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2014-01-30_REPORT - M1973021
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2014-01-30_REPORT - M1973021
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Last modified
3/29/2017 12:54:51 PM
Creation date
2/3/2014 11:47:25 AM
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Template:
DRMS Permit Index
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
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Small blocks may form in this area due to the orientation of the highwall and joint sets of the <br />rock. In addition, due to the fractured nature of the rock and highwall weathering, raveling of <br />small to medium sized rocks can also be expected. These rocks resulting from block <br />formation and raveling are anticipated to be limited in size, and should be retained on the <br />bench below the highwall and only cause local operational delays. <br />Sta. 2 +20 to 3 +05 consisted of primarily of granitic rock with localized gneissic <br />pockets above elevation 7325. Granitic rocks observed within the highwall <br />typically exhibited moderate compressive strength (estimated) and very poor <br />quality RQD. The trend of the highwall was 025 (north 25 degrees east). Two <br />primary joint sets were evident. The first set exhibited a strike ranging from 340 <br />degrees to 355 degrees with dips ranging from 70 to 75 degrees. The spacing <br />between of these joints varied, but was typically very close to close. The <br />persistence of the joints was also widely variable, but was typically medium. <br />Apertures of the joints were open with slightly rough to rough surfaces and were <br />highly to completely weathered. The second primary joint set exhibited a strike of <br />approximately 270 degrees with dips ranging from 80 degrees to 90 degrees. This <br />joint set had similar properties to primary joint set 1— very poor quality RQD, very <br />close to close spaced joints, medium persistence, open joint apertures, and slightly <br />rough to rough rock surfaces, and high to complete weathering. <br />Sta. 2 +20 to 3 +05 consisted of primarily of granitic and biotitic gneiss below <br />elevation 7325. Gneissic rocks observed within the highwall typically exhibited <br />high to very high compressive strength (estimated) and poor quality RQD. The <br />trend of the highwall was 060 (north 60 degrees east). Two primary joint sets were <br />evident. The first set exhibited a strike ranging from 15 degrees to 355 degrees <br />with dips ranging around 80 degrees. The spacing between of these joints varied, <br />but was typically low to moderate. The persistence of the joints was also widely <br />variable, but ranged around medium. Apertures of the joints were moderately open <br />to tight with slightly rough to rough surfaces and were slightly weathered. The <br />second primary joint set exhibited a strike ranging from 305 degrees to 315 <br />degrees with dips ranging from 75 to 80 degrees. This joint set had similar <br />properties to primary joint set 1— poor quality RQD, widely spaced joints, low to <br />medium persistence, moderately open to tight joint apertures, and slightly rough to <br />rough rock surfaces, and slight weathering. Foliations exhibited a strike ranging <br />from 190 to 230 degrees with dips ranging from 20 to 55 degrees. The spacing <br />between of the foliation varied, but was typically very close to wide. The <br />persistence of the foliation was also widely variable, but ranged around medium. <br />Apertures of the foliation were moderately open to tight with slightly rough to <br />rough surfaces and were moderately to slightly weathered. <br />Small blocks may form in this area due to the orientation of the highwall and joint sets of the <br />rock. In addition, due to the fractured nature of the rock and highwall weathering, raveling of <br />small to medium sized rocks can also be expected. These rocks resulting from block <br />GEI Consultants, Inc. 11 January 2014 <br />2013 Morrison Quarry Annual Report <br />
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