Blasting Schedule Tressler Quarry Permit No. 14120302 April 1, 2026 through April 1, 2027 Notice is hereby given that Glenn O. Hawbaker, Inc., having Offices at 1952 Waddle Road, State College, PA 16801, acting as a contract mine operator for Graymont (PA), Inc., having offices 965 East College Avenue, PA 16823, proposes to conduct blasting activity in compliance with all State and federal laws at the Tressler Quarry, Permit No. 14120302. The quarry is located in Spring Township, Centre County, on lands owned by Graymont (PA), Inc. The permit area is 67.3 acres and is situated approximately 3 miles west of the town of Pleasant Gap on State Route 64, set off to the southeastern side of the highway. The Mingoville Pa., U.S. geological Survey 7.5-minute topographic map contains the area described. Blasting will be conducted between the hours of sunrise to 8am, 8am to 12 noon, 12 noon to 4pm and 4pm to sunset Monday through Friday. Warning signs will be placed at every entrance to the quarry. Three warning signals, with duration of 5 seconds each will be sounded at least one minute but not more than 2 minutes prior to each blast. An all clear signal of 10-second duration will be sounded after each detonation has been deemed safe by the blaster in charge. Prior to blast detonation access will be control to the immediate area. The above time schedule may vary on occasion, depending on emergency conditions and safety issues such as electrical storms, technical problems and/or equipment breakdown. IPL0324561 Mar 25 2026