EPA is soliciting comments on two documents, "PRZM Field and Orchard Crop Scenario Metadata" and "Standard Procedures for Conducting Quality Control and Quality Assurance for Pesticide Root Zone Model (PRZM) Field and Orchard Crop Scenarios." Interested parties may request a copy of the draft proposed procedures and scenario documentation as a set in Unit I.B. of this notice.
The PRZM Field and Orchard Crop Scenario Metadata documents the crop-specific parameters (specific value used and its reference) which are key elements of the exposure scenario used to determine surface water concentrations in ecological and drinking water assessments. Standard Procedures for Conducting Quality Control and Quality Assurance for PRZM Field and Orchard Crop Scenarios provides a defined set of steps (methods of selecting or estimating specific scenario values and available references) to develop and/or ensure the quality of a crop scenario. Both documents provide a transparent description of each environmental modeling scenario and the procedures used to create them while providing consistent and reproducible products.
Comments, identified by docket ID number OPP-2002-0182, must be received on or before October 21, 2002. They may be submitted by mail, electronically or in person. To ensure proper receipt by EPA, it is imperative that you identify docket ID number OPP-2002-0182 in the subject line on the first page of your response.
For further information, contact Sid Abel, Environmental Fate and Effects Division (7507C), Office of Pesticide Programs, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460; phone: (703) 305-7346; fax: (703) 305-6309; e-mail: [email protected].
Source: U.S. Environmental Protection Agency
