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Corps will turn up barrier

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In response to the report released last week about finding DNA evidence of Asian farther upstream in the Sanitary and Ship Canal than expected, the U.S. Army Corps of Engineers will announce this morning a planned increase in the operating parameters for the electric fish dispersal barrier near Romeoville.

Here's the gist of the basic announcement.

The U.S. Army Corps of Engineers will host a press conference at 11 a.m. on Wednesday, August 12, 2009 to announce a planned increase in the operating parameters for the electric fish dispersal barrier in the Chicago Sanitary and Ship Canal near Romeoville, Ill. The barrier is designed to deter the passage of invasive species, especially Asian carp, between the Great Lakes and Illinois River watersheds.

The press conference will take place at the Chicago Harbor Lock, 108
North Streeter Drive, Chicago (on the river just south of Navy pier).

In addition to the Army Corps, participants will include representatives
from U.S. Fish and Wildlife Service, Illinois Department of Natural
Resources, and the U.S. Coast Guard.

The Corps of Engineers made the decision to increase operating
parameters based on the latest, best information available, including results
from preliminary genetic water testing obtained July 31st which indicate that
Asian carp are closer to the barrier than previously thought. Recent research
undertaken at the Corps of Engineers research laboratory indicates that the
optimal operating parameters are two volts per inch, 15 Hertz frequency and
6.5 milliseconds pulse rate.

To prepare the barrier for the increase, the Corps of Engineers will
begin operational testing of the equipment at 8 a.m. Wednesday, August 12,
2009. Operational testing is expected to be complete by Friday, August 14 but
will continue until barrier preparation is finalized. In coordination with
the Coast Guard, the Army Corps will begin navigation safety tests at the new
operating parameters as early as practicable. The timing of the increase is
tied to the barrier contractor's ability to change the parameters in a safe
manner.

"Once we received the genetic testing results on July 31st, we
immediately began making preparations to be able to increase the operating
parameters," said Maj. Gen. John Peabody, commander of the Corps of Engineers
Great Lakes and Ohio River Division. "The earliest we could make the changes
was this Friday, so we used the available time to consult with other state
and federal agencies and partners. It is clear to us that this is the
appropriate action."

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This page contains a single entry by Dale Bowman published on August 12, 2009 8:36 AM.

More on Northerly Island pacu: Red-bellied was the previous entry in this blog.

Corps and electric barrier: More info is the next entry in this blog.

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