Friday, August 7, 2009

Controlled Blasts for Week of 8/10

For the week of August 10, blasts are currently scheduled for Monday morning as early as 8 am and on Tuesday the contractor intends to perform two blasts. We will post additional information as the contractor refines his upcoming schedule for the north and south shaft areas.

All indicators for vibration, noise and air quality are below the thresholds and are measured constantly. We were pleased to hear that Thursday's blast was less disruptive for neighbors. The Construction Manager noted that atmospheric conditions were different yesterday and cloud cover and wind (or lack of both) have a big impact on perception of sound pressure at a distance that translates into the shaking that neighbors feel.

The contractor intends to perform controlled blasting once or twice a day between 7am and 6pm Monday through Friday through the week of August 17. All safety and noise control measures are in effect and the work is performed in accordance with California Occupational Safety and Health (OSHA) and environmental regulations.

As you may know, Amy Sinclair is on vacation through August 21. I will be coordinating directly with you through that time. Maureen

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