PERMFILE70564

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 5/4/2007
• Doc Name: Soil Inventory Danforth Hills Project Report Dated 12/17/1984
• Section_Exhibit Name: Exhibit 09 Item 7 -ST
• Media Type: D
• Archive: No

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1.U INTRUUUCTIUN
1.1 Purpose and Scope
This soil inventory was conducted for
(Consol) for their Danforth Hills Project.
to meet the Rules and Regulations of the C
Reclamation Board (CMLRB), pursuant to the
Mining Reclamation Act: 34-33-1U1 et seq.,
Resources Information.
Consolidation Coal Company
The program was designed
olorado Mined Land
Colorado Surface Coal
section 2.01.9 Soil
Tne primary purpose of the inventory is to provide Consol with a
detailed description of the quality and quantity of topsoil overlying
areas to be affected by mining and to provide recommendations for soil
stripping depths. Soil information relating to the description of
premining environmental resources, land use, reclamation, and prime
farmlands is also provided.
The soil inventory covers about B,000 acres. Tne investigation
consisted of detailed soil mapping, description, sampling, testing,
and evaluation of each maJor soil series within the study area.
1.2 Methods
The study was conducted by Jim Walsh of James P. Walsh & •
Associates, Inc. according to the standards of the National
Cooperative Soil Surveys {USDA, 1951, 1975, 1981, 1983). The proposed
methods and scope were presented to the staff of CMLRB in May 1984 and
their approval was obtained.
Soil data for the site was compiled from Soil Conservation
Service (SCS) unpublished mapppiny in Moffat County and from the
published Soil Survey of Rio Blanco County (USDA-SCS, 1982). The soil
mapping from the two sources was transferred to 1:4,800 scale
rectitied photo base maps (orthophotos) and refined using air-photo
interpretation.
Soil mapping was conducted in June and July of 1984 by Jim Walsh
and Jean MacCubbin. The mapping rate was approximately 2UD acres per
person-day. Mapping was conducted on foot using tiling spades and
hand augers. At about 285 locations, soil observation holes were dug.
At these locations notes were taken (more or less deta filed depending
on the utility for mapping) and a number assigned for the hole. The
locations of the holes are shown on the soil maps as a dot and a
number ~®95 )
The series and map unit descriptions in this report are site
specific; they were developed from the observation hole data and
1 field mapping, making use of a data base manager. Tne data from each
l observation hole and typical pedon (hole number, percent slope;
aspect, position, vegetation, lift l thickness, lift 2 thickness, _
total thickness, series name, map unit) were entered into the data
base manager and sorted in several ways. A list sorted by series
showed the thickness, position, aspect, slope and vegetation for each
2