The local impact on areas with hydraulic fracturing has been largely stifled across the U.S. mainly because mineral rights of the land and corporate law over people. What happens in Michigan is people own the land but not the rights to the oil & mineral content of their land. The DNR sells leasing rights to the oil & minerals and the DEQ gives license to those who purchased the lease. People all over MI are getting letters notifying residents that this is taking place and they can do nothing about it. After working for the DNR I found this is a touchy issue because it directly negates their mission statement.
Summary of May 8, 2012 DNR oil & gas lease auction: http://www.michigan.gov/documents/dnr/MAYSUMMARY_385851_7.pdf
Sanilac County Permit: http://www.michigan.gov/documents/deq/Permit_59112_MSDS_388278_7.pdf
If you look at these two differences in approach between DNR and DEQ they are suggesting that it is ok for the environment. However, they clearly state that because of the highly toxic chemicals used approximately 5,000,000 gallons of water is “injected into deep rock layers isolated from fresh water supplies” after their use i.e. will not enter the water cycle again for 100’s years if not more because the toxicity is so severe. The idea that this is an environmentally safe practice is a joke.
DNR site link on fracking
DEQ site link on fracking