【Paper】
Extending a Model Area Application of a Waste Collection System to a City-wide Application
――Separate Collection of Plastic Containers and Packaging――
Masako Fukuoka*, Harumi Koizumi* and Hiroshi Takatsuki**
* Architects, Regional Planners & Associates, Kyoto（Osaka Branch Office）
** Environment Preservation Center, Kyoto University
† Correspondence should be addressed to Masako Fukuoka:
（Sumitomoseimei OBP Plaza Bldg. 1-4-70 Shiromi, Chuo-ku Osaka, 540-0001 Japan）

Abstract
Since the full implementation of the Law for Promotion of Sorted Collection and Recycling of Containers and Packaging（The Containers and Packaging Recycling Law）in 2000, numerous local governments have introduced a separate collection system for plastic containers and packaging other than PET bottles. We have gathered information from these localities to grasp the per-capita amounts and composition of separate collection regimes. Then, we analyzed their differences resulting from various collection methods and other factors.
Per-capita amounts of the separate collections are greater in cases where the collection scheme is applied to the whole administrative area, in contrast to where it is carried out in limited “model areas”. This tendency is probably attributable to limited awareness-raising methods associated with model area applications.
Results of household-waste compositional analyses in Neyagawa-city provide supporting evidence for that conjecture: when the model area scheme was extended to the whole area, residents' cooperation increased. Consequently, more than 70％ of plastic bottles, packs and trays were separated appropriately for collection.

Key words: plastic containers and packaging, separate collection, model area application, city-wide application, per-capita amounts