By Jon Hurdle
AVELLA, Pennsylvania (Reuters) - Mon Nov 9, 2009 9:37am EST - Water tests at three locations by gas wells on Zimmermann's property -- one is 1,500 feet from his home -- found seven potentially carcinogenic chemicals above "screening levels" set by the U.S. Environmental Protection Agency as warranting further investigation. http://www.reuters.com/article/idUSTRE5A80PP20091109