When Pepco wants to cut down a tree, it looks to detailed requirements mandated by state law.

In 2011, Maryland passed the Electricity Service Quality and Reliability Act, which required state regulators to impose stricter standards for reliability and enforce new mandates on utilities. Those regulations went into place in 2012.

The new regulations set standards for everything from the frequency and duration of outages and customer communication to downed wires and vegetation management the pruning and removal of trees.

Marylands Tree Expert Law which has been on the books since 1945 and a 1914 Roadside Tree Law, which regulates trees in the public right of way, also are taken into account when utilities prune trees.

Between 2010 and 2012, Pepco looked at all of the trees around its entire system, said Pepco Senior Staff Forester Dan Landry.

Now, it trims on a four-year cycle part of the new regulations, he said.

Even though the time span is longer, the change in law leads to more of the tree being removed.

A four-year cycle means the tree will be pruned so it takes four years for branches to grow back in the clearance zone, Pepco Region Vice President Jerry Pasternak said.

Pepco is in its first four-year cycle, Landry said, so there are places in the county where it just pruned trees two or three years ago and is back again.

Trees respond aggressively to pruning, Landry said. They grow much faster the first and second year after theyre pruned. Then, the growth slows down.

See the article here:
Maryland rules govern tree cutting

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PDF (13 MB) of Power Point presentation on buckthorn eradication (given at IPAW meeting in Milwaukee in Dec. 2011)

History

When restoration work began at what is now Pleasant Valley Conservancy, the area was heavily infested with undesirable woody vegetation, both brush and trees. The original savanna oaks and hickories were still there, with their open-grown character visible, but surrounded and crowded with "bad" woody plants. The invaders were all fire-sensitive and had encroached during the 50 or so years since the last burns.

Early attempts to knock back the invasive woody plants by fire were unsuccessful, as there was insufficient fuel on the ground. In retrospect, fire should not have been used at that stage anyway, since all it would do was top-kill the woody plants, but not eradicate them. They would resprout from dormant buds and a bigger mess would be created. We were thus "lucky" that fire did not work.

Herbicides for weed control

Herbicides play a central role in restoration ecology, but they must be used carefully and with full knowledge of their potential activities. Each herbicide sold comes with a label that provides essential information about the chemical, its activity, and precautions that must be taken when using it. It is mandatory that before using any herbicide its label must be read and understood.

Uses of herbicides for specific weeds and woody plants are given below and on other pages of this web site. This link provides a summary of the main herbicides used at Pleasant Valley Conservancy.

The correct approach to removal of woody invasives:

Cutting woody plants: sprouters and nonsprouters

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Brush and Tree Removal - Pleasant Valley Conservancy

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