No Blast scheduled for Tuesday

Just a reminder that the contractor has no shaft detonations scheduled for Tuesday, August 18. I will post the schedule for Wednesday through Friday, as soon as it is confirmed.

A Look Inside the Shaft

Left: The drill is lowered down into the shaft and on right, worker loads the drilling holes prior to blasting.

Friday blast around noon; end of double blasts

Tail tunnel excavation is complete, and that means that two blasts a day are no longer necessary. Today's blast will occur around noon, similar to Thursday.

All indicators for vibration, noise and air quality are below the thresholds and continue to be measured constantly. Late today, check out photos from inside the tunnel.

Neighbor Helps Get the Job Done

This morning, Gene Ciranni, on right, a neighbor from Ascension Drive, helped Jim Mulkey, one of the contractor's superintendent's and a licensed blaster, set off the second underground blast around 10:30 am. On Thursday, there will be only one blast, and it is scheduled between 11 and 11:30 am.

Controlled Blast Tuesday around 9 am, Two Wed.

I just learned that there will be one blast today and two tomorrow. You can expect sound pressure around 9 am or within 30 or 40 minutes of that time. The contractor is planning two more for tomorrow, but I do not have the times confirmed. Also, one on Thursday and another on Friday.

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

Controlled Blast Schedule Update - Week of August 3rd

A blast is scheduled for Wednesday, 8/5 between 12 and 1pm. Additional blasts may take place on Thursday. Blasting is not planned for Friday. Multiple blasts per day may continue into next week as needed - usually one in the morning and one late afternoon.

All indicators for vibration, noise and air quality are below the thresholds and are measured constantly.

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.