INSPEC44096

• Permit No: M1977348
• IBM Index Class Name: Inspection
• Doc Date: 3/12/2004
• Doc Name: Insp Rpt
• From: DMG
• To: Holcim ‎(US)‎ Inc.
• Inspection Date: 3/8/2004
• Media Type: D
• Archive: No

MINE ID # OR PROSPECTING ID#: M-1977-348 PAGE: 2
INSPECTION DATE: 3-8-03 INSPECTOR'S INITIALS: ACS
OBSERVATIONS
Holcim began demolition of the cement plant during late summer of 2003. The
Division of Minerals and Geology (DMG) approved disposal of demolition debris
in one of the quarry pits through technical revision TR-004 to the mined land
reclamation permit. Several layers of debris have been dumped into the quarry
pit and bedded with fine-grained soil; Gordon Benton of Holcim contacted DMG
to do an inspection at this interim point in the facility demolition and
debris disposal project.
The ongoing demolition and debris management operations were inspected first.
The demolition contractor is Cherry Demolition out of Houston Texas. The
following demolition equipment was observed in use:
• Numerous hydraulic excavators with various attachments including shears,
hammers, and claw buckets.
• A large crane (Link Belt) with wrecking ball.
• Explosives.
• Cutting torches. All rebar is cut off flush from concrete rubble. The
rebar is then either recycled as scrap or disposed in the quarry pit.
It was observed that the contractor
stockpiling the debris for its final
metal, with the exception of rebar,
piles were observed throughout the
recycled is bundled by compacting it
excavators. To date, 8600 tons of
site; this number does not include
copper, and aluminum.
is doing an excellent job of sorting and
disposition. Virtually all of the scrap
will be recycled. Sorted scrap metal
demolition project area. Rebar to be
into a ball using the claw buckets on the
scrap steel have been shipped from the
the specialty metals such as stainless,
Wood and other non-inert materials are prohibited from disposal in the quarry
pit. These materials make up a small fraction of the total waste stream, and
it was observed that wood, insulation, etc. had been sorted out and stockpiled
separately for staging to an offsite landfill. A small amount of wood was
observed in the rubble stacked in the quarry pit disposal site. The amount of
wood observed is insufficient to destabilize the debris fill or cause
environmental problems. However, the wood observed could easily be eliminated
from the fill through periodic screening by laborers and hand collection.
Holcim will notify the contractor to redouble their efforts in this regard,
and DMG anticipates that no wood will be present in the fill during future
inspections.
Most of the debris placed in the quarry pit is concrete rubble bedded with
fine-grained soil. It had been anticipated that soil for debris bedding would
have to be borrowed from overburden stockpiles. However, sufficient soil has
been derived from demolition of buildings and site clean up such that very
little overburden has been hauled in as bedding. Holcim is permitted to
dispose machinery, rebar, and other metal in the pit. The terms of the
approval are that the metal will be free of lead based paint, lubricants,
solvents, and other potential contaminants. However, the contractor has been
sufficiently successful in the recycling of scrap that very little metal other