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PERMFILE72922
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PERMFILE72922
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Entry Properties
Last modified
8/24/2016 11:22:27 PM
Creation date
11/21/2007 12:29:18 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
Exhibit 26a Geotechnical Investigation Refuse Disposal Area (Revised)
Media Type
D
Archive
No
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The placement of continuous zones of fine material could create low <br />permeability lenses causing perched water conditions and/or weak zones wRhin the <br />fill. Waste slurry or pond dippings should not be placed in the RDA except in <br />isolated locations. Fine materials may be spread over isolated, thin, non-continuous <br />areas, or in isolated "cells" near the back (west side) of the fill. Specific <br />requirements for the "cells" can be determined if they are required. <br />The surface of the waste pile may develop a layer of dirt and/or fine crushed <br />waste due to traffic on the surface. The collection of surface water on the waste pile <br />~~ should be minimized. The surface of the pile should be maintained to promote run- <br />off from the pile. <br />The moisture content of the fill will need to be monitored as the fill is placed. <br />• Moisture density relationships (AASfiTO T 99( ASTM D 698) determined in our <br />laboratory testing for the previous investigation indicate optimum moisture contents <br />of 8.5 percent (unprocessed) to 7 percent (processed) after correction for large <br />~ particles. The capacity of the waste material to hold water was further evaluated <br />during permeability testing. After saturation, the samples were allowed to drain and <br />stabilized at moisture contents of 12 (unprocessed) to 18 (processed) percent. <br />~ Considering a correction factor for large particles, we believe the moisture content <br />below which free water will not be generated (the field capacity) is in the range of <br />9 to 15 percent. <br />~ Based upon the information available to date we recommend maximum <br />moisture contents of the waste material be 3 percent above optimum. Review of the <br />moisture density results indicate a minimum moisture content of 4 to 5 percent below <br />i <br />• optimum may be required to obtain 90 percent compaction. The Proctor density and <br />23 <br /> <br />
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