Archive for September, 2009

Public Meeting set for October 14th

Thursday, September 17th, 2009

At our request, Lycott Enviromental, Inc., has conducted a comprehensive survey of Lake Fairlee.  They are preparing a report, which will provide us with a detailed analysis of the milfoil and other plants in the lake.  This survey is also required by the State as part of an application to use an herbicide next summer, should we pursue that option.

We hope to receive the report by early October, and are eager to learn its conclusions.  We have scheduled this meeting  to share it with the public.  We have invited Lee Lyman, the founder and president of Lycott, to join us.  He will answer questions about milfoil control, about herbicide use, and about his firm.

The meeting will be held at the West Fairlee Community Center, located just to the right of Bean Hall (bright red roof) on Route 113 in West Fairlee. [MAP]  We will begin promptly at 7:00 pm and will not go beyond 9:00 pm.

New Herbicide Resource Page

Sunday, September 13th, 2009

In the summer of 2009 the Lake Fairlee Association first seriously considered the use of an herbicide to control our milfoil.  To help us decide how best to care for the lake we collected the best information we could find about what we called “the chemical alternative.”  Links to various sources are scattered through this blog, and appear in numerous posts.

To make it easier to find this information we have created a new resource page, where we will collect these links.  You can find this page at the top of the right column of this blog, under ‘Pages,’ where it is called Herbicide Resource, or you get there by clicking HERE.

In addition we have recently added a new “Category,” also in the column on the right, under “Milfoil Erradication,” called “Herbicide.”  Click that link to see an archive of every page related to the question of chemicals in the lake.

A (very relevant) Science Lesson

Friday, September 11th, 2009

As we grapple with the difficult decision whether to use chemicals in Lake Fairlee, we are confronted by more than a few complicated questions.  Much of the information is not easy to understand.  We are grateful when we find one that clarifies the issues.

Here is a web-based presentation, in which aquatic herbicides are used to demonstrate scientific concepts regarding herbicide toxicity, persistence in the environment, dosage, mode-of-action, carcinogenicity, bioaccumulation and other public concerns.  It is called:

Why Aquatic Herbicides Affect Aquatic Plants and Not You!

The video was made by Professor Carole A. Lembi, of the Department of Botany and Plant Pathology at Purdue University.  Her laboratory has studied a number of issues integral to aquatic plant management, particularly those that deal with finding more ecologically-friendly alternatives to herbicides/algicides.

Please do not be deterred by the length (30 minutes) and academic tone of this presentation.  Make time to watch it.  Your understanding of the issues we face will certainly be increased.

Making sense of difficult information

Thursday, September 10th, 2009

On August 31 we held an informational meeting to discuss our board’s decision to proceed towards herbicide treatment of Lake Fairlee next summer (2010).  We reminded all attending that we take seriously our role as stewards of the lake, and that the decision to hire an outside consultant to conduct an initial survey was made reluctantly and after considerable discussion.  We emphasized that we (board members) are not scientists, and are struggling to learn all we can about chemical treatments and alternatives.

There is an abundance of information available about the herbicide triclopyr.  (Ann Bove would remind me here that we are not assured of getting a permit for herbicide application, and we don’t even know which herbicide will be recommended)  Only a little of it is original research – most simply summarizes scientific data collected by others.  This information is available from a various different sources, and often reaches a variety of conclusions.

Most of the published scientific research on triclopyr was conducted by the manufacturer (Dow Agrosciences) pursuant to their EPA registration.  This is unfortunate, but typical.  Research is expensive, and most easily funded by a large company with an expectation of future profits.  Most of the information about triclopyr found on the web is based on this original data, digested and explained for non-scientists.

One contributor to the meeting suggested that we look at a website called “pesticide.org,” which contains a factsheet about the herbicide triclopyr, and that we include a link to it in this blog.  As promised, I include the link HERE.  I feel compelled to add few words of caution.

The pesticide.org website is maintained by the Northwest Coalition for Alternatives to Pesticides [NCAP].  This is an outfit dedicated to reducing pesticide use, and “keeping [us] informed about pesticide hazards . . . .”  We applaud their mission, and agree that pesticides are overused and sometimes dangerous.  Nonetheless their “factsheet” on triclopyr seems selective in its choice of facts, and slanted in its conclusions.  The facts it includes are true, but they are chosen selectively.

The pesticide.org factsheet was written in 2000.  The formulation of triclopyr we are considering was not released until later, and arguably is a safer formulation.  Renovate 3 contains the triethylamine salt of triclopyr, and references to the butoxyethyl ester of triclopyr in the factsheet may not be applicable.

In this blog I have tried to include links to sources that are understandable and reliable.  I have also looked for sites that are balanced.  The “Triclopyr Questions and Answers” from the State of Washington (LINK) is a good example. I can understand how someone who is vehemently against all use of chemicals might see this as slanted in favor of chemical use, just because it does not conclude that using triclopyr is always bad.

I remind all concerned that none of us wants to introduce an herbicide into the lake.  We agree that it would be preferable to find a non chemical alternative.  We believe that we have exhausted all other available alternatives, and that doing nothing would be unacceptable.  We examine each choice asking, “What is best for the lake?”  The wishes of our members and donors can be taken into account, but the welfare of the lake is our first concern.

I urge each reader to scrutinize these resources, and others, and to come to her own conclusions.

Newspaper coverage of August 31 meeting

Monday, September 7th, 2009

The September 2nd issue of the Bradford Journal Opinion contained the following article:

Lake Fairlee moves closer to chem treatment

by Alex Nuti-de Biasi
THETFORD–Just over a month after advocates with a Lake Fairlee advocacy group said they were considering a chemical treatment to combat a Eurasian milfoil infestation, board members of the Lake Fairlee Association told a public gathering on Monday night that they are now moving forward with plans to seek a permit from the state to apply a herbicide next summer. The move represents a shift from the prior practice of removing the invasive weed by mechanical and manual means.

It is estimated that about 10% to 20% of the 457-acre lake is impacted by milfoil, which was first discovered in the lake in 1995. Since then a battery of methods, including hand pulling by divers, bottom barriers and suction harvesters, have been used in an attempt to contain the weed.

But despite those efforts, LFA board members say they are no longer able to keep the milfoil under control. Milfoil can grow to form dense mats near the surface of the water that makes swimming, boating and other recreational activities near impossible in infested areas. Additionally, it can crowd out and kill off native aquatic plants.

The limited effectiveness of non-chemical treatments have forced lakeside property owners to consider alternative methods despite some objections from those.

“Each of us are admittedly anti-chemical in that it is not our first step,” Skip Brown told attendees at the informational meeting at Ohana Camp on Aug. 31. Brown is the LFA’s milfoil program director. He said board members have had “heated discussions” about resorting to herbicidal treatment in an effort to control milfoil, but have been assured by state regulators that certain herbicides are safe for both humans and wildlife.

Ann Bove, a biologist with ANR’s water quality division, said that Vermont is very strict in the permitting process and collaborates with the Department of Health to prevent risks to sensitive populations such as children and women of a child-bearing age. At a meeting last month she said risks to humans are minimal when the chemical is applied consistent with directions and she added that triclopyr, the chemical used in Lake Morey to combat milfoil, breaks down very quickly. (more…)

Divers Ending Season Early

Friday, September 4th, 2009

This year we had to pull the divers out before Labor Day.  With milfoil still growing strong we were loathe to do it, but the money just was not there.

Here are some photos I took last week as they were relocating sheets of bottom barrier.

Oak begins pulling a sheet of bottom barrier

Oak begins pulling a sheet of bottom barrier

Folding bottom barrier sheets

Folding bottom barrier sheets onto the boat

Divers hand a piece of rebar up to Oak on the boat

Divers hand a piece of rebar up to Oak on the boat

AJ and Leon taking gear off

AJ and Leon taking their gear off

Thanks, guys, for another season of dedication and hard work!