2015-01-26_PERMIT FILE - C1981012 ‎(8)‎

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 1/26/2015
• Section_Exhibit Name: Section 3.0 Performance Bond Requirements
• Media Type: D
• Archive: No

Topsoil stockpile material stored in Topsoil Stockpile No. 2 was sampled at two
locations. Topsoil product measured was generally free of rocks larger than % inch
diameter. Soils appeared to be a sandy clay loam, which is consistent with soil
descriptions for the area. Samples weighed 57.0 Ibs and 56.5 pounds, resulting in an
average density of 56.75 Ibs /bucket, which converts to 1,913 Ibs /cu.yd.
Subsoil stockpile material located in the subsoil stockpile located to the west of Topsoil
Stockpile No. 2 was sampled in four locations. The subsoil material was generally a
sandy, clay material with obvious black and gray color from coal and coal rider seams.
Generally the material was slightly rockier than the topsoil but rocks were small and less
than 2 inches. Four measurements resulted in a density of 60.9, 64.2, 53.1, and 57.3
resulting in an average of 58.875 or 1,984 Ibs /cu.yd.
Coal stockpiled in the clean coal stockpile was weighed. Three samples were measured
and resulted in 40.6, 39.5, and 40.6 Ibs /bucket resulting in an average density of coal of
40.23 Ibs /bucket or 1355 Ibs /cu.yd.
Washed coal refuse at the RDA was measured and returned a value of 52.9 Ibs /bucket,
which is 1783 Ibs /cu.yd.
Three stockpiles of sized gravel were also present and weighed for comparison to other
material values. A two inch sized product weighed 67 Ibs /bucket or 2,258 Ibs /cu.yd. A
mixed gravel product weighed 67.4 Ibs /bucket or 2,271 Ibs /cu.yd. A % inch sized
product weighed 64.1 Ibs /bucket or 2161 Ibs /cu.yd.
Calculation Method One Material Weights
Product
Density (Ibs /cubic yard)
clean coal
1,355
washed coal refuse
1,783
topsoil stockpile no. 2
1,913
subsoil
1,984
gravel products
2,230 (averaged)
Density Calculation Method Two
The interior volume of the same five - gallon bucket was physically measured and
converted to a volume in cubic feet. The interior radius of the bucket was measured at
the top interior and the bottom interior and averaged 5 7/16 inches. The interior height
to the lip of the bucket was measured at 13 7/8 inches. Total bucket volume was
calculated at 1288.13 cubic inches or .7454 cubic feet. Material density was then
determined in pounds (Ibs) per cubic yard by the formula;
Material weight in pounds(lbs) /.7454 cu.ft. X 27 cu.ft /cu.yd = material density
(Ibs /cu.yd)
Section 3.0 TR -68 9/29/2014