PBSD MSTBU Minutes 10/18/2012 Landscape Subcommittee Imalumm
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JAN 0 2 12
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LANDSCAPE WATER MANAGEMENT SUBCOMMITTEE MEETING MINUTES
THURSDAY,OCTOBER 18,2012
LET IT BE REMEMBERED that the Landscape Water Management Subcommittee of the Pelican Bay
Services Division Board met on Thursday,October 18 at 1:00 p.m.at the Community Center at Pelican Bay,
8960 Hammock Oak Drive,Naples,Florida 34108.The following members were present:
Landscape Water Management Subcommittee
Tom Cravens, Chairman Geoffrey S.Gibson
John Chandler absent Dave Trecker
Keith J.Dallas
Pelican Bay Services Division Staff
W.Neil Dorrill,Administrator Mary McCaughtry,Operations Analyst
Kyle Lukasz,Operations Manager Lisa Resnick,Recording Secretary
Seven in audience
Fiala ✓
AGENDA Hiller ✓
Henning 1/1
1. Roll call Coyle /
2. Possible alternatives for use of copper sulfate to control algae/duckweed 77„.
3. Landscaping best management practices(BMP)
a. Pelican Bay Services Division employees utilization of BMP
b. Pelican Bay community outreach regarding the importance of BMP
4. Audience Comments
5. Adjournment
ROLL CALL
With the exception of Mr.Chandler,all Subcommittee members were present.
POSSIBLE ALTERNATIVES FOR USE OF COPPER SULFATE TO CONTROL ALGAE/DUCKWEED
Chairman Cravens explained that algae and duckweed grow in fresh water bodies in Pelican Bay and there
are instances where duckweed will become so prolific that it will cover the entire surface,depleting oxygen and
sunlight killing plants and other organisms. The method of choice because of its cost-effectiveness is copper sulfate.
However there is evidence of copper impairment in both fresh water lakes and in Clam Bay and the goal of this
Subcommittee is to address the problem which is caused by excessive and improper use of fertilizer.
Mr.Lukasz explained that the Services Division uses copper sulfate primarily to control algae;and Reward
(Diquat)to control duckweed.He presented alternative methods to using copper sulfate in the freshwater lakes
including introducing bacteria;introducing bacteria in conjunction with aeration to increase levels of dissolved
oxygen and reduce nutrients and algae blooms;applying herbicide(Hydrothol);and installing sonar technology
which physically breaks up algae,but was not recommended.
Mr.Lukasz recommended using bacteria in conjunction with aeration and littoral plantings. Staff could
implement in fresh water lakes in Basin III to test effectiveness of reducing nutrients and algae blooms.Also,
electric power for aeration is available in Basin III and would not require purchasing and installing more costly
solar-powered aerators.
The Subcommittee agreed with Mr.Lukasz'recommendation to test the effectiveness of introducing
bacteria with aeration and littoral plantings in Basin III fresh water lakes;directed staff to research Ine cost,
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Landscape Water Management Subcommittee of the Pelican Bay Services Division Board
October 18,2012
including pre and post bacteria water quality monitoring of nutrient and copper levels;and the cost to monitor
nutrient and copper levels in all fresh water lakes communitywide. The Subcommittee would recommend this to the
full Board on November 7.
Mr.Dallas suggested that prior to implementation in the lakes to inform the abutting associations.
LANDSCAPING BEST MANAGEMENT PRACTICES(BMP)
PBSD EMPLOYEES' UTILIZATION OF BMP
Chairman Cravens observed that although PBSD employees were trained and certified in landscaping
BMP,employees do not utilize landscaping BMP in the field.
PELICAN BAY COMMUNITY OUTREACH REGARDING THE IMPORTANCE OF BMP
The Subcommittee discussed developing a video or publication to educate residents about the importance
of landscaping BMP;monitoring nutrient levels of the Services Division's fresh water lakes and maintaining a
separate database from the Foundation.Chairman Cravens and Dr.Trecker would draft separate proposals to discuss
at the next Subcommittee meeting.
PRESENTATIONS
Vice Chairman Cravens presented photographs of the south berm restoration project and information about
white fly ficus infestation,treatments,and alternative plantings.
ADJOURNMENT
Dr. Trecker made a motion,second by Mtr.Dallas to adjourn. The Subcommittee voted unanimously in
avor and the meeting was adjourned at 236 p.m.
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Tom Crave , hairman Minutes by Lisa Resnick 10/24/2012 1:07:16 PM
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