MSNBC:
The explanation by the Obama team is the same one put forward time and time again by Bush officials: The sites on the list have become increasingly complicated, contaminated and costly. That means it takes years for sites to reach the final cleanup stage, and as a result fewer are getting there.
Was involved in the Superfund program for a couple years. And yeh, I'd agree that the low hanging fruit is pretty much gone. Here's a quick graph that lays out the problem:
The first thing that has to happen is to figure out how contaminated the ground is, and where the chemicals might be going. Answers to these questions involve a lot of research, digging around, and soil sampling.
After a few years a couple of cleanup options usually emerge. These are sent to the EPA (or state environmental quality folks) for their OK. The public usually has a say in the decision too. There's also a legal determination at that point as to how much the polluter (or polluters, if several industries contaminated the same place) is going to pay, and how much money EPA and other agencies are going to need to oversee the cleanup. Budgets get submitted, plans get approved, and work finally begins.
Once the cleanup officially starts the toxics in the soil often drop off relatively quickly. In real terms this could mean a decade or more, but there is steady progress. But eventually less and less stuff comes up out of the ground.
It's sorta like a coffee spill on your carpet. Most of the liquid comes up right away, and pretty cheaply. Maybe just a couple paper towels. But there's still that stain and coffee odor to contend with. That may require renting a carpet steamer or hiring an expensive cleaning service. The closer you want it to "like new" the more you will have to pay to get it there.
How clean does it need to be? What would drive that decision? Usually the answer is related to how the carpet is used. Is it a rug that you were going to eventually toss out anyway? Or maybe it's smack in the middle of your dining room. Likewise, is the contaminated soil located in an industrial area? Or will a school or hospital or neighborhood be built on it? Maybe it's an industrial area, but the spill is adjacent to a city water supply.
Regardless of who's running the White House these sites are getting tough, no question. So I won't ping Mr. Obama for that. My biggest objections are twofold. First, it looks as though the current administration plans to come back (once again) to taxpayers instead of the polluters for the additional cleanup money. And second, aside for the excellent work being down with Brownfields redevelopment, I think too many green interests want sites perfectly clean regardless of the cost.
UPDATE: Got a nice note from Tim Wheeler after visiting his article about homebuilding in sensitive areas around Baltimore. He noted a concern about toxics coming from "capped" sites.
An option EPA has agreed to at some sites is called "monitored natural attenuation." In plain english, MNA means keeping tabs on the site while letting the bugs in the soil finish the cleanup. It's a pretty good option for petroleum and some solvent spills. But it only works in narrow circumstances, when the source of the original spill (the tank, the chunk of contaminated soil) is considered gone. Here's EPA's guidebook on it.
Sites gets capped when it's safe to do so and when the costs of further cleanup outweigh the public health/safety benefits. That's not to say MNA is free. The cost of monitoring a site can be in the millions of dollars a year for decades. Some will disagree, but my experience working with these regulators is that the "what is safe" decision is made with a lot of care and public dialog. And keep in mind that every government dollar spent on a cleanup is one pulled from other areas of public and environmental safety. Or pulled from your pocket.
The cost-benefit decision is also a temporary one in my view. Two reasons. Once the cost of not cleaning it up outweighs the cost of MNA, somebody will come up with the money. As property values rise in California and the D.C. area for instance, sites that were once considered too costly to clean up are getting fresh infusions of cash from developers willing to bear the expense up front to gain the financial rewards. And on the other end there are Fortune 500 engineering firms out there working on cheaper, more effective (i.e. profitable) ways to clean up sites.
Want to know more? Restoration advisory boards meet regularly and are a great way to plug into local environmental issues. Here's the list of upcoming events for New England. Check the paper this weekend or google around to find out what your local RAB is doing.
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