ISF Helps Achieve EPA Requirements On August 16th 2012 the EPA published a new rule – EPA-HQ-OAR-2010-0505 states that continuous bleed natural gas-driven pneumatic controllers between the wellhead and the gas processing plant must have a bleed rate not greater than 6 SCFH. The gas industry has until October 15, 2013 to comply. Proportion-Air’s ISF1 … Continued