On Wednesday, May 13 at 1:30 p.m., at the Indiana Government Center South, 10 North Senate Avenue, Conference Center Room A, Indianapolis, Indiana, the Environmental Rules Board will hold a public hearing on amendments to 327 IAC 5 and 327 IAC 15 concerning National Pollutant Discharge Elimination System general permits (NPDES). The purpose of this hearing is to receive comments from the public prior to consideration of final adoption of these rules by the board. All interested persons are invited and will be given reasonable opportunity to express their views concerning the proposed amendments. Oral statements will be heard, but, for the accuracy of the record, all comments should be submitted in writing. Additional information regarding this action may be obtained from MaryAnn Stevens, Rules Development Branch, Office of Legal Counsel, (317) 232-8635 or (800) 451-6027 (in Indiana).