Work is commencing on the enclosure for the Acid-Waste Neutralization (AWN) system. While the impact on any operations at BNC should be minimal, there will be some activities early in the project that could cause some vibration. This activity will take place at the southwest corner of the BNC. This work will be done on concrete that is not connected to the BNC - any vibration would be transmitted through the ground. The closest vibration-sensitive equipment is the Vistec e-beam writer, about 35 feet away. Next would be the Titan TEM and the Raith e-beam, both about 175 feet away. Weather permitting, the work will begin next Thursday, 22 April 2010, and last until the following Wednesday, 28 April 2010. Most of the activities will involve saw cutting, which should have no vibration impact. In some cases, however, a jackhammer will be used, and in all cases a backhoe and/or front loader will be used for the concrete removal. A more detailed schedule follows. Work will take place from 7:30 AM to 4:30 PM weekdays. No work will take place on weekends. Please contact Mark Voorhis if you experience any vibration-related issues. Thank you for your understanding during this necessary construction effort. Mark Voorhis John Weaver Mark Voorhis John R. Weaver Building Manager Facility Manager Birck Nanotechnology Center Birck Nanotechnology Center Purdue University Purdue University (765) 494-3036 (765) 494-5494 mvoorhis@purdue.edu<mailto:mvoorhis@purdue.edu> jrweaver@purdue.edu Date Time Vibration Activity Thursday, April 22, 2010 7:30AM - 3:30PM Saw cutting concrete Friday, April 23, 2010 7:30AM - 3:30PM Excavating cut concrete Monday, April 26, 2010 7:30AM - 3:30PM Excavating cut concrete & excavating dirt Tuesday, April 27, 2010 7:30AM - 3:30PM Excavating dirt & set forms, hammer drill existing concrete for rebar Wednesday, April 28, 2010 7:30AM - 3:30PM Pour & vibrate concrete Future Work Wednesday, May 26, 2010 7:30AM - 3:30PM Crane operation to set building steel - using pneumatic impact wrenches Thursday, May 27, 2010 7:30AM - 3:30PM Crane operation to set building steel - using pneumatic impact wrenches Friday, May 28, 2010 7:30AM - 3:30PM Crane operation to set building steel - using pneumatic impact wrenches Monday, May 31, 2010 7:30AM - 3:30PM Crane operation to set building steel - using pneumatic impact wrenches Tuesday, June 01, 2010 7:30AM - 3:30PM Crane operation to set building steel - using pneumatic impact wrenches