All researchers: As you can see by the information in the note below, building vibrations will continue today until 5:30 pm and tomorrow until noon. This is out of our control and was completely unexpected. Please schedule vibration-sensitive work accordingly. My apologies for any interruptions that this has caused and will cause - it was a surprise to all the BNC staff. John John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu -----Original Message----- From: Hassenplug, Heather D Sent: Thursday, July 26, 2012 10:49 AM To: Weaver, John R Cc: Skiba, Chris E; Franscoviak, Tony E Subject: RE: Excavation John, I apologize for the vibrations. The contractor ran into a unforeseen condition; the old slab for the generator was 3 foot thick. To put it in perspective, the new slab for the generator is designed at 12". This is causing the contractor to have larger than expected chunks of concrete. The vibrations will unfortunately continue today until 5:30PM and then tomorrow until noon. There should be no more planned vibrations after that. With the nature of construction I can't tighten the window any more than on and off until noon tomorrow. Again I apologize for the vibrations. Heather -----Original Message----- From: Weaver, John R Sent: Wednesday, July 25, 2012 3:44 PM To: Hassenplug, Heather D Cc: Skiba, Chris E Subject: RE: Excavation Importance: High Heather - They are back at it again. It is bad enough that it is shutting down our research - I have had multiple researchers contacting me regarding the vibrations. The problem is timing. They are doing the work at random times during the day - no way for us to predict when the gross vibrations are going to occur. Shutting down research from 7:00 am to 6:00 pm is not reasonable - we need tighter time windows. Thanks, John John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu -----Original Message----- From: Hassenplug, Heather D Sent: Wednesday, July 25, 2012 1:26 PM To: Weaver, John R Subject: RE: Excavation John, I'm checking with our inspector, Tony, and the contractor. I'll let you know what I get back. Thanks for the email. Heather -----Original Message----- From: Weaver, John R Sent: Tuesday, July 24, 2012 10:03 AM To: Hassenplug, Heather D Subject: Excavation Heather - I guess I didn't understand the impact (all puns intended) of the excavation at the Bindley Expansion. I was expecting "standard" excavation work - digging an breaking up concrete. The method for breaking the concrete appears to be lifting large pieces to height, then dropping them. This literally bounces the Birck building. Compounding the issue, this is done at seemingly random times throughout the day. Two questions: First, how long is this expected to continue? (Not the excavation in general, just the dropping of the large concrete pieces.) Second, would it be possible to break up the concrete during a discrete period of time that I can communicate to our users. Right now it is at random intervals between 7:00 am and 6:00 pm. Anything that can be done to help would be appreciated. If nothing can be done, we will live with the situation. Thanks, John John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu