2013-10-10_PERMIT FILE - M2013068 ‎(2)‎

• Permit No: M2013068
• IBM Index Class Name: PERMIT FILE
• Doc Date: 10/10/2013
• Doc Name: Application Adequacy Review No 1
• From: DRMS
• To: Caleb Liesveld/ Colorado Rose Red Inc
• Email Name: MAC
• Email Name: TAK
• Media Type: D
• Archive: No

Mr. Liesveld
Page 12
October 10, 2013
4. Please provide a commitment to not exceed a maximum peak particle velocity of 1.0
inch/sec. The maximum peak particle velocity shall apply at the point where a straight line,
between the nearest shot hole and the nearest house, intersects the property boundary
between the mine site and the adjacent residence.
5. The Division requires all Operators using explosives to complete a blasting report for each
shot. The report must be retained by the Operator for at least 3 years and be available for
inspection by the Division on demand. The record shall contain the following data:
a) Location, date and time of blast;
b) Name, signature, and license number of blaster -in- charge;
c) Identification, direction and distance in feet, from the nearest blast hole to the nearest
potentially affected structure, such as any dwelling, school, church, or community or
institutional building either:
i. Not located in permit area; or
ii. Not owned nor leased by the person who conducts the mining operations.
d) Weather conditions, including temperature, wind direction, and approximate velocity;
e) Type of material blasted;
f) Sketches of the blast pattern including number of holes, burden, spacing, and delay
pattern. Sketches shall also show decking, if holes are decked to achieve different delay
times within a hole;
g) Diameter and depth of holes;
h) Types of explosives used;
i) Total weight of explosives used per hole and maximum weight of explosives per 8-
millisecond period;
j) Initiation system;
k) Type and length of stemming;
1) Mats or other protections used;
m) Type of delay detonator and delay periods used;
n) Number of persons in the blasting crew; and
o) Seismographic records, including:
i. Type of instrument, sensitivity, and the calibration signal of the gain setting or
certification an annual calibration;
ii. Exact location of instrument and the date, time and its distance from the blast;
iii. Name of the person taking the reading;
iv. Name of the person and firm analyzing the seismographic record;
V. The vibration level recorded.
6. Please specify how many blasting events will occur on a daily basis.
7. The drill hole profile included in the blasting plan shows explosives will be loaded into a 3
inch diameter drill hole that is 12 ft. deep. The dimensions of the drill hole will accommodate
30 lbs. of explosives (ANFO). Please specify how a drill hole with the above referenced
dimensions will be loaded with 60 lbs. of explosives; provide a separate drill hole profile for
blasts requiring 60 lbs. of explosives, if necessary.