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2021-09-07_REVISION - M1973021 (7)
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2021-09-07_REVISION - M1973021 (7)
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Entry Properties
Last modified
9/13/2021 1:26:24 PM
Creation date
9/7/2021 12:24:46 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1973021
IBM Index Class Name
Revision
Doc Date
9/7/2021
Doc Name Note
Appendix 1 Geotech Exhibit
Doc Name
Adequacy Review Response
From
Aggregate Industries-WCR, Inc.
To
DRMS
Type & Sequence
AM7
Email Name
ECS
MAC
Media Type
D
Archive
No
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4, 41 '4 <br /> Jap-0-1- <br /> �. <br /> 'i <br /> Photo 2-1. Outcrop of sillimanitic gneiss with banding. <br /> Mafic Dikes <br /> The mafic dikes are observed in the exposed highwalls within the South and Central Quarry <br /> and are evident in rock cores obtained during drilling. Compositional information is not <br /> available for the mafic dikes but field classifications indicate this unit is rich is iron and <br /> magnesium. The mafic dikes are generally near vertical, about 4 to 6 feet in width, primarily <br /> fine grained, and are linearly continuous across much of the site. The dikes are darker <br /> colored due to mafic minerals being rich in magnesium and iron, and are variable in their <br /> strength and hardness, which ranges from soft to hard (H3 to H6). The mafic dikes can be <br /> more weathered than the adjacent bedrock and tend to cross-cut foliation. Photo 2-2 shows a <br /> mafic dike in the Central Quarry. <br /> 6 <br /> Aggregate Industries—Morrison Quarry GEI Consultants, Inc. <br /> AM-07 Geotechnical Stability Exhibit November 2020 <br />
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