refineries in texas. and so for people to perpetrate that myth is just an untruth. >> perhaps, john, the biggest concern is something that was underscored in this study that was released in canada saying that canada found toxins are likely seeping into groundwater from oil sands so how can we trust to the oil industry will keep it clean while doing business? >> there are always risks with hydro carbons but we have 200,000 miles of oil products pipelines in the country today, 25,000 of which reside on top of the owigalala aquifer. they work. they can break, they can be fixed, but they work. they create the economic prosperity and the transportation system that's the envy of the world in these united states and i think we need to provide that for future generations as well, 20, 30, 40 years into the future.