|
Logan Wash Mine Annual Report
<br /> Permit No. M-1977-424
<br /> of these well sites. Eight wells were located and identified within the mine area and within Logan
<br /> Wash. Several other wells were located at some distance from the mine(see Figure 3 and Table
<br /> 3). Of the 8 identified wells in the mine area,one well, Well LWCW-IA,will remain in place as
<br /> a compliance monitoring well until final permit closure. Well LWCW-lA is sampled for water
<br /> quality on a semi-annual basis.
<br /> Wells LW-108,LW-112, and LW-242 were abandoned in 2005 in accordance with Colorado
<br /> Division of Water Resources rules. The other 4 wells,LW-32, LW-45,LW-116, and LW-22A,
<br /> remain in place in the case they may be of value in the evaluation of mine closure investigations.
<br /> Casing access and downhole conditions are unknown for wells LW-32,LW-45, and LW-116.
<br /> Well LW-22 has been accessed in the past for monitoring.Reconnaissance to date has not
<br /> revealed any other monitoring wells within the permit area and the Logan Wash drainage.
<br /> Reconnaissance for wells located outside the permitted area in distant drainages was conducted in
<br /> past reporting periods. Wells LW-102 and LW-243 were located in Smith Gulch, Well LW-103
<br /> was located in Kelly Gulch,and Well LW-104 was located in Riley Gulch. Well LW-121,
<br /> apparently constructed in Bowdish Gulch,was not located after a thorough search and is assumed
<br /> abandoned. Wells LW-102, LW-104 and LW-243 were abandoned in 2007. Table 3 shows the
<br /> status of well abandonment as of this reporting period.
<br /> 2.4 Status Summary
<br /> Reclamation areas released of warranty by DRMS include: Areas 5, 7, 21, and 22,and areas B1,
<br /> B4,B6, B9, B 10, and B 11 (B areas refer to Logan Wash Road realignments)on September 300',
<br /> 1986; and areas 6, 8,9, 12, 14, 15, 16, 17, 19,20 and a portion of Area 13 (roads)on January 120',
<br /> 2006.
<br /> Areas in a state of reclamation(revegetated)but not submitted for release to DRMS in the permit
<br /> include Areas 1, 2, 3,4, 10,and the 0.65 acre Soil Barrow Area,portions of Area 13,and road
<br /> Areas B2,B3, B7 and B8. Areas 1 through 4 include the Upper and Lower Mine Dumps(face
<br /> areas),Upper Mine Bench, Lower Mine Bench,and the Research Mine Bench and Dump,
<br /> respectively.Area 10 is the former Helo Pad. Area 13 is Miscellaneous Access Roads.
<br /> Area 1,the Upper and Lower Mine Dump faces(13.4 acres)were revegetated during 2003-2005.
<br /> Area 2,the Upper Mine Bench(0.7 acres)was revegetated in 2004 and 2005. Area 4,the
<br /> Research Mine Bench(2.7 acres)and Dump(1.5 acres),Area 10,the former Helo Pad(0.2 acres),
<br /> and the Upper Bench Road and Lower Access Road areas of Area 13 were revegetated in the fall
<br /> of 2005. However,cattle grazing and dry conditions prevented the lower portion of the Lower
<br /> Access Road from revegetating.This was not reseeded as the road is now being used to monitor
<br /> Well LWCW-IA on a regular basis.
<br /> Area 23 is the Evaporation Pond and Pipeline. The portion of Area 23 that has been revegetated is
<br /> limited to the retort water pipeline. The portion of Area 23 not revegetated or reclaimed is the
<br /> Settling Pond and Evaporation Pond. According to the 1985 annual report,the original disturbed
<br /> acreage of Area 23 was 14.9 acres, 5.1 acres of which was reclaimed before 1985, leaving 9.8
<br /> acres remaining to be reclaimed.Because the pond was not formally added to the permit until
<br /> 2008, no reclaimed acreage has been released.
<br /> Area 13, Miscellaneous Access Roads(Table 2), includes a number of older roads that have been
<br /> reclaimed. In this report the Mine Bench and Portal roads referred to in Table 2 consist of the
<br /> Lower Access Road(1.0 acres), Upper Access Road(5.3 acres),Upper Bench Road(1.4 acres not
<br /> including bench),and Lower Bench Road(0.9 acres not including bench).
<br /> Western Water & Land, Inc. 4
<br />
|