As the entries on
this blog have described, soil contamination is a big problem, and a dangerous
one at that. We have learned several ways that we can prevent soil
contamination. But how exactly can you tell if soil is contaminated?
Soil
contamination can often be somewhat obvious. For example, if you can see paint
chips embedded in the soil, and the paint is known to contain lead, the soil is likely contaminated. Other indications
that the soil may be contaminated include obvious discoloration and strong
odors. These are all signs that the soil is likely hazardous. Another, granted less reliable,
clue of possible soil contamination is the failure of vegetation to
thrive in a particular area of soil.
However, this also depends on the type of vegetation and whether or not
the soil type would be suitable for growth even if the soil were not contaminated.
The
above signs are simply that, just clues that may indicate soil contamination.
The only surefire way to tell if soil is contaminated is to perform a certified
laboratory test on a sample of the soil.
A thorough testing of any area of soil can be very costly. However, testing
for the three most common soil contaminants, lead, arsenic and cadmium, can be
done for as little as $100.
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