We thought you might be interested in this column on several myths told about hydraulic fracturing. A sample: "Those who oppose the practice say that chemicals in fracking fluids can pollute water tables that lie just a few hundred feet or less below the surface. In rock formations like the Marcellus shale, a deposit in the Northeast that underlies parts of New York, Pennsylvania, Ohio and West Virginia, fracking takes place well below 7,000 feet and solid rock separates the shale deposits from shallow groundwater aquifers. The buffer makes contamination from fracking virtually impossible. In addition, the wells being drilled are constructed with at least four thick layers of steel casing and concrete such that they are cemented in place to create a solid divider between gas production and the fresh water aquifers."
