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Carnegie Mellon University will use both weight and volume measurements
for different areas of campus. Custodians will collect recyclable
material from bins in the residence halls and take it to a central
location outside each hall. Bags of co-mingled glass and cans are
counted by the truck driver and brought to an enclosed roll-off.
When the roll-off is full, it is taken to the local MRF and weighed.
Since some of this material will be from academic buildings, the
weight of the material from the residence halls must be estimated
based on overall tonnage and the bag counts. Paper and cardboard
from residence halls is collected in 96-gallon drums and 2-yard
bins that are emptied once or twice per week. Weight of each pull
will be estimated using a combination of visual assessment and the
CURC volume to weight conversion guide. Material from dining facilities
is taken to a dumpster and a trash compactor, and consists mainly
of cardboard. Some of this material is from academic buildings,
so the weekly log report will be checked and used to make weight
estimations. According to CMU’s department of housing there
are approximately 3,200 students living on-campus as of January
1, 2004. This number will be used to calculate pounds recycled per
student.
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