construction and demolition waste management guideline for...
TRANSCRIPT
Construction and Demolition Waste Management Guideline for Municipalities
March 2018
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Table of Contents
Abbreviations ............................................................................................................................................... ii
Definitions ..................................................................................................................................................... iii
1 Introduction ......................................................................................................................................... 1
1.1 Background ................................................................................................................................ 1
1.2 Defining construction and demolition waste ....................................................................... 2
1.3 Purpose of the guideline .......................................................................................................... 3
1.4 Role of municipalities in C&DW management .................................................................... 4
1.5 Approach used to compile the guideline ............................................................................ 4
1.6 Structure of the guideline ........................................................................................................ 5
2 Policy and legislative overview ....................................................................................................... 6
2.1 Strategic Alignment .................................................................................................................. 6
2.2 Legislative overview ................................................................................................................ 12
3 Construction and Demolition Waste Diversion .......................................................................... 18
3.1 The benefits of diverting C&DW ........................................................................................... 18
3.2 Barriers to recycling C&DW ................................................................................................... 20
4 Proposed mechanisms for facilitating C&DW recovery and increasing diversion ............. 23
4.1 Including C&DW management provisions in municipal by-laws ................................... 23
4.2 Requesting Integrated Waste Management Plans as part of the building approval
process ....................................................................................................................................... 24
4.3 Establishing public-private partnerships .............................................................................. 27
4.4 Awareness-raising .................................................................................................................... 31
4.5 Green Procurement ................................................................................................................ 34
4.6 Regionalisation of waste management services .............................................................. 37
4.7 Providing infrastructure to support the collection and recycling of C&DW ................ 39
4.7.1 Collection of C&DW ....................................................................................................... 39
4.7.2 Recovery of C&DW ......................................................................................................... 42
4.7.3 Processing ......................................................................................................................... 45
4.7.4 Potential end-use applications .................................................................................... 46
5 Conclusion......................................................................................................................................... 50
6 Sign off................................................................................................................................................ 51
7 References ........................................................................................................................................ 52
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Abbreviations
C&DW Construction and Demolition Waste
EIA Environmental Impact Assessment
IPWIS Integrated Pollutant and Waste Information System
IWMP Integrated Waste Management Plan
MTSF Medium-Term Strategic Framework
MRF Material Recovery Facility
NEMA National Environmental Management Act (Act No. 107 of
1998),
NEM:WA National Environmental Management: Waste Act (Act No. 59
of 2008)
WDF Waste Disposal Facility
WMF Waste Management Facility
WML Waste Management Licence
WMO Waste Management Officer
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Definitions
Disposal: Means the burial, deposit, discharge, abandoning, dumping, placing or release of
any waste into, or onto, any land (National Environmental Management Act, (Act No. 59 of
2008) (NEM:WA, 2008).
Diversion rate: The percentage of waste material diverted from waste disposal facilities. It
may be measured in % volume or weight (DEA&DP, 2015).
Drop-off facility: Facilities that provide residents with the convenient opportunity to drop off
recyclable materials, including construction and demolition waste, compostable materials
and waste, which has not been put out for collection.
General waste: Means waste that does not pose an immediate hazard or threat to health or
to the environment, and includes:
(a) domestic waste;
(b) building and demolition waste;
(c) business waste;
(d) inert waste; or
(e) any waste classified as non-hazardous waste in terms of the regulations made under
section 69 (of the National Environmental Management: Waste Act (Act No. 59 of 2008)
(NEM: WA)), and includes non-hazardous substances, materials or objects within the business,
domestic, inert, building and demolition wastes as outlined in schedule 3 (of the NEM:WA)
(NEM:WA, 2008).
Hazardous waste: Means any waste that contains organic or inorganic elements or
compounds that may, owing to the inherent physical, chemical or toxicological
characteristics of that waste, have a detrimental impact on health and the environment and
includes hazardous substances, materials or objects within business waste, residue deposits
and residue stockpiles as outlined in schedule 3 of the NEM:WA (NEM:WA, 2008).
Industrial symbiosis: The exchange of materials, energy, water and by-products as a
resource between interested industries typically based in close proximity to each other
(DEA&DP, 2015).
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Integrated waste management: Employing several waste control and disposal methods, i.e.
reducing, re-using, recycling, treatment, and landfilling, to minimise the environmental
impact of commercial and industrial waste streams (DEA&DP, 2017a).
Materials recovery facility: is a specialised plant that receives, separates and prepares
recyclable materials for the market e.g. end-user manufacturers and/or recycling
companies. It is a waste management facility where waste received is separated into a
number of waste streams such as cardboard, metal, paper, plastics, etc., by using either an
automated system or, as in most cases, a manual system where workers hand pick the
different recyclables and place them in dedicated containers for subsequent compaction
and baling (DEA&DP, 2015).
Recycle: Means a process where waste is reclaimed for further use, which process involves
the separation of waste from a waste stream for further use and the processing of that
separated material as a product or raw material (NEM:WA, 2008).
Re-use: Means to utilise the whole, a portion of a specific part of any substance, material or
object from the waste stream (again) for a similar or different purpose without changing the
form or properties of such substance, material or object (NEM:WA, 2008).
Waste: Means (a) Any substance, material or object, that is unwanted, rejected,
abandoned, discarded or disposed of, or that is intended or required to be
discarded or disposed of, by the holder of that substance, material or object,
whether or not such substance, material or object can be re-used, recycled or
recovered and includes all wastes as defined in Schedule 3 of this Act; or
(b) any other substance, material or object that is not included in Schedule 3 that
may be defined as a waste by the Minister by notice in the Gazette,
but any waste or portion of waste, referred to in paragraphs (a) and (b), ceases to
be a waste-
(i) once an application for its re-use, recycling or recovery has been approved or,
after such approval, once it is, or has been re-used, recycled or recovered;
(ii) where approval is not required, once a waste is, or has been re-used, recycled or
recovered;
(iii) where the Minister has, in terms of section 74, exempted any waste or a portion
of waste generated by a particular process from the definition of waste; or
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(iv) where the Minister has, in the prescribed manner, excluded any waste stream or
a portion of a waste stream from the definition of waste (NEM:WA, 2008).
Waste disposal facility: Means any site or premises used for the accumulation of waste with
the purpose of disposing of that waste at that site or on that premises (NEM:WA, 2008).
Waste management facility: Means a place, infrastructure, structure or containment of any
kind including any structures or infrastructure, wherein, upon, or at, a waste management
activity takes place and includes a waste transfer facility, a waste storage facility, container
yard, waste disposal facility, incinerators, lagoons, recycling, co-processing, or composting
facilities (NEM:WA, Regulation, 2013).
Waste management hierarchy: A model that aims to prevent, reduce and manage waste
through encouraging waste avoidance first and then the reduction, reuse, recycling and
disposal of waste and is presented in the form of a pyramid. If the hierarchy is implemented it
will assist in the reduction of greenhouse gas emissions, reduce potential pollutants, save
energy, conserve resources, create jobs and stimulate the development of green
technologies (DEA&DP, 2015).
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1 Introduction
Many waste disposal facilities (WDFs) in the Western Cape are at or nearing capacity, and
receive large volumes of construction and demolition waste (C&DW). Despite C&DW
increasingly being recognised as a resource, it is still largely being disposed of, which is
contrary to the principles of the waste management hierarchy. The waste management
hierarchy prioritises waste diversion measures such as waste avoidance, re-use, recovery and
recycling over disposal. Due to its generally inert nature, clean C&DW can be used for a
number of useful purposes. Efforts by some municipalities in the province to divert C&DW
include using it for e.g. landfill cover, slope stabilisation and for the construction of roads at
WDFs. Additional interventions are however needed to ensure C&DW is appropriately
managed at construction sites so as to improve the quality of C&DW material and increase
its recycling/re-use potential. Measures must also be implemented to address widespread
illegal dumping of waste, of which a large portion includes C&DW. This guideline highlights
the key issues which municipalities need to consider in managing C&DW and aims to explore
the role that municipalities can play in C&DW diversion.
1.1 Background
The Medium-Term Strategic Framework (MTSF) 2014-2019 provides a national overall waste
diversion target for recyclables diverted from WDFs of 20% (based on mass) by 2019. The
Department recognises that in order to attain this waste diversion target, proper
management and diversion of C&DW is key because of sizable contribution in weight and
volume this waste stream makes to WDFs. The need for a Construction and Demolition Waste
Management Guideline was highlighted in the Western Cape Integrated Waste
Management Plan (IWMP) 2017-2022 as a priority to assist municipalities with the
management, diversion and beneficial use of this waste stream. The Western Cape IWMP
20017-2022 indicates that diversion targets for C&DW will be set within the next few years. The
management of C&DW should thus shift from mostly disposal towards a more integrated
approach which aims to increase diversion.
The current management of C&DW is considered problematic for the following reasons:
C&DW is largely landfilled, which contributes negatively to WDF airspace availability
and thereby reduces the lifespan of WDFs;
Low levels of diversion equate to lost opportunities in terms of job creation and
economic growth associated with recycling;
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High levels of illegal dumping, which is in-part attributed to lack of infrastructure, has
negative financial, environmental and aesthetic impacts;
Poor separation at source results in contamination of C&DW, thereby decreasing the
quality of and potential value of recycled materials;
Outdated municipal control measures e.g. integrated waste by-laws that are not
aligned with national waste legislation; and
Poor consultation, coordination and planning within municipal structures.
1.2 Defining construction and demolition waste
Note: Construction waste may contain hazardous components such as insulation materials
and asbestos-containing material. This guideline however will only focus on the diversion and
management of non-hazardous component of this waste type.
C&DW, also often referred to as “building rubble”, “builders’ rubble” or “building and
demolition waste”, is waste generated during construction, renovation and demolition of
structures such as buildings, roads and bridges.
Building and demolition waste is defined in the NEM:WA as:
Building and demolition waste
“means waste, excluding
hazardous waste, produced
during the construction,
alteration, repair or demolition
of any structure, and includes
rubble, earth, rock and wood
displaced during that
construction, alteration, repair
or demolition, which include:
(a) discarded concrete, bricks,
tiles and ceramics, (b)
discarded wood, glass and
plastic, (c) discarded metals,
(d) discarded soil, stones and
dredging spoil, (e) other
discarded building and
demolition wastes”
Source: DEA&DP, 2015
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During construction, construction wastes arise during site preparation where excess or
unsuitable materials are removed during the levelling of the site. Construction waste is also
generated during and after construction site clean-up. Demolition of buildings provides a
large potential source of waste material for re-use and recycling (George Municipality, 2010).
Another source of C&DW is when property is damaged during natural disasters such as fires
and floods.
The composition of C&DW is highly variable and may comprise inter alia metals, asphalt,
brick, concrete, corrugated cardboard, drywall, glass, wood, insulation, masonry, plastics,
rocks, roofing materials and excavated materials. Figure 1 provides a summary of C&DW
types and components.
Figure 1: Summary of C&DW types and components (Source: Arslan et al. 2012)
1.3 Purpose of the guideline
The aim of this Construction and Demolition Waste Management Guideline is to assist
municipalities with the management of C&DW, including the facilitation of C&DW re-use,
recycling and recovery. The objectives of this guideline include:
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To provide guidance to municipalities with respect to facilitating the re-use, recovery
and recycling of C&DW with the aim of diverting this waste type from WDFs;
To give effect to Goal 3, Objective 1 of the provincial IWMP, which aims to “Minimise
the consumption of natural resources”; and
To assist municipalities in reaching the overall national waste diversion target as
stipulated in the MTSF.
1.4 Role of municipalities in C&DW management
The role of municipalities in waste management is clearly defined in the Constitution and
includes waste collection, storage and disposal. Municipalities are expected to promote
integrated waste management by working with other stakeholders to extend recycling at a
municipal level. Municipalities are required to facilitate local solutions such as material
recovery facilities and drop-off facilities, as opposed to providing all of the required recycling
infrastructure (DEA, 2011). It is thus important that municipalities form partnerships with the
private sector who are able to provide technical expertise, human and financial resources,
as well as infrastructure. In the case of C&DW, for example, municipalities may provide land
and material to the private sector for brick-making or crushing. Municipalities may also use
other mechanisms to promote the re-use and recycling of C&DW e.g. integrated waste
management by-laws and awareness-raising. These measures are further explored in
Chapter 4.
1.5 Approach used to compile the guideline
During 2014 and 2015, the Department hosted a number of workshops to determine the
current practices, opportunities and challenges regarding C&DW management. These
engagements were attended by municipal officials, industry and waste management
companies. Comments and inputs made during those workshops inform this guideline. To
ensure participation by municipalities in the development of the guideline, the draft layout
was circulated for comment. Questionnaires were also distributed to municipalities. The
questionnaires focused on quantities and composition of C&DW, waste diversion measures
and challenges experienced. The draft guideline was also distributed to municipalities to
obtain further inputs; however, no comments were received.
A literature review was also undertaken during the compilation of this guideline, which
focussed on both local and international experiences pertaining to C&DW management.
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1.6 Structure of the guideline
Chapter 1 defines C&DW and highlights the issues surrounding the current management
thereof.
Chapter 2 provides the strategic and legislative context for C&DW management. It provides
linkages to national and provincial policy and highlights key concepts relevant to the
recycling of C&DW.
Chapter 3 highlights the benefits of and hurdles to C&DW diversion.
Chapter 4 discusses the proposed mechanisms that municipalities can employ to increase
C&DW diversion.
Chapter 5 concludes this guideline.
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2 Policy and legislative overview
2.1 Strategic Alignment
Several policies have relevance to integrated waste management and the promotion of the
green economy: This guideline aligns with the following key national and provincial policies
as indicated in Table 1:
Table 1: Policies relevant to waste management
Relevant policy Relevance to waste diversion/ C&DW
diversion and recycling
National Development Plan 2030 (2012)
Maps out the vision of the country with its
key objective to reduce poverty and
inequality in South Africa by 2030.
Investment in consumer awareness,
green product design, recycling
infrastructure and waste-to-energy
projects, which would result in
significant strides to becoming a
zero-waste society.
Emergence of small-, medium- and
micro- enterprises in waste
management will contribute to
reducing unemployment, poverty
and income inequality.
Aims to implement a waste
management system through the
rapid expansion of recycling
infrastructure, and encouraging the
composting of organic domestic
waste to bolster economic activity in
poor urban communities.
Medium- Term Strategic Framework (2014-
2019)
National implementation framework for the
Outcome 10 of the framework aims
to ‘protect and enhance our
environmental assets and natural
resources. It promotes the improved
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NDP.
management of waste and
investment in recycling infrastructure
and services. It identifies the
implementation of the 3Rs (reduce,
re-use and recycle) of the Waste
Management Hierarchy which
requires producer responsibility and
the rapid expansion of recycling
infrastructure.
Outcome 10, sub-outcome 5 Target:
20% of recyclables diverted from
landfill for re-use, recycle and
recovery.
OneCape 2040 (2013)
Strategy to stimulate the transition of the
Western Cape’s economy to become more
inclusive and resilient.
Envisages a highly-skilled,
innovation-driven, resource-efficient,
connected, high opportunity and
collaborative society.
Green Economy Strategy Framework (2013)
Framework for the Western Cape to
become the lowest carbon province and
leading green economic hub of the African
continent.
(WCG, 2013)
Aims to grow the commercial waste
economy in partnership between
public and private sectors as a
major source of green jobs.
Climate Change Response Strategy (2014)
This strategy is a coordinated climate
change response for the Western Cape
Province.
(DEA&DP, 2014)
Aims to promote the waste
economy and to identify
opportunities to reduce waste going
to landfill.
WC IWMP 2017-2022
Plan which provides strategic direction
regarding integrated waste management
Envisages a resource-efficient
society that ensures a clean
environment.
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over the short-, medium- and long- term to
the Western Cape provincial government,
local government, industry, commerce and
civil society.
(DEA&DP, 2017b)
Goal 3, objective 3: Increase waste
diversion through reuse, recovery
and recycling.
Key concepts:
Green Economy
The United Nations Environment Programme defines the green economy as a “system of
economic activities related to the production, distribution and consumption of goods and
services that result in improved human well-being over the long-term, while not exposing
future generations to significant environmental risks or ecological scarcities”. This suggests the
decoupling of resource use and environmental impacts from economic growth and is
characterised by substantially increased investment in green sectors, supported by enabling
policy reforms (Department of Environmental Affairs (DEA), 2017). The Green Economy refers
to two inter-linked developmental outcomes for the South African economy:
growing economic activity (which leads to investment, jobs and competitiveness) in
the green industry sector; and
a shift in the economy as a whole towards cleaner industries and sectors (DEA, 2017)
Furthermore, the NDP (2012) envisions a shift towards a Green Economy and emphasises that
the country needs to transition to a low-carbon economy and society that fosters innovation
in green product and service development. The Green Economy is based on six main
sectors, of which waste management is one (Figure 2). Recycling of C&DW thus supports the
green economy.
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With respect to waste management, policy aims to promote and grow the waste economy
in partnership between public and private sectors as a major source of green jobs. The
current South African waste economy is estimated at R15 billion, providing close to 30 000
employment opportunities (GreenCape, 2017).
Circular Economy
The current model of resource consumption is linear i.e. materials are harvested, used to
manufacture products for consumers, who then dispose of it when it no longer serves its
purpose (Ellen MacArthur Foundation, 2015). Figure 3 provides a graphical description of the
process flow associated with the current linear model.
Figure 3: Linear economy model
Green
economy
Land
management
Renewable
energy
Water
management
Clean
transportation
Waste
management
Green buildings
e.g. C&DW
recycling
Figure 2: Sectors of the Green Economy
10
Goal 3 of the WC IWMP envisions a shift towards a circular economy, which aims to reduce
waste and protect the environment. The circular economy is defined as an economy “…
that is restorative and regenerative by design, and which aims to keep products,
components and materials at their highest utility and value at all times, distinguishing
between technical and biological cycles” (Ellen MacArthur Foundation, 2015). The transition
to a circular economy requires emphasis to be placed on reusing, repairing, refurbishing and
recycling existing materials and products rather than disposing thereof i.e. waste as a
resource (European Commission, 2014). An example of the circular economy as it applies to
cement aggregate concrete is shown in Figure 4. The Western Cape Industrial Symbiosis
Programme and the City of Cape Town’s Integrated Waste Exchange Programme are local
examples of platforms for waste exchange, whereby waste from one person/company
becomes a resource for another.
Figure 4: Circular Economy applied to cement aggregate concrete (Source: Lafarge, 2015)
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Waste Management Hierarchy
It is estimated that (as at 2011) 90% of the solid waste generated in South Africa is landfilled
(DST, 2014). The waste management hierarchy considers disposal of waste as the least
favourable waste management option (Figure 5). The waste management hierarchy consists
of options for waste management during the lifecycle of waste, arranged in descending
order of priority: waste avoidance and reduction, re-use, recycling, recovery, and treatment,
and disposal as the last resort. The waste hierarchy is adopted as the national approach to
waste management and its principles are emphasized in the National Environmental
Management: Waste Act, (Act no. 59 of 2008), as amended (NEM:WA) and the National
Waste Management Strategy, 2011. It also contributes to the principles of the green
economy by re-introducing resources back into the economy, which would ordinarily be
landfilled; by creating jobs in the recycling sector and by reducing social and environmental
costs (externalities) of landfilling (DST, 2014).
Figure 5: Waste management hierarchy
Least favoured
Most favoured
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2.2 Legislative overview
There is a lack of national and provincial legislation specifically targeting the management
of C&DW. However, the following environmental and waste legislation have relevance to
C&DW management.
The Constitution of South Africa,
1996
National Waste Management
Strategy, 2011
Regulations
List of Waste Management
Activities, 2013
National Waste Information
Regulations, 2012
Waste Classification and
Management Regulations,
2013
Norms and Standards
Norms and Standards for the
Assessment of Waste for
Landfill Disposal, 2013
Norms and Standards for
Disposal of Waste to Landfill,
2013
Norms and Standards for the
Storage of Waste, 2013
Norms and Standards for the
Sorting, Shredding, Grinding,
Crushing, Screening or Baling
of General Waste, 2017
National Environmental Management Act (Act
No. 107 of 1998)
En
viro
nm
en
tal
righ
t
Sp
ec
ific
En
viro
nm
en
tal
Ac
t
National Environmental Management: Waste
Act (Act No. 59 of 2008)
Figure 6: Waste managment legislation
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National Environmental Management Act (Act No. 107 of 1998)
The National Environmental Management Act (NEMA) provides the legislative framework for
environmental management and contains environmental management principles that
ensure that the environment is protected from degradation. It places sustainable
development at the heart of every development process that has the potential to have an
impact on society, the economy and the environment. It requires the integration of social,
economic and environmental factors in the planning, implementation and evaluation of
decisions so as to ensure that development serves present and future generations. Section 28
of the NEMA places a “duty of care” on anyone who has caused, causes or may cause
significant pollution and degradation to prevent, minimise and rectify such pollution and
degradation.
The Environmental Impact Assessment (EIA) Regulations, 2017 promulgated in terms of the
NEMA provides the procedure for basic assessment and scoping/EIA to be followed during
the Environmental Authorisation and Waste Management License (WML) processes.
National Environmental Management Waste Act (Act No. 59 of 2008)
The NEM:WA provides the basis for the regulation of waste management in South Africa. It
adopts the waste management hierarchy as a national approach to waste management to
ensure the protection of human health and the environment. The NEM: WA also extends the
mandate of municipalities to incorporate waste minimisation within existing waste
management functions. Furthermore, it requires that provincial government and
municipalities prepare IWMPs and designate waste management officers (WMOs) to
coordinate matters pertaining to waste management. It provides definitions for C&DW under
“building and demolition waste” and “construction wastes” and characterises these as
general waste and hazardous waste, respectively due to their composition.
The National Waste Management Strategy, 2011
The National Waste Management Strategy (NWMS) is a legislative requirement of the
NEM:WA. The purpose of the NWMS is to achieve the objects of the NEM:WA. It is structured
around eight waste management goals which were to be met by 2016. These goals are
relevant to appropriate C&DW management and aim to grow the contribution of waste to
the green economy through the promotion of reuse, recycling and recovery. The goals thus
aim to promote proper planning, set realistic targets, and achieve an integrated approach
to waste management, coupled with sound service delivery and effective compliance and
enforcement. Effective compliance is especially relevant to C&DW as a result of widespread
illegal dumping thereof.
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List of Waste Management Activities, 2013
These regulations provide a list of waste management activities that have, or are likely to
have, a detrimental effect on the environment and require a WML prior to operation. These
activities are set out in three categories, namely Category A, B and C. For Category A
activities, a basic assessment process is required, whereas a scoping/EIA process is required
for Category B activities. A person wishing to commence with a waste activity under
Category C does not require a WML, but must comply with the relevant norms and
standards. The Department developed a Waste Managing Licensing Guideline in 2017 to
assist with the understanding of the WML process; the guideline can be accessed on the
departmental website:
https://www.westerncape.gov.za/eadp/sites/eadp.westerncape.gov.za/files/your-resource-
library/WML%20Guideline%202017_web.pdf.
National Norms and Standards for the Storage of Waste, 2013
The norms and standards for the storage of waste require that waste facilities with the
capacity to store in excess of 100m3 of general waste or 80m3 of hazardous waste, register
with the competent authority1. These norms and standards aim to provide a national
approach to the management of waste storage facilities, ensure best management
practice and provide minimum standards for the design and operation of facilities. The norms
and standards replace the need for the aforementioned facilities to obtain a WML.
National Norms and Standards for the Sorting, Shredding, Grinding, Crushing, Screening or
Baling of General Waste, 2017
These norms and standards require all facilities that sort, shred, grind, crush, screen or bale
general waste to register with the competent authority. Facilities with an operational area
less than 1000m2 must adhere to general duty of care principles. Facilities with an operational
area exceeding 1000m2 must also comply with all the requirements of the norms and
standards. The norms and standards replace the need for the aforementioned facilities to
obtain a WML.
Waste Information Regulations, 2012
The Department developed the Integrated Pollutant and Waste Information System (IPWIS),
which gives effect to sections 60, 61 and 62 of the NEM:WA, and requires all holders of waste,
including industries, to report on their waste management practices. The Act defines a
‘holder of waste’ to mean any one person who imports, generates, stores, accumulates,
1 In the case of the Western Cape, the Department of Environmental Affairs and Development Planning
(Waste Management Licensing Component) is the competent authority
15
transports, processes, treats, or exports waste or disposes of waste, and ‘industry’ includes
commercial activities, commercial agricultural activities, mining activities and the operation
of power stations.
Waste planning requires accurate information on waste quantities disposed of and diverted
from WDFs. Comprehensive information on waste flows from each waste management
facility (WMF) in the province is reported to the National South African Waste Information
System (SAWIS), via IPWIS, which will contribute to a better understanding of the national
waste balance. The National Waste Information Regulations regulate the reporting of waste
information for the protection of the environment and the management of waste.
All municipalities are required to report their waste quantities to IPWIS, including C&DW,
generated and diverted. C&DW must be reported under category GW 30 as indicated in
Annexure 3 of the Waste Information Regulations.
Waste Classification and Management Regulations, 2013
These regulations specify that all waste generators must ensure that the waste they generate
is classified in accordance with SANS 10234:2008 (Globally Harmonized System of
Classification and Labelling of Chemicals) within 180 days of generation. Waste that was
previously classified in terms of the Minimum Requirements for the Handling, Classification
and Disposal of Hazardous Waste (1998) must now be classified in terms of SANS 10234:2008.
Waste types listed in Annexure 1 of the regulations do not require classification in terms of
SANS 10234:2008. According to Annexure 1, uncontaminated building and demolition waste
is pre-classified and is thus not required to be classified.
Table 2: Wastes that do not require classification or assessment
General waste Hazardous waste
Domestic waste Asbestos waste
Business waste not containing hazardous
waste or hazardous chemicals
Polychlorinated Biphenyls (PCB) waste or
PCB containing waste
Non-infectious animal carcasses Expired, spoilt or unusable hazardous
products
Garden waste General waste, excluding domestic waste,
which contains hazardous waste or
hazardous chemicals
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Waste packaging Mixed, hazardous chemical wastes from
analytical laboratories or laboratories from
academic institutions in containers less than
100 litres
Waste tyres Health care risk waste
Building and demolition waste not
containing hazardous waste or hazardous
chemicals
Excavated earth material not containing
hazardous waste or hazardous chemicals
Norms and Standards for Disposal of Waste to Landfill, 2013
The National Norms and Standards for Disposal of waste to Landfill prescribe the requirements
for the disposal of waste to landfill as required by the Waste Classification and Management
Regulations, 2013. In particular, these norms and standards provide the minimum engineering
design requirements for WDF containment barriers for Class A (hazardous waste) to Class D
(inert waste) WDFs, which are relevant for new WDFs and new working cells at existing WDFs.
These norms and standards also provide the waste acceptance criteria for disposal to WDFs;
describe the WDF disposal requirements for Type 0 to Type 4 waste, and set out waste
disposal restrictions and timeframe within which compliance must be achieved. According
to these norms and standards, building and demolition waste not containing hazardous
waste or hazardous chemicals is considered a Type 4 waste and may be disposed of at a
Class D WDF (Table 3).
17
Table 3: Waste disposal facility classes
WDF Class Previous landfill
categories
Waste type Example
Class A H:H or H:h Type 1 Asbestos
Class B GLB+ Type 2 Garden waste
Class C GMB+ Type 3 Post-consumer
packaging
Class D GSB- Type 4 Building and
demolition waste
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3 Construction and Demolition Waste Diversion
3.1 The benefits of diverting C&DW
Diverting C&DW has many benefits. Some of these are discussed below:
Reducing the demand for landfill airspace
C&DW currently makes a sizeable contribution to WDFs. Diverting C&DW would thus
contribute to landfill airspace savings. This is especially relevant in the Western Cape, where
the shortage of airspace and securing suitable available land to establish new WDFs is a
challenge. The high costs associated with the development of WDFs (as a consequence of
the requirements of the National Norms and Standards for Disposal of Waste to Landfill, 2013)
is an additional barrier to establishing new WDFs. Municipalities are largely diverting C&DW
by using it at WDFs for landfill cover. Other uses include slope stabilisation and road
construction at WDFs. Crushed C&DW could, depending on the quality, also be used as sub-
base for paving (including road construction).
Conserving natural resources
The construction industry is resource intensive and considered one of the least
environmentally sustainable industries in the world (Willmott Dixon, 2010). A variety of raw
materials including e.g. limestone, building sand, gypsum, clay and timber are required to
produce construction materials. Whilst some of these resources are abundant in the province
e.g. stone aggregate, brick clay and limestone, others, such as building sand are limited e.g.
in the Greater Cape Town area (Council for Geoscience, 2014). Furthermore, transportation
of these resources is becoming increasingly expensive as they are found further away from
construction activities. The extraction of raw materials for the construction industry impacts
the environment negatively and may result in loss of habitat, damage to the landscape,
potential subsidence and methane release (Willmott Dixon, 2010). Re-using and recycling
construction materials will thus reduce the demand for virgin materials.
19
Reducing illegal dumping
Illegal dumping in the province is a widespread problem. A large portion of illegally dumped
waste is C&DW. Although some municipalities indicated that only a low percentage of
illegally dumped waste is C&DW, three of the municipalities that responded to the survey
estimated this percentage to be 50% or higher. Estimated retrieval rates of C&DW for re-
use/recycling varied greatly amongst municipalities; five of the municipalities who responded
indicated retrieval rates of 20% and above. Clean-up costs imposed on municipalities
ranged between R50 000 to R3 million per annum on average. This value is far higher in the
case of the CCT. According to the CCT’s 3rd Generation IWMP 2017, during 2013/2014 and
2015/2016, R180 million and R46 million, respectively, was spent on cleaning up of illegally
dumped waste.
By recycling C&DW and realising its resource/economic value, illegal dumping may be
discouraged, resulting in less financial resources being needed for clean-up. Furthermore,
disposal tariffs can be structured in such a way as to encourage the disposal of clean
building materials and penalise or prohibit the disposal of mixed contaminated C&D waste.
Municipalities may also reward generators that dispose of clean C&DW, instead of paying
contractors to clean-up contaminated C&DW.
Cost savings
Re-using and recycling C&DW may offer cost saving benefits to contractors in terms of
avoided disposal costs, avoided purchasing of new materials, by re-using existing materials,
as well as provision of additional income from the sale of materials. In the CCT the disposal of
clean C&DW at certain drop-off facilities are free of charge up to a certain quantity.
Job creation
Recycling of C&DW creates new employment opportunities related to salvaging, recycling
and the manufacture of recycled content materials. Municipalities who allow salvaging at
their WDFs may need to apply for a variation to their existing WMLs. Recycling has the
potential to create more jobs than disposal (see Table 4).
20
Table 4: Job potential from selected re-use, recycling and disposal industries (Source: Institute for Local
Self-Reliance, 1997
Type of Operation
Jobs per
10,000
(Tonnes Per
Year)
Product Reuse
Computer Reuse 296
Textile Reclamation 85
Misc. Durables Reuse 62
Wooden Pallet Repair 28
Recycling-based Manufacturers 25
Paper Mills 18
Glass Product Manufacturers 26
Plastic Product Manufacturers 93
Conventional Materials Recovery Facilities 10
Composting 4
Landfill and Incineration 1
3.2 Barriers to recycling C&DW
The benefits of recycling C&DW are well known. However, many barriers and challenges exist
regarding the recycling of C&DW and the uptake of recycled C&DW materials.
Lack of confidence in the quality of recycled materials
As the sources of C&DW vary drastically in composition, the quality of the crushed aggregate
recycled is difficult to guarantee and could potentially pose a hurdle in the specification of
recycled C&DW in construction plans. The perceived quality of recycled materials may
discourage its use, thereby reducing potential markets for uptake of these materials. This is
particularly relevant in the construction industry which needs to align with the SABS
requirements and which requires consistent performance from construction materials. The
drafting of universally accepted engineering standards and specifications that
21
accommodate secondary materials is required in order to address concerns surrounding the
quality of products made from recycled goods. These standards should be drafted in
collaboration with academic institutions and industry.
Lack of markets for the uptake of recycled C&DW
Recyclers in the province have had difficult times due to low market demand for certain
recycled materials. The uptake of recycled materials could be encouraged by ensuring the
quality of these materials. Material specifications should be amended to include secondary
materials. Further testing is required for some secondary materials that is not required for
natural aggregate for grading (Barnes, personal communication, 2018, January 18).
The RecMat (recovered materials) committee which comprises representatives from the
South African National Road Agency Limited (SANRAL), CC), the provincial Department of
Transport and Public Works, the Concrete Institute, Stellenbosch University, Afrimat, Martin
and East, and GreenCape was initiated to develop guidelines for the application of
processed builders’ rubble in roads. The committee is currently facilitating the development
of best practice guidelines for the crushing industry to ensure high quality products. The
longer-term goal being to stimulate the development of material specifications for road
building aggregates that include processed builders’ rubble (Barnes & Rudman, 2016).
Restrictive legislation
Legal requirements for the establishment of waste facilities such as rubble crushing facilities,
may also be a deterrent for C&DW recycling e.g. in the CCT, crushing companies have to be
accredited with the municipality in terms of the City’s Integrated Waste Management By-
law, 2009. Other legislation which may apply would include legislation and by-laws
pertaining to air quality (dust) and noise impacts often associated with activities such as
crushing. Up until recently, many of these facilities also required a WML in terms of the
NEM:WA, resulting in time and cost implications. The requirement for a WML often
discouraged the establishment of crushing facilities or limited their size (operational input) in
order to avoid triggering a WML. The new Norms and Standards for the Sorting, Shredding,
Grinding, Crushing, Screening or Bailing of General Waste were recently published (October
2017) and require all relevant waste facilities to register with the Competent Authority and
those meeting the threshold to comply with the requirements of the norms and standards.
Low cost of waste disposal
The low cost of waste disposal results in landfilling rather than recycling, being the preferred
method to handling C&DW. Low WDF fees are attributed to the absence of cost-reflective
tariffs relating to waste disposal. The costs involved in providing waste disposal services is thus
22
not fully accounted for in the tariff price setting. Establishing the optimal tariff structure is site
specific and must balance the problem of having to clean up illegally dumped C&DW and
the feasibility of collecting sufficient volumes of clean C&DW to enable recycling. Recycling
in large Metros such as the CCT, where large demolitions are frequent and generate a
constant source of fairly uniform C&DW may also be more viable than in small towns where
small erratic sources of mixed C&DW are generated and received.
Contamination of recyclables due to lack of source separation
Separating C&DW at source eliminates the contamination of materials. Contamination of
C&DW reduces the value of the recycled product since more time and effort is required to
process the material. Separating waste material at smaller construction sites is more
challenging than larger sites due to space constraints. This can, however, be manipulated by
offering incentives such as free acceptance of clean C&DW. Proper site management at the
WDF where people are directed to dispose of certain C&DW at a specific location on the
WDF can also contribute to the ensuring that the C&DW stays clean.
Lack of design for deconstruction
Current demolition practices focus on the destruction of buildings. Buildings/structures for
demolition should be deconstructed rather than demolished. This will ensure that the
recovery of recyclable building waste/materials is maximised for reuse or recycling. All
demolition activities must consider a deconstruction plan to ensure recyclable materials are
retrieved in a way that ensures the sale of such materials has more value. The Department’s
draft model by-law for municipalities (which is currently in its final vetting stages), provides for
deconstruction plans to be submitted along with demolition plans.
23
4 Proposed mechanisms for facilitating C&DW recovery
and increasing diversion
The goal of increasing C&DW diversion requires intervention from both the private and public
sectors. Figure 7 indicates the points of intervention during supply, processing and demand
for C&DW required by these sectors including the formation of partnerships between the
aforementioned. This chapter will further elaborate on what measures municipalities may
employ to manage and divert C&DW.
Figure 7: Public and private scctor interventions in developing C&DW market (Source: GreenCape,
2016b)
4.1 Including C&DW management provisions in municipal by-laws
Municipalities derive power from the Constitution to make and administer by-laws on
matters which it has the right to administer. This includes inter alia refuse removal, refuse
dumps and solid waste disposal and municipal planning. The Municipal Systems Act,
(Act no. 32 of 2000) sets out the process of developing a by-law. By-laws relating to
waste management should be aligned with the NEM:WA. Currently, most municipalities
either do not have waste management by-laws or their by-laws are outdated and not
aligned with the NEM:WA.
Municipal by-laws may be used to regulate the management of C&DW. The
Department is in the process of developing a model integrated waste management
by-law, which is currently in the final vetting stages. This by-law may be used by
24
municipalities to provide a legal and administrative framework, within which the
municipality can manage and regulate waste management activities, ensuring
integrated waste management and efficient delivery of waste services. The integrated
waste management by-law includes provisions for the separation, recycling and re-use
of building waste; demolition plans; deconstruction plans; building waste storage; and
the management, removal and disposal of building waste. It also includes provisions for
municipalities to direct waste generators to prepare and submit waste management
plans for approval. When the model by-law is published, it may be accessed from the
provincial website, https://www.westerncape.gov.za/documents/#publications.
4.2 Requesting Integrated Waste Management Plans as part of the
building approval process
Municipal by-laws may be used to include a provision to request an integrated waste
management plan (IWMP) for construction projects. The aim of an IWMP is to improve
waste management processes during construction. IWMPs should be approved by
WMOs at municipalities and should ideally be included as part of the building plan
approval process. Once building approval is provided, building control officers must
monitor adherence to IWMPs and waste management onsite. Building control officers
should only sign-off on the site upon receipt of all waste manifests.
Municipalities may follow the process below to incorporate IWMPs into their building
plan approval process.
25
Threshold (s) (if any) for the requirement of
an IWMP is/are triggered
Owner submits IWMP along with building
plan approval application and supporting
documents to municipality
Municipality circulates application
documents internally
Building plan approval process
IWMP approval process
IWMP submitted to WMO for approval
WMO is satisfied with the information
provided in the IWMP
WMO is not satisfied with the information
provided in the IWMP
Additional information / amendment to
IWMP /revised IWMP requested
Owner submits amended documentation
Figure 8: Integration of IWMP process within the building plan approval process
26
Municipalities may request the minimum information requirements for an IWMP and/or
develop an IWMP template. As a guide, the following specific information should be
included in an IWMP:
Additional information may also be requested e.g. targets in terms of making use of
material containing recycled content.
Thresholds
A threshold may be set so that only developments meeting certain criteria would be
required to submit an IWMP. The following attributes/combination of attributes have
been used in other countries to set thresholds.
Number of residential units
Floor area
Volume of C&DW to be generated
Monetary value of project
Deposit-based system
To ensure adherence to the IWMP, municipalities could also create a deposit-based
system, whereby a fee is paid upon receiving building plan approval. The fee may be
determined according to project size or value. A portion of the deposit would be
redeemed in proportion to the level of compliance to the IWMP.
Landowner and contact details
Contact person, designation and contact details
Project description
Project location
Estimated waste quantities to be generated for each C&DW material type
(including hazardous waste)
Potential impacts of the waste to be generated on the environment
Waste minimisation targets for each potential waste type to be generated
Source separation of waste
Measures for waste avoidance, minimisation, re-use, recycling and disposal
Services required for the storage, collection, transportation and disposal of
waste
27
Building control officers
It is important that building control officers are made aware of the need for proper
C&DW disposal. Building control officers should ensure that waste generated during
construction is properly separated and disposed of prior to granting an occupancy
certificate.
Public awareness
Municipalities must undertake public awareness-raising on the specific contents of an
IWMP, the separation of C&DW and on the potential re-use and recycling of C&DW.
Information pamphlets containing the aforementioned information should be placed
at municipal building offices. Awareness materials should also be placed on the
municipality’s website and/or sent along with municipal accounts to residents and
businesses.
4.3 Establishing public-private partnerships
The Municipal Public-Private Partnership Regulations, 2005 in terms of the Municipal
Finance Management Act, 2003 (Act No. 56 of 2003) define a Public-Private
Partnership (PPP) agreement as a commercial transaction between a municipality and
a private party. The private party either performs a municipal function for or on behalf
of a municipality, or manages or uses municipal property for its own commercial
purposes, or does both. PPPs involve the use of the capacity, technical skills and
finances of the private sector to assist the public sector with the delivery of essential
infrastructure services. In traditional government infrastructure projects, the public
sector is responsible for the capital and operating costs. PPPs however provide a
mechanism for government to procure and implement public infrastructure and/or
services using the resources and expertise of the private sector.
The Municipal Service Delivery and PPP Guidelines (2007) detail the process for
developing and implementing public-private partnership projects, summarised in
Figure 9.
28
Figure 9: Public-private partnership project cycle (Source: Municipal Service Delivery and PPP
Guidelines, 2007)
29
Public-private partnership projects with respect to C&DW processing and recycling
Municipalities may form public-private partnerships with private C&DW crushers to process
C&DW, e.g. the municipality could provide land and access to stockpiles and incoming
materials (GreenCape, 2015). The private party would be responsible for operations and
provide expertise and equipment. It is important however, that both parties benefit from
public-private partnerships.
Table 5 provides factors for recommendations to be considered when undertaking crushing
tenders based on survey responses with private crushers.
Table 5: Considerations for rubble crushing tenders based on the perspectives of the crushing industry
(Source: Based on recommendations contained in GreenCape, 2015)
Factors Recommendations
Markets for secondary materials The contract should not specify
process or products (experienced
crushers will handle and process
material to their advantage at their
own discretion for good material
sales).
Material sales Materials to be sold directly at landfill
gates to reduce costs associated with
logistics.
Quality of material Contamination of material must be
minimised to improve quality of
material.
Recommended: laboratory facility for
material testing.
Quantity of material At least 300 tonnes per day required
in order to reach profitability.
Experience of crushing companies Method statement and details of
experience in crushing to be included
in bid documentation.
30
Diversion targets Low initial target, scaling up as the
contract progresses.
Costing Municipality to include as accurate
(as possible) monthly C&DW figures
and types entering WDFs.
Exclusion of establishment costs in the
tender for siting and setting up the
sorting, screening and crushing
equipment.
Land should be rent-free due to low
value of material.
An example of a public-private partnership between Stellenbosch Municipality and Use-It:
In February 2015, the Stellenbosch Municipality undertook a Compressed Earth Block (CEB) pilot
project and the tender was awarded to Use-It to manufacture 480 000 blocks from builders’
rubble and clay. There were a number of challenges with the project e.g. theft and vandalism
of supporting infrastructure, and lack of uptake of the product by the municipality for
construction projects, which impacted on the storage space for stockpiles. Despite all the
challenges, more than 320 000 blocks were manufactured which met construction
specifications. Some were used in paving contracts, and the Local Economic Development
Department also put a claim for 110 000 blocks for their planned economic hub in Idas Valley.
The project earned the municipality a Certificate of Outstanding Achievement in the Innovation
Project category during the 2015 Greenest Municipality Competition.
31
Supporting co-operatives
The South African government is promoting co-operatives as a means to alleviate poverty
and unemployment, and stimulate economic growth. Currently co-operatives in the waste
sector face many challenges including lack of infrastructure (premises, transport and
equipment), operational challenges (administration, financial and governance) and weak
capability (knowledge and skills) (Council for Scientific and Industrial Research (CSIR), 2015).
A longer-term approach of mentorship and partnership with co-operatives is considered
necessary to see the development of co-operatives in the waste recycling sector (CSIR,
2015).
Most co-operatives collecting and sorting recyclables, are active in the mainline recycling
sector (i.e. paper, plastic, glass and metal beverage cans), opportunities however do exist in
the C&DW sector (CSIR, 2015). Municipalities may assist co-operatives by engaging with
them and offering support, assisting in problem identification and ensuring that funding is
provided where needed. It is also important that municipalities put Memoranda of
Understanding and contracts in place with co-operatives in order to allow them to plan
better and ensure longer-term working relationships (CSIR, 2015).
4.4 Awareness-raising
Preventative, minimisation and diversion interventions with respect to C&DW need to occur
at all stages of development of the projects, not just on site. Municipalities need to influence
projects from the design, construction and demolition stages so architects, procurement
managers, site managers and contractors can choose and use materials less likely to have a
huge environmental impact in terms of waste (European Commission, 2011). Municipal
education and awareness initiatives for C&DW minimisation need to emphasise separation of
the waste materials at source to avoid contamination with hazardous construction wastes.
Hazardous construction wastes increase the disposal costs and therefore it is viable
financially for site managers to ensure source separation. The methods and materials used to
raise awareness need to be appropriate for the target stakeholders and in this case that
includes architects, procurement managers, site managers and contractors (Afrika, 2010).
These methods can be in the form of training and/ or workshops on the -
Green procurement guidelines for State-Subsidised Housing in the Western Cape
(2016/17),
Green procurement guideline (2013),
32
Integrated waste management practices and procedures to engage stakeholders in this
sector with regards to potential waste avoidance, minimisation and diversion
opportunities throughout the planning and development of projects.
One of the major challenges for municipalities is illegally dumped construction and
demolition waste for which removal results in high costs annually. Reducing tariffs for disposal
of the material has been shown not to work, therefore law enforcement in combination with
awareness needs to be boosted to curb illegal dumping. Limited law enforcement is
particularly an issue in smaller municipalities where there are fewer Environmental
Management Inspectors (EMIs). The training of EMIs together with community focussed
awareness initiatives should be implemented.
Environmental awareness initiatives should include but not be limited to clean-up
campaigns, illegal dumping signage with Law Enforcement contact details, billboards,
posters, flyers, radio programmes, newsletters, newspapers (Figure 10), social media, mobile
SMS and WhatsApp, and door-to-door visits for those stakeholders without access to
communication devices. The implementation of fines and imprisonment for those that break
the law by dumping C&DW illegally needs to be fully implemented without regard for
financial circumstances of the perpetrators and this should be indicated on boards at all
illegal dumping hotspots. It might be ideal to also have contact details of recyclers and re-
users willing to accept non-hazardous C&DW at illegal dumping hotspots. Information
regarding what can be done with the waste should also be included in the awareness
material as a means to motivate for behaviour change within the sector.
33
Figure 10: Stellenbosch Muncipality's environmental awareness newspaper (Source: Stellenbosch
Municipality, 2016)
34
4.5 Green Procurement
Green procurement means purchasing products and services that cause minimal adverse
environmental impacts. It incorporates human health and environmental concerns into the
search for high quality products and services at competitive prices (Environmental Protection
Department, n.d.). Within the construction sector, green procurement is defined as the
purchase of environmentally friendly products and services, the selection of contractors and
the setting of environmental requirements in a contract (Green Procurement, n.d.).
Oosterhuis et al (1996) highlighted that green procurement is an instrument for product
related environmental policy and suggested that sustainable purchasing be based on:
Careful consideration of the goods, materials or services impact on the environment,
economy, and human health and well-being;
Consideration of market factors, such as specifications, quality, delivery date and
price of good, material or service; and
Preference being given to the purchase of environmentally preferable goods and
materials whenever they perform acceptably and are available at a reasonable
price.
Figure 11: Green Procurement Cycle (Source: http://oxmansafety.com/green_hotels/sustainable_
purchasing/ )
35
The principles of pollution prevention, life cycle perspective and resource efficiency are
common to all of these green purchasing initiatives (Zhou et al., 2004):
Pollution Prevention
Avoiding the creation of waste from the start of a process;
Reducing or eliminating toxicity, air and water emissions;
Preventing the transfer of pollution from one environmental medium (air, water,
or land) to another; and
Includes source reduction and waste reduction which prevent the creation of
wastes rather than waste management after it is created.
Life-Cycle Perspective
Looking at cost beyond the purchase price; and
Considering costs and environmental impact over the lifetime of a product or
service (raw material extraction, manufacturing, packaging, transport, energy
consumption, maintenance, and disposal).
Resource Efficiency
Giving preference to reusable content and recycled materials over virgin
materials, as well as to the conservation of water and energy
36
Green procurement in the construction sector encompasses the minimisation of the
environmental impact of construction works in all phases of the lifecycle of a building and
other physical infrastructure, including planning/design, construction, renovation, use and
disposal/deconstruction (EPA Ireland, 2014).
Municipalities can use green procurement initiatives by incorporating the principles into their
tender specifications for municipal developments. Generally, the use of recycled material in
construction projects is not stipulated at the tender stage. Tender specifications generally
state that waste materials are to be sent to landfill as opposed to being sorted, separated
and considered for recycling. Some of the considerations for the reuse of C&DW include
quality of materials, compliance to building specifications and transportation and storage
costs.
The following criterion, adapted from the European Commission’s Buying Green handbook
(European Commission, 2011) can be used by municipalities to guide their green
procurement process:
Selection criteria: When assessing ability to perform a contract, contracting authorities
must take into account specific experience and competence related to
environmental aspects which are relevant to the subject matter of the contract. Using
this criteria preference can be given to contractors with a record of good
environmental management and waste minimisation.
Technical specifications: These constitute minimum compliance requirements that must
be met by all tenders. They need to be related to characteristics of the work, supply or
service being purchased itself. The inclusion of specific requirements like the use of
recycled materials can be stipulated at this stage.
Award criteria: These can be used to stimulate additional environmental performance
without being mandatory. Awards can be stipulated where a contractor minimises,
separates and sorts C&DW.
Contract performance clauses: These specify how a contract must be carried out. The
use of recycled materials, C&D waste avoidance, minimisation and management can
be added to the contract.
Some of the advantages of using green procurement principles in relation to C&DW
management include the minimisation in use of natural resources, increased diversion from
landfill, support of local and small suppliers and movement towards a sustainable business
environment. Some of the challenges include the availability of materials in remote areas
(transporting materials in from other areas will incur additional costs), lack of experience in
37
matching the quality of secondary materials to appropriate applications and the lack of
standards for the construction industry on the use of recycled C&DW.
4.6 Regionalisation of waste management services
Regionalisation of waste management services includes the pooling of various resources
among municipalities to deliver waste services. These resources may include financial and
human resources, technical expertise or land. There are many examples of the
regionalisation of WDFs in the province (e.g. Karwyderskraal regional WDF and Cape
Winelands District Municipality regional WDF); however regional cooperation agreements
may also be applied to recycling and recovery efforts. Regionalisation of recycling/recovery
efforts may be beneficial to municipalities as it allows them to take advantage of economies
of scale associated with larger areas and populations. An example as it applies to C&DW
processing, is the requirement for crushing facilities to process a minimum of 300 tonnes of
rubble per day to ensure profitability (GreenCape, 2015). In the case of many of the smaller
municipalities, WDFs only receive small volumes of C&DW (figure 12), which would hamper
profitability. In this scenario, it may be more viable for municipalities to enter into regional
cooperation arrangements to ensure that sufficient quantities of material are available for
processing. Considerations when entering cooperation agreements and establishing regional
facilities include economic transport distances, economies of scale, availability of feedstock
and the creation of local employment opportunities e.g. local diversion would ensure jobs
are created locally. It must be highlighted however, that regional cooperation agreements
may be challenging with respect to low value material, which is more suited to a local
economy. Transport distances could break the business case. In these cases, it might be
The Danish Environmental Protection Agency (2013) shared an example of green procurement
success in their report. The Danish kindergarten “Brobækken” is built of bricks obtained from
construction waste from Odense citizens. Gamle Musten (“Old Bricks”) has developed a
patented technology to recycle construction waste. The old bricks are cleaned, sorted and
stacked – and are then ready to be reused for new construction. This way 1 tonne of CO2 is
saved every time 2,000 bricks are recycled.
The company has noted that their increase in sales has resulted in the expansion of the
company with a new factory and 6-7 new employees. Sales to the public gives an increased
volume, so the production machinery is utilised more evenly and public-sector customers
provide showcases in public spaces.
38
feasible if reverse transport logistics are used (Barnes, personal communication, 2018,
January 18).
0 50 100 150 200 250 300
OudtshoornKannaland
GeorgeMossel Bay
BitouKnysna
Hessequa
DrakensteinLangeberg
Breede ValleyStellenbosch
Witzenberg
LaingsburgPrince Albert
Beaufort West
Cape AlgulhasOverstrand
SwellendamTheewaterskloof
SwartlandBerg River
CederbergSaldanha BayMatzikamma
tonnes/day
Mu
nic
ipa
lity
Construction and demolition waste generated per day (2016)
Figure 12: Construction and demolition waste received at WDFs2
Implementation of regional co-operation agreements
Determining responsibility: The district municipality should ideally be responsible for
contractual agreements between municipalities and the operation of a regional facility.
However, if a particular local municipality has the best skills and infrastructure, that
municipality may operate or be responsible for the facility.
Task team: A task team should be formed to facilitate communication and cooperation.
The task team should comprise municipal officials as well as other interested and affected
parties. The district municipality should act as co-ordinator. It is also suggested that the
Provincial Department be included as a member of these task teams per district in order
to facilitate, assist, and guide the process.
2 Data obtained from DEA&DP’s Waste Information Unit (IPWIS, waste calculator and
weighbridge data sources as provided by municipalities)
39
Feasibility study: Identify needs and develop goals e.g. diversion target and determine
how regionalisation may be used to meet these goals. The potentially high cost
associated with transporting C&DW materials must be assessed and weighed against
potential benefits of regionalisation.
The Department is planning to develop a guideline that will assist municipalities with the
regionalisation of waste management services. Municipalities will be notified upon
completion of the guideline.
4.7 Providing infrastructure to support the collection and recycling of
C&DW
The recovery and recycling of C&DW requires the development and maintenance of
infrastructure to ensure that C&DW is collected, separated and processed for re-use.
DEA&DP’s Infrastructure Study, undertaken in 2016, assessed the infrastructure required to
remain compliant with WMLs and to achieve waste diversion targets. These include drop-off
facilities, MRFs, and crushing facilities. The reports provide a breakdown of the costs of
infrastructure; these are included in the discussion below. The results of the reports may be
useful in assisting municipalities with budgeting for required infrastructure. To ensure proper
planning, municipalities must identify and include budgets for planned infrastructure in their
Integrated Development Plans and Service Delivery and Budget Implementation Plans.
Municipalities must also be aware of the legislative requirements associated with the
construction and operation of facilities. It is important to note that municipalities must register
and report all quantities of waste, including C&DW, recovered and disposed of on IPWIS, as
well as adhere to norms and standards and other applicable environmental legislation.
Infrastructure for the collection, recovery and processing of C&DW are discussed further:
4.7.1 Collection of C&DW
Drop-off facilities
Drop-off facilities provide an opportunity for the public to drop off C&DW and other
recyclables free of charge or at minimum cost. It also provides an opportunity to separate
C&DW. Several factors need to be considered in terms of siting the facility. Drop-off sites
should be accessible and ideally located close to communities e.g. the CCT has drop-offs
located within 7km radii from most properties as a means to maximise accessibility. Locating
facilities at/near illegal dumping hot-spots may assist in reducing dumping. Drop-off facilities
are also often located at transfer stations that have material recovery facilities (MRFs) to
ensure on-site recovery. Furthermore, consideration should be given to the operating hours of
40
these facilities, as longer operating hours increase accessibility to the public and may also
assist to reduce queuing times at high-traffic facilities. It must also be ensured that enough
staff is available to oversee the drop-off facilities. If possible, law enforcement should be
present at facilities to ensure that valuable materials are not removed without permission
from the facility, which may result in financial loss to municipalities and their partners.
Time & Costs
Existing waste management facilities may be used to accommodate drop-off facilities since
some of the infrastructure would already be in place and may thus provide cost savings
(DEA&DP, 2015). According to the Assessment of Municipal Integrated Waste Management
Infrastructure Study, the cost of a drop-off facility comprising two 30m2 container bays,
paved operating areas, entrance control and fences is estimated at R2 700 000, excluding
vat (Table 6) (DEA&DP, 2016). The cost of constructing these facilities may however differ
quite substantially depending on existing infrastructure as in the case with De Doorns, in
which higher costs are attributed to the cost of constructing a weighbridge and an access
road (Table 7).
Table 6: Cost Estimate for the Development of a Waste Drop-off Facility (Source: DEA&DP, 2016)
41
Table 7: Cost Estimate for Constructing a Drop-off Facility in De Doorns (Source: DEA&DP, 2016)
The construction of drop-off facilities is expected to take between 3-4 months depending on
the containers used (DEA&DP, 2016).
Legislation
Since drop-off facilities entail the storage of waste, adherence to the National Norms and
Standards for the Storage of Waste, 2013 (GN. No. 926) is required. New facilities are required
to register with the Department (Contact person: Eddie Hanekom
[email protected] or 021-483 2728) within 90 days prior to construction.
With respect to general waste, only facilities with a capacity to store in excess of 100m3 of
waste are required to register in terms of these norms and standards. Facilities storing general
waste below this threshold, are not required to register with the Department. These norms
and standards cover aspects relating to location, construction design and management of
waste storage facilities. In addition, it provides requirements for training, emergency plans,
monitoring, auditing, record keeping and decommissioning.
42
Other considerations
To deter illegal dumping and to encourage the public to drop-off their C&DW, free rubble
disposal at drop-off sites for residents and businesses may be implemented. The CCT has
implemented free rubble disposal of up to 3 loads X 1.5tonnes vehicle carrying capacity per
day. Other methods of pricing that may be used include free disposal for clean builder’s
rubble and charges for mixed rubble, so as to encourage separation at source. The
Overstrand Municipality is currently implementing this method. Another potential issue that
should be considered is long queueing at drop-off sites, which may discourage residents or
businesses from dropping off their waste. As previously mentioned long queues could be
mitigated by extending operating hours. Furthermore, it has also been suggested that it may
be beneficial to provide vehicles carrying clean builders’ rubble with a separate queue to
the enter the facility. This may also further incentivise source separation (GreenCape, 2015).
4.7.2 Recovery of C&DW
Material recovery facilities (MRFs) are facilities where waste is sorted into various waste
streams by using either a manual or automated system. MRFs are generally built by
municipalities and outsourced to a service provider to undertake the operations of the
facility. A MRF may also be used as a public waste drop-off facility.
Proposed waste drop-off facility
General waste storage > 100m3 / hazardous
waste storage > 80m3
General waste storage ≤100m3 / hazardous
waste storage ≤80m3
Register with the Department in terms of the
N&S for the Storage of Waste and comply all
the requirements of the Norms & Standards
No registration required
90 days prior to construction
Figure 13: Thresholds for compliance with the Norms and Standards for the Storage of Waste, 2013
43
Legislation
Since MRFs may entail the storage of waste, adherence to the National Norms and
Standards for the Storage of Waste, 2013 (GN. No. 926) is required. New facilities are required
to register with the Department (Contact person: Eddie Hanekom
[email protected] or 021-483 2728) within 90 days prior to construction.
With respect to general waste, only facilities with a capacity to store in excess of 100m3 of
waste are required to register in terms of these norms and standards. Facilities storing general
waste below this threshold, are not required to register with the Department.
Furthermore, since sorting of waste is undertaken at MRFs, adherence to Norms and
Standards for the Sorting, Shredding, Grinding, Crushing, Screening or Baling of General
Waste, 2017 (GN. No. 1093) is required. All new facilities are required to register with the
Department (Contact person: Eddie Hanekom [email protected] or 021-
483 2728) within 90 days prior to construction. However, only facilities with an operational
area exceeding 1000m2 (excluding storage area) must adhere to the specific requirements
of the norms and standards. The definition of “operational area” does not include the
storage area in terms of these norms and standards, whereas the definition provided in the
List of Waste Management Activities includes the storage area in its definition of “operational
area”.
These norms and standards cover aspects pertaining to access control, operations,
emergency preparedness plans, monitoring and inspection, auditing, reporting and
decommissioning of facilities.
44
Please note:
Waste facilities which are already registered in terms of the National Norms and
Standards for the Storage of Waste and are sorting, shredding, grinding, crushing,
screening or baling general waste need not register in terms of the Norms and
Standards for the Sorting, Shredding, Grinding, Crushing, Screening or Baling of
General Waste, but must comply with theses norms and standards.
Existing waste facilities must register within 90 days of publication of the Norms and
Standards for the Sorting, Shredding, Grinding, Crushing, Screening or Baling of
General Waste.
Proposed MRF
Operational area < 1000m2
Operational area > 1000m2
Register with DEA&DP
Comply with Duty of Care
principle (s28 of NEMA and
s16(1) & s16(3) of the NEMWA)
Register with DEA&DP
Comply with all the
requirements of the Norms &
Standards
90 days prior to construction
90 days prior to construction
Figure 14: Threshold for adhering to the Norms and Standards for the Sorting, Shredding, Grinding,
Crushing, Screening or Baling of General Waste, 2017
45
4.7.3 Processing
There are several stages in processing C&DW material i.e. separation, conveying, crushing
and screening. Processing however does not always follow this sequence, and may consist of
multiple actions in which procedures are repeated (Wickins, 2013). Municipalities may
through a tender process, have private companies crush the waste material. Prior to crushing
of materials, unsorted waste must first be sorted to remove contaminants. This is an important
step as contamination of the material can affect the quality of the final product. Crushed
materials are then screened and segregated into various particle size categories. Crushed
particles of a required size pass through screens while larger particles are rerouted to the
crushing process. Screens may also be used to filter out fines and other contaminants
(Wickins 2013).
Figure 15: Crusher at Devon Valley WDF, Stellenbosch
Legislation
Crushing facilities, must adhere to the requirements of the Norms and Standards for the
Sorting, Shredding, Grinding, Crushing, Screening or Baling of General Waste, 2017 (GN. No.
1093). All new facilities are required to register with the Department (Contact person: Eddie
Hanekom [email protected] or 021-483 2728) within 90 days prior to
construction. However only facilities with an operational area exceeding 1000m2 (excluding
storage area) must adhere to the specific requirements of the norms and standards. The
definition of “operational area” does not include the storage area in terms of these norms
and standards, whereas the definition provided in the List of Waste Management Activities
includes the storage area in its definition of “operational area”.
These norms and standards cover aspects pertaining to access control, operations,
emergency preparedness plans, monitoring and inspection, auditing, reporting and
decommissioning of facilities.
Please note:
46
Waste facilities which are already registered in terms of the National Norms and
Standards for the Storage of Waste and are sorting, shredding, grinding, crushing,
screening or baling general waste need not register in terms of the Norms and
Standards for the Sorting, Shredding, Grinding, Crushing, Screening or Baling of
General Waste, but must comply with theses norms and standards.
Existing waste facilities must register within 90 days of publication of the Norms and
Standards for the Sorting, Shredding, Grinding, Crushing, Screening or Baling of
General Waste.
4.7.4 Potential end-use applications
Within the Western Cape, C&DW is used for the following applications in the various
municipalities:
Table 8: Applications of construction and demolition waste in various municiipalities
Municipality Material Application
(examples)
Cape Winelands DM Drakenstein LM Mixed rubble Crushed rubble used
for landfill cover and
roads at WDF.
Stellenbosch LM Crushed rubble Brick-making (project
complete)
Central Karoo DM Beaufort West LM Mixed rubble Used for landfill cover
and/or filling up
potholes at the site.
Concrete Slope stabilisation
City of Cape Town Asphalt TDA Department is
deconstructing roads
within the City of Cape
Town, stockpiling and
re-using some of the
layers.
Timber and
bricks
Sold for re-use by drop-
off SMME contractors.
47
Sand and mixed
rubble
(unprocessed)
Landfill cover
Preferably sand,
clay then rubble
in order of
preference
(unprocessed).
Slope stabilisation
Gravel, sand,
mixed
(unprocessed)
Roads at WDFs
Eden DM Hessequa LM Mixed rubble
and gravel
Slope stabilisation
Mixed rubble
and bricks
Roads at WDFs
Knysna LM Bricks Brick recovery
permitted at site.
Swellendam Mixed rubble Landfill cover
Overberg DM Cape Agulhas LM Sand, earth and
gravel
Landfill cover
Bricks, sand and
gravel
Slope stabilisation
Gravel Roads at WDFs
Overstand LM Bricks, sand and
concrete
Landfill cover
Theewaterskloof LM Earth, gravel and
sand
Landfill cover
West Coast DM Matzikamma LM Gravel and sand Landfill cover
Saldanha Bay LM Bricks and
concrete
Landfill cover
48
(unprocessed)
Swartland LM Earth, gravel and
sand
Landfill cover and
slope stabilisation.
Concrete, gravel
and bricks
Roads at WDFs
It must be noted that many of the above applications for landfill maintenance do not match
the high quality material available (rubble). The low value rubble materials should be used
for landfill maintenance, whilst clean concrete, and clean mixes of concrete and fired clay
brick should be used for the higher quality applications in roads and foundations of structures
(Barnes, personal communications, 2018, January 18).
The following potential applications for C&DW exist:
Table 9: Applications for Construction and Demolition Waste
Construction and DW type Potential applications Waste minimisation category
Concrete Crushed and used for
construction site applications
(e.g. foundations for
structures) and roadwork
applications (e.g. road sub-
base and excavation fill
applications).
Recycle
Bricks Building and paving. Re-use
Crushed and used as cover
material at WDFs.
Recycle
Asphalt Reclaimed asphalt may be
used to patch roads, for on-
site processing into hot-mix
for roads or road base or fill
material.
Re-use
Wood Re-use wooden frames. Re-use
49
Use in mulch production for
landscaping.
Bulking agent in compost.
Sawdust for animal bedding.
Recycle
Use as fuel.
Recovery
Drywall Soil amendment (gypsum),
cement additive (gypsum)
and new dry-wall (gypsum).
Recycle
Mixed rubble Crush for landfill applications
(landfill cover material,
berms in landfills to give
structural strength to cells,
cell cover once a cell is filled,
to provide paved and firm
tipping or off-loading zones,
particularly during rainy
conditions on landfill sites).
Recycle
Glass Re-use of windows and
mirrors.
Re-use
Green waste Landscaping purposes and
compost.
Re-use
50
5 Conclusion
Municipalities should aim to prioritise the diversion of C&DW and support the re-use
and recycling thereof. This will assist in meeting overall national waste diversion
targets as well as alleviate pressure on WDFs. This guideline outlines mechanisms for
municipalities to manage C&DW and support diversion. These include mechanisms
such as using waste management by-laws to request waste management plans
during the building approval process, the formation of private-public partnerships
and co-operation agreements between municipalities to improve C&DW
management practices and increase diversion. Green procurement is also
highlighted as a measure to ensure that building materials used in municipal
construction projects contain recycled content. Lastly, the above mechanisms need
to be supported by infrastructure, which require partnership with the private sector
and which complies with the relevant waste management legislation.
51
6 Sign off
I hereby approve the Construction and Demolition Waste Management Guideline.
Mr E. Hanekom
Director: Waste Management
Date:
52
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57
ISBN: 978-0-621-46272-2