united states office of air quality planning and standards final report environmental protection epa 452 r 99 003 agency research triangle park nc 27711 may 1999 economic impact analysis the oil natural gas production neshap transmission storage o f i c e q u a l t y pla nn in g n d s ta nd rd ir lea us radiation strategies division md 15 disclaimer this is issued by & it presents technical data on national emission standard for hazardous pollutants which interest to limited number readers should be read conjunction with background information document bid