GENERAL38536

• Permit No: C1981013
• IBM Index Class Name: General Documents
• Doc Date: 12/1/1992
• Doc Name: Midterm Review Findings Document
• Permit Index Doc Type: Findings
• Media Type: D
• Archive: No

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'- C) Stipulation No. 50 required the operator to perform archeological
studies in areas having the highest potential, before mining north
of the Purgatoire River. Have these studies been done? Please
update Section 2.04.4, page 2.04-4, and Exhibit 5, Cultural and
Historic Resource Information.
D) Please provide a subsidence survey, a subsidence monitoring program
and a subsidence control plan, as required in Section 2.05.6(6),
for all mining areas, including the area north of Highway 12.
E) The requirements of Section 4.20.1, Subsidence Control, Section
4.20.2, Public Notice, Section 4.20.3, Surface Owner Protection and
Section 4.20.4, Buffer Zones, must be adhered to by the operator.
Please address ali necessary changes to the permit.
F) Under 4.20.1(3), please submit a map showing the present and future
underground mining configuration of the Golden Eagle Mine. Also,
please state the depth of the mining, the angle of draw and how
this angle was obtained. Then, please put onto this mine plan map
the magnitude and lateral limits of the surface expression of the
expected subsidence. This material may be held confidential if
requested by the operator. At the same scale as the mine plan map
just mentioned, please provide a map showing locations of surface
owners' tracts of land, residential buildings and roads. Of
special concern is the area north of Highway 12 and also the area
near the Main North J>`1.
G) The Findings Document for the Permit Revision No.l, dated
June 28, 1990, states on page 32 that WFC will install subsidence
monuments above the first longwall panel to be mined. Also, a
wooden utility shed will be monitored. It further states that
monitoring would be completed quarterly. What is the status of
these requirements, in light of longwall mining north of Highway 12?
H) Rule 4.20.4(1) states that no underground mining will take place
beneath or adjacent to any perennial stream unless the Division
determines that subsidence will not cause material damage to the
stream. On page 7 of the June 28, 1990 Findings Document, it is
stated that there is a perennial stream in Santistevan Canyon. Is
the longwall mining north of Highway 12 beneath or adjacent to the
perennial stream in Santistevan Canyon, and, if so, please locate
in the permit where the Division has given approval for such mining.
3. Hydrology
A) It is stated on page 4 of the 1991 Annual Hydrology Report that the
surface water monitoring well in Santistevan Canyon, SCF-l, is
inactive and that it will be activated when longwall mining begins
under Santistevan Canyon. When was longwall mining begun in this
canyon, and has the well SCF-1 been activated?
8> Please update Table 6, page 2.04-9, State Engineer's Record of
Water Wells; Table 7, page 2.04-11, Results of Well Survey;
Table 8, page 2.04-12, Results of Windmill Survey; and Exhibit 8,
Water Well Information, if applicable.
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