2014-01-30_REPORT - M1973021

• Permit No: M1973021
• IBM Index Class Name: Report
• Doc Date: 1/30/2014
• From: Jeremy Deuto
• To: DRMS
• Annual Report Year: 2013
• Permit Index Doc Type: Annual Fee/Report
• Email Name: PSH
• Media Type: D
• Archive: No

persistence of the joints was also widely variable, but ranged from low to medium.
Apertures of the joints were moderately open to open with slightly rough to rough
surfaces and were highly weathered. The second primary joint set exhibited a
strike ranging from 80 degrees to 100 degrees with dips ranging from 50 degrees
to 75 degrees. This joint set had similar properties to primary joint set 1— very poor
quality RQD, close to moderately spaced joints, low to medium persistence,
moderately open to tight joint apertures, and slightly rough to rough rock surfaces,
and high weathering. Foliations exhibited a strike ranging from 280 to 5 degrees
with dips ranging from 0 to 40 degrees. The spacing between of the foliation
varied, but was typically close. The persistence of the foliation was also widely
variable, but ranged from low to high. Apertures of the foliation were very
moderately open to open with slightly rough to rough surfaces and were highly
weathered.
Small blocks may form in this area due to the orientation of the highwall and joint sets of the
rock. In addition, due to the fractured nature of the rock and highwall weathering, raveling of
small to medium sized rocks can also be expected. These rocks resulting from block
formation and raveling are anticipated to be limited in size, and should be retained on the
bench below the highwall and only cause local operational delays.
Figures 9, 10, and 11 show the photo documentary of Haul Road Highwall 7260 — 7175.
3.3.5 Haul Road Highwall 7170 — 7125
The Haul Road Highwall 7170 — 7125 scanline is approximately 215 feet long and divided
into three distinct sections. The overall trend of the Haul Road Highwall 7170 — 7125 in all
sections is approximately 020 (north 20 degrees east).
• Sta. 0 +00 to 0 +80 was not mappable due to overburden, mine waste, and/or
rockfall obscuring the wall. However, it is assumed the highwall conditions are
similar to adjacent observable /mappable sections.
• Sta. 0 +80 to 1 +40 consisted of primarily of granitic and biotitic gneiss with minor,
localized pegmatite intrusions. At Sta. 1 +40, a 5 foot wide mafic intrusion was
visible. Rocks observed within the highwall typically exhibited medium high to
high compressive strength (estimated) and very poor quality RQD. Two primary
joint sets were evident. The first set exhibited a strike ranging around 195 degrees
with dips ranging around 88 degrees. The spacing between of these joints varied,
but was typically moderate. The persistence of the joints was also widely variable,
but ranged from low to medium. Apertures of the joints were moderately open to
tight with slightly rough to rough surfaces and were moderately to slightly
weathered. The second primary joint set exhibited a strike ranging around 295
degrees with dips ranging around 65 degrees. This joint set had similar properties
to primary joint set 1— very poor quality RQD, wide to moderately spaced joints,
GEI Consultants, Inc. 14 January 2014
2013 Morrison Quarry Annual Report