Satisfied customers produce repeat
the Delta Landfill Fire.
In November, 1999 SHA was called to a
construction/demolition landfill that was owned and operated by
Delta Shake and Shingle (DSS) Ltd. Landfill staff had attempted to
manage a fire in the landfill that eventually grew out of control
thereby requiring assistance from the Delta Fire Department. The
fire was contained in the most recently filled portion of the site,
a horseshoe shaped cell located on the north side of the landfill.
The landfill itself had been constructed on soft peat soils. Three
sensitive utilities run adjacent to the site including a high
capacity BC Gas pipeline to the south, and a GVRD forcemain sewer
and water supply line to the north. There was a significant risk
that these utilities could be damaged from slope failures if the
fire was not controlled or extinguished in a geotechnically sound
The situation took a dramatic turn when
the Owner failed to respond to an order issued by the Fire
Commissioner, which forced Delta to declare a state of local
emergency and assume control of the situation. An emergency command
post was established on November 27th, 1999 under the supervision of
the Delta Fire Chief (Mr. Randy Wolsey).
involved constructing two PVC lined pads to extinguish and store hot
material. The pads consisted of a PVC membrane sandwiched between
two layers of sand for protection. All run-off from the pads was
contained, collected and treated as leachate. Extensive geotechnical
monitoring was performed (by Horizon Engineering) throughout the
process to ensure that fire fighting activities did not induce
movement in the underlying soils and threaten neighbouring
utilities. As the material from the fire zone cell was removed, the
side walls were cut back to a 3H:1V slope and capped with clay to
prevent the fire from re-establishing itself outside the
The fire was extinguished by January
19th, 2000 after 125,000 m3 of waste had been excavated.
The total cost of the effort was in the order of $2.2 million.
Restoration activities are currently underway to re-introduce the
waste back into the landfill using proper filling techniques cost an
additional $2.0 milion.
In the Fall of 2001, the consulting
engineers awarded SHA and our subconsultants Horizon Engineering and
Knight Piesold consultants an award of excellence for completing
this challenging project.
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