' social change
clean environment
© Printed on paper that contains at least 50 percent postconsumer fiber.
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The following descriptions introduce and define the main activities classified under ISWM. •
WASTE PREVENTION Waste prevention—often called source reduction—means reducing waste by
not producing it. Examples of waste prevention would include purchasing durable, long-lasting goods and
seeking products and packaging that are as free of toxic substances as possible. It can be as simple as switch-
ing from disposable to reusable products, or as complex as redesigning a product to use fewer raw materials
or to last longer. Because waste prevention actually avoids waste generation, it is the preferred waste man-
agement activity. Overall, waste prevention conserves resources, protects the environment, and prevents the
formation of greenhouse gases.
RECYCLING Recycling makes use of materials that otherwise would become waste fay turning them into
valuable resources. Recycling helps reduce greenhouse gas emissions, in part, by diverting waste from land-
fills. In some countries, a great deal of recycling occurs before the waste reaches the landfill. Scrap dealers
buy directly from households and businesses, wastepickers or scavengers collect materials from waste bins,
and waste collectors separate materials that can be sold as they load their trucks. Governments can build on
these practices by providing support to organize and improve recycling efforts.
COMPOSTING Another form of recycling is composting—the controlled aerobic biological decomposi-
tion of organic matter, such as food scraps and plant malter, into humus, a soil-like material. -Compost acts
as,a natural fertilizer by providing nutrients to the soil, increasing beneficial soil organisms, and suppressing
certain plant diseases, thereby reducing the need for chemical fertilizers and pesticides in landscaping and
agricultural activities. Organic materials often comprise a large portion of the solid waste stream, particularly
in communities that rely heavily on tourism. Composting can be particularly helpful to communities manag-
ing their waste and.thus reducing greenhouse gas emissions.
COMBUSTION Combustion is the controlled burning of waste in a designated facility to reduce its vol-
ume and, in some cases, to generate electricity. Combustion is an ISWM option for wastes that cannot be
recycled or composted, and is sometimes selected by communities where landfill space is limited. While the
combustion process can generate toxic air emissions, these can be controlled by installing control equipment
such as acid gas scrubbers and fabric filters in combustors. Combustion of solid waste can help reduce
amount of waste going to landfills. It also can reduce reliance on coal, one of the fossil fuels that produces
greenhouse gases when burned.
LANDFILLING Uncontrolled dumping of waste can contaminate ground-water and soil, attract disease-
carrying rals and insects, and even cause fires. Properly designed, constructed, and managed landfills pro-
vide a safe alternative to uncontrolled dumping. For example, to protect groundwater from the liquid that
collects in landfills (leachate), a properly designed landfill has an earthen or synthetic liner. As waste decom-
poses, it emits methane, a greenhouse gas that can also cause fires. To prevent fires, a properly designed
landfill should have a way to vent, burn, or collect methane. Landfill operators can also recover this
methane—thereby reducing emissions—and generate electricity from the captured gas.
United States Environmental Protection Agency
EPA530-F-02-026
(5306 W)
Solid Waste and Emergency Response
May 2002
www.apa.gov/globalwarming
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IV
BASURA, GARBAGE, GOMI, ORDURES, AFVAL, SPAZZATURA-
whatever people call it, solid waste is a problem that must be properly managed. While it to generally under-
stood that proper waste management helps protect human health and the environment and preserve natural
sources many do not realize that solid waste also impacts climate change. The manufacture, d^nbuuon,
' and use of products-as well as the disposal of the resulting waste-all result in emissions of atmos-
pheric gases called "greenhouse gases" that affect the Earth's climate. When orgamc waste
decomposes in landfills and uncontrolled dumps, it produces methane, one of the
major greenhouse gases contributing to climate change. Waste generation
increases with population expansion and industrialization. Countries in
Asia Latin America, and Africa account for nearly 40 percent of annual
methane emissions from landfills, whichis equal to 37 million met-
ric tons of carbon dioxide equivalent (MTCO2e) or the amount
of air emissions from more than 102 million automobiles. You
can reduce greenhouse gas emissions, however, through prop-
er solid waste management (for a more detailed explanation
of the relationship between climate change and solid
waste, see the What is Integrated Solid Waste Management?
fact sheet).
Solid waste should be managed through a number of
activities—waste prevention, recycling, composting,
controlled burning, or landfilling. Using a combination
of these activities together in a way that best protects
your community and the local environment is referred
to as integrated solid waste management (ISWM). An
ISWM program can help reduce greenhouse gas emis-
sions and slow the effects of climate change. This folder
and its accompanying fact sheets are designed for govern-
ment officials, nongovernmental organizations, and others
involved in planning and communicating the benefits of
ISWM programs. The fact sheets will introduce you to impor-
tant issues you will need to address in planning a successful
ISWM program. These fact sheets also assist you in planning an
ISWM program by providing guidelines for recycling and composting,
waste collection and transport, and waste disposal,, (landfilling and
combustion).
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IP?
In the United States, the Environmental Protection Agency (EPA) is the national agency that works to protect
human health and the natural environment. EPA establishes and enforces national environmental protection
standards, conducts research on environmental problems, and assists other organizations rn protecting the envi-
ronment through grants, technical assistance, and other programs.
EPAs Office of Solid Waste () promotes and supports residential, commercial and gov-
ernmental efforts to reduce waste, prevents future waste disposal problems by establishing effect^ ***"**'
and cleans up areas where wastes may have spilled, leaked, or been improperly deposed of toi axdmonOSWs
Climate and Waste Program works to prevent climate change by informing the public of and studying the Imk
between solid waste and greenhouse gas emissions. To support efforts to reduce greenhouse gases globally, the
Climate and Waste Program provides outreach and technical assistance to other countnes.
EPAs Office of International Activities () manages the Agency's involvement in interna-
tional policies and programs that cut across EB& offices and regions. More generally, OIA also.provides leader-
ship and coordination at EPA and acts as the focal point on a variety of international environmental matters.
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What Is Integrated Solid
Waste Management?
ihis fact sheet provides an overview of options for managing solid
waste, identifies the important issues you should consider when
planning for solid waste management, and describes the link between
solid waste management and climate change. The other fact sheets in this series
include:
• How To Establish Recycling and Composting Programs
• What Are the Components of Waste Collection and Transport?
• What Are the Options for Waste Disposal?
Why Is Solid Waste Management a Challenge?
Waste generation increases with population expansion and economic development.
Improperly managed solid waste poses a risk to human health and the environment.
Uncontrolled dumping and improper waste handling causes a variety of problems, including
contaminating water, attracting insects and rodents, and increasing flooding due to blocked
drainage canals or gullies. In addition, it may result in safety hazards from fires or
explosions. Improper waste management also increases greenhouse gas (GHG) emissions,
which contribute to climate change (for more information on climate change and the impacts
from solid waste, see next page). Planning for and implementing a comprehensive program
for waste collection, transport, and disposal—along with activities to prevent or recycle
waste—can eliminate these problems.
What Is Integrated Solid Waste Management?
Integrated Solid Waste Management (ISWM) is a comprehensive waste prevention, recycling,
composting, and disposal program. An effective ISWM system considers how to prevent,
recycle, and manage solid waste in ways that most effectively protect human health and the
environment. ISWM involves evaluating local needs and conditions, and then selecting and
combining the most appropriate waste management activities for those conditions. The
major ISWM activities are waste prevention, recycling and composting, and combustion and
disposal in properly designed, constructed, and managed landfills (see Figure 1). Each of
these activities requires careful planning, -financing, collection, and transport, all of which are
discussed in this and the other fact sheets.
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Waste Prevention. Waste prevention—also
called "source reduction"—seeks to prevent
waste from being generated. Waste prevention
strategies include using less packaging, designing
products to last longer, and reusing products and
materials. Waste prevention helps reduce
handling, treatment, and disposal costs and
ultimately reduces the generation of methane.
Recycling and Composting. Recycling is a
process that involves collecting, reprocessing,
and/or recovering certain waste materials (e.g.,
glass, metal, plastics, paper) to make new
materials or products. Some recycled organic
materials are rich in nutrients and can be used to
improve soils. The conversion of waste materials
into soil additives is called composting. Recycling
and composting generate many environmental
and economic benefits. For example, they create .
jobs and income, supply valuable raw materials
to industry, produce soil-enhancing compost,
and reduce greenhouse gas emissions and the
number of landfills and combustion facilities.
Disposal (landfilling and combustion). These
activities are used to manage waste that cannot
be prevented or recycled. One way to dispose of
waste is to place it in properly designed,
constructed, and managed landfills, where it is
safely contained. Another way to handle this
waste is through combustion. Combustion is the
controlled burning of waste, which helps reduce
its volume. If the technology is available,
properly designed, constructed, and managed
landfills can be used to generate energy by
recovering methane. Similarly, combustion
facilities produce steam and water as a byproduct
that can be used to generate energy.
Developing a Plan for Integrated
Solid Waste Management
Planning is the first step in designing or improving
a waste management system. Waste management
planners should, for example, take into
consideration institutional, social, financial,
economic, technical, and environmental factors (see
Table 1). These factors vary from place to place.
Based on these factors, each community has the
challenge of selecting the combination of waste
management activities that best suits its needs.
Because integrated solid waste management involves
both short- and long-term choices, it is critical to
Figure 1—Integrated Solid Waste Management
;:||s:::[Recyclmg
•Irf;', and
^"Composting
DisppIaC
^__ ,._j_ _-, -Ij-w-,,
and iH:, •;
Combustion)
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What Is the Relationship Between
Climate Change and Solid Waste?
WHAT IS THE GREENHOUSE EFFECT?
The Earth's atmosphere contains many types of gases,
including those known as "greenhouse gases," which
hold in the sun's warmth (see text box). Scientists call
this naturally occurring phenomenon the "greenhouse
effect." Greenhouse gases help regulate global
temperatures. Certain human activities such as
burning fossil fuels and dumping solid waste,
however, produce additional greenhouse gases and
upset the natural balance by raising global
temperatures.
WHY SHOULD I BE CONCERNED ABOUT
GREENHOUSE GAS EMISSIONS?
Greenhouse gas emissions are slowly changing the
Earth's climate. The Earth has already become slightly
warmer in the past 100 years and will continue to
become warmer. This could cause serious human
health and environmental consequences because a
warmer climate may cause more frequent and severe
heat waves, damage agriculture, and cause droughts
in some places and floods in others.
HOW DOES SOLID WASTE IMPACT CLIMATE
CHANGE?
Even before a material or product becomes solid
waste, it goes through a long cycle that involves
removing and processing raw materials,
manufacturing the product, transporting the materials
and products to markets, and using energy to operate
the product. Each of these activities has the potential
to generate greenhouse gas emissions through one or
more of the following means:
• Energy consumption. Extracting and processing
raw materials, manufacturing products, and
transporting materials and products to markets all
generate greenhouse gas emissions by consuming
energy from fossil fuels.
• Methane emissions. When organic waste
decomposes in landfills, it generates methane, a
greenhouse gas:
• Carbon storage. Trees absorb carbon dioxide, a
greenhouse gas, from the air and store it in wood
through carbon sequestration. Waste prevention
and recycling of wood and paper products allow
more trees to remain standing in the forest, where
they can continue to remove carbon dioxide from
the air, which helps minimize climate change
impacts.
Different wastes and waste management activities
have varying impacts on energy consumption,
methane emissions, and carbon storage. For example,
recycling reduces greenhouse gas emissions by
preventing methane emissions from landfills or open
dumps and by preventing the consumption of energy
for extracting and processing raw materials.
Communities that are looking for ways to help
prevent climate change can start by implementing an
integrated solid waste management program.
WHAT ARE GREENHOUSE GASES?
Some greenhouse gases—such as water vapor,
carbon dioxide, methane, nitrous oxide, and
ozone—occur naturally in the atmosphere, while
others result from human activities.
Carbon dioxide is released to the atmosphere
when solid waste, fossil fuels (oil, natural gas, and
coal), and wood and wood products are burned.
Methane is emitted during the production and
transport of coal, natural gas, and oil; the
decomposition of organic wastes in municipal solid
waste landfills; and by livestock. Nitrous oxide is
emitted during agricultural and industrial
activities, as well as during the combustion of solid
waste and fossil fuels.
Each greenhouse gas differs in its ability to trap
heat in the atmosphere. Methane traps over 21
times more heat than carbon dioxide, and nitrous
oxide absorbs 310 times more than carbon dioxide.
The higher the heat trapping potential of the gas,
the greater the impact on climate change. Efforts
to decrease emissions of these gases help reduce
climate change impacts.
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operations of solid waste management activities.
Each level of government may have responsibility
in your ISWM plan: national governments
typically set standards for solid waste
management; the state, provincial, or regional
governments may help monitor and enforce these
standards; and local governments often play the
primary role of managing solid waste activities on
a daily basis. All levels may also provide funding
for solid waste management activities. Two
primary costs must be considered in any waste
management system: initial capital costs (to
purchase equipment or construct new facilities)
and ongoing operations and maintenance costs.
These costs can be funded in a number of ways
including private equity, government loans, local
taxes, or users fees.
Implementing an Integrated Solid
Waste Management Plan
Once you have developed and written your solid
waste management plan, you can begin to
implement the various combinations of waste
management activities. Implementing an ISWM
plan is an ongoing process, so expect to make
adjustments to the plan along the way. Always
evaluate system inefficiencies and make
adjustments to improve or expand solid waste
management services. Figure 2 (on back page)
illustrates how you can implement an ISWM
plan. Some of these questions may have been
answered during development of the ISWM plan,
but it is important to see how they fit into the
comprehensive implementation process. Equally
important, it emphasizes the need to provide
public education and keep the community
involved in every step of the process.
Be flexible and creative when implementing your
plan. If you are not making progress in a certain
area, be prepared to reevaluate components of
your plan. It is helpful to keep in rnind the
ultimate goal of ISWM: to improve human health.
and protect the environment.
DEFINITIONS
Combustion: Refers to controlled burning of waste with environmental control technology to
reduce the waste volume and generate energy.
Composting: The controlled aerobic biological decomposition of organic matter, such as food scraps
and plant matter, into humus, a soil-like material.
Aerobic: Decomposition process in the presence of oxygen (see "composting").
Anaerobic: Decomposition process in the absence of oxygen (see "methane").
Landfill: Disposal site for nonhazardous solid wastes. The waste is spread into layers, compacted to
reduce its volume, and covered by material such as clay or soil, which is applied at the end of each
operating day.
Methane: Gas generated when wastes in a landfill decompose anaerobically; comprises
approximately 50 percent of the gases emitted from landfills.
Recycling: The act of collecting, reprocessing, and/or recovering certain waste materials to make
new materials or products
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set achievable goals. While developing your ISWM
plan, you should identify goals or objectives (e.g.,
protect human health, protect water supplies,
eliminate open dumping, increase recycling or
composting). The ISWM plan will help guide you
through the implementation process. Do not neglect
to ask for the community's input in developing your
plan, so as to ensure an informed public and to
increase public acceptance.
Government plays an important role in developing
and enforcing waste management standards,
providing funding, and managing day-to-day
Table 1 - Important Questions to Consider and Steps to Take When Developing
an Integrated Solid Waste Management Plan
o CONSIDER: 53STEM ta
Institutional
(laws and
processes)
Are existing laws and
policies adequate to
allow the government
to properly implement
ISWM?
Establish a national policy and pass laws on solid waste
management standards and practices.
Identify the roles and responsibilities of each level of
government.
Ensure the local government has the authority and resources to
implement an ISWM plan.
Social
(local customs and
religious practices,
public education)
What types of waste
does your community
generate and how it is
managed?
Encourage citizen participation in all phases of waste
management planning to help gain community awareness,
input, and acceptance.
Financial
(funding)
Where will you go to get
funds for creating a
solid waste
management system?
Identify sources that can provide funding for solid waste
management, including general revenues or user fees, the
private sector, and government or international agency grants
and loans.
Economic
(costs and job
creation)
What will it cost to
implement various
waste management
activities?
Technical
(location and
equipment)
Environmental
(natural resources
and human health)
Where will you build
collection and disposal
facilities and what
equipment will you
need?
Will solid waste
management activities
(e.g., landfilling or
combustion) affect the
environment?
Calculate the initial capital investment requirements and long-
term operating and maintenance costs associated with the
various waste management activities.
Evaluate the public's ability and willingness to pay.
Evaluate activities based on effectiveness in handling waste and
potential for job creation.
Include geological factors, transport distances, and projected
waste generation in siting and design considerations.
Determine what equipment and training will be necessary to
perform the waste management tasks. (See How To Establish
Recycling and Composting Programs, What Are the Components
of Waste Collection and Transport?, and What Are the Options for
Waste Disposal? fact sheets.)
Establish procedures to verify the protection of groundwater
and drinking water.
Monitor compliance with the national standards to ensure
human health risks are minimized.
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Figure 2—Comprehensive Integrated Solid Waste Management Planning Process
/,E\!H3te ..... ne' Wastel.'.
Identify Needs
"extSaW solid'
" "
•\\
Develop the Integrated Solid
Waste Management Plan
How will you finance building of facilities,
obuln equipment *nd hlfc and train workers?
: Compare Options
Which activities are the most cost-effective?
Are they affordable in the long-run?
Education
Public Participation
Outreach
Organize Decision-Making
Framework : ,
Who will make the decisions?
Establish Objectives
What are your short- and long-term goals?
i'
b:
Identify Potential
Components
Which waste management activities
(e.g., waste preveption, recycling,
disposal) will help you achieve your
objectives?
United States Environmental Protection Agency
EPA530-F-02-026a
(5306W)
Solid Waste and Emergency Response
May 2002
www.epa.gov/globalwarming
1-fH,
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How To Establish
Recycling and
Composting Programs
In many countries, recycling occurs informally at landfills, uncontrolled
dumps, and on streets. Scavengers or wastepickers often collect
materials for reuse or sale without any organization, supervision, or
regulation. While scavenging or wastepicking can be very effective at
reducing the amount of plastic, glass, metal, and paper ultimately requiring
disposal, pursuing these activities can be harmful to worker health.
Incorporating scavengers or wastepickers into organized or formal recycling
programs can improve the quality of their working conditions and the local
environment. Composting can also improve local economies and the
environment—by turning organic waste, which is a large portion of many
city waste streams, into a marketable product for urban and agricultural
uses. Together, recycling and composting can provide income, significantly
reduce waste, and decrease greenhouse gas emissions. This fact sheet
describes the benefits of formal recycling and composting activities and
provides steps on how you can incorporate scavenging or wastepicking into
formal recycling and composting programs. At the end of this fact sheet, a
case study from Brazil shows how businesses organized scavengers and
wastepickers into successful recycling cooperatives.
What Are the Benefits of Formal Recycling arid Composting
Programs?
Recycling and composting activities, if organized properly by the local government, can
generate many environmental and economic benefits. For example, it can create jobs and
income, supply valuable raw materials to industry, produce soil-enhancing compost for
agriculture, reduce the need to site or build more landfills and combustors, and prevent
greenhouse gas emissions. An organized approach to recycling and composting can also
have many benefits for your community. Involving scavengers or wastepickers in formal
recycling activities can empower them, increase their income and reputation, and
improve their quality of life, health, and safety.
tt~.::
nta
Printed c n paper that contains at least 50 percent postconsurr er fiber.
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How Do I Start a Formal Recycling
or Composting Program?
Establishing and managing formal recycling and
composting programs requires significant local
government time and resource investments.
However, these investments can save money in the
long term by allowing governments to maximize
existing recycling and composting activities before
making significant investments in collecting and
transporting waste. To successfully implement
formal recycling or composting programs,
governments will need to consider social, financial,
institutional, and regulatory issues. The following
steps outline one possible approach for
implementing a program.
Step 1. Plan and set goals. Set flexible goals
and plans for your recycling and composting
programs. As you follow each of die steps and learn
more about the community's needs, adjust the plans
to incorporate this information.
Step 2. Study the complete waste
management system.
• Evaluate the waste stream. What types and
amounts of waste are generated and by whom?
• Identify existing activities. Local governments
should determine all waste recycling practices,
including existing informal practices such as
scavenging or wastepicking, in addition to
existing recycling groups such as cooperatives
and micro-enterprises, which are usually formed
under the supervision of nongovernmental
organizations (NGOs). This information will help
community planners consider the recycling
sectors requirements when they design an
improved solid waste management system.
Academic institutions and NGOs might be able
to help perform surveys or odier studies to
gather these critical data.
• Determine possible markets or buyers. Who
will purchase the materials?
Step 3. Work with the community.
• Identify and meet with informal recycling
groups, NGOs, and homeowners in cities.
The local government should select a coordinator
to manage and work with wastepicking groups.
The coordinator should first identify the various
groups or individuals active in recycling or
composting, and then meet witii leaders widiin
those groups to discuss local issues. If more than
one recycling or composting group serves die
community, the decision-makers should
coordinate these groups' activities by assigning
specific service locations to each group and
setting guidelines for die types of waste they can
recycle (e.g., paper, metals, glass, food).
Involving the local government in these activities
could help provide stability for the scavengers' or
wastepickers' work and improve their quality of
life.
• Incorporate scavengers and wastepickers.
The local government should discuss and
determine how existing scavenging or
wastepicking activities and groups, such as
cooperatives and micro-enterprises, could be
incorporated into a formal waste management
system. Emphasis should be placed on the
improved economic, health, and safety benefits
scavengers and wastepickers may experience
under a more organized system.
Step 4. Create a designated recycling or
composting area. The local government should
designate areas within a waste disposal facility
where sorting, recycling, and composting can occur.
These areas can be fixed or moveable to meet the
scavengers' or wastepickers' needs (see text box).
Any recycling or composting diat is being done at
the landfill should be located away from the
working surface of the landfill (i.e., where waste is
being compacted and covered) to protect the health
and safety of scavengers or wastepickers. The local
government should determine what additional
equipment might be necessary for a program and
how die equipment will be provided.
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Step 5. Develop operation standards.
The local government should develop standard
operating procedures for the scavengers or
wastepickers. Standard operating procedures
increase efficiency and help improve health and
safety. Determining a time of day for groups to
access a site is an important consideration.
Requirements such as use of safety equipment (e.g.,
gloves or masks) and worker identification (e.g.,
uniforms or badges) can also be included in
standard operating procedures.
Step 6. Determine who is responsible
for selling the recyclables or composted
material. The government should determine
whether it will be involved in the sale of recyclables
and compost, or if the landfill owner, workers, or
cooperatives will interact with the buyers. The
governing agency also should establish an
agreement with the recycling groups that clearly
states how the profits from selling recyclable or
composted materials will be shared. Governments
also need to determine if the compost will be
available for free or packaged for sale to farmers and
other groups.
DEFINITIONS
Composting: The controlled aerobic
biological decomposition of organic material
in the presence of air and water to form
humus.
Humus: A soil-like material resulting from
the partial decomposition of plant and
animal matter.
Landfill: Disposal site for nonhazardous
solid wastes. The waste is spread into layers,
compacted to reduce its volume, and covered
by clay or soil, which is applied at the end of
each operating day.
Recycling: Collecting, reprocessing, and/or
recovering certain waste materials to make
new materials or products.
Establishing Efficient Work Areas
When designating a recycling or composting
area, the government will need to consider the
availability of space and .financial resources.
Fixed recycling sites may include buildings and
mechanized equipment for separating out
recyclables. These help to make recycling
operations safer and cleaner. They do, however,
require a higher capital investment and have
increased operational costs because the
recyclable materials must be transported from
the active area of the landfill to the recycling
site. Mobile stations, comprised of
compartmentalized push carts, allow recycling
groups to move from one disposal site to
another. They are a cheaper option, but might
decrease the efficiency and safety of the
recycling process.
A composting area might simply involve neat
piles of organic wastes that are turned over by
machine or rotated manually and. watered
frequently to help speed up the natural
breakdown of food and plant waste into a
nutrient-rich compost. Watering also reduces
the potential for material to be moved by wind.
Formal composting activities might include the
use of "windrows," organized rows of organic
material that can be rotated manually or with
machines/Some governments may also find it
useful to purchase a machine to shred fallen
trees and landscape trimmings. Regardless of
how complex the composting activities are, it is
important to monitor the organic breakdown
of materials in order to control odors, keep
rodents out, and ensure a useful end product.
The success of these recycling and composting
activities may affect other components of the
integrated solid waste management (ISWM) system.
Keeping track of materials diverted from disposal
will be useful to local governments considering new
recycling programs or construction of transfer
stations, combustors, and landfills to manage solid
waste.
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CASE STUDY
COOPERATIVE RECYCLING IN BRAZIL I
Businesses in Brazil are taking a lead role in organizing recycling collection in the
country's major cities. In 1992, private companies from various sectors established the
Brazilian Business Commitment for Recycling (CEMPRE), a nonprofit organization
dedicated to the promotion of recycling within the scope of integrated waste
management. CEMPRE tries to increase the community's awareness of recycling and other
solid waste issues through publications, technical research, seminars, and databases. The
outreach programs are aimed at those who influence public opinion, such as mayors,
directors of companies, academics, and nongovernmental organizations (NGOs). The
training programs support the development of recycling cooperatives.
Organizing scavenging or wastepicking activities into recycling cooperatives has been one
of CEMPRE's main activities. The official curbside recycling program in the city of Curitiba,
for example, collects 800 tons of recyclables a month at a cost of $180 per ton, while local
catadores (scavengers or wastepickers) collect over 3,000 tons a month at no direct cost to
the city. In organizing informal recycling activities, CEMPRE hopes to better the catadores1
position in Brazilian society, increase the national recycling rate, and create economies of
scale. According to CEMPRE, the catadores1 free| market approach is more economical than
Brazil's government-run curbside collection programs, and cooperatives enable members to
sell to larger dealers at higher prices. The few cooperatives that already exist have
demonstrated great success. In Sao Paulo, for example, members of a cooperative receive
40 percent more money than they would have earned on their own. To inform the
catadores about the benefits and logistics of organizing into recycling cooperatives,
CEMPRE distributes educational material throughout Brazil and holds courses on the
materials. Catadores attended 10 classes, learning about topics from health care for
workers to the basics of running a cooperative.!In addition, the class visited Belo
Horizonte's composting plant and properly designed, constructed, and managed landfill to
learn more about the city's solid waste services. CEMPRE has completed many other projects
to promote recycling in Brazil, including developing a series of recycling handbooks.
CEMPRE also has sponsored a database of solid ;waste documents, worked to standardize
packaging symbols, and conducted studies of local recycling programs. The organization
also developed a decision-makers' guide to solid waste management in Brazil and
distributed it to every mayor in the country. For more information on CEMPRE, visit the
organization's Web site at: .
United States Environmental Protection Agency
EPA530-F-02-026b
(5306W)
Solid Waste and Emergency Response
May 2002
www.epa.gov/globdwarrning
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What Are the Options
For Waste Disposal?
Many cities have no controlled system for waste disposal. Waste is
either burned in pits, dumped in random locations, or disposed
of in uncontrolled dumps without any further management. All
these actions harm public health and the environment. Controlled waste
disposal can help improve and protect the health of local populations and
preserve valuable environmental resources, such as groundwater and
drinking water. You have two options for waste disposal: operate a properly
designed, constructed, and managed landfill or burn the waste in a
controlled facility that converts waste to energy. This fact sheet describes the
dangers of open dumping and burning and explains procedures for proper
landfill disposal and controlled burning. At the end of this fact sheet is an
example of how using one of these options benefitted the Gaza Strip.
What Problems Can Uncontrolled Dumping and Burning
Cause?
Most uncontrolled dumps are many years old, having grown over time from small dumps
to large, unmanaged waste sites. Uncontrolled dumps have significant environmental
impacts. As the waste decomposes, it creates leachate—a mix of toxic and nontoxic
liquids and rainwater—which may get into local water supplies and contaminate the
drinking water. Uncontrolled dumps also release gases that are explosive and flammable.
In some instances, waste is burned at these dumps, which poses a direct safety threat
because of the danger of explosion. The air pollution created by burning harms local
communities. Improper waste disposal also produces greenhouse gases (GHGs), which
contribute to climate change. In contrast, properly designed, constructed, and managed
landfills aim to prevent or minimize health and environmental impacts. They have liners
and leachate collection systems that protect groundwater, and gas collection systems that
contain or safely burn methane from landfills.
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Properly Designed, Constructed, and
Managed Landfills
To protect human health and the environment,
communities should discourage the use of existing
open dumps and establish a managed site for solid
waste disposal. Safe, well-controlled waste placement
distinguishes a landfill from an open dump. If you
want to provide a properly designed, constructed, and
managed landfill in your community, you can either
convert an existing uncontrolled dump or construct a
new landfill.
Converting Existing Open Dumps to
Properly Designed, Constructed, and
Managed Landfills
Existing open dumps can be converted to landfills in
three phases:
Phase 1: Convert open dumps to
controlled dumps. The steps involved in this
phase include: (1) covering exposed wastes with soil,
sand, or day; (2) installing passive gas vents to safely
control methane emissions; (3) establishing rules for
onsite scavenging or wastepicking; and (4) organizing
wastepickers into recycling groups.
Phase 2: Convert controlled dumps to
simple landfills During this phase, basic
engineering techniques are gradually employed to
stabilize the waste and control environmental releases.
The waste is spread and compacted in layers and
leachate is collected. At this point, scavenging or
wastepicking activities should be confined to areas of
the landfill away from compaction areas and heavy
equipment.
Phase 3: Transition from simple landfills
to properly designed, constructed, and
managed landfills. Activities during this phase
include: (1) developing formal engineering designs;
(2) providing daily onsite management by trained
workers; (3) placing waste in small working areas
with daily cover; (4) collecting and burning landfill
gas; and (5) installing liners and piping to collect and
treat leachate.
Establishing a New Properly Designed,
Constructed, and Managed Landfill
The process of developing a properly designed,
constructed, and managed landfill can be divided into
four steps:
Step 1: Selecting the site. Several factors
should be considered when selecting a site for a
landfill:
• Geological factors. Landfills produce leachate
when waste is exposed to rainwater while it is
decomposing. If leachate leaks out of the landfill, it
can contaminate groundwater and drinking water.
To protect local water supplies, the site must have
a geology that naturally prevents or limits the
release of leachate to the environment. For
example, locating the landfill in an area with clay
soils—through which water cannot flow—will
provide this protection.
• Distance to the location of the waste. The
farther a landfill site is from the point where the
waste is generated and collected, the more waste
transport costs. It is generally most cost-effective to
use a site a relatively short distance away.
• Landfill capacity. Determine how many years the
landfill will be able to accept waste. Calculate the
volume (or capacity) of the landfill by using the
following factors: amount of waste generated per
: person per year, population size, anticipated
population and economic growth, and the number
of years the landfill will be in operation.
• Areas to avoid. Landfills should not be located
near airports, schools, drinking water sources, or
flood-prone areas.
Step 2: Gaining public acceptance.
Residents who live near the chosen landfill site may
have concerns about its environmental and health
impacts. You can increase public acceptance by
educating local residents and business owners about
how the landfill will benefit the community (e.g., by
improving public health and safety, creating local
jobs, and stimulating economic development). You
also can describe what steps will be taken to protect
public health and the environment.
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Step 3: Designing the landfill. Design
requirements for a properly designed, constructed,
and managed landfill include the following (see
Figure 1):
• Liners. Liners are used to prevent leachate from
entering groundwater by keeping fluids within the
landfill area. Liners must be made of relatively
impermeable material such as compacted soil or
clay, synthetic materials (e.g., plastic), or a
composite of earthen and synthetic materials. They
are placed in the bottom of a new landfill before
disposing of any waste. Liners are important for
landfills located on sandy or other soils through
which water can easily flow.
• Leachate collection and treatment. In a properly
lined landfill, leachate accumulates within the
landfill. Therefore, the landfill should include
equipment to collect and divert the leachate from
the landfill and treat it. Perforated piping, for
example, can be installed to collect the leachate
and divert it to a nearby treatment facility (similar
to a water treatment facility). Treated leachate can
then be safely released to the environment.
• Gas collection and treatment. Bacteria that are
naturally present in landfills produce methane as
they decompose and break down the waste.
Methane poses a danger because it is explosive and
can start fires. In addition, methane from landfills
and other sources is harmful to the atmosphere
and climate because it is a greenhouse gas.
Therefore, monitoring the amount of and
controlling methane is very important. Typically, a
system is installed to monitor, collect, and burn
the gas. In some instances, power stations can
collect the gas and use it to generate electricity.
Figure 1—Cross-Section of a typical. Properly
Designed, Constructed, and Maintained Landfill
Liner
Monitoring
Well
M Site access. Access to the landfill must be strictly
controlled to prevent injury or illegal dumping.
This can be done by building a fence around the
site.
Step 4: Operating the landfill. A trained
landfill manager should be hired to properly operate
and manage the site. Before any waste is disposed of,
the manager should develop a plan to serve as the
operational guide for the site. It should specify, in
detail, where on the site waste is to be placed, how
the site will be operated, at what points the garbage.
Will be covered by soil, and how environmental
problems (e.g., animals, litter, fires, gas, leachate) will
be addressed. The plan also should provide details of
equipment, materials, and staff needed to operate the
site; list the environmental agency's required
monitoring and reporting activities; and clearly
describe when and how each part of the site will be
covered and maintained once it has reached its
capacity.
Burning Waste in a Controlled Facility
Combustion, or die controlled burning of waste at
high temperatures to produce steam and ash, is
another waste disposal option and an alternative to
landfilling. Waste combustion reduces die volume of
solid waste to be disposed of by approximately 90
percent. This is especially attractive in crowded cities
that do not have enough land available for landfills.
In addition, solid waste can provide a continuously
available source for generating energy through
combustion. When steam-driven turbines convert the
diermal energy from combustion into electrical
energy, die process is called "waste-to-energy" (WTE).
Steam or hot water produced during combustion also
may be sold directly for industrial processes or space
heating, or it may be used to generate chilled water
for air conditioning. Selling the recovered energy or
water in one of diese forms helps offset die high costs
of construction and operation of waste combustion
facilities, but it does not cover them entirely.
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Waste combustion, however, has significant disadvantages. Constructing a WTE facility requires
large amounts of money. The combustion process also creates air pollution, ash, and waste water, all
of which must be properly managed using technical, monitoring, containment, and treatment
systems. If these byproducts are not controlled, harmful pollutants will be released into the
environment. Operators of these facilities must be well-trained and certified to ensure proper
management. You must also find disposal options fpr waste that cannot be burned.
I
STUDY :
CONVERTING OPEN DUMPS INTO PROPERLY DESIGNED, CONSTRUCTED, AND MANAGED
LANDFILLS IN GAZA
The German Agency for Technical Cooperation (GTZ) recently assisted the Solid Waste
Management Council of the Gaza Strip in closing down a number of open dumps and
building a properly designed, constructed, and managed landfill. The first step in
constructing a landfill was to assess soil and groundwater conditions at several potential locations.
Two important site selection criteria were soil withjenough clay content to serve as a natural
barrier to leachate and a site away from major drinking water sources. Once the team found a
site, it hired local contractors to prepare the landfill site and cover the surface with an asphalt
liner. It then built a storage pond and installed drainage
pipes that carry leachate into the pond. Since Gaza! has no
municipal wastewater treatment facilities to treat the
leachate, the team installed pumps and a sprinkler system
that recirculates the leachate back to the landfill, allowing
it to evaporate. The team considered recirculation to be a
reasonable option because it did not expect the region's dry
climate to generate much leachate and anticipated most of
the leachate would be managed through evaporation.
However, the storage pond and pumping system were later
enlarged to handle larger-than-expected leachate levels.
Once the landfill was in operation, they closed the open
dumps, controlled access to the new site and began transfer
of waste into the new landfill. The team expects the landfill
to last for approximately 13 years. As the team closes filled
sections of the landfill, it covers the area with compost
generated from digging up and screening organic material
from older sections of the landfill. The compost serves as a
cost-effective final cover that helps break down the
methane as it leaves the landfill surface. The compost also
supports vegetation that grows on the landfill surface,
which helps reduce the flow of leachate. The project is a
successful example of an upgrade of disposal standards. For
more information on the Gaza landfill project, visit the Swiss
Agency for Development and Cooperation Web site at
.
DEFINITIONS
Combustion: Refers to controlled
burning of waste to reduce waste
volume and perhaps to generate
energy.
Impermeable: The property of a
material or soil that does not allow
the movement or passage of water.
Leachate: A mix of toxic and
nontoxic liquids and rainwater
created in the landfill environment
that may pose a threat to local
ground-water supplies.
Methane: Also called natural gas,
methane is generated when waste
in a landfill decomposes. It makes
up approximately 50 percent of the
gases emitted from landfills.
United States Environmental
Protection Agency
EPA530-F-02-26c
(5306W)
Solid Waste and Emergency Response
May 2002
www. epa. gov/globalwarming
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What Are the Components
of Waste Collection and
Transport?
xisting waste collection and transport systems often cannot handle
the amount of waste generated by large cities with growing
populations. When this occurs, waste is disposed of in uncontrolled
dumps or openly burned. This type of unmonitored and uncontrolled waste
disposal has negative consequences on human health and the environment.
Improvements to waste collection and transport can create jobs, decrease
open dumping and burning, increase appeal for tourism, and significantly
improve public health. This fact sheet provides basic guidelines for planning
waste collection and transport activities in cities. These guidelines support
an ongoing process of improvements to waste practices through integrated
solid waste management (ISWM). A case study at the end of this fact sheet
shows how a community in Egypt benefitted from implementing some of
these guidelines.
f .
What Are Some Guidelines for Planning Waste Collection and
Transport?
Careful planning is critical to utilizing resources efficiently and effectively. The plan
should consider factors such as applicable laws and regulations; whether a local or
regional approach is most appropriate; available resources and costs; the types, amounts,
and locations of waste to be collected and transported; and public acceptance of these
activities. The following guidelines can be selectively considered during the planning
process for waste collection and transport.
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i Review existing laws or regulations on waste
collection, transport, and disposal. When
designing a waste system, you should determine
whether existing national, state, provincial,
regional, or local regulations provide adequate
legal authority to establish a waste collection,
transport, and disposal system. For example, the
regulations may specify vehicle types and sizes
that can be used for collection, road use
limitations (what vehicles may travel on what
roads and during what hours), and waste
transport safety requirements to reduce the
potential harm and exposure to the public. If no
such requirements exist in current regulations,
the national government may want to rewrite the
regulation or address these issues in a national
policy and/or decree.
Designate one agency to oversee waste
collection, transport, and disposal. The local
government should make one agency responsible
for waste collection, transport, and disposal.
Having a single agency for this task will help
eliminate potential overlap and confusion among
various government agencies.
Determine geographic scope of collection
and transport services. Several local
governments may consider combining resources
to create a regional collection and transport
authority. This alternative is usually more cost-
effective and may also reduce the need to site
several disposal facilities. If a regional authority
approach is selected, communities need to agree
on an overall budget and source of funding, then
determine how much funding each community
will contribute to the program. Many
communities also have found they can decrease
the cost and improve the quality of service by
using private waste collection and transport
companies and even cooperatives or micro-
enterprises, rather than providing this service
themselves.
Determine funding, equipment, and labor
needs. After the agency has been selected, you
should determine how much labor, equipment,
and money to dedicate toward managing waste
collection and transport. This decision should be
based on at least a basic knowledge of the types
and amounts of waste, as well as distances
traveled to the waste disposal site. Table 1 lists
the advantages and disadvantages of various
collection and transport methods. Note that city
and rural communities have very different waste
collection and transport needs. In rural areas, for
example, the most economical method may be
manual collection from communal bins. In city
areas with established roads, trucks may be used.
Enclosed trash containers should be used
whenever possible to reduce infestation by
insects and rodents. Other factors to consider
include vehicle maintenance, frequency of
collection, cost of labor, and potential revenues.
Types of Solid Waste Customers M
Potential customers may incjude public ; j
housing, private residences, [factories o|r other: j
industrial facilities, construction and demolitiir)
sites, office buildings and cojmmercial ' : !
establishments, and large pilblic institutions j i
such as universities, hospitals, an
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number of years the landfill will be in
operation. Finally, you should determine what
types of wastes are generated—household
wastes, bulky items, or construction and
demolition wastes. Note that waste
composition may vary with climate, type of
customer served, and the region's economy
(e.g., more plant or vegetation waste may be
generated during the growing season). This
factor is especially important in tourist or
resort areas, where the number of people and
the amounts of waste tend to change
frequently.
Consider a transfer station. Facilities where
waste is transferred from manual or small
collection vehicles to larger vehicles before
being transported to disposal sites or landfills
are called transfer stations. Transfer stations are
necessary when disposal sites are located far
from the collection areas, or when several
communities contribute to the same landfill or
waste facility. Transfer stations can also serve as
a central location for activities to sort and
recover waste. ;
Involve the public. To address the needs of
the community, obtain and consider public
input throughout the planning and decision-
making process. Obtaining public input also
offers opportunities to educate the community
about proper waste collection, storage, and
disposal. This will help ensure an effective
solid waste management system-
Table 1—Waste Collection and Transport Methods
Trucks
Carry large loads.
Appropriate for hauling over long
distances typical in rural areas.
Require few workers.
Have moderate maintenance costs.
Require established roadways.
Trains
Barges
Carry large loads.
Appropriate for transporting waste
long distances.
Carry large loads.
Appropriate for transport between
coastal communities or on large
rivers.
Expensive to operate and maintain.
Railroad proximity to customers a
must.
Expensive to operate and maintain.
Not appropriate for land transport.
Must be used in combination with
T>thertrans~p6Tl methods.
Transfer stations
Serve as an intermediate collection
point for small-scale waste haulers
(e.g., carts).
Appropriate for urban areas where
disposal is located far away.
Can further support the secondary
materials markets (i.e., recycling).
Require a dedicated site,
maintenance, and site management.
May have public opposition due to
odors, increased traffic, and illegal
dumping and/or open burning.
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CASE STUDY !
IMPROVED WASTE COLLECTION IN BARDEES, EGYPT
As part of a regional environmental action plan developed by Support for Environmental
Assessment and Management (SEAM), a task force consisting of the Egyptian
Environmental Affairs Agency and a British consulting firm, communities throughout
parts of Egypt were surveyed on environmental issues. In Bardees, a city of 40,000, residents
identified waste management as its most important environmental problem.
SEAM worked with local organizations in Bardees to
get more detailed opinions from both residents and
waste collection workers. Many residents were
concerned about inadequate coverage of collection
services and the general dirty appearance of city;
streets. The city's equipment was in poor condition
and held a limited amount of waste, which often
spilled onto the streets. Collection was inconsistent
and incomplete, with 90 percent of residents in !
smaller streets often not receiving any service.
Through community focus groups, SEAM found that
approximately 68 percent of residents were willing to
pay for improved services. Waste collection workers
were consulted to identify disposal patterns and
collection needs. SEAM and the local government
council also researched the community's existing
waste stream and waste management practices. They
determined common waste disposal practices and
preferred ways to collect waste. The city was
collecting trash using tractors attached to trailers that
could hold only 2.5 cubic meters (m3) of waste, arid
some residents were paying donkey-cart operators
to collect their waste.
To improve collection services, SEAM developed a trailer that could accommodate up to 7 m3 of
waste. SEAM helped the city modify its old trailers and saved them for use in outlying areas
and emergencies. The city purchased hand carts for collection from narrow streets, set
schedules for morning collection, and gave uniforms to the staff of 17 sweepers. To educate
residents and gain their participation, SEAM and the local government council worked with
three local religious organizations to coordinate community awareness activities. One
organization, for example, reached out to women through its literacy classes, sewing center,
and daycare center. Another organization distributed leaflets to shops urging them to put their
waste in garbage bins.
With its residents involved and understanding their role in keeping the community clean,
Bardees has successfully improved its collection services and cleaned up its streets. While the
city is currently paying all the operating costs for waste collection, it is working with an NGO to
start collecting user fees from residents and businesses. For more information on SEAM's waste
management activities, visit .
United States Environmental Protection Agency
EPA530-F-02-026d
(5306W)
Solid Waste and Emergency Response
May 2002
www.epa.gov/globalwarming
DEFINITIONS
Nonbiodegradable: Not capable of
decomposing under natural conditions.
Regulation: A rule or ordinance by
which conduct is regulated or that
establishes certain standards or
requirements for activities or operations.
Source Separated: Separating various
wastes at the point of generation (e.g.,
separation of paper, metal, and glass
from other wastes) to make recycling
simpler and more efficient.
Transfer Station: Facility where solid
waste is moved from collection vehicles
to other vehicles for transport to
materials recovery or disposal sites.
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