If you want a balanced view of fracking with some believable statistics try a google search of wellhead integrity and annular pressure build up. Fracking in itself is relatively harmless apart from microseismic events. It is the delivery of the propant material and subsequent gas delivery to and fron the frack zone that can cause severe problems. If well integrity is compromised, then any aquifers that the well passes through may also be compromised. Lack of well integrity is the real issue at stake when fracking. To put everyone's mind at rest independant third party verification of those aspects itemised below is required as a minimum. a)the well plan b)the drilling plan c)the casing and cement program d)the completion program e)ongoing lifetime monitoring until abandonment and final plug setting. Should such an approach be adopted it would allay many people's fears and put the entire process from planning to final lease relinquishment on a much more rigerous, informed, scientific basis.
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