Minutes 10/03/2017 PELICAN BAY SERVICES DIVISION
CLAM BAY COMMITTEE MEETING
OCTOBER 3,2017
The Clam Bay Committee of the Pelican Bay Services Division met on Tuesday, October 3 at
10:00 a.m. at the SunTrust Bank Building, 801 Laurel Oak Drive, Suite 302, Naples, Florida
34108. In attendance were:
Clam Bay Committee Bohdan Hirniak (absent)
Susan O'Brien, Chairman Gary Ventress
Pelican Bay Services Division Staff Mary McCaughtry, Operations Analyst
Neil Dorrill, Administrator Lisa Jacob, Associate Project Manager
Marion Bolick, Operations Manager (absent) Barbara Shea, Recording Secretary
Also Present
Jennifer Bobka, Earth Tech Mike Shepherd, PBSD Board
Mohamed Dabees, Humiston& Moore Jeremy Sterk, Earth Tech
Tim Hall, Turrell, Hall &Associates Dave Trecker, PBSD Board
APPROVED AGENDA (AS AMENDED)
1. Roll call
2. Agenda approval
3. Approval of 06/08/17 meeting minutes
4. Audience comments
5. Clam Bay
a. Condition of mangroves
b. Water level logger data
c. Hand-dug channel maintenance
d. Other updates
6. Clam Pass
a. Update on current conditions
b. September tidal ratio report
c. Bathymetric surveys and findings
d. Dredging Clam Pass
7. Water Quality
a. Sediment report
b. Copper results
c. 2°' quarter report on TP and TN
d. Adding water clarity to WQ parameters
e. WIN data entry
f. Water quality sampling August& September (add-on)
8. Annual reports—due December 15, 2017
a. Clam Bay monitoring
1
Pelican Bay Services Division Clam Bay Committee Meeting
October 3,2017
b. Water Quality—due 30 days after October WQ results reported
c. Bathymetric and tidal monitoring
8A. Clam Pass Park update (add-on)
9. Next meeting: January 4
10. Adjournment
ROLL CALL
Mr. Hirniak was absent and a quorum was established
AGENDA APPROVAL
Mr. Ventress motioned, Ms. O'Brien seconded to approve the agenda as amended,
with the addition of items #7f and 8A. The motion carried unanimously.
APPROVAL OF 06/08/17 MEETING MINUTES
Mr. Ventress motioned, Ms. O'Brien seconded to approve the 06/08/17 meeting
minutes as amended. The motion carried unanimously.
AUDIENCE COMMENTS
None
CLAM BAY
CONDITION OF MANGROVES
The committee reviewed before (August 22) and after (September 19)photos of the Clam
Bay mangroves, provided by Humiston and Moore, to assess the damage from Hurricane Irma.
October 2 aerial photos, taken by Earth Tech, were also reviewed. Mr. Hall commented that
"replacing mangroves" is FEMA reimbursable.
WATER LEVEL LOGGER DATA
Mr. Sterk provided water level logger data through the prior week, and commented that
the Clam Bay system has easily handled various summer rain events, and drainage has improved
in comparison to last summer. He reported that logger #3 is "down" as a result of the hurricane
and will be reinstalled. Ms. Jacob reported that canoe marker #12 has been uprooted and needs
to be reinstalled.
HAND-DUG CHANNEL MAINTENANCE
Mr. Sterk commented on comparison photos (March & June) of Clam Bay hand-dug
channels; the next inspection will be in early November. He commented that additional funds
may be necessary for additional channel clean-up resulting from Hurricane Irma. Near-term
attention is needed to clean out debris and fallen trees from these channels. Mr. Hall commented
that only mangrove debris in the channels should be removed. Mr. Dorrill commented that staff
will follow up on the suggested near-term clean-up work. Ms. Bobka commented that although
the mangroves show leaf loss and stress, she has observed minimal mangrove mortality.
After committee discussion of the lack of"plots" in the Irma-impacted area, Mr. Sterk
agreed to come back to the committee with new proposed plots for monitoring the Irma-impacted
areas.
2
Pelican Bay Services Division Clam Bay Committee Meeting
October 3,2017
OTHER UPDATES
Mr. Sterk reported on his pre-hurricane observations of considerably reduced acreage of
seagrass in the southern end of Clam Bay, most likely a result of poor pre-dredge conditions.
CLAM PASS
Dr. Dabees provided a post-hurricane update on the conditions in Clam Pass. He noted
increased sand deposits in Sections B & C resulting from the storm surge. He suggested a survey
of Sections B & C to document the storm's impact. He reported that 9000 yards of sand was
removed from the inlet during the summer dredging project; 2944 yards of sand was deposited
on the Pelican Bay beach.
Ms. O'Brien commented that we are due to obtain a bathymetric survey to fulfill the
Clam Bay Management Plan's requirement of an annual survey. Mr. Dorrill commented that the
cost of the survey, including analysis, is approximately $6,500.
Ms. Jacob suggested that the PBSD Board considers including the cost of annual
maintenance dredging in future PBSD budgets. Dr. Dabees suggested that the PBSD budget
include "dredging reserve funds" to address any future dredging emergencies. Dr. Trecker
commented that per the Clam Bay Management Plan, certain conditions must exist in order to
start the planning process of a Clam Pass dredging event. He suggested that the PBSD Board
consider internal funding for"maintenance dredging."
WATER QUALITY
SEDIMENT REPORT
Mr. Hall commented on his April 2017 Clam Bay Sediment & Surface Water Copper
Analysis Report included in the agenda packet, highlighting high copper levels in the sediment in
the north end of Clam Bay. Dr. Trecker provided a document (which was added to the record)
entitled, "Sediment measurements in Clam Bay" which provided his conclusions on the THA
report including (1) there is an enormous amount of copper in the sediment, (2) the ratios of
water/sediment copper are very similar in the three bays, and (3) the copper in both the sediment
and water column is highest in Upper Clam Bay and lowest in Outer Clam Bay. He commented
that one cannot assume that improved "flushing" in the Clam Bay system would improve Clam
Bay copper levels.
Dr. Trecker also provided documents (which were added to the record) on phosphorus
data in Clam Bay and Pelican Bay lakes during 2016 & 2017. He suggested that the high levels
of phosphorus in the Vizcaya lake and Laurel Oaks lake may be contributing to the high
phosphorus levels in Upper Clam Bay.
COPPER RESULTS
Ms. O'Brien commented that copper levels in Clam Bay remain "about the same" as
reported in the nine site copper table, updated through July.
SECOND QUARTER REPORT ON TP AND TN
Mr. Hall reviewed the 2nd quarter Tomasko report on TP and TN (included in the agenda
packet), highlighting the problematic phosphorus levels in Clam Bay. The 3rd quarter report
should be available shortly.
ADDING WATER CLARITY TO WO PARAMETERS
3
Pelican Bay Services Division Clam Bay Committee Meeting
October 3,2017
Mr. Hall recommended adding water clarity to WQ parameters; water clarity data may
show that Clam Bay nutrient levels are sourced from the sediment. He suggested using a Secchi
disk to obtain water clarity data. Staff will follow up on the status of Secchi disk training by
selected PBSD personnel.
WIN DATA ENTRY
Mr. Hall reported that the County is in the process of changing their lab management
system, and currently is not producing "adapt reports"which are used for input into WIN.
WATER QUALITY SAMPLING AUGUST & SEPTEMBER(ADD-ON)
Mr. Hall reported that (1) August samples were not adequately preserved at the County
Lab as a result of a reported loss of refrigeration in the lab; Mr. Hall recommended discarding
these samples, (2) August copper results will be provided by the County Lab, (3) as a result of
Hurricane Irma, no samples were extracted in September. Mr. Dorrill and Mr. Hall agreed that
THA would obtain October samples for water quality testing.
ANNUAL REPORTS
Committee members, consultants, and staff reviewed due dates of annual reports
including, (1) the Clam Bay monitoring report and the bathymetric and tidal monitoring report
are due on Dec. 15, and (2) the water quality report is due 30 days after the October WQ results
are reported.
CLAM PASS PARK UPDATE (ADD-ON)
Ms. Jacob reported that the Clam Pass Park boardwalk was damaged by Hurricane Irma
and is closed indefinitely (to trams and pedestrians). The County has hired an engineer to
evaluate the boardwalk for safety purposes.
NEXT MEETING:
By consensus, the committee agreed that the next meeting of the committee would be
held on December 7 at 1:30 p.m.
ADJOURNMENT
The meeting was adjourned at 11:55 a.m.
Susan O'Brien, Chairman
Minutes approved [ ' ] as presented OR [ ] as amended ON [ '7 ] date
4