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PERMFILE70429
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PERMFILE70429
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Entry Properties
Last modified
8/24/2016 11:19:34 PM
Creation date
11/20/2007 11:21:47 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1994082
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
Ground Stability Yoast Mine & Vicinity
Section_Exhibit Name
Tab 13 Attachment 13-6A
Media Type
D
Archive
No
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color photos were reviewed in AI's Arvada office after they arrived several days later <br />• from storage in Flagstaff, AZ. <br />Landslide deposits were not observed on the b-w photos. Exposures examined <br />were 1) 1992 (1:27,000 and 1:60,000), 2) 1997 (1:27,000); and 3) 1998 (1:27,000). <br />After the initial examination of the photographs Messrs. Altavilla and James, and the <br />writer went to the field and observed several of the areas mapped as landslide deposits on <br />Exhibit 6-1; however, none of these exhibited characteristic landslide morphology, and <br />some simply were in bedrock. In areas where topsoil had been removed there was no <br />indication of landslides having been in place before excavation. <br />On July 2nd Messrs. Altavilla, James, and the writer made a brief telephone <br />conference call to Dr. Pendleton and reported preliminary conclusions regarding the <br />office and fieldwork. <br />Additional subsequent review in Arvada of the b-w and natural color photographs <br />showed no indication of landslide deposits except one small questionable feature <br />(Landslide D, Fig. 1). <br />A second trip to the field was made with Mr. Altavilla. Although the primary <br />reason for this trip was for the writer to duplicate pictures that had been taken with a <br />malfunctioning camera on July 1st and 2nd, this trip served to reinforce the prior field <br />observations. <br />4.02 Comparison with Exhibit 6-1 <br />The landslides mapped on Exhibit 6-1 are shown on Drawing 9316-B-1. Four <br />landslides in the northwest corner of the drawing were excluded from this investigation <br />because they aze welt outside of the mine permit area and its vicinity. Each of the other <br />• <br />
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