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Troubled Treasure…Receives Much Needed Attention

River Journal wrote a cover article entitled “Troubled Treasure” in June, concerning the smaller of the Tarrytown Lakes. It was being overrun with algae and milfoil grasses. For the past two weeks workers from Aquatic Analysts in New Jersey have been removing the milfoil. We asked Village Administrator Richard Slingerland to describe what took place after our June reporting.

Photo: Raking and harvesting milfoil.

On August 9 he responded.

When did the Board agree to start this method of controlling the milfoil? Date?

The issue was discussed with the Board at the July 11th Work Session and they agreed to do the mowing this year.  Since itRaking and harvesting milfoil. was below the threshold for a public bid, I was able to proceed without the need for a Board award.

What dollar amount has been allotted for the dredging/harvesting of the grass? From what fund does that money come from?

Dollar amount for the dredging/harvesting is approximately $25,000. The money will be paid from the Parks Maintenance Account.

Last harvesting of milfoil in the Lake was 12 years ago under former Mayor, Paul Janos. Were you a part of that project?

Since the last lake harvesting was 12 years ago, I was not working for the Village of Tarrytown at that time.

What is the goal of the harvesting and how frequently (annually, or greater) will it be performed?

Mounds of milfoil grass at Tarrytown Dump (Before)The goal of the harvesting is to allow the herbicides and anti-growth compounds and dyes to have the chance to work more effectively in the upper small lake.  We will regroup next year to see how things go.  We are taking out very large quantities of weeds and algae.  Depending on how it goes, we may seek to recommend to the Board a future harvesting, or an effort to perform “hydro-raking” as Aquatic Analysts calls it, to remove the weeds and large portions of their root systems, which would last longer than the weed harvesting.

What is the total time in hours allotted to this project?

Total time allotted for this effort is this week and next week, depending on how quickly the materials are harvested, collected, and trucked away from the lake.  Right now it seems we’re handling about 25 smaller dump truck loads each day.

Anything else you feel is relevant, please add?

The process of harvesting and removing bio mass is one of an array of options that came up at a Lake Management WorkshopMounds of milfoil grass at Tarrytown Dump (After) that the County hosted last year at the Westchester County Center, which Cathy Ruhland as Lakes Committee Chair, Anthony Ross as Parks Foreman and I attended, to perform research and find better methods of maintaining the lakes.

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