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| Re: They have done this before |
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| Re: They have done this before |
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Posted by Walt on June 25, 2009 at 08:58:20: In Reply to: They have done this before posted by Elaine on June 25, 2009 at 00:10:27: I'm wondering if its the PCB's and not the DDT that are the target. DDT is supposed to have a half life of 22 days to 30 years and is rapidly broken down in an aquatic environment. PCB's are nastier - usual solution is to excavate the contaminated layers and treat chemically, incinerate, or use a microorganism to break them down. Covering with another layer of sand will just prolong the inevitable - the PCB contaminants will eventually pass up through this layer as well. White Point has had a fairly good kelp forest off the rocky points the last few years (thanks to the colder waters lately). Even BSB have returned. Was surprised to see the news about there being remaining contamination. Wonder if the last covering is at its life's end?
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