EPA is issuing a technical amendment to a tolerance exemption it published in the Federal Register on August 15, 1997 (62 FR 43650). This technical amendment changes the name of the active ingredient from ``Replicase Protein of Potato Leaf Roll Virus and the genetic material necessary for it's production'' to ``Potato Leaf Roll Virus Resistance Gene (also known as orf1/orf2 gene) and the genetic material necessary for it's production.'' This action is requested by Monsanto Company, who originally filed the pesticide petition requesting an exemption from the requirement of a tolerance for residues of the biological pest control agent under the name ``Replicase Protein of Potato Leaf Roll Virus and the genetic material necessary for it's production.'' The change was suggested by the Agency as a result of the review of data which indicated that the former active ingredient, Replicase Protein of Potato Leaf Roll Virus and the genetic material necessary for it's production, was not solely responsible for providing the plant product with its' pesticidal properties (i.e., resistance to infection by the Potato Leaf Roll Virus). Changing the active ingredient name in no way changes the findings, determinations, or effects of the originally issued final rule published in the Federal Register of August 15, 1997 (62 FR 43650). DATES: This regulation is effective March 17, 1999. Objections and requests for hearings must be received by EPA on or before May 17, 1999. ADDRESSES: Written objections and hearing requests, identified by the docket control number [OPP-300530A], must be submitted to: Hearing Clerk (1900), Environmental Protection Agency, Rm. M3708, 401 M St., SW., Washington, DC 20460. Fees accompanying objections and hearing requests shall be labeled ``Tolerance Petition Fees'' and forwarded to: EPA Headquarters Accounting Operations Branch, OPP (Tolerance Fees) and forwarded to: EPA Headquarters Accounting Operations Branch, OPP (Tolerance Fees), P.O. Box 360277M, Pitt