The Minnesota Pollution Control Agency proposed amendments to Minn. R. 7150.0010, Applicability; Minn. R. 7150.0100, Performance Standards for UST Systems; Minn. R. 7150.0205, Design and Construction; Minn. R. 7150.0211, Class A, B, and C Operator Requirements; Minn. R. 7150.0215, Operation and Maintenance of Cathodic Protection; Minn. R. 7150.0300, Release Detection; Minn. R. 7150.0340, Methods of Release Detection for Piping; Minn. R. 7150.0400, Temporary Closure; Minn. R. 7150.0410, Permanent Closure and Change in Status to Storage of Non-Regulated Substances; Minn. R. 7150.0420, Site Assessment; and Minn. R. 7150.0450, Reporting and Record Keeping. The agency will not hold a public hearing unless it receives 25 or more requests to do so. http://www.comm.media.state.mn.us/bookstore/stateregister/34_23.pdf pp. 809-817.