2010-09-29_REVISION - M1981185 ‎(12)‎

• Permit No: M1981185
• IBM Index Class Name: REVISION
• Doc Date: 9/29/2010
• Doc Name: Conversion Application for a 112‎(d)‎ Permit Part 1 Exhibit A thru Exhibit I Attachment 1
• From: Wildcat Mining, Co.
• To: DRMS
• Type & Sequence: CN1
• Email Name: WHE
• Media Type: D
• Archive: No

R 21NCORPORATED GEORGE ML ROBINSON.P.G.
ENVIRONMENTAL AND ENGINEERING SERVICES ). ERICH RAUBER,P.E.
STRATEGICALLY POSITIONED - TECHNICALLY PREPARED ANDREW HARLEY,PH.D
GWNY KING
MAY DAY IDAHO MINE COMPLEX
WILDCAT MINING CORPORATION
ORIGINAL 112(d) PERMIT
EXHIBIT I
Soils Information
Rule 6.4.9
An evaluation of soil samples was undertaken within operational areas of the May Day -Idaho
Mine Complex. This section reports the soil resources on the project site for determining the soil
types and characteristics, and also the suitability and amounts for use as plant growth media
( "topsoil ") during reclamation. Based on previous studies and 2010 field work, a baseline map
of the location of the soil types and an assessment of the physical and chemical characteristics
for reclamation and revegetation are presented.
1.0 General Description of Soil Resources
A Customs Soil Report was prepared for the general area using data available at the Natural
Resources Conservation Service (MRCS) website (Attachment I -1). Two soil surveys are
reported for the permit area:
• Animas- Dolores Area, Colorado, parts of Archuleta, Dolores, Hinsdale, La Plata,
Montezuma, San Juan and San Miguel Counties (C0672);
• La Plata County Area, Colorado (C0669).
A combined map of both surveys was prepared (Figure I -1). In both surveys, the dominant soil
type was the Nordicol very stony sandy loam (Plate 1), 6 to 25 percent slopes with the following
characteristics applicable to reclamation at the site:
• Landform: Mountain slopes
• Parent material: Slope alluvium and colluviums derived from sandstone
• Drainage Class: Well drained
• Available water capacity: Low
• Maximum salinity: Nonsaline.
The typical profile for this soil is:
• 0 -1 ": slightly decomposed plant material;
• 1 -7: Very stony sandy loam
• 7 -20 ": Very stony loam;
• 20 -28 ": Very stony sandy loam;
• 28 -52 ": Very stony sandy clay loam;
• 52 -61 ": Extremely stony sandy loam.
May Day Idaho Mine Complex 112(d) Permit Application
September 21, 2010
"Strategically Positioned — Technically Prepared"
5555 DTC Parkway Suite A -4000, Greenwood Village, Colorado 80111
Phone: [phone], Fax: [phone]