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1996-09-27_PERMIT FILE - M1996076
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1996-09-27_PERMIT FILE - M1996076
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Last modified
2/20/2021 8:19:02 AM
Creation date
11/20/2007 10:41:53 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1996076
IBM Index Class Name
Permit File
Doc Date
9/27/1996
Doc Name
LIMITED IMPACT OPERATION 110 2 RECLAMATION PERMIT APPLICATION FORM
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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• CONCLUSIONS <br /> A conditional use permit to quarry native soil and rock within <br /> a 9-acre parcel for commercial production of riprap, roadfill, <br /> landscaping stone, and other construction materials is being <br /> requested from Mesa County. A field reconnaissance and <br /> examination of material from a test pit, as well as review of <br /> geologic literature, have revealed that the proposed quarry <br /> is on a very large alluvial fan deposited by an ancient glacial <br /> meltwater stream at the mouth of Rapid Creek. <br /> The fan materials consist of a very coarse fraction of basalt <br /> cobbles and large boulders up to 7 feet in size with a clay/silt <br /> matrix. A visual examination of the materials excavated from <br /> the one test pit suggests the grading is approximately 50 percent <br /> silt, clay, and sand, and 50 percent gravel, cobbles, and <br /> boulders. This grading is only an estimation; screening of <br /> several large samples would be required to more accurately <br /> determine gradings. The visual examination also suggested that <br /> the sand and gravel sizes are not present in large percentages. <br /> An approximation of 335, 000 cubic yards of total material <br /> available has been made using 30 feet as average depth. This <br /> estimate is believed to be conservative as the deposit may be <br /> deeper; however, drill holes or several deep pits, which would <br /> • be expensive, would be necessary to allow an accurate volume <br /> computation. <br /> This unsorted fan deposit will require separation to produce <br /> soil/rock material for each particular commercial specification, <br /> but a large volume of earth material is present at the site. <br /> The cobble and boulder sizes are almost entirely composed of <br /> hard, dense basalt, which is a very durable rock type somewhat <br /> unique to the Grand Valley area. Most of the bedrock formations <br /> in the area are soft shales and poorly cemented sandstones which <br /> do not have good durability. The rock types and volume of <br /> material available at this proposed riprap quarry will <br /> undoubtedly have commercial value, upon processing, for <br /> construction needs in the local market. <br /> Prepared by: <br /> BARNES GEOLOGIC CONSULTING, INC. <br /> SEpf PROF .. <br /> Joe G. Barnes, President �S AIPG <br /> Engineering Geologist " t <br /> • ' �E BARN of°` <br /> PROSESS <br />
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