Archive for the ‘Management’ Category

2009 Grant Report

Thursday, November 5th, 2009

[what follows is a portion of the report we file each year with the Vermont DEC as a condition of their grant in support of Lake Fairlee's milfoil program]

Summary of Program Activities

Even from our first look at the lake in the late spring, the milfoil grew aggressively this year.  We continued to employ the same methods we have used for the past several years, but were able to remove less milfoil this year than last.  This was primarily caused by two factors.  First, we faced declining funding from both private donors and from our State grant, which allowed us to employ the divers for three weeks less than last year.  Second, more than half of our 2008 dive crew did not return, and our progress was impeded by the need to replace several crewmembers during the season.

During the summer it became apparent to many of us that this year the milfoil seemed to be out of control to an extent not previously seen.  We are aware that this can be due to numerous factors, including cyclical population fluctuations, variation in sun and water temperature from year to year, as well as the effects of our harvesting program.  We began a series of meetings with owners and other interested parties to consider the possibility of using an herbicide to treat the milfoil in Lake Fairlee.  After consultation with the State, we invited two companies licensed to chemically treat Vermont lakes to come look at our problem and give us their recommendations.  This led to our decision to employ Lycott Environmental, Inc., to conduct a comprehensive survey of aquatic species in the lake.  At the time of this report we are working with Lycott to prepare an application for a permit to use triclopyr in Lake Fairlee late next spring.

The attached map shows the lake, and areas where we employed the following methods this year.

Hand pulling was employed at many locations around the lake.  A total of 361 divers’ “catch” bags were filled and removed.  Each bag holds slightly more than one cubic foot, but they are filled under water, and not packed as densely as the material which is suction harvested.  In any case, this amounts to more than 13 cubic yards of milfoil removed.

Suction harvesting was also employed at several locations.  A total of about 1230 cubic feet, or about 45½ cubic yards, was removed.  See the section titled “Amount of Milfoil Harvested” for discussion of how this was calculated.

Bottom barriers were moved in late August this year.  Again this year limited resources required us to lay off our divers before we wanted to, leaving some barriers in place for a second season.

Disposal:  This year one of our divers had written a business plan and received a mini-grant to demonstrate of how harvested milfoil might profitably be composted and sold as fertilizer.  For most of the summer he hauled the milfoil three miles to a field where it was allowed to compost.  After work he would tend the compost piles, checking their internal temperature and turning them.  He had intended to package the product in 50 lb. bags, but in the end he sold the entire quantity to a local farmer for use on his fields.  For the first few days and last few weeks of the season we disposed of the milfoil as we had in previous years, by piling it across State Route 244 from the boat ramp.  As usual, local gardeners and farmers removed it for use in their gardens almost as fast as it accumulated.

Program detail

This year the dive crew worked from May 18th through September 3rd.  They worked Monday through Thursday every week, including Memorial Day.  Only occasionally did the weather or their equipment keep them from their primary activities, and they took advantage of those opportunities to perform maintenance and catch up with other support tasks.

Volunteers provide the administrative backbone of our operation.  Members of the Board of Trustees have taken on significant operational responsibilities, in addition to their management role.  The Treasurer did hours of office work including handling incoming mail, making deposits, managing the payroll, and filing tax and employment records.  The Milfoil Program Director met with the divers several times each week to review progress and plan strategy.  He drafted the grant application and the requests for permit modifications required by the State.  He also created the educational “blog” on the Association’s website.  Another trustee took responsibility for the Greeter program, which educates boaters entering and leaving the lake at the State boat ramp.  Some undertook the significant fundraising required to support our effort. This requires letter writing, stuffing, and mailing, and individual solicitations.  Finally other trustees managed an annual membership dinner and a benefactors’ cocktail party to thank and cultivate our supporters.  In the face of the controversial decision to explore the “chemical option,” trustees stepped up and  took leadership roles in the ensuing discussions.

This year funding from the state decreased, as did support from local residents and friends.  This might be attributed in part to the economy.  It is also certainly due to the disaffection of those members who have decided that we ought to be seeking to use chemicals because our present methods are not doing the job.

Many people donated in-kind services, including the use of boats, equipment storage, and office equipment.  These are detailed in a later section.

Our equipment inventory can mostly be best described as “well used.”  Fortunately the dive crew is experienced and competent with field repairs, and seems to be able to keep the aluminum boats afloat with duct tape and epoxy, and the outboards running without the help of outside mechanics.  We continued to have trouble with our outboards this year, which slowed down our operation on more than one occasion.  This ought not be a surprise, considering their age and condition. We made improvements to the pontoon boat, which we use for both suction harvesting and bottom barrier operations.  Our bottom barriers and silt screen are still serviceable.

Our supplies consisted mostly of air tank refills for the divers and gas and oil for the boats.  There were also a few trips to the hardware store and the marine supply for hardware and rope and repair parts.

A much more detailed explanation of many of our program activities can be found on our blog at http://lakefairlee.org.  There one can find greater detail about the mechanics of our suction harvesting and bottom barrier operation as well as photographs of the lake and of the divers at work.

Consultant’s Report Now Available

Wednesday, October 7th, 2009
Click here to download report

Click above to download report

The Lake Fairlee Association Board has received the Aquatic Vegetation Report prepared by Lycott Environmental, Inc., and has begun to discuss its implications.  This report will be the subject of our third public meeting, to be held on Wednesday, October 14th. (details here)  You can download the whole report HERE.  It is a pdf file and is eighteen pages long.  We invite you to read it so that you will better understand our deliberations.

This report is the result of several surveys of the lake conducted this summer.  It includes scientifically collected data from over 200 locations around the lake, including the kinds and density of various species, and particularly of Eurasian milfoil.   It concludes that “approximately 120 acres, or about 26% of the lake’s surface area is infested” with Eurasian milfoil.

What this report does NOT include are recommendations about what we should do.  In private conversations the consultant has said that our lake is a good candidate for herbicide treatment.  But the decision is ours.  If we decide to apply for a permit for next summer the details of our proposal will be hammered out with the State regulators.  We will be continuing to explore this possibility, gathering information about what the treatment would consist of, how long it might take, and what it would cost.

Please read the report and come to one of our public meetings.  The lake may be “owned” by the State of Vermont, but it is our lake, and it needs our care.

How Grows the Milfoil This Year?

Friday, May 29th, 2009

On Tuesday, May 26th, I joined the dive crew for a thorough survey of the lake.  We spent about two hours circumnavigating the lake on the pontoon boat, occasionally with a diver in the water for closer inspection.

This year, even though the ice went out mid April as usual, we had a week or two of unusually warm weather in early May.  Consequently the milfoil seems to have gotten an early start.  During the winter it “lies down” and goes dormant.  In the spring when the sunlight reaches it on the bottom it begins to grow.

A patch of milfoil

A patch of milfoil

It is hard to get a good photo of milfoil from above the surface. For that matter it is not easy underwater either. In a future post I will try to include some underwater shots.

As usual the milfoil has some surprises for us. In some locations where we have wiped out whole patches using bottom bottom barriers or suction harvesting the milfoil has not returned, and the local pondweed and other species are returning. In others the milfoil has taken root again. The purpose if today’s tour is to gather information so that we can plan this summer’s activities intelligently.

Dive Program Report — 2008

Saturday, September 20th, 2008

It took the better part of their first week for the divers to remove the boats from winter storage, make necessary repairs, and launched.  During this week they retrieved from Rutland a new (used) boat trailer I found on craigslist and received an additional (donated) skiff.  They also replaced the entire deck of the pontoon boat with new marine-grade plywood and welded additional supports on it and reinforced the new trailer so that it could handle the increased weight of a boat laden with wet milfoil.

By May 20th they began diving.  Until late June they are prohibited by the terms of our permit from using the (more efficient) suction harvester, so they were hand picking.  Because the suction harvester can only be used where the milfoil has achieved 10% saturation, they chose locations to hand pick where the milfoil plants are widely scattered, or mixed with abundant local lake weeds.  In late May they picked along the Quinibeck shore, near Lochearn point, and on the north side of Passumpsic point.  They focused on patches adjacent to owners’ docks.  Then they cleaned up the swim areas at Lochearn, Aloha Hive, and Treasure Island in anticipation of campers’ arrival.

Once the suction harvester could be used, the divers focused on the western shore of the north lobe of the lake, from Treasure Island down to Passumpsic point.  Our strategy is to clean out an entire shore of the lake, and this was a manageable choice.  We feel that it is a more effective use of our resources to concentrate the picking in one area rather than removing the same amount of milfoil from various areas around the lake.

Anticipating an early end of the season due to insufficient funding, the divers turned in the last week of August to moving bottom barriers.  Although it might seem simple, both the taking up and laying down the barrier sheets require skill and patience and are fraught with difficulties.  First two divers lift the lengths of epoxy coated rebar off a strip (6 ft. x 100 ft.) of barrier material and hand them up to the pontoon boat for storage.  Then the end of a strip is hooked on the front of the pontoon boat and the boat gently backs over the strip, peeling if off the bottom and trailing it in the water.   Finally the two divers on the deck of the boat pull the plastic in and fold it accordion style on the deck.  Laying it down is pretty much the reverse.  The sheet is trailed behind the slowly moving boat, and “flown” down to its destination on the bottom by two divers in the water.  Placement is critical: each sheet has to overlap its neighbor by about a foot and a half.  Then each sheet is “burped” – trapped air is squeezed out from under – and pieces of rebar are placed every dozen feet or so along the top.  More than a little wind can slow the process considerably, both lowering visibility beneath the surface and making precise maneuvering of the pontoon boat difficult.  (click on the photo above for more pictures and a better explanation)

In November we are required to file a detailed report of our activities with the state.  At that time I will post specifics of the amounts of milfoil removedand bottom bariers relocated here.

Deciding Where the Divers Work

Saturday, June 7th, 2008

Frequently we are asked, “When will the divers be working in my area?”

Although this seems to be a simple question, a proper answer requires some understanding of Lake Fairlee’s milfoil problem and some of the constraints under which our program works. First, Lake Fairlee belongs to the State of Vermont, not to the lake residents nor to the towns in which it is situated. What our divers do to combat milfoil is subject to permits issued by the State, as well as being partially funded by a State grant. Therefore Vermont has quite a bit to say about how and where we remove milfoil.

The state pays for almost half of the milfoil program. Another 10% is provided by the three towns, and the rest by contributions from LFA members. Some lakefront property owners are able to be exceedingly generous, while others contribute nothing at all. We do not, however, make decisions about where to pull milfoil based on who gives and who doesn’t.

There is much more milfoil growing in the lake than our divers can remove in a season. They are limited by the length of the season and the amount of money that the foundation can raise. They are not allowed to begin suction harvesting nor deploy bottom barriers before the end of fish spawning season. Before the middle of May or so the milfoil is dormant, and “lying down.” In October the days get shorter and the water gets colder, but by then we have run out of money anyway. In recent years we have raised enough money to keep four divers and a boat person working until about the end of September. We hope to be able to do at least that well this year. These considerations all impact our choices.

THE DIVERS MEET IN THE MORNING TO PLAN THE DAY’S WORK

We make our decisions where the divers work based on the needs of the lake as a whole. We develop a plan early in the season based on a complete survey of the milfoil in the lake. We decide where suction harvesting and bottom barriers can be used to best effect, and make application to the State for those locations. This early plan frequently has to be changed as the extent of the milfoil evolves. Nonetheless these major decisions significantly affect each day’s choices.

Then each day we decide where to work, based on this ‘master plan’ and on the lake conditions that day. Generally we prefer to focus on one area until it is completely clear of Eurasian milfoil before moving on. Sun and wind can affect visibility under water, and can change from morning to afternoon. Planning deployment of our resources is an important and complicated process.

On the other hand, there are many areas of the lake that want our attention. Deciding between several similar patches can be a toss up. So it is only after weighing all these factors that the varying generosity of our contributors be considered.