A legal loophole could be letting gas drillers inject fluids with high levels of benzene into the ground in gas-rich regions such as North Texas' Barnett Shale, a study by an environmental group finds. Although Congress regulated the use of fluids containing diesel fuel to extract gas from the ground, many other petroleum distillates that are not restricted have far higher benzene levels and pose a greater risk to people, the report by the Environmental Working Group said. Read the entire article here: http://www.dallasnews.com/sharedcontent/dws/news/texassouthwest/stories/... [1]