Topic Area: Solid Waste Management
Geographic Area: Maine-U.S.
Focal Question: How do variable cost pricing techniques affect
disposal volume and costs?
Sources:
(1) Miranda, M.L., Everett, J., Blume, D., and Roy, B.,
Market-Based Incentives and Residential Municipal Solid Waste,
Journal of Policy Analysis and Management, Vol.13, No.4, 1994; pgs.
681-697.
(2) Sequino, S., Criner, G., Suarez, M., Solid Waste Management
Options for Maine: The Economics of Pay-By-The-Bag Systems, Maine
Policy Review, Vol.4, No.2, 1995; pgs. 49-58.
Reviewer: Robert W. Paterson, Colby College '96
Review:
Rising disposal costs and increased stringency in federal regulation
are forcing municipalities to re-evaluate, and in some cases adopt
integrated solid waste management (SWM) plans. The implications of
these plans extend beyond traditional land-use considerations to
include air and water pollution and energy consumption. Traditional
SWM plans can be grouped into two broadly defined categories: (1)
source reduction or waste minimization (2) waste diversion or
recycling/composting programs. This case study focuses on the former,
drawing upon a comparative study conducted in Maine.
In the past, the predominant portion of SWM plans nationwide have
created little incentive for households and businesses to constrain
waste disposal. In many municipalities in Maine, a flat annual
disposal fee is embodied in property taxes, where it is essentially
hidden from the waste producer. As a result social costs of the
"extra waste" are imposed in the form of higher landfill tipping fees
and increased labor and collection costs. In essence, consumers and
business face a zero marginal cost to waste production, but the towns
do not.
Rectifying this condition provides the motivation for progressive
unit-based pricing schemes based on volume or weight. In such
programs, special bags, stickers or cans are purchased from the town
(few are privately operated). The prices are predetermined and
account for all costs related to their disposal. In effect, this
creates a direct incentive for residents and commercial agents to
reduce waste production, and incidentally, encourages greater
participation in recycling and composting programs, should they also
be in operation. Although traditional economic theory would argue
that marginal cost pricing would generate the most efficient
outcomes, many communities have adopted average cost or two-tier
pricing systems. In average cost programs, waste volume, total costs,
and expected number of disposal units for the upcoming year are
estimated, from which a unit price is derived. Two-tier pricing
involves an initial flat fee for an established minimum level of
disposal service, beyond which a unit-based fee applies. In general,
these systems will be less efficient than marginal-cost pricing. The
degree to which will depend on the precision of average cost
estimates and minimum service determination.
In 1994, an empirical study of the affects of unit-based systems in
Maine was conducted by the Smith Policy Center. Twenty-nine of the 50
municipalities in the state which have adopted related programs were
analyzed relative to a "control" group of communities that maintain
traditional flat rates. The researchers employed multivariate
regression analysis in cross-section to avoid distortions in waste
production created by changes in local economic activity. The
analysis controlled for demographic conditions and individual program
characteristics were controlled for.
72% of the unit-based programs were organized according to volume,
with fees ranging between $.50 and $2.00 per 30-35 gallon container.
21% of the programs were based on weight, with costs from $.02 to
$.06 per pound. The remaining 7% used some combination of weight and
volume measures or a two-tier system. The following chart provides
comparative characteristics of the two groups in 1993:
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% of municipalities which collect waste curbside |
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% of municipalities with composting programs |
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Per capita recycling educational expenditures |
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% of municipalities with mandated recycling |
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% of municipalities which collect recyclables curbside |
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% of municipalities using commercial landfill |
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Avg. annual residential waste disposal (tons/person) |
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Avg. annual municipal SWM costs per capita |
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Avg. annual municipal plus total household SWM costs per capita |
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