Post by starfish on Mar 10, 2008 10:37:51 GMT -6
I thought this was a very informative link.
Use independent parties for monitoring - the monitoring should be done by a party "at arm's length" from the remediation contractor(s) or by the project manager. If the remediation contractor is chosen to perform the monitoring then have the work audited by a third party….
www.ec.gc.ca/etad/csmwg/pub/site_mem/en/c7_e.htm
…and this as well.
Environmental problems caused by oil from cars and trucks, leaky containers, industrial accidents, and poorly disposed of wastes are much more common cause for concern. While they don't cover vast areas of ocean with a shadowy dread, sills that contaminate dirt can eventually taint our drinking water.
The most common soil contaminants are petroleum-based. Hydrocarbons from diesel fuel and gasoline are widespread problems, as are polyaromatic hydrocarbons (PAH). Many PAHs are known carcinogens, and others are suspected problem chemicals that need to be kept from contaminating drinking water. Chemicals tend to spread through soil by diffusion and convection. Diffusion is a molecular transport that is motivated by differences in concentration. Chemicals are a lot like people, in that if you put a bunch of them in one area but there aren't many in the surrounding region they'll slowly sprawl out into the unpopulated region.
There are many methods to remove pollutants from the soil, but they don't all work for all chemicals. This makes removal a delicate process. The method must be tailored to the individual pollutant, the soil type, and the surrounding geology.
filer.case.edu/eay3/ESR/soil.htm
Use independent parties for monitoring - the monitoring should be done by a party "at arm's length" from the remediation contractor(s) or by the project manager. If the remediation contractor is chosen to perform the monitoring then have the work audited by a third party….
www.ec.gc.ca/etad/csmwg/pub/site_mem/en/c7_e.htm
…and this as well.
Environmental problems caused by oil from cars and trucks, leaky containers, industrial accidents, and poorly disposed of wastes are much more common cause for concern. While they don't cover vast areas of ocean with a shadowy dread, sills that contaminate dirt can eventually taint our drinking water.
The most common soil contaminants are petroleum-based. Hydrocarbons from diesel fuel and gasoline are widespread problems, as are polyaromatic hydrocarbons (PAH). Many PAHs are known carcinogens, and others are suspected problem chemicals that need to be kept from contaminating drinking water. Chemicals tend to spread through soil by diffusion and convection. Diffusion is a molecular transport that is motivated by differences in concentration. Chemicals are a lot like people, in that if you put a bunch of them in one area but there aren't many in the surrounding region they'll slowly sprawl out into the unpopulated region.
There are many methods to remove pollutants from the soil, but they don't all work for all chemicals. This makes removal a delicate process. The method must be tailored to the individual pollutant, the soil type, and the surrounding geology.
filer.case.edu/eay3/ESR/soil.htm