ENFORCE22856

• Permit No: C1981019
• IBM Index Class Name: Enforcement
• Doc Date: 10/29/2003
• Doc Name: Blast Review Summary
• From: Byron Walker
• To: Dan Hernandez
• Violation No.: CV2003013
• Media Type: D
• Archive: No

Blast Record Hole Depth Loading Total Weight of Peak Particle Air Blast,
of (date) Information Information Explosives per Velocity regulatory
Complete? Complete? 8-millisecond (seismograph) maximum
time period inlsec; 133db
corroborated by measured;
the review? regulatory
maximum

additional sheet filed was and the analysis regulatory
information so for dry holes. indicated that a max I.00
as to complete The blast maximum of two
the review. included wet holes were
holes. Wet detonated within
hole loadings 8-milliseconds of
could be each other. The
calculated analysis
from indicated that a
information maximum of
provided in the 4,568 pounds
blast record were detonated
(hole depth, with an 8-
stemming, millisecond time
weight of period, the
explosives per record indicated
foot, number 5,309 pounds
of primers). (16%
difference). The
maximum
permissible was
6,112 pounds. In
this case,
Colowyo
doubled the
maximum
loading of a
hole, which was
a conservative
approach to
compare the
compliance of
the blast with
permissible
loadin s.
February 13, No. Colowyo Yes. No. The analysis Measured 116.1
2003 rovided indicated that a 0.140 (lon );