[Code of Federal Regulations] [Title 40, Volume 13] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR68.33] [Page 167] TITLE 40 - PROTECTION OF ENVIRONMENT CHAPTER I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 68 - CHEMICAL ACCIDENT PREVENTION PROVISIONS--Table of Contents Subpart B - Hazard Assessment Sec. 68.33 Defining offsite impacts - environment. (a) The owner or operator shall list in the RMP environmental receptors within a circle with its center at the point of the release and a radius determined by the distance to the endpoint defined in Sec. 68.22(a) of this part. (b) Data sources acceptable. The owner or operator may rely on information provided on local U.S. Geological Survey maps or on any data source containing U.S.G.S. data to identify environmental receptors.