvus braChirhynChOS
Thryothorus udovicianus
Mimus rrlyglottos
Dumatel a carolinensis
Turdus migratorius
Larius ludovicianus
(M)
(M)
(R)
(R)
(R)
(M)
(M)
(R)
(M)
(M)
(M)
(M).:
(M)'
(M)
(M)
(R)
(R)
(R)
(R)
(M)
(M)
(R)
(R)
(T)
Mniotilta varia
Dendroica petechia
Dendroica caerulescens
Dendroica palmarum
Seiurus aurocapillus
Geothlypis trichas
SetoPhaya ruticilla
Sturnel a magna
Agelaius phoeniceus
Cassidex mexicanus
Richmondena cardinalis
passerina ciris
S~inus tristis
P1p1io erythroptha1mus
Passerculus sandwichensis
Haliaetus leucephalus
*Fill Area Species - Definite
'*Fill Area Species -.possible
........
IV - 22 -
lOF
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10 F i~4
Clam Bay Restoration and Managetrent
Biological Monitoring
TurreD, Hall & Associates, Inc.: Eighth Annual Report
Lewis Environmental Services, Inc.: Report #10
Decemer 2007
Shoal grass (Halodule wrightii)
<
Southern hard Clam (Mercenaria campechiensis)
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This site has been updated to reflect the most current
Tidal Epoch. However, there are still
some areas that have the old epoch (1960~78) that
wlll be updated over time as new data becomes
available.
Read More About This Change
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new epoch
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Results
lOF
Figure 3.2 - Presence (green) and absence (red) of seagrass from visited sample
sites in Clam Bay.
'n:"~IIIlf~~Ml
~ i<le I'Ml
1111111
Of the 30 seagrass sampling sites visited, seagrass was found in \3 of them, for a rate of
occurrence of 43 percent. While it would be tempting to convert this to an acreage estimate, by
assuming that if 43 percent of randomly chosen stations were occupied by seagrass, then 43
percent of the 60 + acres of Clam Bay is covered with seagrass (Le., 26 acres of seagrass) this
would be an incorrect approach to the issue of seagrass coverage estimates. Techniques such as
random point visitations and transect-based assessments are not appropriate for translation into
acreage estimates.
At the station close to the Gulf of Mexico (Station 2), within the westernmost portion of Clam
Pass, a sprig of turtle grass, Thalassia testudinwn, was encountered. This lone plant may have
P8SJ
17
Clam Bay Seagrass Assessment
DRAFT October 2007
(V
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Damage Costs in
Seagrass Habitats
l,or~
,
.:. 0:oun~ing and p~ dredging in seagras~~?bitat has consequences to
both habitat and personal property;----------~- .... '.'.-
.:. Damage to vessel engines, hulls, and propellers often occur when a vessel grounds in
seagrass or shallow bottom habitat.
.:. Gouging of seagrass habitat by propellers damages the blades and underground roots
of the plant.- . - ----.-
.:. :5eaqrasses require anywhere from 2 to 10 years to recover from propeller damage
depending on the species of seagrass. m..__._ -
.:. Towing fees charged by companies who assist grounded vessels cost approximately
$125/hr. dock to dock during the day, and $150/hr. dock to dock at night. The fee
for refloating a grounded vessel is $5-1O/foot of vessel.
.:. Groundings resulting in damage to seagrass habitats are offenses subject to both
federal and state fines and penalties including civil penalties, and costs of
assessment of damage, restoration of habitat, and long-term monitoring of restored
habitat.
SEAGRASS . . . ITS ALIVE!
Qlf)
lor 1
FDEP Permit No.: HI28463-00l-.IC
(Previously 113(49919)
Page 9 of 21
sign should he at least 8 112" by II" whidl rcads Cawioll: Mall(J/ec flahitfll, Idle
s[leed is required i(o/'erating a Fessel in the co/wrucrion area. AI/ eqllip//ltllt //IIISt
he shllrdOll'n ira //IwlI/tee CO//les Ii'irhill 50,f<'et I(f opn-atioll. An\' col/ision Il'ith
(/Iull()r injury /() a //Iallaree shall he reported i//l//lcdiateIY 10 rhe Florida Marine
PaJrollll/-800-DIAL F.~lP (f.800-342-5367). The US. Fish and \Vildlit'e Service
shollld a/so he cOl/tacted il/ Jacksol/\'il/e ( /-'104- 231-1580) JiJl' I/orth Florida or il/
Vao Beach (/-407-501-3'J{)'J)for sowh Florida.
h) Pcrmanent manatee infollllational signs. such as thosc shown in thc cndosed example
sheet,. shall be installed and maintained atthc canoe hDat ramp at the sDuulern cnd of Outer
Clam Bay j{)lIowing completion of the initial dredglllg event.
4, Pursuant to the Florida Deparmlent of State. Division of Historical Resources (DOS-DHR)
regulations. no heavy equipment, land clearing. or ground disturbing activitics shall be allowed at
sitcs 8CR47(i. 8CR547. and 8CR576, unless subjectcd to prior testing hy a qualilled
archaeologist and approved by the DOS-DHR, See the attached permit drawings for the
locations of these historically significant areas to be a\'oided.
5. The Clam Bay ecosystem contains waterways that arc dift'icuilto navigate due to shallow
water depths and meandering channels lined \,:;iliprotruding mangrove branches and roots. To
protect the signitlcantnaLUral re~ources and water quality of the Clam Bay ecosystem, ,md to
provide protection to the public safety (boaters utilizing these waters), there shall be an idle
speed! no wake restriction on motorized vessels used in thc"system (as stipulated in County
Ordinance No. 9(i.1 (i). The existing restrictions phlced upon boating activities within lhe Clam
Bay system by County Ordinance No. 96-16 Shall remain aetive and enforceable for the life. of
this pemlit. Additionally, two Florida Marine Patrol approved signs that state, "Idle Speed- No
Wake" and' "Caution- Shallow Water and Natural Resources Present- Tilt M t r U To P 'ellt
Pro ~a 'e- Dama~e to ftat~rall<esources u cellO mes. Purs ant 10 . 370. F.S.." ~~1ll1 be
at t e followlIlg locatlOnsollowmg completion of the initial re ging event: .
I) One within the entrance of Clam Pass facing boaters entering the bays;
2) One at the entrance to Outer Clam Bay facing nonh and easily legible to boaters
entering Outer Clam Bay;
3) One at the entrance to Inner Clam Bay facing south and easily legible to boaters
entering Inner Clam Bay:
4) One at the entrance to Upper Clam Bay facing south and e'l~i1y legible to boaters
entering Upper Clam Bay: and.
5) One within the upper reaches of Outer Clam Bay facing southeast and easily legible to
boaters leaving Seagate.
6. To protect the submerged natural resources (seagrasses and oyster beds) adjacent to the
channels to be dredged, weighted turbidity screens that extend to the bottom of the waterbody
00
lOF
4
Dam Bay Restoration and ManageIrent
Biological Monitoring
TurreD, Hall & Associates, Inc.: Eighth Annual Report
Lewis Environmental ServIces, Inc.: Report #10
DecenDer 2007
76
mangrove degradation. Due to continued observations of diffuse but widespread stressed
conditions in the forest areas eastward of Inner Clam Bay, within the next several years
additional work may well be necessary to prevent further losses.
7.2 Seagrasses
Shoal grass patches are still present at viable and ecologically significant densities within
the channel north of the County boardwalk and the bay just inside the mouth of the Pass.
Increased densities were also seen in Outer Clam Bay and seagrass coverage is higher
than in years past. The gradual decline since the 1999 dredging does not appear to have
,continued this year~ the grass beds have expanded in both llllIllb~~~~d..~nsity. Turtle
grass (Thallassia testudinuinTWas observed back m the systerii'ilifs'yeai'inttrree distinct
locations though this may be the result of the increased survey effort. Two of the
locations were not on or near the pennit transects.
The additional survey efforts by 'fUITtl1hHall and Associates as well as the PBS & J
effort ~~in~cated that s~jirassco.ve.l'll~~itl1in the. Bay may be more widesrr..eadillai1
previouslftllo~t though the coverage appears to be ephemeral in nature. Consideration
is being given to modifying or expanding future survey efforts over and above what is
required by the pennits to further investigate seagrass presence and trends within the
Clam Bay System.
CL~)
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(..2C>page I on
KeyesPamela
lOF
,/
Alford, Tara [tara,alford@MyFWC.com]
Tuesday. June 03. 2008 2:48 PM
Margot Osborne; SoreySan@aol.com; mrlc@mac.com
KeyesPamela; Ouellette, Paul; McAlpinGary; mbauer@naplesgov.com;
bmoss@naplesgov,com; mayor@naplesgov.com; joseph.b,embres@uscg,mil; Keyser, Carol;
Lainie,Edwards@dep.state.fJ,us; Lucy,Blair@dep.state.fJ,us; fiala_d; HalasFrank; CoyleFred;
ColettaJim; henning_t; ochsJ; ramsey-m
Subject: RE: Proposed markers in Clam Pass/Clam Bay
Expires: Sunday, November 30,2008 12:00 AM
Attachments: 68D23-110 - Inspection and Certification. doc
From:
Sent:
To:
Cc:
Dear Collier County/Clam Pass/Clam Bay Stakeholders:
Thank you for your interest in this issue. I have received several
emails and phone calls from you regarding this issue. While we
appreciate your concern and interested in this issue, this office is not
the primary permitting agency for private aids to navigation markers
(PATN's).
Collier County has applied for a permit to place
regulatory/informational markers in Clam Pass, Outer Clam Bay and
Pelican Bay Boardwalk. There is no mention of any red/green
markers, which are typically referred to as private aids to navigation in
the application and/or associated materials.
In March of 2000, Collier Co., via a consultant requested and obtained
a permit for placement of thirty-two (32) canoe trail markers. These
markers are strictly informational and in no way 'direct or regulate
vessel traffic'. It should also be noted that Collier Co., nor its
consultant at the time, have ever provided the required updates for
these signage as outlined in 680-23.110 FAC. In fairness to Collier
Co., this portion of the existing rule 680-23 was not enacted until
December 2001 and amended again in October 2006, with copies of
the entire rule being provided.
During my preliminary review of their latest application for markers in
Clam Bay/Pass, etc., it appears the county is desiring to place
informational (seagrass, shallow, etc.,) markers along with regulatory
(idle speed no wake) markers. It should be noted that so long as the
6/12/2008
(J]) I'age 2 ot 3
lOF
county has provided the required criteria for placement of markers,
'which at this time it appears they have, we will issue a permit based
upon authorization from the United States Coast Guard, the Florida
Department of Environmental Protection, the US Army Corps of
Engineers and any local agencies.
If you have concerns with the direction of this project, I urge you to
contact the county, specifically the coastal zone management office. I
have copied that office with this email and would ask that they provide
each of you with an electronic version of the application sent me. My
point of contact with that office is Ms. Pamela Keyes, and her email
address is Qamelak~es@_colliergov._net
Thank you again for your interest in this issue.
Tara
Tara Alford, Management Analyst
Boating and Waterways Section
Florida Fish & Wildlife Conservation Commission
Division of Law Enforcement
620 South Meridian Street
Tallahassee, Florida 32399-1600
Patrol, Protect, Preserve
850-410-0656, ext. 17169
850-251-7220 - Cell
195*105*2598 - Nextel DC
850-488-9284 - Fax
tara.alfordlOlmyfwc.com
BQ8JI8G'.~~
0Ild ~1W6';:t ," -.-
From: Margot Osborne [mailto:mcosborne@mac.com]
Sent: Monday, June 02, 2008 9:25 PM
To: joseph.b.embres@uscg.mil; Alford, Tara; Keyser, Carol; Lainie.Edwards@dep.state.f1.us;
Lucy.Blair@dep.state.f1.us; DonnaFiala@colliergov. Net; frankhalas@colliergov.net; Fredcoyle@Colliergov. Net;
JimColetta@colliergov. Net; TomHenning@colliergov. Net; LeoOchs@colllergov.net; marlaramsey@colllergov.net;
GaryMcAJpin@colliergov.net; mbauer@naplesgov.com; bmoss@naplesgov.com; SoreySan@aol.com;
mayor@naplesgov.com
6/12/2008
Clam Pass: The Entry to a Rare Natural Resource
The Critical Need by Government to Protect and Preserve the NRPA
(?- :L )
10F
The Clam Bay Water System is composed of Outer Clam Bay, Inner Clam Bay, Upper Clam Bay and
Clam Pass. These very shallow, meandering waters are home to hundreds of species of birds, fish,
marine and other animals, grasses and a rare mangrove forest. This 580-acre conservation area
was the first Natural Resource Protection Area and is still the only coastal NRPA in Collier County,
HISTORIC AND MANDATED USE OF CLAM PASS
Primary Uses: This undeveloped Coastal Resource Barrier, that protects interior areas from
severe weather and storm surges, is an environmental protection area: a wetlands habitat, an
essential fish nursery, a mangrove forest, a safe abode for marine animals, birds, and other wildlife.
Secondary Uses: Public recreation-swimming, snorkeling, wading, kayaking, canoeing, playing.
NON-NAVIGABLE WATERWAYS
US Coast Guard maps designate Clam Pass as NON-navigable. Seagate motor boaters use it at high
tide, endangering grasses and people in the water; and risk their boats grounding on shifting shoals.
Kayakers and canoeists use it at any hour with confidence of safety in its calm, shallow waters.
DREDGING PRACTICES IN THE CLAM PASS
Dredging has NEVER been done to carve a channel or assist the passage of powerboats.
Limited dredging has been done solely for the biological health of the mangrove forest. Any sand
harvested is a by. product of such dredging and is of questionable value for beach replenishment.
THE ROLE OF THE EBB SHOAL DELTA
The ebb shoal delta is a buffer that protects the beaches from wave energy. It stabilizes the pass
and adjacent beaches and allows a natural cycle of erosion and accumulation of sand.
It provides an important resting place for birds, a critical contribution to their well-being.
THE QUALITY OF THE NRPA AND THE DANGER IN DREDGING OR ALTERING ITS NATURE
The NRPA is composed of a mangrove forest, shallow waterways, and a mudflat teeming with
microorganisms and invertebrates that support juvenile fish, millions of marine creatures, birds
and animals. A recent, flawed study attempted to condemn it as 'impaired' because its sediment is
rich, dense, full of chlorophyll and low in oxygen. That, in brief, is the definition of a swamp. This
one has an impressive biodiversity, is a wildly successful 'nursery: and is a flourishing, rare forest.
Harvesting sand from the pass or delta for beach replenishment is a costly practice. It grossly
interrupts the natural cycle and transport of sand along the coast. Dredging provokes massive
erosion in order to fill in the harvest site, and it destroys submerged vegetation and marine life.
Expanded dredging of Clam Pass would significantly alter its primary and secondary uses and
endanger wetlands, mangroves, sea grasses and oyster beds. The risk of such unmerited action to
animal and bird life, to the public, to the State, to tourism is unimaginable and incalculable.
The Mangrove Action Group of Pelican Bay
December 9,2009
C?~)
Clam Bay/Clam Pass Estuary Preserve:
County Projects-Threats to Habitats and Species
· Construction of Powerboat Channel in NRPA Preserve
NRPA's function to protect wetlands other habitats.endangered and threatened wildlife.
Existing shallow condition is critical habitat for many different species, including listed species.
Natural resources (shoals, mudflats, mangrove roots/branches) are often hazards to navigation.
Clam Bay's shallow condition is non-navigable except at high tide or heavy rain.
Motorboats cause damage to Clam Bay resources by propeller dredge scarring, boat wake,
turbidity, contaminants, and stirring up flocculants that envelope seagrasses and mangrove roots.
Clam Bay has always been maintained for natural resources and never maintained for navigation.
Marked channel denotes a safe passage that doesn't exist in Clam Bay unless waterways are
dredged and mangrove roots & branches cut out.
The proposed navigation channel will cut right over areas of seagrasses.
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· Water Quality, Hydrology, Mixing & Modeling Project
Clam Bay water Quality is good> ten year studies show better than median of Florida estuaries.
The proposed study is meant to confuse the Moorings Bay estuary with the Clam Bay estuary,.
These are two adjacent, yet very different systems with very different management models.
The Clam Bay Estuary's lush vegetation and wildlife habitat is heavily buffered from upland
Pelican Bay development via green space, detention ponds and a perimeter spreader swale berm.
Moorings Bay Estuary is completely altered so as to be artificial with hardscaped seawalls.
There are at least 74 pipes in the seawalls that dump untreated stormwater into Moorings Bay
Moorings Bay seawalls, poor circulation and untreated stormwater are NOT in Clam Bay.
Moorings Bay problems have been known at least twenty years; thoroughly evaluated in 1981 by
FDEP predecessor, DNR. Many alternatives were considered for Moorings Bay; some were
recommended; others rejected.
Opening up Clam Bay at Seagate Drive culverts was rejected--this could devastate the sensitive
ecology of mangroves, seagrass meadows, benthic biota, marine, avian and other wildlife.
-Summary
The Clam Bay/Clam Pass Natural Resource Protection Area contains habitats that are important
to Local, Regional, State and National interests. It needs permanent protections, NOT alteration.
(I) Compiled from Southwest Florida Regional Planning Council liles, Collier County Coastal Zone Management Plan-1991,
Collier County Natural Resource Department Technical Reports, Pelican Bay Service Division Reports, Fl DEP websites
I""NDIX ,
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(d tf)
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FDER DIagnostIc FcaSl 1 Ity Slu y or MOOrIngs
Day, Collier County, Florida, 1981 (from FIlI:n,
1981) .
DIAGNOSTlC/FEASIBIUTY STUDy
FOR
MOORUlCS BAY
COLLIER COUNTY, FLORIDA
January 1981
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Prepared by the
Water Resources Restoration and Preservation Section
Department of Environmental Regulation
Tallahassee, Florida
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SECTION V
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RECOffrlENDATfONS
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A, Recommended Alter~tives
ReeoQllDended alternatives for improving water quality ill Moorings
Bay can be divided into two major categories: (1) measures to decrease
the pollutsnt load entering the bay through voluntary citizen action or
regulation, aDd (2) measures to improve the circulation and flushing of
the bay. Three alternatives are recommended under each category as
follows:
1. Measures to Decrease the Pollutant Load
a. Conduct public awareness campaigns about the sources
of pollution.
A campaign should be initiated to ioform the public about sources
of excess nutrients and other pollutant substances which enter the bay.
It seems evident that lawn aDd garden debris represent one type of
pollutant. A voluntary cOQllDittment by the citizens should be encouraged
to eliminate as many pollutants as possible which may enter the bay.
Residents should be urged to use this biodegradable debris as mulch or
compost in place of fertilizers or to place the debris in sealed (prefer-
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ably reusable) containers to be collected. This action will pre.e~t the
debris from washing into the bay.
Pesticides and fertilizers are other common pollutants. Residents
~hould be encouraged to use native p)~nts ...hen landscaping. Native
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plants are generally'resistant to insect pests and disease and are
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adapted to the amount of ~utrients and \Jater which is characteristic of
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the area. Therefore, the addition of pesticides and fertilizeLs and
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excessive vacering should not be necessary.
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Rceldente ehould aleo be warncd about tho Ilaz.cd" of dumping paints,
oil, gaeohno Bnd .imilar eubstanccs dircctly Into the bay, or on the
street and In stoem drain. where the sub.tances enter the bay indirectly.
RaW sewage entering the bay via reercaLional boats is another aubstanee."
which will degrade the bay. Boating enthusiasts should be urged to
prevent raW sewage from entering the bay from their boatB.
There are numerouB ways to increaae the public's awareness of theae
problems, lnformative pamphlets could be printed at a no~nal coat and
distributed with utility bille, or by other means, by the city or the
county. Public service announcements in local newspapers and on local
radio and T.V. stations should also be of little cost. Technical
assistance from the state would be available, if needed, for the develop-
ment of pamphlets and public aervice aonouncem~ts. Heosages could be
displayed on biLlboards, buses and similar outlets for advertising. A
"hot line" could be established to encourage public involvement. The
"hot line" could be used by citizena who wished to report incidents
which might adversely affect the water quality. The line could also be
used for residents seek1ng guidance a. to how they might help prevent
further pollution. The public awareness approach is the least costly
and potentially the most effective of all proposed alternatives.
b. Decrease exce.s nutrients and other pollutants.
Informing the residents abour the need to prevent pesticides,
ferrilizers, yard debris, sewage and similar substances from entering
the bay and relying on voluntary committments t~ this end may be suf-
ficient. However, local governments have the regulatory authority to
control these types of pollution. Enforcement of actions to prevent
these type. of pollution is generally most efficiently handled at the
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lO(:lJl level. ^ UlOt-llo1-1um could be placed on the npp11c.nlion of nIl
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fcrti111.('rs and pcsticjdcs prior to 1lcavy flltllS. An orJjn.nncc rcquir1ne
that nll yard debris not used for compost or mulch be pl.3ced 1n t;C~11cd
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containers and left by the road for collection could be developed and
adopted. Those residents needing collection service could be required
to purchase sturdy bins, or the bins could be furnished by the city or
county.
c. Decrease the amount of stormwater entering the bay.
The first tvo recommendations do not address the complex problem of
dealing vith stormwater. Residents can be informed about the excess
nutrients and pollutants carried into the bay via stormwater and they
can be encouraged or required to prevent certain of these substances
from being transported via stormwater. But the residents have little
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control over the large quantity of stormwater vhich is channeled into
the bay. This problem must be addressed at a higher level.
The city and county are encouraged to vork vith tbe Soutlwest
Florida Regional Planning Council on the stormwater issue. The council
is in the process of compiling a plan for dealing vith sto~ater problems
on a regional has is. Interest and input from the local level could be
very effective in mitigatiog the alllOunt of pollutants vhich enter the
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hay vith the stormwater.
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The reason that stormwater has become such a problem in this area
is that prior to 1959 the majority of the surrounding shore stored the
rainwater. The rainwater ~aG then slowly released and was filtered
through the ground and the mangroves before entering the bay. Now this
area features vsst expanses of impervious streets, parking lote end
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otructurC'B. Ra.1nl.lotcr which \Jas previously clcanGcd nod slovly relefised
to the bay. now piclca up additionAL pollutant. from lawn., .treets and
psrking lots snd enters the bay in pulses.
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Because the area surrounding Moorings Bay is extremely developed
there will probably be little chance of constructing detention or reten-
tion ponds for partial treatment of the stonawater if treatment is deemed
neceasary. An alternative that may be of benefit is the use of suitable
pervious materials to construct new streets aod parking lots Bnd to
repair existing facilities. Costs for purchasing and placing pervious
materiala is not expected to be significantly greater than costs for
constructing etreets and parking lots with standard impervious materials,
but a significant improvement in water quality could occur. More informa-
tion is needed to determine the precise benefits and costs of this
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alternative.
Erosion should not ,be a significant problem in this area because of
the established residences. Construction sites generally present a
problem, though, and foremen should be required to take the necessary
precautions (e.g., placing staked bales of hay).
Mandating the removal of as many excess nutrients ~~d other pol!u-
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tsnts as possible is a stronger lIleasure than merely educating the res i-
dents about the causes of pollution. However, the cost of this action
is minimal and recollllllendations la and lb could readily be combined at
the local level for A 1Il0re comprehensive attack on the problem.
At an additional cost to the' local governments, streets and parking
lots could be swept frequently with mechanical sweepers to rp.move accumu-
lated polluting materials which would otherwise be transported into the
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s tonu fi('werG Y1n runof f. VnCUUW-fi9S 16lcd l>t-ush C\oIccpcta are bCBt cu1 tcd
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for removing the very stn.I)l1 particles of inorgAnic nutrient., ",hich are
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not removed by conventional .",eepera (Sartor and Boyd 1972). S",eepers
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could effectively reduce the amount of inorganic nutrients, organic
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material, and man-made pollutants entering the bay, but are costly to
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acquire and maintain and are energy intensive.
The limited water quality data available indicate that the level of
pollution in Moorings Bay may be decreasing. If a drive to reduce the
pollutant load is effective end the exchange of waters with the Gulf can
be improved, the quality of the water in tbe body of Moorings 8ay should
reacb an acceptable level.
2. Measures to Improve the Circulation and Flushing
a. Return tbe depth of Moorings 8ay and tbe canals to a
more natural level.
Mitigating the pollutant load of Moorings Bay is a necessary first
step in improving \later quality but existing pollutants must then be .
removed from tbe system. Improving tbe circulation and flusbing of the
bay would deal ",itb this problem. The most effective means of improving
the flushing of tbe bay is by decreasing the depth. A depth of five or
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six feet at mean low water (KLW) 6hould be sufficient to =eet ~aVi&3-
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tional requirements but would cause a reduction in the volume of the,bay
to approximately one half of its preseot volume. This reduction sbould
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significantly increase the rate of flushing. The decreased depth would
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also result in a more effective vertical mixing, partially alleviating
the problem of low oxygen content of deep waters.
Reducing the volume oC the bay and canals by decreaSing the depth
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can be accomplished in one of two ways. The first way would be to place
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elf'nn, uncontamll\l1ted fill In th~ boy ond cnnol. to bring th~ depth
...!thln five to six feet HLW. Th~ amount of fill required to produce
this effect ,",ould be enormous (approxi=tely 12 x 106 or 12 million
cubic yards). Since large quantities of fill material are not availab)e
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In the vicinity of the bay, the fill would have to be imported. ,The
maintenance dredging is conducted in the body of tbe bay, a gradual but
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cost of purchasing, transporting, and placing large quantities of fill
would be extremely high. Clean fill cOsts approximately $3/cubic yard
In Collier County, yielding a total cost of approximately $36,000,000
for fill. Even if the funds could be obtained, or sufficient fill was
donated, fill of an appropriate composition and grain size would have to
be located and the necessary permits would have to be procured.
An easier and less costly solution would be to simply wait for the
sedimentation process to fill in the deep areas of the bay and canals.
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It is difficult to estimate how long this process might take. If no
noticable Improvement in flushing is expected because of the decreased
volume.
b. Widen the underpasses beneath the Harbour Drive and
Parksbore Drive bridges.
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Increasing the cross section~l areas of tbe bridge underpasses
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could enhsnce flushing of the central and northern segments of the bay
by increasing the flow of water to and from these areas. Widening of
these un~erpasses ...ould also allow the waters of the three segments of
the bay to intermix more freely. This actloD would primarily benefit
the northern reaches of the bay through an increased ra~e of removal of
introduced nutrients and organic detritus. Widening of thes~ under-
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passes would be a relatively costly undertaking, since the bridges would
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have to be dCf;tl"Oycd llnd rebuilt. TIle cost of constructing Ll b,"idc;.e
over a Lody of water is approxlmoltley $36/square foot according to
estimates from the Florida Department of Transportation. A Lridge 30
feet wide and 250 feet long would cost approx1matly $270,000 to construct.
The cost for reconstructing the bridges at Harbour Drive and Parkshore
Drive would be expected to exceed $5,000,000; however, the improved
circulation and water quality which would accrue could be substantial
enough to warrant serious consideration of the corrective action.
c. Maintain exiatin& bathymetric contours at Doctors Pass
and at brid~e undarpasGe9.
Bathymetric measurements suggest that Doctors Pass and the bridge
underpasses are subjected to considerable shoaling and infilling (Missimer
and Associates 1980). Periodic dredging of these areas could improve
flow and, thereby, increase flushing.
This limited maintenance dredg-
ing should be relatively inexpensive, and should be considered. State
dredging permits are required and would need to be obtained before
maintenance dredging could take place.
B.
Alternatives Considered But Not Recommended
Six additional alternatives were considered but are not recommended.
Some of these alternatives were proposed by Hissimer and Associates
(l980) ...h11e others had been regarded at the local level as options which
might remedy the water quality problem. Rejection of the alternatives
listed below is based prlmarUy on the limited improvement in water
quality which would be expected, the extreme costs, and the possible
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detrimental effects to ather systems.
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coawunicatlon). Placing dprap along the enUt'e shoreline of Hoorinca
Boy would cost approximately $4,)36,000 to $4,832,000. It is douutful
that the degree of improvctDeot in \Jater quality would justify such a
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large expenditure.
If riprap could be acquired at low cost and placed using city or
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county equipment the cost might be reduced considerably. It ia aloo
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posoible that certain areao of shoreline could be identified where the
defraction is greatest. Rtprap could be placed only at these locationa
to affect the greatest benefit for the least cost.
3. Construct an Additional Pass to the Gulf
A pass could be excavated through the narrow strip of land which
separates the northern reach of the bay from the Culf. By providi08 an
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additional route of exchange of bay water and Gulf water, flushing might
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be increased, particularly in the northern segment of the bay. However,
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construction of a new pass would be very difficult to accomplish since
the strip of land which separates the bay from the Culf is almost
totally developed. In addition, there is an excellent posoibility that
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the new pass would experience continuous shoaling. The lack of adequate
undeveloped land through which a pass could be excavated and the expense
of creating and maintaining a new pass makes this alternative an un-
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desirable one.
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4. In6tall Culverts to Connect the Canals
Culverts could be installed at the eastern ends of the canals in an
attempt to increase flushing and circulation in the canals. While some
movement of water would ta'ke place through the culverts, the magnitude
of exchange vould be slight because there would be little driving force
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1. En)ar&e,-.t.~Conne<:..tion Betwc~n H~rin.6.~B.n'y....!'_nd o.!,ter ClaOl Bay
Considerst ion lJas given to replsc inS the cauoelJay 8 t Seagate Road
"'Jeh a bridge. TIle "'idth of the connection bet...een the two bays lJould
be incressed to approximately 275 feet (l1issimer and Associstes 1980).
The cost of replacing the causelJay with 8 bridge lJould be approximately
$300,000. Increased exchange of water between the two bays could enhaoce
flushing of the northern extremity of the bay. However, io order to
prevent exccs.ive dewaterlng of Clam Bay, a structure which would permit
ooly northerly flow would have to be cOostructed. Such a st,ructure
would limit the potential increase in flushing and add to the overall
costs. In addition, the.flow of water frorn Moorings Bay to Clam Bay
could have a significant negative 1Jnpact on the water quality of Clam
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Bay. Activities which could significantly degrade the water quality of
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a Class II waterbody are stringently regulated. In view of the limited
benefits expected in terms of flushing of Mooring Bay, the possible ad-
verse consequences for CIsm Bay and the sizable costs, this alternative
1s Dot recommended.
2. Place Riprap Along tbe Vertical Seawalls
Riprap placed against the concrete seawalls could enhance circula-
tion and flow of water. Flow defraction and the formation of eddies at
protruding seawalls would be decreased, with an ensuing increase io
circulation io the canal. Riprap would also provide a narrow zone of
shallow water babitat for organisms which inhabit the bay. The cost of
placing riprap is estimated to be between $70/1inear foot and $90/linear
foot. The entire shoreline within 1100rings Bay is approximately 64,800
linear feet (TOOl McDaniels, Collier County Planning Office, personal
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to induce movement. of .....alC'( between the cnda of the c3llnlo. In addition.
placement of culverta would ncccasitotc extensive excavation tllrougt,
private developed property. and could greatly inconvenience the londowncro.
5. Reroute the Storm Sewer System
111e stonn sewer system which empties into Hoorings Bay could be
rerouted to retention or detention areas on land, or to the sanitary
sewer system where it ~ould enter the Naples sewage treatment plant.
This action ~ould almost completely eliminate the influx of pollutant
laden freshwater into the bay. The improvement in the water quality of
the bay ~hich would result from this course of action could be'substan-
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tial. However, rerouting of the storm sewer system would be extremely
costly and time consuming.
A detailed stormwater study was not possible with the liDdted funds
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available for this Phase I Study. Information concerni~g the type and
amount of pollutants ~hich enter the bay via stormwater would be necessary
before large sums of money are spent to reroute the stormwater. In addi-
tion it is doubtful that a sufficient amount of undeveloped land exists
in the vicinity of the bay for the construction of retention or detention
ponds. Diversion of collected runoff to the Naples sewage treatment
plant 1s inadvisable becsuse the increased burden ~ould overload the
plant and the effluent from the plant is discharged into Naples Bay.
Increasing the load of freshwater and contaminants which enters the
plant could have a ~ignifl~nt negative impact on Naples Bay which is
already polluted (Simpson et al. 1979). Therefore, neither of these
methods of rerouting the storm sewer system 1s reco~ended.
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6. Remove Accumulated Serl1mento
Accumulated organIc Watcr1n1 1n the oedimellts of the bay Could
perIodically be """'Oved by shallow dredg1os. This WOuld be relatively
eXpen6ive Bnd 16 unlikely to have any IOns-term benefIcIal results In
terms of the water quality of the bay. During the dredging operation,
oxidizable sediment would be reSuspended in the water column, thereby
reducIng the oxygen COntent of the water. This ~uld adVersely affect
Organis~ inhabiting the bay. FollOwing dredging, acc~ulation of
organic matter in the sediments WOuld reoume, quickly negatlns the
effect of their removal. The benefIts to be deriVed from such mainten_
ance dredging WOuld be slight and, considering the Costs and short-term
problems associated wIth dredging, this action is not reCOmmended.
7. Maintain Culverts Beneath Sea~ate Ro~
Maintenance cleaning of the culverts beneath Seagate Road could
increase flow through the culverts, but is unlikely to prodUce any
significant beneficiAl results in terms of flushing because the exchange
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of water through the culverts Would St111 be very slight.
is, therefore, not recommended.
Such action
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this date at 9:00 A.M. at the Coastal Zone Management Office at 3300 Santa
( ;;)S) Fbl1. t"'-t 12eciY2o_
10 FTh t~l~ JrouyO 1/Ih1
dt'c v&.",deJ. cQ()jl,C!
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LET IT BE REMEMBERED, that the Clam Bay Estuary Discussion Group C<... Vo i-e.l 0':1)1
in and for the County of Collier having conducted business herein, met on fJ1i1. {~, fOt'lna{
Yno{, IYV( '/<:J
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-yhe Bee
MINUTES OF THE MEETING OF THE
CLAM SAY ESTUARY DISCUSSION GROUP
Naples, Florida, June 9, 2008
Barbara Blvd., Naples, Florida with the following members present:
MEMBERS
John F. Sorey, III f) Naples City Council & CAC
Jim Burke f) CAC/PBSD Member
Dave Tomasko f) Consultant, PBS & J.
Coleman Connell f) Chairman PBSD
Mike Bauer f) City of Naples
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ALSO PRESENT:
Gary McAlpin f) Coastal Zone Management Director
The meeting was opened with the Pledge of Allegiance.
1. Call to Order
Mr. McAlpin, Coastal Zone Management Director, called the meeting to
Order at 9:00 A.M.
2. Roll Call
A quorum was established.
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3. Approval of Minutes - March 20, 2008
Mr. Sorey moved to approve the Minutes of the March 20, 2008 as submitted. Second by Mr. Burlce.
Carried unanimously, 5-0
4. Sunshine Comment
Mr. McAlpin stated this was a public meeting and the Sunshine Rules apply. Committee members from
various County Boards were in attendance. All meetings will be advertised and taped for OPublic Record.O
The meeting was in full compliance.
5. Public Comments fl None.
Mike Bauer arrived at 9: t 1 AM
8. Sub Committee Reports
a. Water Quality and SamPling f) Pamela Ke)taa, Chairperson
provided a report outlining the action plan decided on by the work group. (See
attached.) The work group met on April 11 , 2008 and planned the following:
To take random samples to gather monthly baseline data from five fixed points.
Each Sampler must be State certified,
Collier County Lab will not accept samples from anyone who is not State certified.
Sample locations will be:
The end of the T Canal
The end of the boat ramp area
The middle of Ciam Bay
Off the Seagate Culvert
Off the South Board Walk Bridge
Pamela Keyes stated she met with the Mixing Study Group and they recommended changing a few of the
sites for a better overall sampling of Clam Bay. The change recommendation was the sample location from
the end of the T Canal to off the drawbridge or add an additional location in the middle of Clam Bay.
Katie Laakkonen presented a list of what the City of Naples tests for in the Gordon River and the 24
parameters will be consistent.
Pamela Keyes noted at the OMixing Study GroupO meeting, David Tomasko
suggested testing for only 15 parameters, which would save approximately $7,000
and still provide a solid baseline of data.
All the data will be stored in the State STORET system and will be available for publiC viewing and will be
posted on the Coasfal Zone Management website.
Coastal Zone Management has been approved for $20,000 of funding for the next fiscal year, towards water
quality in Clam Bay and will include lab cost and YSI equipment.
Water quality sampling could begin October 1, 2008.
The group discussed conducting the same plan in Moorings Bay using the same parameters, on or close to
the same days. There may be a need for more sampling sites and GPS points. This would require Samplers
to be State certified.
Mr. McAlpin asked - why change the parameters from what the City of Naples is
doing.
Mr. Tomasko responded the City of Naples water monitoring programs include
more water quality parameters than are needed for the purposes of going through
the PMBL process.
Mr. McAlpin asked if there was any need for sediment sampling to be done at
this time.
Mr. Tomasko suggested a Low Tech Screening approach without any parameters
to make that determination before making a decision to add this test. He noted at
this time there is no evidence of wide spread contamination of sediment.
Sampling can get costly and the sampling may come up with nothing.
Tim Hall, Turrell Hall & Associates expressed concern regarding the changing
of the sampling location from the T Canal to the middle of the Bay stating it
would not identify the problem areas.
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Speaker
Kathy Worley, Conservancy stated she agreed.
it is important to have a sampling site at the end of the T Canal to get an idea of
everything that is flowing in and out of the Bay. If BMPs are installed into
Seagate this would show if they are working. If is important to have a sampling
site that is in that Canal because it is one of the inputs. She agreed with cutting
back on the parameters and doing just the essentials.
Mr. McAlpin clarified the group moved toward the revised set of parameters and
would like to add a location at the end of the T Canal. He suggested the
Committee be ahead of funding and have the SOP and Timing written for the next
meeting.
Pamela Keyes noted the sampling tests will be done at the County Lab and Samplers must take an B-hour
course through Gainesville to be certified, or the County will not accept the samplings. She will put the data
into storage.
Mr. Sorey recommended documenting what actually needs to be done and have
it available for the next meeting.
Speaker
Marsha Cravens, Mangrove Action Group commented on the Pelican Bay Service Division and 9
years of quality data they collected and in the terms of sedimentation and DO and characteristics of Clam
Bay being a mangrove dominated estuary, and they know there Is detritus from the mangroves
within the system. She pointed out the Department of Environmental Protection has not had any
problems with the water quality data.
b. BMP. for SaRgiS" and Venda" Bav f) Mike Bauer Chairman
This work group is working on t~e basis, based on, the modeling assunwio,,~
_ there are water quality issues. a"S;~1n Sea~l!c VenetianJ:lay andp'!.s~ill!l'i~_
the big parkmg lot "rme \jaunty ar 1'fi8Iilre affecting outer Clam Efay.llie
Committee would like to improve the Functionality Eoosystem with the BMPs,
which would be dependent on water quality data and hydrologic modeling. He
stated because the data is not available, it would be hard to make any
oonclusions on BMPs.
The work group has been identifying projects to work on. Some of the probable projects are:
Aerators in Seagate Canals - Canals are dead-ends and have stagnant waters.
Storm Water - Swales in the neighborhoods, locating places for small filter marshes.
Locating sites for BMPs depending on data received on water quality.
Construction of oyster reefs.
Mr. Sorey stated the City of Naples passed 2 major Ordinances;
Residential Storm Water Retention Requirement Ordinance that requires the first
inch and a half of water be retained at new construction sites and the Fertilizing
Ordinance that eliminates fhe use of phosphorus fertilizers and to utilize low
nitrogen fertilizers so that less nutrients move from city property into natural water
bodies.
Dr. Bauer stated the City of Naples has built an oyster reef in Moorings Bay which has created an
Ecosystem; aSave the Bays.O The program has been growing clams and oysters. Another program is the
building of a small filter marsh at Riverside Circle Campus, Engineering work has begun.
Mr. Sorey stated at a recent meeting the Seagate residents expressed interest in
setting up a taxing district if the canals need to be dredged. City Council has
indicated support in dredging, if required.
Tim Hall pointed out another funding option for water quality improvements
would be to utilize mitigation funding from outside sources.
Dr. Beuer responded that the City does have a memorandum of understanding
with the Department of Environmentat Protection, that the Study Group can use
any mitigation funds received from projects within the City that go to the
Department of Environmentaf Protection. The City will provide those funds and
fhe Committee would do mitigation for them.
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c. Mixing Study fl Dave Tomasko reported the work group met once on a
conference call and a second meeting was at Coastal Zoning. The work groupO
intent is to coordinate water quality aspects with Circulation Model approaches by
doing a Circulation Study that fits within the Water Quality Study.
Two different circulation models exist; one is a Three Dimensional Circulation
Model and the other is a Two Dimensional Circulation Model. Dave stated the
Two Dimensional Circulation Model would be sufficient and less costly to study.
Jeff Taber, PBS & J introduced Todd Demunda, PBS & J and expressed the
need for coordination aspects with water levels, and tide information and current
velocity data to make modifications to the existing conditions and changes. This
data will allow predictions to be made on the effect of modifications such as if
dredging(s) were to be done or for a construction of a bridge, etc.
He discussed collecting the data upfront.
5 Tide Locations are:
2 already exist in Northern Clam Bay
outside the mouth above Doctors Pass
outside the mouth above Clam Pass
In Clam Bay
3 Current Gauge Locations taking IOta 15 water quality samples throughout the entire study area
would inclUde; Northem Clam Bay area, down to Clam Pass, through Clam Bay into Moorings
Bay and Doctors Pass.
The Current Gauge locations are:
Park Shore Bridge Intersection
Harbour Drive Bridge Intersection
Seagate Drive Culvert
Dr. Bauer noted the Moorings Bay Citizens Advisory Committee, which is the
Advisory Board for the Moorings Bay SpeCial Taxing Committee, has agreed to
provide funding to rent some instrumentation to be placed at Harbour Drive and
Park Shore Drive retlects the City is willing to assist.
SpABkAr
Marsha Cravens, Mangrove Action Group snd a Taxpayer provided an
excerpt from the Collier County Hazard Mitigation Plan, 7.0 Floodplain
Management Plan dated April 15, 2005 (See attached)
Marsha asked what Dave Tomasko meant when he spoke about Oresident timea
and if It was the same as Olag time.a
Mr. Tomasko responded that Oresident umeO is the same as Oreplacement time. 0
County already has a
provided be added to the minutes for
basin and sub-basin information is already available.
Marsha Cravens noted Water Studies have been done previously and why
should the taxpayers pay for this to be done again. Collier
program in place and requested the excerpt
Public Reoord. Drainage,
Mr. McAlpin pointed out Marsha was tatking about drainage which is only a part of the estuary studies and
a mixing 01 the lidat 1I0ws. He also stated there is a significant difference and the drainage would be only
one piece of the study.
Speaker
David Roelllg stated the pass flow changes daily and recommended that a flow
meter be installed in Clam Pass.
d. .&imllIl.ypasslng fl Jim Burke stated the Sand Bypassing is the most critical component for
the overall Group. Dredging is critical to the ongoing health of the entire Clam Bay system. The
Group Is working on a Sand Bypassing Permit Application for Clam Pass.
Jeff Taber, PBS & J pointed out there was currently an existing regulatory authorization for the dredging of
Clam Pass. The County and Pelican Bay both submitted a request for an extension of the existing
authorization for another year. There have been discussions that DEP will be issuing an extended
authorization for another year and then the following year a new authorization will have to be applied for.
lOF
Jeff spoke of the interviews and research he is conducting with other firms that
had been involved with the inlet previously.
Mr. Burke reiterated this Work Group has met once and only 3 Sub-Committee members were present. He
suggested the Committee broaden its participation and extended an invitation to David Roellig to join the
Sand Bypassing Sub- Committee,
Mr. McAlpin announced an item coming up before Councilman Sorey at the
Coastal Advisory Committee Meeting this Thursday on a Consultant Agreement
for Sand Bypassing Development with PBS & J in the amount of $25,000 to be
authorized by Coastai Advisory Committee.
SDA8kArA
David Roelllg stated the Clam Pass is the most natural pass in Collier County and
announced concern about taking a natural pass and changing the pass in another
physical location without structures.
Marsha Cravens voiced her objection on dredging the abs howl, pointing out
that over dredging has caused major erosion on Barefoot Beach and now they are
taking action to put the beach back into the original state. She stated she did not
want to see this happen to Clam Pass.
Mr. Burke commented that no action has been proposed at this time.
e. Navlaation n Garv MeAIDln
The Work Group has met on a couple of times. Gary provided the minutes from
the April 9, 2008 meeting (See attached)
Infonnational Signs and Markers, if required, will be installed per Department of Environmental Protection and
US Army Corp of Engineers. The Committee has requested written guidance from the two permitting
agencies regarding requirements. 28 red and green markers and 5 Information signs may be required.
Permit applications have been applied for. This process takes time and the Committee would like to close
out the pennit.
Coleman Connell asked if Pelican Bay Services Division were required to install
the markers, would the Taxpayers of Pelican Bay Taxing District be the party
responsible to pay for them.
Mr. McAlpin responded EJ yes.
Marsha Cravens noted at the June 4, 2008, Pelican Bay Services Division
meeting, channei markers were a major item on the agenda. The canoe trail is
valued by many clubs and families and is utilized by many, many people. In
discussions with the Coast Guard it has been made clear, if the navigational
installed, then the canoe trail has to come out. The loss of the canoe trail
loss to the community.
signs are
would be a serious
Mr. McAlpin stated he expected to hear back from both agencies within the next
week.
f. Marine Life fl Tim Hall
The Work Group met on April 23, 2008 and discussed seagrasses as a component that has already be~~SIS
~ monitored. The Work Group discussed whefher to fracktolal coverage within the sysfem on an OnQoirlQ
or the occurrence-9!~J!Jl.~asses within the system on an ongoing basis ano In terms of the overall ~ fi'
h~!lIIh.of the BI!Y. The group came to Ii consensus ih-lififwould be more practical to tracK the health of the
baylhrougn a monitoring percentage of occurrences rather then an overall coverage. He stated it
would cut down the cost in terms of the amount of investigation that would be needed
The Work Group study includes randomized sites confined within Outer Clam
Bay and planned to:
Use a Random Sampling Generator to chose sites and then to utilize those sites on a regular
basis.
If Acreage Estimates are required, this study can be done every 5 years.
~ X S to'J {'CUie .!:
<.Lit-
;'IIfi.ic..aJkrs <l>( c~&1 he<LIH.~~Y--fu..I3'7
lOFl
Monitor Bi Annually instead of once a year.
Mapping effort done to itemize all the different habitant in the bay.
Prioritize monitoring efforts from most important down to the least important for funding purposes.
Mr. McAlpin asked the Sub-Committee to provide a proposal of different levels of monitoring in
terms of marine life and cost for the next meeting to assist in obtaining funding.
Mr. Tomasko made a reoommendation on the potential for acreage estimate for the bay,
stating there is an existing mapping effort by Southwest Florida Water Management
District Studies every two years; November through the end of January. There is a
possibility they would place a couple of additional flatbeds for the study.
Discussions where made on the biologic monitoring in the Bay area and previous
studies and none of the monitoring will include any areas south of Seagate Drive.
bioiogical
g. Edueatlon and OutrAACh n GarY McAlpin
There had not been a meeting for this Sub-Committee.
h. EwllIln9 fl Leo OchslGa'1f McAlpin
There had not been a meeting for this Sub-Committee.
i. Permitting fl Ga'Y McAlpin provided a copy of the Clam Bay Permit Meeting
Minutes for April 30, 2008 with Federal Department of Environmental Protection
at the Fort Myers office. (See Attached)
Mr. McAlpin stated on April 22, 2008, the Board of Commissioners directed
Pelican Bay Services to continue to perform mangrove maintenance with the 5-
year mangrove maintenance permit. that the existing 10-year permit not be
renewed and sunset after the one-year extension has been granted, if approved and
appropriate with Federal Department of Environmental Protection. Collier
was directed to deveiop a Master Plan for the estuary. The existing
natural disaster or emergency if there was a need for
County staff
permit would cover any
dredging.
7. Additional Actions Moving Forward
Mr. McAlpin summarized the next steps for the Sub-Committees as follows:
Water Quality and Sampling to provide a protocol, schedule and timing.
BMP6s for Seagate & Venetian to set up priority list reflecting the ones that oould be done relatively easy
and the ones that will need funding.
MilliD!l.SIudlt to finalize the program and provide pricing per module and Current Row at the Pass and modify
fhat program with a proposal. Discuss how to aCQuire funding with the Committee.
Sand Bvoassing will give Jeff Taber the Ogo aheadO on sand bypassing studies and permit applications at
the next CAC meeting. Provide an update at the next meeting.
Nli'LigalWn should have issues resolved by next week and put to bid by the meeting.
Marine Life to provide a proposal covering the different components and costs to request proposals.
Education and Outreach Sub.Committee needs to have a meeting to decide what can be done.
Fundino Sub-Committee needs to have a meeting once all the Information has been received by the other
committees and what can be done and how to contribute.
Permitling should have clarification from the agencies and issues resolved by next meeting.
8. Public Comments fl 3 Minutes per Speaker
Marsha Cravens stated the Meeting Summary Minutes for Federal Department of Environmental Protection
meeting held on April 30, 2008, the following oorrections needed to be made. Under Attendees; David
Roellig was not with Pelican Bay Service Division and the Mangrove Action Group is not a sub-group of
Pelican Bay Services.
Doug Finlay, City 01 Naples requested clarification on the parameters used on Moorings Bay, Naples Bay
and Clam Bay.
Dr. Bauer rasponded the funding for waler quality samplings at Moorings Bay have not been approved but if
they do get the funding, the parameters will be the same as Naptes Bay.
Mr. Tomasko added the intent was not to have any duplicate sampling. The samplings that will be done in
Moorings Bay have not been finalized. As far as the Department of Environmental Protection is concerned,
Ciam Bay does not exist at this time. This is due to the fact that no data has gone into the State STORET *
system.
"'i
LA..",$ 0\.-1:, <;ievlA ~'CA J.eJ S ..J~i{fl1~rf
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Doug Finlay asked if Moorings Bay was polluted.
Dr. Bauer responded by State standard it is not pollutad.
Cathy Worley stated Moorings Bay is not polluted. It is typical of a canal system and typical of a bay with
dead end systems with higher nutrients at the ends of the bay. Moorings Bay has a man.made canal
system.
Mr. Tomasko pointed out collecting nutrient data will provide the information to establish if Moorings Bay has
a poorly circulated system.
9. Next Meeting
The next meeting will be held on Monday, August 4, 2008 at 9:00 AM.
There being no further business for the good of the County, the meeting was adjourned at 10:59 AM.
Clam Bay Estuary Discussion Group
Gary McAlpin
These Minutes were approved by the Discussion Group on _____,
as presented or as amended _____.