Week ending February 18, 2006
The landfill gas collection system continues with installation of the
gas piping system. The gas blower is expected to be delivered in a few
weeks. Some H2S odors have been noticed along 167th Street due to
excavating the gas pipe lines in the landfill filling area. APAC has
been directed to cover the gas lines as soon as installed. The gas
pipelines should be buried and covered in one - two weeks.
The contact water collection and treatment continues with the
draining of the west and south seeps at 15 gpm into the lower east pond.
The lower east pond is treated with sodium hydroxide and hydrogen
peroxide as needed. Water level measurements within the monitoring water
wells in the landfill have shown a drop in contact water level
corresponding to the drainage flow of 15 gpm (gallons per minute).
All the compacted clay cover over the landfilled areas is now in
place, which provides for improved drainage of rainwater and minimizing
H2S escaping through the cover.
The air monitoring for the perimeter and source monitors is working
well. APAC is still preparing the air monitoring telemetry system from
the three source H2S meters located inside the landfill.
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