2016-02-03_PERMIT FILE - C1981038 ‎(2)‎

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 2/3/2016
• Section_Exhibit Name: Volume 1 2.04 Environmental Resources
• Media Type: D
• Archive: No

§2.09 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING ACTIVITIES --
MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES
2.09.8 Climatological Information
(1) Climate Characteristics of the North Fork Valley (COnt'd.)
(b) and (c) (Cont'd.)
The operator compiled snow course data in 1982 - 1985. The courses are
located in the Stevens Gulch Drainage Basin and are used to confirm snow
melt v.s. rainfall data. Enough data was collected td confirm existing
government published data. The operator subsequently discontinued
monitoring of snow courses.
In response to Stipulation Number 5 of the Division's proposed Decision
and Findings of Compliance dated June 29, 1985, the operator began
operating an evaporation pan station at the Stevens Gulch well field. Data
was to be gathered until the hydrologic budget for the drainage basin was
confined in order to provide a basis for distinguishing between natural
and mine related water losses within the basin.

Subsequent evaluation of the evaporation pan and related data was
conducted by the operator in March of 1992. The operator concluded that
insufficient data had been collected to define a detailed water budget for
the Stevens Gulch drainage capable of distinguishing between natural and
mine related water losses for specific resources within the basin. The
operator further concluded that the scope and quantity of additional data
required to accurately assess the water budget was prohibitive and of
limited value given that the pre-mining water budget was not accurately
defined and therefore no basis for comparison exists. Based upon these
conclusions, the operator applied to the Division of Minerals and Geology
for a technical revision (TR-21) to eliminate the requirement to operate
the evaporation pan. The technical revision was subsequently approved by
the Division.
The operator [used] two high volume particulate samplers for sampling
large volumes of air for the collection of suspended particulate matter.
These samplers [were] located as shown on the Bowie No. 1 Mine Facilities
Map No. 8A-8. Each filter for these units was weighed and then sent to the
operator and placed in the samplers. The units were set to run on the
Colorado Department of Health, Air Pollution Control Division's 9-day
schedule. After running for 24 hours, the filters were stored for future
weighing and analyses. The results of the analyses were then summarized in
a report. For additional information, see Climatology Appendix, Volume 9.
Tables 2.09-17 & 18 in the Climatology Appendix, Volume 9, set forth the
Air Quality Data Reports on the total suspended particulates measured in
g/m' since June, 1979, at the two monitoring stations. Data collected from
1979 to 1983 are also included. A maximum 24 hour particulate loading of
69 u/m' is fairly close to the national mean for non-urban regions.
The ability to define, measure, and control anthropogenic (man-caused)
visibility impairment depends upon several fundamental factors. These
include: a) the
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