PERMFILE66751

• Permit No: M1997054
• IBM Index Class Name: Permit File
• Section_Exhibit Name: EXHIBIT I - SOILS INFORMATION
• Media Type: D
• Archive: No

Parkdale Project • 4 ~ Reclamation Permit
2.0 Site-specific Data Collection
A number of visits to the project area were completed as this project progressed. During
these site visits it became apparent, when considering revegetation options, that the soil
available for salvage and redistribution on site may not correspond with that indicated by
the soil survey completed by the SCS. For example, the depth of soil suitable for salvage
from Map Unit 50 was indicated to be from 12 to 60 inches depending upon chemical
considerations. The percent of coarse fragments within the profile of the Kim series
typically does not exceed 15 percent. This unit within the project boundaries, in pazt, is
the area where aggregate is considered to occur at or near the surface and is the location
of the deposit proposed to be mined. It was determined that the nature of the soils on
site, overlying areas proposed for disturbance, should be examined in the field. The
following methodology was used to determine potential salvage depths of suitable
surficial soil materials overlying each NRCS map unit proposed for disturbance.
The SCS survey completed for portions of Fremont County was reviewed to become
familiar with the general edaphic characteristics of the project area. In addition to the
review of existing soils information, project maps were evaluated to locate dominant
features of the project area and probable access routes to and from the acreage to be
evaluated.
Following the review of existing information, field studies were completed. To begin the
field studies, the proposed project area was traversed to become familiar with access
routes and surficial soil conditions characteristic of the site as influenced by topography,
vegetation, and geology. Observations were also made with respect to soil salvage
potentials as expressed through topography and vegetation cover.
Each SCS map unit proposed for disturbance was then located on the ground. Within
each unit, Iransects were walked to determine overall map unit characteristics and to
select a sample point characteristic of the dominant soil of the unit. Sample points were
selected to represent the dominant characteristics of the soils to be disturbed.
At each sample point, the surface soil was evaluated to a depth of from 12 to 18 inches or
to bedrock if such occurred within these depths. Soil parameters assessed included
texture, percent coarse fragment content (by volume), effervescence, and pH. Below the
surface horizons, soils were excavated a depth of 5 feet, bedrock, or auger refusal to
determine general soil depths and characteristics. General information recorded at each
sample site included vegetation characteristics, physiography, slope, and aspect.
Approximately one-half quart of soil material was collected from the surface horizons of
the major soils proposed to be disturbed. Five samples (S-1 through S-5) were collected.
These samples were sent to the Soil and Plant Testing Laboratory on the Colorado State
University campus for analysis. The analyses to be completed consisted of pH, texture
(field method), percent organic matter, NH,-N and NO,-N (ppm), phosphorus (ppm),
potassium (ppm), electrical conductivity (mmhos/cm), and lime estimate.