[Code of Federal Regulations] [Title 40, Volume 21] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR163.7] [Page 163] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 163--CERTIFICATION OF USEFULNESS OF PESTICIDE CHEMICALS--Table of Contents Sec. 163.7 Factors considered in determining usefulness. In determining whether a pesticide chemical is useful for the purposes for which a tolerance or exemption is sought, consideration will be given, among other things, to: (a) The results of any experimental work by the petitioner on the effectiveness of the pesticide chemical for the purposes intended. (b) Data relating to the usefulness of the pesticide chemical obtained by other qualified investigators. (c) Reports of other experimental work before the Director in publications, the official files of the Agency, or otherwise. (d) Opinions of experts qualified in the fields involved. [[Page 164]]