PBSD MSTBU Clam Bay Committee Agenda 03/07/2019 PELICAN BAY SERVICES DIVISION
Municipal Service Taxing and Benefit Unit
NOTICE OF PUBLIC MEETING MARCH 7, 2019
THE CLAM BAY COMMITTEE OF THE PELICAN BAY SERVICES DIVISION WILL
MEET AT 1:30 PM ON THURSDAY, MARCH 7 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 01/03/19 meeting minutes
4. Audience comments
5. Water Quality
a. Annual Water Quality Report*
b. Copper results and detection limits
6. Clam Pass
a. February tidal ratio report
b. February aerial photos
c. Data on dredging events and erosion near Clam Pass from 1999 to present
7. Clam Bay
a. Contract for monitoring
b. Hand-dug channel work
c. Scaevola work in FY20
i. Using grant funds
ii. Requesting funds in FY20 budget
d. Canoe trail markers 10 & 12
8. Draft of FY20 Clam Bay budget
9. Next meeting: May 9
10. Adjournment
*The 2018 Clam Bay Water Quality report is posted on the PBSD website. A hard
copy will be made available upon request.
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.
02/27/2019 11:26 AM
PELICAN BAY SERVICES DIVISION
CLAM BAY COMMITTEE MEETING
JANUARY 3,2019
The Clam Bay Committee of the Pelican Bay Services Division met on Thursday, January 3 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 Bohdan Hirniak (absent)
Susan O'Brien, Chairman Rick Swider
Pelican Bay Services Division Staff Mary McCaughtry, Ops. Analyst (absent)
Neil Dorrill,Administrator Lisa Jacob, Assoc. Project Manager
Marion Bolick, Operations Manager (absent) Barbara Shea, Recording Secretary
Also Present Tim Hall, Turrell, Hall &Assoc.
Jennifer Bobka, Earth Tech Jeremy Sterk, Earth Tech
Mathew Fleming, Humiston& Moore
APPROVED AGENDA (AS PRESENTED)
1. Roll call
2. Agenda approval
3. Approval of 11/08/18 meeting minutes
4. Audience comments
5. Clam Bay
a. ETE annual report
b. Update on stressed mangroves near PBF north boardwalk
c. Photos of rookery
d. RFQ for Clam Bay monitoring
e. Canoe trail marker 12
6. Clam Pass
a. H&M annual bathymetric and tidal analysis report
b. November tidal ratio reports
c. December aerial photos
d. Upgraded modems and sensor repair for tidal gauges
e. H&M draft of response to concerns about dredging
f. Lead time for dredging decision to avoid BCC emergency action
7. Water quality
a. Copper results
b. Proposal for analyzing TP results from past decades
8. Annual Reports
a. Water Quality due February 15, 2019
9. Next meeting: Feb. 7 or March 7
10. Adjournment
1
Pelican Bay Services Division Clam Bay Committee Meeting
January 3,2019
ROLL CALL
Mr. Hirniak was absent and a quorum was established
AGENDA APPROVAL
Ms. O'Brien motioned, Mr. Swider seconded to approve the agenda as presented.
The motion carried unanimously.
APPROVAL OF 11/08/18 MEETING MINUTES
Mr. Swider motioned, Ms. O'Brien seconded to approve the 11/08/18 meeting
minutes as amended. The motion carried unanimously.
AUDIENCE COMMENTS
None
CLAM BAY
ETE ANNUAL REPORT INCLUDING UPDATE ON MANGROVE HEALTH
Mr. Sterk, Environmental Consultant with Earth Tech, commented on the ETE 2018
Annual Clam Bay Monitoring and Management Report, which has been posted on the PBSD
website. The agenda packet included the report's three-page summary. Comments by Mr. Sterk
included:
1. The mangrove health assessment scores indicate a recovery from the negative effects of
Hurricane Irma and are now showing an upward trend. (A chart of the scores from 2016-October
2018 was reviewed by the committee.)
2. There has been an increase in scaevola (beach naupaka), an exotic invasive species,
within the coastal scrub habitat in Clam Bay. In the past, scaevola removal was not included in
the exotic invasive removal projects. Mr. Sterk will work on providing a plan and proposal for
scaevola removal for possible inclusion in the PBSD FY2020 budget. Mr. Tim Hall,
Environmental Consultant with Turrell, Hall, & Assoc., suggested exploring the availability of
grant funds for this project.
3. It is recommended that additional mapping of the CB hand-dug channels be included in
the scope of services for the next Clam Bay monitoring contract.
FUTURE CLAM BAY PRESENTATION/WORKSHOP
Committee consensus was to hold a Clam Bay PBSD workshop or provide a presentation
at a future PBSD Board meeting, with our consultants, to provide information to our residents on
Clam Bay, Clam Pass,the health of our mangroves, and dredging events.
SHOREBIRD MONITORING
Mr. Hall suggested that shorebird monitoring be performed as needed for a specific
dredging event.
PHOTOS OF ROOKERY
Not discussed
RFQ FOR CLAM BAY MONITORING
2
Pelican Bay Services Division Clam Bay Committee Meeting
January 3,2019
Not discussed
CANOE TRAIL MARKER 12
Mr. Sterk reported that canoe trail marker 12 has been removed; canoe trail marker 10 was
downed from a recent wind event and taken to the canoe launch area. Mr. Dorrill commented that
staff will explore the cost for the PBSD to reinstall these two markers.
CLAM PASS
H&M ANNUAL BATHYMETRIC AND TIDAL ANALYSIS REPORT
Ms. O'Brien commented that Humiston & Moore's 2018 Clam Pass Physical and Tidal
Monitoring Report has been received and posted on the PBSD website. She commented that Clam
Pass is currently in good shape. Mr. Mathew Fleming, Environmental Consultant with Humiston
&Moore, commented that H&M continuously monitors the flushing efficiency of Clam Pass and
the amount of material that has drifted back into the system. He suggested that the current lack of
erosion on the south side of Clam Pass has kept the system healthy.
NOVEMBER TIDAL RATIO REPORTS
Not discussed
DECEMBER AERIAL PHOTOS
The committee reviewed the December Clam Pass aerial photos.
UPGRADED MODEMS AND SENSOR REPAIR FOR TIDAL GAUGES
Mr. Sterk commented that the sensor probe will be replaced on tide gauge #4, and the
modems for the tide gauges will be upgraded at the same time.
H&M DRAFT OF RESPONSE TO CONCERNS ABOUT DREDGING
Ms. O'Brien commented on a document/table added to the agenda packet entitled "Clam
Pass Dredging"which documents the history of dredging events back to 1999,including data such
as cubic yards of sand removed,type of equipment,and dredge cut width at Section"A." Mr. Hall
commented that his firm has the historical data of Clam Pass dredging events back to the 1970s.
Mr. Fleming suggested adding "Clam Pass widths" as an additional column to the table. It was
agreed by the committee and Mr. Dorrill that H&M and Ms. McCaughtry would add any
information they have to the table,to be brought back to the committee for additional review. Ms.
O'Brien suggested that this data be included in Dr. Dabees' report on "concerns about dredging"
as requested by the County.
Ms. O'Brien commented that further discussion on how to avoid a future emergency
dredging event is needed. Mr. Fleming commented on recent discussions by H&M consultants on
alternatives for stabilizing Clam Pass in order to return to a 3 to 4-year dredging cycle.
LEAD TIME FOR DREDGING DECISION TO AVOID BCC EMERGENCY
ACTION
Ms. O'Brien emphasized that the PBSD needs to do a better job at lengthening the dredging
event lead time and avoiding a BCC emergency prior to a dredging event.
WATER QUALITY
3
Pelican Bay Services Division Clam Bay Committee Meeting
January 3,2019
COPPER RESULTS
Ms. O'Brien commented that the most recent monthly copper results were the best ever.
Mr. Hall commented that the County Lab has increased the amount of dilutions on the samples,
which increases the minimum detection limits. Mr. Hall will follow up with Mr. Nosbel Perez,
County Pollution Control Laboratory Supervisor, to determine whether the dilution coefficients
can be reduced.
PROPOSAL FOR ANALYZING TP RESULTS FROM PAST DECADES
Ms. Jacob commented that an analysis of total phosphorus as documented over the past
few decades would be included in the next RFP(request for proposal)for water quality monitoring.
Mr. Hall commented that he thought there would be value in looking at the trend in the Clam Bay
phosphorus data collected over the past few decades.
Ms. Mary Johnson commented on a recent FGCU study conducted at Little Harbour (a
small community in Naples)which determined that approximately 50% of the phosphorus in their
lakes was sourced from the water table.
ANNUAL REPORTS
WATER QUALITY REPORT DUE FEBRUARY 15, 2019
Not discussed
NEXT MEETING:
By consensus,the committee agreed that the next meeting of the committee would be held
on March 7, 2019 at 1:30 p.m.
ADJOURNMENT
The meeting was adjourned at 3:10 p.m.
Susan O'Brien, Chairman
Minutes approved [ 1 as presented OR [ 1 as amended ON [ 1 date
4
Agenda item#5a
Page 1 of 1
Notes on 2018 WQ annual report
COPPER
• 10 of 108 samples exceeded the FDEP standard in 2018. Thus copper is not out of compliance
with the FDEP standard, and Clam Bay is not "impaired"for copper.
• 70%of samples that exceeded the standard were at Stations 1, 2, & 3 in Upper Clam Bay.
• Recommendation from report: explore possible causes of elevated copper in Upper Clam Bay
COPPER IN BERM SITES
• 23 of 65 samples (35%) at the six sampling sites along the berm exceeded copper criteria for
Class III fresh water bodies. 14 of these 23 exceedances were at the north boardwalk and north
berm sampling sites.
TOTAL PHOSPHORUS
• 67 of 108 samples (62%) exceeded allowable limits in 2018.
• 33 of 98 samples (34%) exceeded allowable limits in 2017.
• 19 of 107 samples(18%) exceeded allowable limits in 2016.
• In 2018 the number of exceedances at each sampling site ranged from 4 to 11 so TP exceedances
were found throughout Clam Bay with the highest rates of exceedances in July, August, and
September when all 9 sampling sites exceeded allowable limits. Last year Dr. Tomasko
speculated that the bird rookery in Upper Clam Bay may be contributing to the high levels of TP.
This year Dr.Tomasko is postulating that the impact of Hurricane Irma and the work done in May
and June 2018 to clear the hand-dug channels of Irma-related debris and to reestablish the
channels to their original width and depth may be contributing to the high levels of TP.
• Recommendation from report: closely monitor TP levels so conditions do not become a long-
term condition.
DISSOLVED OXYGEN
• 11 of 106 samples (10.4%) had levels lower than existing guidance criteria from FDEP, slightly
higher than the 10%allowed by FDEP, in 2018.
• 13 of 98 samples (13%) had levels lower than existing guidance criteria from FDEP, slightly higher
than the 10% allowed by FDEP, in 2017
• 6 of 108 samples (6%) had levels lower than existing guidance criteria from FDEP, lower than the
10%allowed by FDEP, in 2016.
TOTAL NITROGEN
• 15 of 108 (14%) samples (14%) exceeded the upper limits, less than the allowable 16%so TN is
not out of compliance in 2018.
• 3 of 98 samples (3%) exceeded the upper limits in 2017.
• 4 of 107 samples (4%) exceeded the upper limits in 2016.
SUGGESTIONS
• Consider reporting copper results for the 6 berm sampling sites in a table in quarterly WQ
reports.
• Consider reporting TP results for the 6 berm sampling sites in a table in quarterly WQ reports.
Prepared by Susan O'Brien
February 26, 2019
Agenda item#5b
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
humistonandmoore f ClamPass-TIDE Agenda item#6a
Page 1 of 2
CLam Pass Tide Monitoring- Click here for Maintenance Dredging Project details
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https://www.humistonandmoore.com/clampass-tide 3/1/2019
I
humistonandmoore I ClamPass-TIDE Agenda item#6a
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 Lao'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 3/1/2019
Agenda item#7a
Page 1 of 3
QUOTE 15-6397-3—SPECIFICATIONS
CLAM BAY MONITORING AND MANAGEMENT
Purpose and objectives:
The overarching goal of the Clam Bay NRPA Management Plan is to establish the basis for management
activities that will be undertaken to protect the health of the Clam Bay Natural Resource Protection Area
(NRPA)estuary. Referenced documentation about the Clam Bay NRPA Management Plan,Clam Bay permits,
annual reports,exhibits,maps,and other information is posted at:
http://pelicanbayservicesdivision.net/rfg3clambavactivities.html.
The purpose of this request for service is:
1. Maintain and protect the native floral and faunal communities
2. Ensure estuary has adequate tidal and freshwater flows to maintain ecological health
3.Maintain water quality
4. Monitor archaeological sites
5. Ensure recreational activities are environmentally compatible
Scope of Services:
Bul-s--BASE BID—Provide pricing for three(3)years(L095 days)for tasks 1 — 11 in the compensation schedule
below and sum the totals in line 12. The quote will be awarded to the responsive quoter.with the lowest line
9-r 12 total.
Task I -Mangrove monitoring(Lump Sum)
• Bi-annual monitoring(March&September)of at least twenty-one(21)existing plot locations and
et")1'— shall include drone aerial photos of the mangroves and bird rookery(see ETE 2018 Annual
i`t {'a Report,Figure 3).
• Observations,data,and recommendations from this task should be included in the annual report
(Task XI).
• Annual infrared(CIR)and RGB aerial photograph of the Clam Bay NRPA(see Figure 2)in
accordance with FDEP Permit No. 11-0128463-005,Special Condition No. 13.Contractor shall
provide electronic files and one(1)print of each type sized 36"x72".
Task II-Exotic and nuisance vegetation monitoring(Lump Sum)
• Annual inspection of NRPA(see ETE 2018 Annual Report,Figure 2)including berms,
boardwalks,and waterway areas to identify Category I and II invasive plant species as defined by
the Florida Exotic Pest Plant Council.
• For the purposes of obtaining exotic and nuisance vegetation removal quotes,contractor shall
provide Project Manager with a GIS map of identified areas where Category I and II invasive plant
species arc found and recommend methods and frequency for treatment and removal(see ETE
2018 Annual Report,Figures 10-11).
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
1): ', 7G1,sk's undertj ,,
RFQ 15-6397—3
Page 2 of 4
Agenda item#7a
Task III -Coastal Scrub and Cabbage Palm Hammock monitoring(Lump Sum) Page 2 of 3
• Annual monitoring of four(4)existing plots(see ETE 2018 Annual Report,Figure 4).
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
Task IV-Seagrass monitoring(Lump Sum)
• Annual monitoring of six(6)existing transects(see ETE 2018 Annual Report,Figures 5-7).
• Observations,data,and recommendations from this section should be included in the annual report
(Task Xl).
Task V-Protected species monitoring(Lump Sum)
• Annual identification of floral and faunal species and associated habitats(see ETE 2018 Annual
Report,Tables 3-4).
• Annual identification of gopher tortoise burrows(see ETE 2018 Annual Report,Figures 8-9).
• Obtain Collier County sea turtle nesting data from appropriate County division.
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
Task VI-Recreational facilities monitoring(Lump Sum)
• Bi-annual inspection of 32 canoe trail markers(see ETE 2018 Annual Report,Figure 17)and inform
Project Manager of any damages.
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
Task VII-Archaeological sites monitoring(Lump Sum)
• Annual inspection of three(3)archaeological sites for signs of disturbance(see ETE 2018 Annual
Report, Figure 18).
• Observations,data,and recommendations from this section should be included in the annual report
(Task X1).
Task VIII-Hand-dug channels mapping,inspection,&maintenance(Lump Sum)
• Contractor shall complete the GIS mapping of all existing hand-dug channels
• Annual pre-clearing(March)and post-clearing(April or prior to start of rainy season)inspections of
existing hand-dug channels(see ETE 2018 Annual Report,Figures 13-15).
• For the purposes of obtaining quotes for maintenance clearing work,Contractor shall provide
Project Manager with a map of troubled areas.
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
Task IX-Water level monitoring(Lump Sum)
• Quarterly monitoring of three (3)groundwater level devices at existing well point locations(see
ETE 2018 Annual Report,Figure 12). Devices shall be provided and maintained by contractor.
• Obtain site-specific rainfall data from Club Pelican Bay
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
RFQ 15-6397—3
Page 3 of 4
Agenda item#7a
Page 3 of 3
Task X—Tidal Gauges Station Maintenance (Lump Sum)
• Twenty(20)trips annually as needed to four(4)tidal gauges stations(see Tidal Gauges Stations
map)to maintain equipment,reset modems,check or replace batteries,clean solar panels,etc.
Probes at each station should be removed on a quarterly basis for cleaning then reinstalled
promptly.
• Observations,data,and recommendations from this section should be included in the annual report
(Task XI).
Task XI-Annual Clam Bay monitoring report and presentation(Lump Sum)
• Provide annual Clam Bay monitoring report to Project Manager by December 15 of each year.
• Prepare and present to the PBSD Board an annual Clam Bay monitoring report detailing the state of
the system for the monitoring period.
Compensation:
Task Description Unit of Measure Price
1 Mangrove Monitoring Lump Sum $
2 Exotic and Nuisance Vegetation Monitoring Lump Sum $
3 Coastal Scrub and Cabbage Palm Hammock Monitoring Lump Sum $
4 Seagrass Monitoring Lump Sum $
5 Protected Species Monitoring Lump Sum $
6 Recreational Facilities Monitoring Lump Sum $
7 Archaeological Sites Monitoring Lump Sum $
8 Hand-dug Channels Inspection and Maintenance Lump Sum $
9 Water Level Monitoring Lump Sum $
10 Tidal Gauges Station Maintenance Lump Sum $
11 Annual Clam Bay Monitoring Report and Presentation Lump Sum $
12 Total $
ALTERNATE BID -Provide a time and materials amount in line 13 for three (3)years for the various services
described below.The price entered in line 13 is not included in the award formula.
Task XiI-General and Miscellaneous Services(Time and Materials)
• General consulting and related services as requested.
• Attendance at monthly PBSD Board and Committees meetings,and/or Board of County
Commissioners' meetings as requested.
• Coordination of permitting activities to include pre-application meetings,application preparation
and submittals,and post-issuance reporting.
• Monitoring activities in excess of the number of included events.
Alternate Bid:
Task Description Unit of Measure Price
13 General and Miscellaneous Services Time and Materials $
RFQ 15-6397—3
Page 4 of 4
Agenda item#8
Page 1 of 1
DRAFT
FY 20 Clam Bay Budget
Current contracts and estimated costs
$212,250' ETE Clam Bay monitoring and annual report
32,0002 THA Water quality monitoring and quarterly and annual reports
9,000 H&M Monthly tidal analysis reports and aerial photos of Clam Pass
10,000 H&M Annual bathymetric &tidal analysis report
6,500 H&M Annual bathymetric survey
18,500 County Lab Water quality sample collection, and analysis, and WIN entry
? ? Hand-dug channel maintenance
31,000 ? Exotic treatment
? ? Scaevola treatment
2,000 Verizon Transmittal of data from tidal gauges
800 Locher Web hosting for tidal gauges
TBD Reserves for contingencies
TBD Tax collector fees
TBD Property appraiser fees
? Project manager salary and benefits3
? Equipment repairs
? Other
n.b. $150,000 available in County's 111 Fund
FY18 fund balance will be available by March 31, 2019; estimated fund balance is$115,244.
FY19 fund balance needs to be estimated before FY20 assessment is determined
1 Includes $36,000 for T&M
2 Includes $8200 for T&M
3 45%of salary/benefits in FY19 charged to Clam Bay
Table 1.Representation of frequency of impairment for TP for different site and date combinations. Green
represents samples in compliance with criteria. Red cells indicate exceedance of criteria. Red cells with
an "X" represent values that are within 5% of criteria concentrations,suggesting lack of compliance
should be interpreted with caution, due to analytical precision. Clear cells represent a lack of data.
II
Sampling Station
Event 1 2 3 q 5 6 7 8 9
Mar-15
Mar-15
Apr 151
--r-
May-15
Jun-15
Jul-15I
Aug 15
Sep 15
Oct-15 ... L.
Nov-15 I
Dec 15
I_. -,
Jan-16 (
Feb 16I I
Mar 16 I
1..0 i t) Apr-16 I
May-16
Jun-16
Jul-16 1---
II)
Aug-16 I
Sep 16
Oct-16 F
;
Nov-16
Dec-16
1
Jan-17 ,:-
Feb-17
:,,ZC 11
Mar 17
Apr-17 r
May 17
`z",
---
Jun-17
Jul-17
g __
Au 17 ^__ __
Oct-17
Nov-17 ,
Dec-17 i ! i
Jan-18
Feb-18 [
Mar 18
Z d V Apr-18
May-18 is
Jun 18
Jul-18 P b
Aug-18
Sep-18
Oct-18
"No more than 10 percent of the individual Total Phosphorus (TP)
or Total Nitrogen (TN) measurements shall exceed the respective
TP Upper Limit or TN Upper Limit.'
The Upper Limits for TP and TN concentrations noted above are derived based on Equations 1 and 2,
respectively:
(-1.06256-0.0000328465'Cond uctivity(ps))
Equation 1: TP Upper Limit (mg/L)= e
Equation 2: TN Upper Limit (mg/L)= 2.3601 —0.0000268325*Conductivity(PS)
The nutrient dataset examined was supplemented with in situ water quality data (e.g., temperature,
dissolved oxygen, pH, conductivity, and salinity) retrieved from the chain of custody forms for each
sampling event. TN and TP concentrations were compared to the derived upper limit thresholds to
quantify the presence or absence of elevated concentrations of TP and/or TN, with results listed in
(Appendix A).
Over the period analyzed (November 2016 to October 2017), a total of three (3) ambient water quality
values for TN exceeded the respective TN Upper Limit, for an exceedance frequency of approximately
3 percent. In comparison, 33 of the 98 TP measurements (approximately 34 percent) exceeded their
respective TP Upper Limit. Based on these results, the frequency of exceedance would not be high
enough for the waters of Clam Bay to be determined to be impaired for TN, but those same waters
would be determined to be impaired for TP.
Table 1 displays the results in a manner intended to allow for a quick visualization or results by month
and by station. Sampling locations and months are color coded as to the results, with green
representing "passing" values, boxes with an "x" representing data that numerically exceed established
criteria. In addition, boxes in yellow represent values within the error rate (i.e., + 5 percent) of threshold
criteria, whether in exceedance, or slightly below exceedance. .
Table 1. Representation of frequency of impairment for TN and TP for different site and date
combinations. Green represents sample clearly not out of compliance with criteria. Boxes with
"x" represent values out of compliance with criteria. Boxes in yellow with "x" represent data
out of compliance, but within the range of resolution of laboratory values (i.e., ±5 percent)
and/or rounding errors. Boxes in yellow but without "x" represent values in compliance, but
also within range of resolution of laboratory values (Le., ±5 percent) and/or rounding errors.
Clear cells represent a lack of data.
1 2 3 4 5 6 7 8 9
Month TP
TN TP TN TP TN I TP TN TP TN TP TN TP TN TP TN TP TN
Nov-16 x ' x f l
Dec 16 1
Jan-17
Feb-17 x x x x
x
Mar-17 x x x x
Apr-17 x x x x x t
May-17 x x x x x x x I x—
Jun-17x
x X
_ t
Jul-17
Aug-17 1
Sep-17
Oct-17 1 x x ! x x xx ( x x
6
liter. In contrast, the copper standard for freshwater is more complicated, as it requires the concurrent
recording of a value for"hardness" in units of mg CaCO3/ liter. The toxicity of copper is mostly
restricted to the abundance of the copper ion, and the greater the abundance of other dissolved
compounds, the lower the probability that free copper ions will be available to bind with cell
membranes, etc. and cause direct and indirect biological impacts. Briefly stated, the higher the
hardness level of a water sample, the lower the probability that a given level of copper will be toxic.
Once the level of hardness is determined, the copper criterion for a sample collected from freshwater is
derived as:
Copper standard (mg / liter) = e(°8545[InH}1 702)
Where:
e =the base of the natural logarithm (ca. 2.718281), and
InH = natural log of hardness (in units of mg CaCO3/ liter)
Thus, the determination of whether a sample meets or exceeds the water quality standards for copper
only requires determination of the concentration of copper for marine samples; a concurrent value for
hardness is required to determine compliance with freshwater criteria. In the data set examined it
appears that there were 65 date and location combinations where freshwater stations were sampled
(Table 6).
Table 6. Copper values at Stormwater Pond Sites, in units of pg / liter. Values highlighted in
yellow exceed copper criteria for Class lIIF waters. Grey cells indicate no data available.
Date Glenview PB-11 St Lucia PB-13 N-Boardwalk N-Berm
11/29/2017 5.8 13.2 13.6 14.5 27.6 13.7
12/27/2017 38.2 16.6 73.2 15.5 39.1 19.0
1/8/2018 13.7 40.4 23.4 288.0 17.0
2/6/2018 11.4 17.7 30.3 25.5 48.4 53.9
3/22/2018 15.7 8.5 7.7 20.1 30.6
4/4/2018 24.4 6.4 78.4 17.0 24.4
5/8/2018 21.3 7.3 13.5 34.6
6/6/2018 19.7 3.7 9.7 12.1 7.6 17.5
7/18/2018 11.2 89.8 7.2 5.4 10.1
8/15/2018 9.3 5.1 5.8 3.1 11.0
9/13/2018 29.1 13.0 8.4 10.6 20.0 20.1
10/15/2018 15.2 9.6 1.7 9.5 10.9 8.1
Copper concentrations at all sites exceeded the hardness-normalized copper criteria for Class III
freshwater systems during at least one monitoring period. Typically, levels of copper were many times
higher than impairment thresholds. The N-Berm and N-Boardwalk locations had higher exceedances
rates than the other sampled locations. These stations are located within the series of open water
features on the west side of the Pelican Bay development,just east of the mangrove fringe that
separates Clam Bay from its developed watershed.
16
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