The contractor has scheduled a controlled blast at the South Shaft on Wednesday, July 8th in the morning. The contractor may plan a late afternoon controlled blast on Tuesday, July 7th, if necessary.
All indicators for vibration, noise and air quality are below the thresholds and are measured constantly.
Good news! The South Shaft has reached a depth of nearly 150 feet and will be ready this summer/early fall for the tunnel boring machine. Blasts at the South Shaft (to form the tunnel) will continue through the summer and will hopefully end in September or October or earlier.
Controlled blasting can take place between 7am and 6pm Monday through Friday.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.