Agenda 03/21/2016-S PELICAN BAY SERVICES DIVISION
Municipal Services Taxing & Benefit Unit
NOTICE OF PUBLIC MEETING MONDAY, MARCH 21, 2016
THE PELICAN BAY SERVICES DIVISION BOARD WILL MEET IN SPECIAL
SESSION AT 4 PM ON MARCH 21 AT THE COMMUNITY CENTER AT PELICAN
BAY, LOCATED AT 8960 HAMMOCK OAK DRIVE, NAPLES, FLORIDA 34108.
AGENDA
1. Pledge of Allegiance
2. Roll call
3. Agenda approval
4. Audience comments
5. *Review of the Clam Pass construction plans and specifications
6. Adjournment
*indicates action items
ANY PERSON WISHING TO SPEAK ON AN AGENDA ITEM WILL RECEIVE UP TO THREE(3)MINUTES PER ITEM TO ADDRESS THE
BOARD. THE BOARD WILL SOLICIT PUBLIC COMMENTS ON SUBJECTS NOT ON THIS AGENDA AND ANY PERSON WISHING TO
SPEAK WILL RECEIVE UP TO THREE(3)MINUTES.THE BOARD ENCOURAGES YOU TO SUBMIT YOUR COMMENTS IN WRITING IN
ADVANCE OF THE MEETING.ANY PERSON WHO DECIDES TO APPEAL A DECISION OF THIS BOARD WILL NEED A RECORD OF
THE PROCEEDING PERTAINING THERETO, AND THEREFORE MAY NEED TO ENSURE THAT A VERBATIM RECORD IS MADE,
WHICH INCLUDES THE TESTIMONY AND EVIDENCE UPON WHICH THE APPEAL IS TO BE BASED. IF YOU ARE A PERSON WITH A
DISABILITY WHO NEEDS AN ACCOMMODATION IN ORDER TO PARTICIPATE IN THIS MEETING YOU ARE ENTITLED TO THE
PROVISION OF CERTAIN ASSISTANCE. PLEASE CONTACT THE PELICAN BAY SERVICES DIVISION AT (239) 597-1749 OR VISIT
PELICANBAYSERVICESDIVISION.NET.
03/17/2016 2:27:15 PM
Agenda Item#5
Page 1 of 18
EXECUTIVE SUMMARY
Recommendation to declare that emergency conditions exist at Clam Pass and in the Clam
Bay Natural Resource Protection Area (NRPA) and ratify staff actions to quickly mobilize
a dredging firm to restore sufficient tidal flushing prior to turtle nesting season, which
starts on May 1,2016.
OBJECTIVE: To quickly mobilize a dredging firm to restore tidal flushing at Clam Pass to
avoid further environmental harm to the Clam Bay Natural Resource Protection Area(NRPA).
CONSIDERATIONS: Clam pass directly impacts the Clam Bay NRPA which is a 560 acre
estuarine system consisting of beaches, shallow bays, tidal creeks, seagrass beds, and mangrove
forests. This environmentally sensitive asset is managed by the Pelican Bay Services Division
(PBSD).
Mohamed Dabees, a P.E. at Humiston and Moore Engineers,provided the following assessment
of Clam Pass on February 1,2016: "The hydraulic and physical monitoring data indicate the pass
to be hydraulically stable but critical due to the sand accumulations in the interior flood shoal
sections. Over the winter months it is expected if severe weather conditions continue then waves
and wind will continue dominating the inlet dynamics over tidal flow which may reduce inlet
stability. Maintenance dredging is recommended, once the required U.S. Army Corps of
Engineers permit (in process) is obtained, to restore the flow areas in the interior flood shoal
areas to meet design template, improve inlet stability and its resiliency to withstand sequence of
storm events in the future."
The National Weather Service recently reported that rainfall in coastal Collier County from
November 2, 2015 to February 19, 2016 was 18.96" which was an increase of 12.08" or 278%
higher than normal for this period. This infusion of freshwater, along with the gradual narrowing
of Clam Pass has impaired the tidal circulation in Clam Bay. Similar conditions in 2012 and
2013 resulted in degradation of water quality. Clam Pass remains the primary source of tidal
flushing for Clam Bay and the present condition of the inlet does not allow for adequate tidal
exchange. In order to restore sufficient tidal flushing, it is imperative to commence and complete
dredging operations as soon as possible prior to turtle nesting season, which begins on May 1,
2016. Staff was reluctant to issue a solicitation without the assurance that a permit would be
forthcoming and permit conditions, if any, properly included. The PBSD's 10-year maintenance
dredging permit was issued by the Army Corps of Engineers on March 9,2016.
Staff worked with the engineering firm Humiston and Moore, to prepare and distribute a
solicitation in the open market with a compressed due date.Invitation to Bid (ITB) 16-6620 was
issued on March 4, 2016 with a due date of March 23, 2016. Florida Statute 255.0525 requires
construction projects that may exceed $500,000 to be posted publicly for a minimum of thirty
(30) days, except in cases where an emergency exists. If an emergency is declared, "the
procedures required in this section may be altered by the local governmental entity in any
manner that is reasonable under the emergency circumstances."
Staff is requesting that the Board declare that emergency conditions exist at Clam Pass, waive
the Procurement Ordinance, ratify ITB 16-6620 with the compressed solicitation schedule, and
authorize the County Manager or his designee to enter into a contract with the most responsive
bidder immediately following the due date of March 23, 2016. Staff will subsequently seek TDC
Agenda Item#5
Page 2 of 18
approval on March 28, 2016, as required by resolution prior to expending TDC funds and bring
the approved contract back to the Board for ratification on April 12,2016.
None of the sand dredged from the pass will be used north of the pass for upland beach
renourishment. The sand will be distributed in accordance with the permitted design and any
additional sand will be used south of the pass on the public beach.
PBSD BOARD RECOMMENDATION: At its meeting on March 2, 2016, the PBSD Board
acknowledged the emergency situation and endorsed staff's recommendation to pursue an
expedited procurement process in order to commence dredging operations as soon as possible.
FISCAL IMPACT: No funds have been expended on this project; however, dredging for pass
and inlet maintenance is eligible for Tourist Development Council (TDC) funds as was the case
in 2012 and 2013. The engineer's estimate of probable cost is$459,800.Funds in the amount of
$400,000 are budgeted and presently available in TDC Beach Renourishment Fund (195) in
Project No. 88032 (Clam Pass Dredging).Additional funding is available in Fund(195)reserves
subject to budget amendment processing.
GROWTH MANAGEMENT IMPACT: None
LEGAL CONSIDERATIONS: Pass and inlet maintenance is an authorized expenditure of
tourist development tax funds pursuant to Ordinance No. 92-60, as amended. Prior to the
expenditure of tourist development tax funds, the Tourist Development Council ("TDC") is
required to make a recommendation to the Board of County Commissioners, favorable or not,
with a recommended finding as to whether a project promotes tourism. Staff plans to seek a
TDC recommendation at the next regularly scheduled TDC meeting on March 28, 2016. This
item has been approved as to form and legality and requires majority vote for approval.—CMG
RECOMMENDATION: To declare that emergency conditions exist at Clam Pass, waive the
Procurement Ordinance, ratify ITB 16-6620 with the compressed solicitation schedule, and
authorize the County Manager or his designee to enter into a contract with the most responsive
bidder immediately following the compressed solicitation due date of March 23,2016.
Prepared by: Lisa Jacob,Associate Project Manager,Pelican Bay Services Division
Approved by: Neil Dorrill, Director,Pelican Bay Services Division
Attachments:
(1)Emergency Resolution
(2)Clam Pass Condition Update
(3)ITB 16-6620
(4)Engineer's Opinion of Probable Cost
(5) 10-Year ACOE Permit
(6)Aerial Photography of Clam Bay NRPA
(7)Construction Plans 03.08.2016
Agenda Item#5
Page 3 of 18
RESOLUTION NO. 16-
A RESOLUTION OF THE BOARD OF COUNTY COMMISSIONERS OF
COLLIER COUNTY, FLORIDA DECLARING THAT EMERGENCY
CONDITIONS EXIST AT CLAM PASS AND RATIFY STAFF ACTIONS
TO QUICKLY MOBILIZE A DREDGING FIRM TO RESTORE TIDAL
FLUSHING PRIOR TO TURTLE NESTING SEASON, WHICH STARTS
ON MAY 1,2016.
WHEREAS, the National Weather Service recently reported that rainfall in coastal
Collier County from November 2, 2015 to February 19,2016 was 18.96", an increase of 12.08"
or 278%higher than normal for this period;and
WHEREAS, this infusion of freshwater along with the gradual narrowing of Clam Pass
has impaired the tidal circulation in Clam Bay;and
WHEREAS, Clam Pass remains the primary source of tidal flushing for Clam Bay and
the present condition of the inlet does not allow for adequate tidal exchange;and
WHEREAS, in order to restore sufficient tidal flushing, it is imperative to commence and
complete dredging operations as soon as possible prior to turtle nesting season, which begins on
May 1,2016;and
WHEREAS, the PBSD's 10-year maintenance dredging permit was issued by the Army
Corps of Engineers on March 9,2016;and
WHEREAS, staff worked with the engineering firm Humiston and Moore,to prepare and
distribute a solicitation in the open market with a compressed due date;and
WHEREAS, the Engineer has advised that"maintenance dredging is recommended,once
the required U.S. Army Corps of Engineers permit (in process) is obtained, to restore the flow
areas in the interior flood shoal areas to meet design template, improve inlet stability and its
resiliency to withstand sequence of storm events in the future;"and
WHEREAS, Section 255.0525, Fla. Stat. requires construction projects that may exceed
$500,000 to be posted publicly for a minimum of thirty (30) days, except in cases where an
emergency exists;and
WHEREAS, if an emergency situation is declared,the procedures required in this section
may be altered by the local governmental entity in any manner that is reasonable under the
emergency circumstances.
NOW TI-IEREFORE,BE IT RESOLVED BY THE BOARD OF COUNTY
COMMISSIONERS OF COLLIER COUNTY,FLORIDA,that
1. Emergency conditions exist in Clam Pass.
ei
a
Agenda Item#5
Page 4 of 18
2. It is necessary to waive the Procurement Ordinance and to expedite the competitive
bid process as provided for in Section 255.0525,Fla. Stat.
3. The County Manager or his designee is authorized to enter into an agreement with the
most responsive bidder to ITB 16-6620 immediately following the solicitation due
date of March 23,2016.
PASSED AND DULY ADOPTED by the Board of County Commissioners of Collier
County,Florida,this day of , 2016.
ATTEST: BOARD OF COUNTY COMMISSIONERS
DWIGHT E.BROCK,CLERK COLLIER COUNTY,FLORIDA
By:
DONNA FIALA,CHAIR
Approved as to form and legality:
Colleen M. Greene
Assistant County Attorney
Agenda Item#5
Page 5 of 18
CLAM PASS CONDITION UPDATE
February 1st,2016
Mohamed Dabees,Ph.D.,P.E.,D.CE.
Humiston&Moore Engineers
Background
In two months Clam Pass will have remained open for 3 years since it was last dredged in March 2013.The 2013 partial dredging of
the design template was permitted and constructed as an emergency event to reopen the pass following closure in late 2012.The
dredging event of 2013 was limited to comply with the Nationwide US Army Corps of Engineers permit conditions which was
necessary to expedite the dredging and reopen the inlet. Following the reopening of the Pass an update to the management plan
for the Clam Bay as a Natural Resource Protection Area(NRPA)was developed in 2014 and adopted by the Collier County Board of
County Commissioners in January 2015.The updated management plan included design criteria to assess the inlet stability and
conditions for maintenance dredging to avoid potential inlet closure.The process to obtain State and Federal long-term permits for
the updated plan was initiated in December 2014, and the updated state permit was obtained in the summer of 2015 while the
Federal permit is in its final processing stage.
Monitoring data and observations of recent conditions
In addition to the ecological and biological monitoring of the bay system and its function as a protected environmental resource,the
monitoring program includes hydraulic and physical monitoring of the inlet and bay system to monitor the stability of the pass and
assess maintenance requirements. Monitoring of the hydraulic and physical conditions of the Clam Bay system continues according
to the updated NRPA management plan. The hydraulic monitoring includes continuous water level and tidal data collection at 4
locations within the bay system. The physical monitoring is based on an annual monitoring survey, monthly aerial photos and
periodic site observations.
The 2015 monitoring survey was completed in April 2015 corresponding to 2-years after the latest dredging event.The survey data
and analysis of comparative plots at survey stations were used to quantify flow areas and sand accumulation within the design
template.The 2015 data and recent field observations indicate sand accumulation is at critical conditions especially in the interior
flood shoal sections of the maintenance dredging template.The monitoring data also showed growth and seaward advance of the
inlet ebb shoal features at the gulf entrance of the pass.The seaward advance of the ebb shoal helps dissipate wave energy and
bypass sand to adjacent beaches around the inlet channel.The calm tropical summer season of 2015 and strong astronomical tides
including the lunar eclipse on September 27, 2015 helped improve the flow conditions at Clam Pass during the summer and fall
seasons of 2015.
The morphologic futures of the inlet ebb shoal were essential to the pass resiliency in withstanding the sustained winds and waves
that dominated the coastal processes in January of 2016.The cold fronts of this winter are associated with the El Nino phenomenon,
which occurs usually every six or seven years in the Pacific Ocean in which warm water near the equator results in atmospheric
conditions that affect winter weather patterns over the entire country.The main impact of El Nino is that it shifts to the south all the
winter storms that typically sweep across the middle and northern parts of the country.This brings severe weather conditions with
higher wind and wave energy to the southwest Florida gulf coast than typical winter conditions.The natural resiliency of the pass to
remain open comes from its ability to absorb influx of sediment through tidal flow meandering around the interior shoaling areas
during flood tide and remove accumulated sediment to the outer ebb shoal during ebb tide. However, when the flood shoals
become too full,the flow becomes constricted which may affect the inlet hydraulic stability.As the volume of sand accumulation in
the flood shoal areas reach near the dredging template capacity,the constricted flow also forces the interior channel meanders to
encroach and undermine mangrove shorelines in the flood shoal area. If the Pass interior flow areas become too constricted,the
resulting diminished flow may not be able to effectively maintain the pass open when large volume of sediment transported along
the coastline is deposited onto the inlet during storms.
Suunrrnary mid Recommendation
The hydraulic and physical monitoring data indicate the pass to be hydraulically stable but critical due to the sand accumulations in
the interior flood shoal sections.Over the winter months it is expected if severe weather conditions continue then waves and wind
will continue dominating the inlet dynamics over tidal flow which may reduce inlet stability.Maintenance dredging is recommended,
once the required U.S.Army Corps of Engineers permit(in process)is obtained,to restore the flow areas in the interior flood shoal
areas to meet design template,improve inlet stability and its resiliency to withstand sequence of storm events in the future.
Agenda Item#5
Page 6 of 18
BID SCHEDULE
Clam Pass Dredging
Bid No. 16-6620
I '
Engineer's Opinion of Probable
Cost March 10, 2016
Unit of
Item Description Measure Multiplier+ Unit Price Total
1 Mobilization&Demobilization* Lump Sum 1 $135,000 $135,000
2a Dredging and Disposal/Placement Cubic Yard 14,500 cy $14/cy $203,000
of Sand ** '
2b Cut/Fill Grading along Inlet Banks Lump Sum 5,000 cy $30,000 $30,000
in Section A
3 Final Grading&Tilling Lump Sum $7,000 $7,000
4 Turbidity Monitoring Lump Sum 1 $25,000 $25,000
5 Post Construction Survey*** Lump Sum 1 $10,000 $10,000
6 Bond Lump Sum 1 $8,000 $8,000
7 Subtotal $418,000
8 Project Contingency 10% $41,800
9 Total $459,800
*Mobilization and Demobilization should include allowance for dredging access from
Gulf of Mexico to Station 0+00 for ingress and egress and restoration of upland access
areas. Sand dredged for ingress and egress will not exceed the dimensions of the
design cut in Section A with overdepth of 6 inches, and the sand will be placed in the
south beach disposal area per Technical Specifications.
**This quantity is based on the March 2016 survey by Agnoli, Barber and Brundage, Inc.
and the design cut plus 6 inch overdepth from Stations 0+00 through 17+00.
***Post Construction Survey can be a combination of pay surveys completed under the
direction of a registered Professional Surveyor and Mapper.
Please state the shortest amount of time your firm can complete this project from receipt
of a written Notice to Proceed from the County(in days).
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TS-7.2 Beach compatible sand: For hydraulic dredge and filling operations where sand
placement is not limited to areas upland of mean high water, the Quality Assurance
Program to be administered as part of the construction operation will have the following
limitations described below.
Sand placed on the beach will be monitored and tested in accordance with state
requirements to ensure that after the sand is placed and graded, the sand material must
meet the following criteria to be considered beach compatible:
Sediment Parameter Maintenance Dredge Cut
Allowable Wet Munsell Value (referenced to the 2000 Standard) 6 or higher
Maximum Fine Gravel Content 5%
(Material passing 3/" sieve and retained on the#4 sieve, assumed to be shell.)
Maximum Coarse Gravel Content (Material greater that%") 3%
Maximum Silt Content (Material passing#230 sieve) 5%
Since the sand being dredged originated from the littoral system and is located within areas
previously dredged, it is expected that the sand being dredged and placed on the beach will be
consistent and within the criteria referenced above. ENGINEER will collect samples for visual
inspection every 500 feet of beach placement. Samples will be analyzed for every 5000 cubic
yards of sand placed on the beach in accordance with the DEP permit and DEP approved QA/QC
plan.