EPA approves product for controlling invasive mussels - SailNet Community
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post #1 of 6 Old 03-13-2012 Thread Starter
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EPA approves product for controlling invasive mussels

The U.S. Environmental Protection Agency approved Marrone Bio Innovations' dry formulation of Zequanox, a biological product for controlling invasive mussels within enclosed systems and infrastructures, the company said.

“Zequanox is the first biopesticide available for controlling invasive zebra and quagga mussels, which are crippling industrial and commercial operations by restricting water flow in heat exchangers, condensers, fire suppression systems, and service and cooling water systems, as well as by damaging other infrastructure and equipment,” Marrone Bio Innovations said in a statement.


EPA approves product for controlling invasive mussels

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post #2 of 6 Old 03-13-2012
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Re: EPA approves product for controlling invasive mussels

perhaps a good thing, depending on how and when it is used...but more likely given the expertise of the EPA, it will be more like Corexit and other "dispersants" and enzymes....they have approved over the years...only to find out that the cure is worse than the disease..

time will tell
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post #3 of 6 Old 03-13-2012
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Re: EPA approves product for controlling invasive mussels

I wonder how it's administered? Do they dump a billion gallons in the Hudson River in Albany, or must all the muscles report somewhere to be inoculated?
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post #4 of 6 Old 03-13-2012
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Re: EPA approves product for controlling invasive mussels

Please note, it says "ENCLOSED SYSTEMS" meaning, some freigters that have water in a holding tank as ballast so it sits low enough, can put this chemical in those tank to kill any mussels etc in the tank so they can then discharge the tanks closer to shore, in the GL's etc such that they will not spread invasive creatures in those area's.

I do not see where it says they cab broadcast the chemical/pesticide if you will somewhere in a river/lake etc to kill the intended target. BUT, it could have an x day/week/month residual, which in the end, could cause issues as DDT, Dursban/Diazanon etc have thru the years.

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post #5 of 6 Old 03-13-2012
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Re: EPA approves product for controlling invasive mussels

We have a power plant that uses sea water for it's turbine condensers.. they have had horrible problems with zebra mussels - they love the warm environs of the condenser tubes. To date they heavily chlorinate the intake water to kill the mussels, and then must pH neutralize the water with SO2 prior to discharging.. both nasty chemicals to handle, and bad items to spill or lose to the environment uncontrolled....

If this product is affordable AND effective it may be a good alternative all around.

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post #6 of 6 Old 03-13-2012
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Re: EPA approves product for controlling invasive mussels

Faster,

Are you sure the problem is with zebra mussels, and not some other type of mussel? Zebra mussels, such as those now found in the Great Lakes, cannot tolerate the ocean salinity level, thus, those that have washed down the Susquehanna River to Chesapeake Bay have never survived. However, there are some other forms of mussels that are similar in nature that tolerate higher salinity.

The bigger problem with any of this is the remedy is often far worse, environmentally, than the problem. For example, in the Chesapeake's upper reaches the power plant at Carroll Island once had a huge problem with entrainment of aquatic vegetation, sea worms, crabs and finfish, creatures sucked into their heat exchanger. The area in front of the plant, mainly the channel leading to the intakes, was treated with copper sulfate during the mid 1960s to kill off the grass, which also eliminated the habitat for the worms, crabs, finfish, etc... It worked. Every blade of grass from that area quickly died. Additionally, the massive volume of water pumped through the power plant circulated into the nearby waters of the Seneca River, Gunpowder River, Dundee Creek, Saltpeter Creek, and other smaller bay tributaries. The grasses died there as well. It took nearly 40 years for the grass to make a minor comeback in these areas, and some areas near the power plant have never experienced a resurgence. And, the more fragile, native species of aquatic vegetation, wild celery and eel grass, have never returned.

The smarter thing in this instance would have been to locate the power plant inland a few miles, a location where some of the water flowing down the Gunpowder River could have easily been diverted through the power plant's heat exchangers. At the time, the plant was a coal-fired facility that had the coal transported by rail to the facility. Later, when the plant converted to oil, it was transported to the facility by barge. The oil could have been transported from the Baltimore terminal by pipeline just as easily and at far lower cost.

Maybe I'm missing something, but I've never really understood the mentality of locating a power-plant along the shores of a bay or ocean, especially in an area where there are dozens of fast flowing rivers nearby that could do a far more efficient job.

Cheers,

Gary
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