INSPEC11848

• Permit No: M1977215
• IBM Index Class Name: Inspection
• Doc Name: MINERALS PROGRAM INSEPECTION REPORT
• Inspection Date: 8/13/1993
• Media Type: D
• Archive: No

(Page 2)

MINE ID ~ OR PROSPECTING ID ~ M-77-215
INSPECTION DATE 8-13-93 INSPECTOR'S INITIALS ACS
OBSERVATIONS
The Bulldog Mine is in the process of completing final reclamation. The observations made
during this inspection are categorized by location within the various permitted areas.
Vent Raise
The vent raise is collared with a large metal pipe and concrete. The operator proposes to
seal the raise by cutting off much of the pipe protruding above the ground surface, then
sealing the opening with boiler plate and reenforced concrete. The level area where the
raise is located will be eloped up to the adjacent road, and the disturbed area revegetated.
The operator should take representative photographs of the raise closure prior to covering
it with dirt.
Lower Tails
The lower tailing dam had been breached this summer. The aide elopes associated with the
breach were measured with an abney level to be approximately 25°, or 2:1, with elope lengths
of approximately 30 feet. These elopes are acceptable to the Division only if they can be
successfully revegetated. It is left to the operators discretion as to whether to attempt
to revegetate the current elopes, and delay bond release if the attempt fail a, or to cut the
slopes back to 3:1 to better ensure successful revegetation.
The diversion ditch around the lower pond ie proposed to remain ae a permanent feature. The
operator must submit hydrologic analysis that will demonstrate that the ditch is capable of
passing the probable maximum precipitation (PHP) event for the mine location.
Direct revegetation of the tailing at the lower pond continues to look very good. The
operator is referred to Rule 6.5(1) of the Mineral Rules and Regulations, which states:
In those areas were revegetation ie part of the reclamation plan, land
shall be revegetated in such a way as to establish a diverse, effective,
and long-lasting vegetative cover that is capable of self-regeneration
without continued dependence on irrigation, soil amendments or fertilizer,
and is at least equal in extent of cover to the natural vegetation of the
surrounding area.
This is the standard which will be applied to reclaimed areas at the Bulldog Hine at the time
bond release ie requested.
The operator has back-filled and reclaimed the monitoring wells below the tailing dam. Final
samples were collected and analyzed from the three wells that were not dry on June 25, 1993.
Cyanide was below detection limits for all three samples. The last time that monitoring well
WP-15 contained sufficient water for sampling (11-20-89) a detectable concentration of
cyanide was reported (0.2 ppm free CN-). Well completion records for WP-15 contained within
Division files show that the well was completed to bedrock, alleviating some of the concern
that contaminated groundwater could be passing beneath the well (although the upper part of
the bedrock in the area of the well is quite permeable). There is no evidence to suggest
that cyanide contaminated water is entering the ground water system beneath the pond.
Upper Tails
At the time of this inspection, gravelly soils were being dumped on the tails in order to
provide positive drainage toward the dam breach. Once the area of the upper tails ie eloped
for drainage, the area will be covered with Boil from the lower dam breach, and revegetated.
Portals and Mill Site
Building demolition at the mill site was on-going at the time of this inspection. Once the
buildings have been removed, the compacted mill area soils should be ripped to a depth of 2
feet prior to topsoil placement. All concrete foundations that are to be left in place must