Blasting specifications.pdf

Table of Contents

Table of Contents

205 - Rock Blasting

205.03 Regulations

205.06 Preblast condition survey and vibration monitoring and control

205.07 Test Blasting

205.08 Blasting

205 - Rock Blasting

205.02_nat_us_05_13_2004

205.03 Regulations

Add the following:

(e) Forest Service Manual (FSM) 6745 Explosives and Blasting Materials.

205.06_nat_us_05_12_2004

205.06 Preblast condition survey and vibration monitoring and control.

Add the following:

Limit blasting induced vibrations in saturated soils or on steep slopes as designated or as directed by the CO.

Notify the owners of nearby utilities at least 24 hours before blasting.

205.07_nat_us_05_12_2004

205.07 Test Blasting.

Add the following:

Test blast at all new sources, when rock type changes, and when blast layout changes due to slope or other changes.

205.08_nat_us_05_12_2004

205.08 Blasting.

Delete the following:

Place a stake next to each hole with hole number and total depth drilled.

Do not stem the hole with drill cuttings.

Add the following:

(8) Halt blasting operations when any of the following conditions exist:

Precipitation exceeds 1 inch in any 24 hour period.

Precipitation exceeds 3 inches in any 96 hour period.

Precipitation exceeds 4 inches in any 144 hour period.

A landslide occurs within 300 feet of a blast site under any precipitation conditions.