PBSD MSTBU Clam Bay Committee Agenda 11/14/2019 PELICAN BAY SERVICES DIVISION
Municipal Service Taxing and Benefit Unit
NOTICE OF PUBLIC MEETING NOVEMBER 14, 2019
THE CLAM BAY COMMITTEE OF THE PELICAN BAY SERVICES DIVISION WILL
MEET AT 1:30 PM ON THURSDAY, NOVEMBER 14 AT THE PELICAN BAY
SERVICES DIVISION, 3RD FLOOR OF THE SUNTRUST BUILDING, SUITE 302,
LOCATED AT 801 LAUREL OAK DRIVE, NAPLES, FLORIDA 34108.
AGENDA
1. Roll call
2. Agenda approval
3. Approval of 09/10/19 meeting minutes
4. Audience comments
5. Clam Pass
a. October tidal ratio report
b. October aerial photo
c. Video of H&M report
d. Timeline for dredging-related activities
6. Water Quality
a. Copper results
b. Second and third water quality reports.
7. Clam Bay
a. Update on monitoring
b. Canoe trail markers 10 and 12
c. Scaevola treatment
d. Update on County boater safety zone signage
8. Clam Bay Expenses
a. Consulting expenses in FY19
b. $150,000 in Fund 111
9. Annual reports
a. Clam Bay: due December 20, 2019
b. Bathymetric and Tidal Analysis: due December 20, 2019
c. Water Quality: due March 15, 2020
10. Next meeting: December 10 or 12, 2019 or January 7 or 9, 2020
11. Adjournment
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.
09/03/2019 10:26 AM
PELICAN BAY SERVICES DIVISION
CLAM BAY COMMITTEE MEETING
SEPTEMBER 10,2019
The Clam Bay Committee of the Pelican Bay Services Division met on Tuesday, September 10 at
1:30 p.m. at the SunTrust Bank Building, 801 Laurel Oak Drive, Suite 302,Naples,Florida 34108.
In attendance were:
Clam Bay Committee Denise McLaughlin
Susan O'Brien, Chairman Rick Swider
Pelican Bay Services Division Staff Mary McCaughtry, Ops. Analyst
Neil Dorrill, Administrator Alex Mumm, Interim Sr. Field Supr.(absent)
Lisa Jacob, Interim Operations Manager Barbara Shea, Recording Secretary
Also Present Jeremy Sterk, Earth Tech
Jennifer Bobka, Earth Tech Scott Streckenbein, PBSD Board
Mohamed Dabees, Humiston& Moore
APPROVED AGENDA (AS PRESENTED)
1. Roll call
2. Agenda approval
3. Approval of 07/11/19 meeting minutes
4. Audience comments
5. Clam Pass
a. August tidal ratio report
b. August aerial photos
c. Background on County's request and response
d. Possible talking points
e. Timeline for dredging-related activities
f. Advanced beach renourishment
6. Water Quality
a. Copper results
b. Phosphorus levels in Clam Bay
c. County lab reports
d. PO for water quality reports
7. Clam Bay
a. Hand-dug channel maintenance
b. Canoe trail markers 10 and 12
c. Scaevola treatment
d. Canoe Trail guide
e. Pelican Bay Post articles
f. Update on Manatee Protection Zone
8. Next meeting: October 4 or 7, 2019
9. Adjournment
1
Pelican Bay Services Division Clam Bay Committee Meeting
September 10,2019
ROLL CALL
All members were present and a quorum was established
AGENDA APPROVAL
Ms. McLaughlin motioned, Ms. O'Brien seconded to approve the agenda as
presented. The motion carried unanimously.
APPROVAL OF 07/11/19 MEETING MINUTES
Ms.McLaughlin motioned,Ms.O'Brien seconded to approve the 07/11/19 meeting
minutes as presented. The motion carried unanimously.
AUDIENCE COMMENTS
None
CLAM PASS
AUGUST TIDAL RATIO REPORT
Dr. Dabees, Environmental Consultant with Humiston & Moore, reported that tidal ratios
remain consistently above the critical threshold; the numbers look good.
AUGUST AERIAL PHOTOS
Dr. Dabees reported that August Clam Pass aerial photos look good. Ms. O'Brien
commented that these photos were provided to the PBSD Board last week.
BACKGROUND ON COUNTY'S REQUEST AND RESPONSE
Mr. Dorrill commented on his recent meeting with Deputy County Manager Nick
Casalanguida, Mr. Callahan, Dr. Dabees and Ms. Jacob, whereby Dr. Dabees provided a
presentation on the Clam Pass dredging timeline over the last ten years and the related explanations
for our emergency dredging events. Mr. Dorrill reported that Mr. Casalanguida stated that the
presentation exceeded his expectations, and suggested that a video of Dr. Dabees presentation be
made in order for it to be readily available when needed. The committee and Mr. Dorrill agreed
to go ahead and create a video of Dr. Dabees' presentation. Mr. Dorrill also has learned that Mr.
McAlpin, Manager of the County Coastal Management Program, will be retiring this year.
Ms. O'Brien suggested that the Clam Bay Committee "be on the same page" as staff in
regard to staff activities related to Clam Pass. Mr. Dorrill commented that Mr. Casalanguida had
requested the meeting with Dr. Dabees and staff whereby Dr. Dabees provided his draft
presentation.
POSSIBLE TALKING POINTS
Ms. O'Brien reviewed the possible talking points which were included in the agenda
packet. Ms. McLaughlin commented on the value of this information for future reference.
TIMELINE FOR DREDGING-RELATED ACTIVITIES
Ms. O'Brien commented on her request to Mr. Dorrill and Ms. Jacob (included in the
agenda packet) for a timeline of the dredging process, including recommended steps and
2
Pelican Bay Services Division Clam Bay Committee Meeting
September 10, 2019
approximate time required for each step. She suggested 13 steps and asked that Mr. Dorrill and
Ms. Jacob provide comments/edits to these steps.
Dr. Dabees commented that per the Clam Bay Management Plan, Clam Pass can only be
dredged when conditions warrant it; dredging can never be a part of an automatic cycle. He noted
that it is very difficult to estimate the completion of all the procurement steps, and these steps are
the longest part of the pre-dredge process. Ms. McLaughlin commented that when conditions
warrant a dredge event to prevent the closing of Clam Pass, this becomes an urgent emergency
project,where"the usual"procurement process cannot be adhered to. Mr.Dorrill agreed and noted
that it typically takes six months to put a project out to bid through the normal County Procurement
Dept.process and that when dredging is urgently needed,we have no choice but to ask the County
to waive the normal sealed bid process.
ADVANCED BEACH RENOURISHMENT
Ms. McLaughlin commented on a recent County informational meeting on a possible
"super beach renourishment program." At the meeting it was stated that this issue is in the first
year of a 3-year study. Ms. O'Brien commented on the "Scope of work — Park Shore beach
renourishment" document which was added to the agenda packet. This document describes an
imminent truck haul beach renourishment project for Clam Pass Park,North Park Shore, and Park
Shore beaches. Dr. Dabees commented that Mr. McAlpin has provided him with all the data
related to this proposed beach renourishment project. No sand will be placed on the north side of
Clam Pass to ensure adequate space for sand disposal in case a Clam Pass dredging event suddenly
becomes necessary (per FDEP). Mr. Dorrill commented that historically the County manages all
of the beach renourishment programs, monitors all County beach widths, and always includes
Pelican Bay in their projects when appropriate. Ms. O'Brien suggested we obtain a copy of the
County's 2019 beach survey.
Mr. Streckenbein commented that Dr. Dave Trecker, former PBSD Board member, is now
a member of the County Coastal Advisory Committee. Mr. Streckenbein commented that he is in
touch with Dr. Trecker on a regular basis; Dr. Trecker has suggested that a super beach
renourishment program for Pelican Bay beaches would cost $2 — 2.5 million. Mr. Dorrill noted
that in the past Dr. Trecker suggested that$1 million should be in PBSD reserves to cover a typical
truck haul beach renourishment program. Mr. Dorrill suggested that we may want to update our
assumptions on the appropriate amount of adequate PBSD reserves for beach renourishment
purposes.
WATER QUALITY
COPPER RESULTS
Ms. O'Brien commented that copper results continue to look great.
PHOSPHORUS LEVELS IN CLAM BAY
Ms. O'Brien commented that phosphorus levels in Clam Bay continue to be problematic.
Ms. McLaughlin commented that a new County ordinance requires homeowners to perform
nutrient tests on their soil prior to adding phosphorus to their fertilizer.
COUNTY LAB REPORTS
Ms. O'Brien commented that the County Lab has switched over from monthly reporting to
quarterly reporting for our water quality testing results. She suggested that we ask Mr. Nosbel
3
Pelican Bay Services Division Clam Bay Committee Meeting
September 10,2019
Perez, Supervisor of the County Lab, if it would be possible for us to receive monthly reports. Mr.
Dorrill will follow up with Mr. Perez. Ms. O'Brien also suggested that the committee and staff
have a conference call with Dr. Tomasko to discuss Clam Bay nutrient levels.
PO FOR WATER QUALITY REPORTS
Ms. O'Brien commented and staff confirmed that a request for quotes has been issued for
our water quality reports. Quotes are due Sept. 18.
CLAM BAY
HAND-DUG CHANNEL MAINTENANCE
Mr. Jeremy Sterk, Environmental Consultant with Earth Tech,provided a diagram of Clam
Bay which identified the areas of this year's completed hand-dug channel maintenance. He
reported that significant Hurricane Irma debris continues to be observed in the channels, and
suggested that this debris may be causing the high phosphorus levels observed in Clam Bay.
MANGROVES
Mr. Sterk provided the new infrared Clam Bay aerial photo for review by the committee.
He compared the observed mangroves from this photo to the 2017 photo, through the use of 38
grids. He noted general mangrove health improvement with minimal declines. However, "grid
#19" shows a specific area of die-off This area will be closely monitored going forward. Mr.
Sterk reported that he has identified repeatable exact locations from which to take periodic drone
photos so that mangrove health comparisons can be made over time.
SEAGRASS
Mr. Sterk reported that seagrass (predominantly shoal grass) acreage has declined slightly
to 3.53 acres. However, the seagrass is the healthiest he has ever observed.
CANOE TRAIL MARKERS 10 AND 12
Mr. Sterk reported that the County has re-installed the poles for canoe trail markers 10 and
12 and will re-install the signs for these two markers in the very near future.
SCAEVOLA TREATMENT
Ms. O'Brien commented that Mr. Sterk will work on developing a proposal for a future
scaevola removal project, to be included in a future PBSD budget.
CANOE TRAIL GUIDE
Ms. O'Brien commented that 25,000 new canoe trail guides have been printed and are
available to the public.
PELICAN BAY POST ARTICLES
Ms. McLaughlin provided draft articles on (1) the new canoe trail guide, (2) Bay Colony
beach dune swale, (3) mangrove channels, (4) the new County fertilizer & urban landscaping
ordinance, and(5)duckweed algae for the committee's review. The committee suggested that Ms.
McLaughlin include a discussion of the PBSD swale work completed in other communities, in
addition to Bay Colony, in the beach dune swale article. Ms. McLaughlin questioned whether the
fertilizer used by the PBSD contains phosphorus. Ms. Jacob will check into the level (if any) of
4
Pelican Bay Services Division Clam Bay Committee Meeting
September 10,2019
phosphorus in the fertilizer used by the PBSD. Ms. O'Brien suggested that Mr. Tim Hall proofs
these articles.
UPDATE ON MANATEE PROTECTION ZONE
Ms. O'Brien commented that the Pelican Bay Foundation was not successful in its appeal
for a designation of a manatee protection zone in Clam Bay.
NEXT MEETING:
By consensus,the committee agreed that the next meeting of the committee would be held
on Nov. 14, 2019 at 1:30 p.m.
ADJOURNMENT
The meeting was adjourned at 3:07 p.m.
Susan O'Brien, Chairman
Minutes approved [ ] as presented OR [ ] as amended ON [ ] date
5
11/1/2019 ClamPass-TIDE 1 humistonandmoore Agenda item#5a
Page 1 of 2
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https://www.humistonandmoore.com/clampass-tide 1/3
11/1/2019 ClamPass-TIDE I humistonandmoore Agenda item#5a
Page 2 of 2
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Definitions:
Mean Tide Ratio:ratio of tide amplitude of gages over the tide amplitude from the Gulf of Mexico,averaged over a month.This
ratio is representative of the pass's effectiveness in flushing water from the bay. The lower the ratio, the less efficient is
flushing,indicating material accumualting in the pass.
Mean Low Tide Lag: time difference between low tide in the Gulf of Mexico and at the gage's locations, averaged over a
month in minutes.The time lag is also represenattive of the pass's effectiveness in flushing water from the bay.The higher the
lag the less efficient is flushing,indicating material accumulating in the pass.
Background
Clam Pass is a small wave dominated inlet on the southwest coast of Florida that provides a tidal connection to 500 acres of the
wetland preserve of Clam Bay Natural Resource Protection Area(NRPA).This preserve includes several interconnected bays
surrounded by extensive areas of mangrove wetlands. The preserve is a pristine environmental resource that is collectively
known as Clam Bay.Clam Pass has gone through periods of inlet migration as well as closure,because the relatively small tidal
prism for Clam Bay provides critical balance between tidal energy and littoral process at the inlet channel.
Humiston & Moore Engineers provides professional engineering services to Pelican Bay Services Division of Collier County,
Florida for Clam Pass and Clam Bay. Humiston & Moore Engineers provided engineering services to assist Turrell Hall &
Associate in the development of the Clam Bay NRPA management plan of 1998 and the updated plan of 2014. The engineering
services included the development of design criteria for the inlet stability and conditions for maintenance dredging to maintain
hydraulic efficiency and avoid potential inlet closure including. The implementation of the NRPA management plan includes
various monitoring to maintain the health of the eco system. 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.
https://www.humistonandmoore.com/clampass-tide 2/3
Agenda item#5d
Page 1 of 2
From: Susan OBrien naplessusan-rcn com 4
Subject: Fwd:Steps and time needed to dredge Clam Pass 440
Date: November 5,2019 at 5:31 AM
To: Neil Dorrill neil@dmgfi.corn, JacobLisa Lisa.Jacob@colliercountyfl.gov
Cc: SheaBarbara Barbara Shea@colhercountyfl.gov
Hi Neil and Lisa.
I'm working on the agenda for the Nov.14 Clam Bay Comm.meeting and the Clam Bay update for the Nov.Board meeting.
Would you please send me whatever information you have to date on all the activities needed in a dredging event and the estimated length of
time for each activity.
I hanks,
Susan
begin forwarded message:
From:Susan OBrien<naplessusan@rcn.com>
Subject:Re:Steps and time needed to dredge Clam Pass
Date:September 12, 2.019 at 8:12:01 AM CDT
To:Neil Dorrill<neil@dmafl.com>
Cc:SheaBarbara<Barbara.SheaPcolliercountyfl.aov>, Jacoblisa <Lisa.Jacob@colliercountyfl.gov>
Hi Neil.
Thanks for indicating at this week's Clam Bay Comm.meeting that you would prepare what a normal sequence of events would be for a
dredging event. I hope the document will include the approximate number of days/weeks/months each activity usually takes.I would greatly
appreciate it being available by Nov.4 so it can be included with the materials for the Clam Bay Comm.meeting on November 14.
If I can provide additional information,please let me know
Thanks very much.
Susan
On Aug 27,2019,at 12:02 PM,Jacoblisa<Lisa.Jacob@colliercountyfl.gov>wrote.
Susan.
There are many variables that dictate the dredging process and timeline and your request is
not as simple or as straightforward as it may seem. For example, the time of year that the
dredging indicators say it is time to dredge may delay project implementation: it could be
Turtle Nesting Season or the Board of County Commissioners could be on their summer
recess. Because Pelican Bay Services does not budget the dollars for construction and we
need funding approval from the Tourist Development Council that also affects our timeline.
We will not have time to prepare this information for you before your Clam Bay Committee
meeting.
Lisa Jacob, MSM,CSM
Interim Operations Manager
<image003 jpg>
Pelican Bay Services Division
NOTE: Email Address Has Changed
llsa.Jac ob@c ollierc ou ntyfigov
801 Laurel Oak Drive, Suite 302, Naples, Florida 34108
Phone:239.597.1749 Cell:239.438.5239 Fax: 239.597.4502
How are we doing?
The Pelican Bay Services Division wants to hear from you!
Agenda item#5d
Page 2 of 2
Please take our online SURVEY
We appreciate your feedback!
Original Message
From: Susan OBrien <naplessusan@rcn.com>
Sent: Thursday, August 22, 2019 11 :08 AM
To: NeilDorrill <neil@dmgfl.com>; JacobLisa<Lisa.Jacob@colliercountyfl.gov>
Subject: Steps and time needed to dredge Clam Pass
H Neil and Lisa,
For the Clam Bay Comm. meeting on Sept. 10 I'd like to provide those in attendance with
the recommended steps and approximate number of days/weeks needed for each step of
the process to dredge Clam Pass.
Let's assume that the tidal and bathymetric data indicate that Clam Pass needs to be
dredged.
Below are some suggested steps. I would appreciate your editing my suggested steps,
including reordering them so they are in the right sequence, and estimating the number of
days/weeks needed for each step.
If I can provide additional information, please let me know.
Thanks very much.
Susan
1. Notify appropriate County staff.
2. Complete construction drawings.
3. Seek PBSD Board and PBF Board approval.
4. Begin required biological monitoring.
5. Submit construction drawings and other required information to FDEP and USACE for
approval.
6. Seek TDC approval for funding.
6. Work with Procurement to put specs out to bid.
7. Review bids with Procurement and select contractor to recommend.
8. Seek BCC approval.
9. Seek required local permits.
10. Establish dates for dredging event with contractor.
11. Notify all interested parties.
12. Complete dredging.
13. Complete and submit documentation required by FDEP and USAGE.
Under Florida Law,e-mail addresses are public records.If you do not want your e-mail address released in response to a public records request,do not
send electronic mail to this entity.Instead,contact this office by telephone or in writing.
Agenda item#6a
Page 1 of 1
Clam Bay Copper ug/L
Collection Date CB1 CB2 CB3 CB4 CB5 CB6 CB7 CB8 CB9 Report Date
6/22/2016 0.862 0.700 0.700 0.700 1.640 2.100 0.700 3.520 1.510 9/8/2016
7/20/2016 0.924 5.330 5.110 5.660 2.470 3.960 4.950 5.710 10.500 9/12/2016
7/20/2016 0.924 6.160 4.700 1.690 2.470 1.830 1.980 1.870 8.360 9/21/2016
8/25/2016 2.000 1.850 1.680 1.470 1.240 1.520 2.250 1.280 8.060 10/4/2016
9/20/2016 1.690 2.280 1.280 1.760 0.751 0.700 0.700 1.030 0.700 11/22/2016
10/12/2016 2.760 2.200 2.130 1.190 2.900 1.860 1.060 0.954 1.310 12/7/2016
11/9/2016 2.340 3.390 2.300 2.250 1.630 1.500 1.180 2.030 1.300 1/16/2017
12/6/2016 2.330 2.930 5.100 2.450 2.390 1.780 1.270 1.880 1.720 3/14/2017
1/19/2017 2.570 3.560 2.110 1.990 0.818 0.800 0.961 1.110 2.020 4/4/2017
2/23/2017 2.510 3.350 1.600 1.120 0.851 0.848 1.500 2.570 2.600 4/24/2017
3/21/2017 7.970 4.080 1.710 1.120 0.894 0.846 1.080 1.090 0.957 6/1/2017
4/18/2017 6.480 8.160 1.620 1.240 0.800 0.956 1.280 1.010 1.100 6/14/2017
5/24/2017 2.840 4.060 4.990 0.800 0.800 0.959 0.800 0.920 0.946 7/6/2017
6/21/2017 3.840 4.240 3.850 0.906 1.200 1.140 1.260 1.110 0.760 8/8/2017
7/13/2017 4.700 2.950 3.800 4.080 2.500 2.440 2.370 2.380 2.210 8/29/2017
8/14/2017 4.290 3.810 3.220 2.650 1.400 1.220 1.470 1.020 0.700 10/10/2017
10/4/2017 2.680 1.270 0.600 0.800 12.600 1.610 0.600 0.600 1/22/2018
11/28/2017 0.700 0.722 2.540 0.700 0.700 0.700 0.700 0.700 0.700 1/22/2018
12/12/2017 1.780 2.250 1.890 0.700 1.210 1.210 1.300 0.728 0.911 3/26/2018
1/8/2018 0.420 1.510 1.690 1.590 0.800 0.809 0.800 0.800 2.400 4/27/2018
2/6/2018 3.400 3.980 2.130 2.420 0.829 1.640 3.920 0.800 0.800 4/30/2018
3/22/2018 5.450 4.890 3.670 2.370 1.010 1.040 1.750 1.010 1.320 5/11/2018
4/4/2018 2.370 3.190 2.380 1.970 1.690 0.848 1.280 1.250 5.160 6/11/2018
5/8/2018 5.490 4.880 2.360 1.090 0.800 1.050 1.270 1.570 1.640 7/2/2018
6/6/2018 3.120 3.320 2.670 0.800 0.800 0.853 0.828 1.080 1.220 7/18/2018
7/17/2018 1.400 1.440 1.600 1.600 2.270 1.600 1.600 1.600 1.600 8/21/2018
8/15/2018 1.500 1.410 1.400 1.400 1.600 1.600 1.600 1.650 1.600 10/8/2018
9/13/2018 1.720 1.960 1.200 1.200 1.400 1.400 1.400 1.600 1.400 10/9/2018
10/15/2018 3.190 4.800 4.400 4.030 1.400 1.400 1.960 1.400 1.400 12/21/2018
11/14/2018 1.750 1.900 1.960 1.600 1.600 1.600 1.600 1.600 1.600 2/28/2019
12/12/2018 4.480 2.790 2.400 1.820 1.600 1.600 1.600 1.600 1.600 2/28/2019
1/14/2019 3.150 2.740 2.100 1.880 1.600 1.600 1.600 1.600 1.600 5/3/2019
2/25/2019 3.420 2.470 2.000 1.940 1.600 1.600 1.600 1.600 1.600 5/3/2019
3/25/2019 1.830 3.090 1.600 2.730 1.600 1.600 1.600 1.600 1.600 5/14/2019
4/11/2019 2.310 2.530 1.720 1.910 1.600 1.600 1.600 1.600 1.600 8/8/2019
5/9/2019 2.290 3.160 2.030 2.720 1.600 1.600 1.600 1.600 1.600 8/8/2019
6/25/2019 3.030 2.460 1.720 1.600 1.600 1.600 1.600 1.400 1.450 8/8/2019
7/24/2019 2.660 2.020 1.770 1.600 1.400 1.400 1.400 1.400 1.660 10/1/2019
8/8/2019 2.760 1.710 2.100 2.090 1.400 1.400 1.400 1.400 1.400 10/1/2019
9/5/2019 2.030 1.410 1.400 1.400 1.400 1.400 1.400 1.400 1.400 10/1/2019
Agenda item#8a
Page 1 of 1
FY 19 Clam Bay consulting expenses
Clam Pass
Humiston& Moore
Monthly aerial photos and tidal analysis; 12 months @$750 $9000
Annual monitoring report 9971
Annual bathymetric report 6525
Regular consulting expenses $25,496
Other
Technical report in response to County concerns re: Clam Pass dredging 18,010
FDEP permit modification 4422
Other consulting expenses $22,432
Water Quality
Turrell, Hall &Associates water quality oversight and consultation 3993
Dr.Tomasko quarterly and annual reports 21,250
$25,243
Clam Bay
Earth Tech Environmental (ETE) $46,350
Total $119,521
n.b. The data were compiled from FY19 invoices for Humiston & Moore; Earth Tech, and Turrell, Hall.
Collier County provides $150,000 each year in Fund 111 for Clam Bay expenses.
Prepared by Susan O'Brien
October 30, 2019
Agenda item#8b
Page 1 of 1
,t Tec EARTH TECH ENVIRONMENTAL
5/ 1257109
fl 10600 Jolea Avenue
{ >,� Bonita Springs,FL 34135 US
} (239)304-0030
1 www.eteflorida.com
Environmental,LLC
BILL TO INVOICE# 5205
Collier County BOCC DATE 05/15/2019
Attn:Accounts Payable DUE DATE 06/14/2019
3299 Tamiami Trail East TERMS Net 30
Suite 700
Naples. FL 34112-5749
PROJECT PROJECT MANAGER PROJECT NO.
PBSD ENV MON Jeremy Sterk Vendor 119142
PO#4500194977: PBSD(Contract No. 15-6397) Environmental&Biological
Studies for services provided in April 2019
Consulting ServicesEnvlronmental Consultant
Item 00100 GENERAL&MISCELLANEOUS SERVICES: This is a time&
materials fee type. Breakdowns shown below:
Consulting Services:Environmental Consultant 1 120.00 120.00
Meeting for dune swale permitting(Jeremy Sterk). Project Principal at$120
per hour.
Consulting Services:Environmental Consultant 2 120.00 240.00
Produce exhibits for dune swale permitting and coordinate with ABB (Jeremy
Sterk). Project Principal at$120 per hour.
Consulting Services:Environmental Consultant 1.50 120.00 180.00
Drone Grosvenor,St.Maartin,&clam bay bird rookery. (Jeremy Sterk).
Project Principal at$120 per hour.
Consulting Services:Environmental Consultant 1.50 120.00 180.00
Produce GIS exhibit for Grosvenor swale bids and send to PM. Produce
exotic bid map for 2019(Jeremy Sterk). Project Principal at$120 per hour.
Consulting Services:Environmental Consultant 1 6,000.00 6,000.00
Item 0010 MANGROVE MONITORING:This lump sum fee type is 43%
complete. Fieldwork for spring mangrove monitoring event.Broken down
according to hourly billing rates in the contract as:
Ecologist(s)@$80 per hour 75 hours)=$6,000
Total for this invoice$6,000
Lump Sum task has been billed to 43%(An additional 43%from previous
billings)
Consulting Services:En*onmental Consultant 1 560.00 560.00
Item 0090 WATER LEVEL MONITORING:This lump sum fee type is 25%
complete. Download wells and process data for first quarter event.Broken
down according to hourly billing rates in the contract as:
Ecologists)@$80 per hour 7 hours)=$560
Total for this invoice$560
"Land.water,and the environment...protecting what's important"
A 3.8%admin fee wit be applied tor all credit card payments.
Fax No.239-324-0054
Five Year Review of Clam Pass Inlet Management including Dredging Program
Active tropical seasons and storm fronts has moved the sand and thus changed the shape of
the Clam Bay channel, requiring dredging seven times over the past twenty-one years in order
to maintain the health of the mangrove forest. Collier County leaders recently asked for a
review of the Clam Pass dredging program under the 2014 Clam Bay Natural Resource
Protection Area Management Plan. Pelican Bay Services Division hired Hummiston and Moore
Engineers to conduct the study. Starting with a review of the over 500 acre site and the
historical context of the mangrove die-off in the late 1990s, and walking through the various
impacts of storms and dredging events, the review showed that the current profile for the
shape and displacement of the sand at the mouth of the pass is generally able to maintain an
open channel and a good flow of salt water.
Why do we need to dredge? It is overly simplistic to say we dredge when the Clam Pass inlet
from the Gulf closes. The dynamics of the waves, winds, tides, storms and even beach
renourishment all impact the inlet daily. Tracking these forces is important in order to keep
the water flowing productively in and out of Clam Bay.
If Pelican Bay and the rest of the development along the coastline did not exist and we did not
have broad, maintained beaches, Mother Nature would continually be creating and closing
inlets along the waterfront. Low lying beaches are impacted by floods and storms, especially
along narrow barrier islands. Water will find the lowest elevation and break through a weak
area. Decades of development removed the natural buffers of marshes like the Everglades
and mangroves. Pelican Bay's 500 plus acres of mangroves and marsh is a small, isolated,
protected natural resource managed under strict maintenance protocols and extremely
important to maintaining our beaches and protecting us from storm surge.
The Clam Pass inlet is the smallest, narrowest of the inlets along the Collier County coast, yet it
is able to flush the salty Gulf water in and out twice a day which is critical to maintaining the
health of our mangroves. We know this because we calculate the relative tidal ratios between
the Gulf as measured by the County and several remotely monitored devices at several critical
spots in Clam Bay. Fortunately, the ratio tells us that half the height of the high tide is reached
inside Clam Bay thus showing the inlet is doing its job.
Of course, high pressure fronts, wind and storms all affect the tides and waves and can move
the sand around outside the inlet, through the narrowest section and even inside at the
western edge of the channel. So, we monitor the moving sand using drones and planes and
compare the changes over time. Sometimes there are small changes, but sometimes, larger
volumes of sand are rearranged. If enough sand is moved to the wrong places, we have to
dredge. Pelican Bay maintains long-term dredging permits to prevent bureaucratic delays.
Nonetheless, we must notify the agencies and get permission to proceed. Authorization from
the Florida Department of Environmental Protection and the US Army Corps of Engineers
generally come with conditions, such as protecting the sea grass and only dredging in
authorized locations. These governmental entities want to minimize damage to the
environment and yet achieve the long-term goal of maintaining healthy mangroves.
Funding comes from the Tourist tax commission. Procurement goes through Collier County
after approval by the Board of County Commissioners. The plan in place specified by the
engineers includes details such as where the sand will be placed, how much sand will be
moved, and what shape the profile of the inlet will be in each section. Choices are made
between hydraulic dredging pumping high pressure water to move the sand and manual
steam shovel style dredging and all depends upon availability of a vendor who might be busy
in a post storm scenario. The process and the reviews of the various data elements is guided
by the Pelican Bay Services Division Clam Pass Committee headed by Susan O'Brien. This
committee's meetings are open to the public and minutes are posted on the site noted above.
The full Clam Pass 2019 Review of Inlet Management report is available at
pelicanbayservicesdivision.net. The analysis includes the evolution of inlet morphology and
effects of storm events and maintenance dredging on inlet stability. The study provides a
timeline of natural and engineering events and summarizes general findings and
recommendations. While not as exciting as a suspenseful novel, the report shows our success
in managing this unique resource and would be of great interest to environmentalists and
those who like to understand how things work.