FOR FURTHER INFORMATION CONTACT: Copies of Federal >Guidance Report No.13 (FGR-13) are available by >contacting EPA's National Center for Environmental >Publication and Information on 1-800-490-9198 or by >visiting their web site: > > http://www.epa.gov/ncepihom . > >For technical information only, contact Mike Boyd on >202-564-9395, or by e-mail at BOYD.MIKE@EPA.GOV. The EPA document number is 402R97014