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The soil is a complex mixture made up of minerals, organic matter, water, and other substances. The soil, in its original state, was a natural, uncontaminated material that covered the earth. In some places, however, humans have accidentally or intentionally poured toxic substances onto the soil, thereby paving the way for a variety of health problems for animals, plants, and humans. Professionals conduct different testing methods such as ASTM D6550 to determine the soil contamination rate.