EXTINGUISHING THE DELTA SHAKE AND SHINGLE LANDFILL FIRE
The Delta Shake and Shingle Landfill is a privately run construction
demolition landfill located in North Delta, near Vancouver, British
Columbia. The site was developed on very soft foundation conditions
including organic peats and unconsolidated clays and silts. The
landfill commenced operations in 1989. It was permitted to receive
20,000 tonnes of waste per year.
By November of 1998,
almost the entire 13 ha landfill footprint was covered with waste
to a height of 18 m above ground, with the exception of a horseshoe
shaped area on the north side of the landfill
(see photo1). The landfill was developed
in 3 m high lifts that were capped with soil and/or hog fuel (shredded
wood waste) intermediate cover. The horseshoe shaped area was
the original location for the scale and administration facilities.
To maximize revenues, the new landfill owner who purchased the
property relocated the scale and offices onto an adjacent property
north of the railway tracks and commenced to fill in the horseshoe.
bottom of the horseshoe was first covered with a 3 to 4.5 m thick
lift of inert concrete and blacktop demolition material from the
Expo 86 site. Over the next 10 months the landfill received a
steady stream of demolition waste including crushed dimensional
lumber, tar roofing shingles, plastic and metal.
As shown in (Photo2),
incoming waste was dumped into the horseshoe from above and pushed
into place with a bulldozer. As a result, the waste was loosely
deposited in a single 15 m deep layer through out the entire horseshoe
cell without proper compaction or soil firebreaks, contrary to
requirements of the operating permit.
After issuing several
non-compliance citations, the Ministry of Environment, Lands and
Parks (MoELP) ordered the landfill to close on November 9th 1999.
By that time, over 250,000 m(3) of waste were deposited in the
Initial Fire Response