Gawler 2012-13 Annual Report - page 136

Town of Gawler Annual Report 2012/13
Page 136
introduction • summary • strategic directions •
statutory information
• index
17
4. 2012-2013 airspace consumption
The annual volumetric survey to measure
airspace consumed at the landfill (required
as part of an annual return to the EPA) was
completed at the end of the financial year.
The airspace consumed since commencement
of operations is shown in the table above.
The placement of all baled and general waste
during the 2012-13 financial year has been into
the Stage 2 cell of the landfill with the airspace
consumed during this period representing
105,462m3. The placement of street sweeping
material has also occurred at the northern end of
the Stage 1 cell with airspace remaining “under
the cap” measuring 13,750m3.
The compaction ratio (tonnes of waste per cubic
metre) is slightly down on previous years and
is due primarily to the receipt of uncompacted
‘validated’ material from Sita Resource Co.
This material is semi-processed fuel stock that
is disposed to landfill when servicing is being
carried out to major plant, or in the case of major
plant breakdown.
Airspace Consumption
Period
Airspace
Consumed
(m3)
Tonnage during same period
(t)
Compaction Ratio
(tonnes WASTE Per m3)
2005-06
(including material
11 May from 05 to 30 June 05)
103,395
74,873
0.72
2006-2007
108,630
94,612
0.87
2007-2008
96,600
98,895
1.02
2008-2009
97,740
87,974
0.9
2009-2010
74,560
76,949
1.03
2010-2011
94,520
76,946
0.81
2011- 2012
85,980
74,400
0.87
2012- 2013
105,462
81,994
0.78
TOTAL
766,887
666,643
0.87
(=overall average)
1...,126,127,128,129,130,131,132,133,134,135 137,138,139,140,141,142,143,144,145,146,...175
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