10 Draft Integrated Waste Management Plan - City Council - City of ...

2012 Davis Integrated Waste Management Plan
As Figure M-1 and Table M-1 show, removing the food scraps from the commercial and residential trash is
estimated to achieve a 51.8% diversion, based solely on services provided by DWR. This does not include data
from self-haul loads going to the landfill, recycling centers and composting facilities, nor does it take into
account waste reduction and reuse options. CalRecycle’s per capital disposal rate data takes these other
measures into account, as they calculate based on tonnage of trash sent to the landfill. This tonnage will go
down as a result of waste reduction, reuse, recycling, composting and all diversion methods—those that are
captured in DWR’s numbers and those that are not.
Another way to estimate the potential food scrap diversion is to look at the data from the Commercial Food
Scrap Pilot Program. Figure M-2 and Table M-2 below use data gathered from the pilot to estimate the
potential of food scrap recovery. There has been a gradual increase in the number of participants in the
Commercial Food Scrap Pilot Program, so to accurately portray the collection of food scraps, it is better to use a
smaller scale of data. Instead of using a year’s worth of data reports, a single quarter (3 rd quarter 2012) is used
for this comparison. In October 2012, there were 26 participants signed up for the food scrap program. These
26 businesses collected a total of 58.66 tons of food scraps from July 2012-September 2012 (approximately 2.3
tons of food scraps per business). There are approximately 181 large food scrap generating businesses in town
(restaurants, schools, hospitals, etc.). If each of these businesses also generated 2.26 tons of food scraps during a
single quarter, there could be another 349.68 tons of food scraps potential recoverable. This potential recovery
is shown in the chart and table below. Residential food scrap numbers shown are estimated as 25.4% of the
residential waste stream, as reported by CIWMB’s 2008 Statewide Waste Characterization Study.
FIGURE M-2 JULY – SEPTEMBER 2012 DWR COLLECTION DATA WITH POTENTIAL FOOD SCRAP RECOVERY
Commercial
Garbage 23.0%
Roll-Off Boxes
15.8%
Recycling 15.0%
DRAFT
Residential
Garbage 14.7%
Inerts 4.1%
Yard Materials
18.2%
Commercial
Food Scraps
Collected 0.5%
Remaining
Commercial
Food Scraps
3.0%
Residential Food
Scraps 5.0%
C&D 0.9%
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