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_INSPECTION - C1981010 (81)
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_INSPECTION - C1981010 (81)
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Entry Properties
Last modified
11/6/2020 5:40:15 AM
Creation date
8/27/2013 9:05:17 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
INSPECTION
Doc Name
Inspection Report
From
DRMS
To
Graham Roberts
Inspection Date
8/15/2013
Email Name
JLE
SB1
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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August 15,2013 C-1981-010/Trapper Mine JLE <br /> Maps and the latest 2012 ARR Maps. These maps can overlay each other allowing for a visual comparison of the <br /> topography. The Division then places transects through the reclamation parcels to be evaluated. Along each <br /> transect,multiple sample points are placed. The elevation of each of these points is interpolated from the PMT <br /> maps and the SL14 maps. During the ground inspection,the Division walks each of these transects and logs the <br /> elevation at each sample point using a Trimble YUMA GPS unit. Many variables effect the precision of the <br /> elevations measured with the GPS unit,however the error in elevation is generally consistent throughout the site. <br /> A surveyed elevation point is located near the water tanks adjacent to the mine office. The elevation at this point <br /> is measured with the GPS and the difference of that measurement from the know elevation is used as a correction <br /> factor. During this inspection the correction factor was 31.9 feet,meaning 31.9 feet was added to each of the GPS <br /> measured elevations. Using Microsoft Excel®,the Division can chart the PMT map elevation, SL14/ARR map <br /> elevation and the measured elevation to create cross-sections from the transects for each reclamation parcel for an <br /> easy comparison. <br /> During this inspection the Division walked 11 transects;maps are enclosed with this report that depict the location <br /> of each of these transects and the elevation sample points. The following parcels have been requested for bond <br /> release,the SL14 bond release map depicts the location of these parcels;A-B-12,F-A-12,F-A-11,F-A-10,F-AB- <br /> 09,A-B-09,A-B-10,Z-A-10,K-A-11 and K-A-10. As indicated,some of these parcels have been evaluated for <br /> backfilling and grading compliance during previous inspections and they were not sampled during this inspection. <br /> However,all of these parcels were observed during this inspection. Attachment A enclosed with this report <br /> contains the results tables and cross sections of the parcels evaluated. Below is a discussion of these results. <br /> Parcel A-B-10 contained two transects;Transect 1 and Transect 11. This parcel has a northeast aspect and blends <br /> in well with the surrounding topography. Transect 1 was 2,298.72 feet long and changed in elevation by about <br /> 307 feet total,yielding a overall slope of about 13.3%. The cross-sections generated from both the PMT map,the <br /> SL14 bond release map and the on the ground elevations were very similar in grade and shape. The measured <br /> elevation at each sample point was about 9.71 feet higher on average than the elevation interpolated from the SL14 <br /> bond release map. Transect 11,is located at the base of Parcel A-B-10. Similar to Transect 1,the cross-sections <br /> derived from each elevation point were very similar. Parcel A-B-10 appears to have been graded in accordance <br /> with the approved post mine topography. <br /> Parcel F-AB-09 was evaluated with Transects 2 and 12. The parcel overall has a north northwest aspect except for <br /> a small portion at the top of the parcel. The south end of the parcel encompasses the top ridge of the slope which <br /> falls to the back side of the mountain with a southeast aspect. This parcel blends in well with the surrounding <br /> topography. The average slope from both transects is approximately 11.07%. All of the cross-sections have the <br /> same general shape and slope. The measured elevations were about 16 feet lower on average than the elevations <br /> interpolated from the SL14 bond release map. This parcel appears to have been graded in accordance with the <br /> approved post mine topography. <br /> Parcel F-A-10 was evaluated with Transect 3. This parcel is located at the top of the ridge,and the top of the <br /> parcel is a saddle between two summits. The northern two thirds of this parcel has a north northwest aspect and <br /> the top third of the parcel has a south southeast aspect. This parcel blends in well with the surrounding <br /> topography. The average overall slope of this parcel is about 10.5%. The cross-sections for this transect have the <br /> Number of Partial Inspection this Fiscal Year: 2 <br /> Number of Complete Inspections this Fiscal Year: 0 <br /> Page 3 of 9 <br />
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