HSE
HSEP0918 - Appendix 1 - Waste
Table of Content
1
2
3
4
5
6
OBJECTIVES ........................................................................................................................ 2
PROCESS ............................................................................................................................. 2
2.1 Waste and recycling
2
2.2 Greenhouse gas Emission sources
2
2.3 Data Collection
2
2.3.1
Process
2
2.3.2
Waste data management
3
2.3.3
Verification and sign-off
3
2.3.4
Process and time frame
3
2.4 Calculation of Emissions
3
ROLES & RESPONSIBILITIES ................................................................................................ 4
DEFINITIONS....................................................................................................................... 4
RELATED DOCUMENTS & RESOURCES ............................................................................... 5
REVISION HISTORY ............................................................................................................. 5
Hydro Tasmania Document
Owner(s): OH&S Manager;
Environment Manager
Approver: Manager – Sustainability and Safety
Revision 3
Revision Date:
4th March
2014
HSE
1
Health, Safety & Environment - HSEP0918– Waste
Revision 3
CAUTION: Printed Document is Uncontrolled
Print Date: 06/02/2016
OBJECTIVES
Context :
Hydro Tasmania is required to report its emissions, energy consumption and energy production under the
National Greenhouse and Energy Reporting (NGER) Act.
Hydro Tasmania also reports its emissions footprint in the Annual Sustainability Report. All three scopes of
emissions are included in Annual Sustainability Report, unlike in NGERS reporting which only requires scope 1 and
2 emissions.
Purpose:
To provide guidance on waste data collection and waste emissions calculations.
Scope:
This procedure applies to all Hydro Tasmania, Entura and Momentum emissions, energy consumption and energy
production.
2
PROCESS
2.1 Waste and recycling
Hydro Tasmania manages waste, recycling and hazardous waste through management
services contracted externally. To monitor the businesses carbon footprint, emissions
associated with waste are reported. For NGERS reporting waste is not a required emission
source.
2.2 Greenhouse gas Emission sources
Scope 1 – none
Scope 2 – none
Scope 3 – waste to landfill
2.3 Data Collection
2.3.1 Process
A spreadsheet located at waste records 2012 on.xlsx is maintained on a monthly basis. All waste and
recycling disposed of is recorded on this spreadsheet, amounts of waste are calculated from the
monthly invoices received, disposal certificates and waste forms.
The spreadsheet reports the following waste data:
Waste items
Unit
Disposal method
Miscellaneous
litres
Landfill
Controlled Waste
Various units
Landfill
litres
Comments
Mostly recycled or
landfill
Do not reuse grease
Oil (disposed)
Grease reused
-
Oil (recycling )
litres
recycled
Hydrocarbons
cubic meters
landfill
Oily rugs etc.
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HSE
Health, Safety & Environment - HSEP0918– Waste
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General Waste
kgs
landfill
Recycling
kgs
recycled
Paper
kgs
recycled
Cardboard
kgs
recycled
2.3.2 Waste data management
HT responsible area and officer: Field Environmental Advisor South
Prior to 2010, general waste for Hobart and Cambridge was collected and recorded by a
separate cleaning contractor. July 1st 2010 will see one contractor, Veolia, for all general waste
and recycling for Hydro Tasmania both offices and power stations. This will enable more
efficient recording of waste disposal, recycling and reuse.
2.3.3 Verification and sign-off
Details from invoices are interpreted and quantities of waste and recycling is compiled by Bev
Armstrong, Field Environmental Advisor South. All data is entered into waste records 2012
on.xlsx .
This data can be linked for verification proposes to the finance system and accounts payable
2.3.4 Process and time frame
The Energy and Greenhouse Coordinator will download data from the master spreadsheet
located at waste records 2012 on.xlsx on a quarterly basis.
2.4 Calculation of Emissions
The methodology from the IPCC Guidelines for National Greenhouse Gas Inventories Volume
5: Waste http://www.ipcc-nggip.iges.or.jp/public/2006gl/vol5.html was used to calculate
emissions from waste. As this methodology was designed for landfill managers some
simplifications were required.
Parameters
E = Emissions generated from waste (tonnes CO2 equivalent)
W = Wasted sent to landfill (tonnes)
DOC = Degradable organic carbon (under aerobic conditions)
DOCf = Fraction of DOC decomposing under anaerobic conditions
MCF = Methane correction factor
16/12 = Molecular weight ratio CH4/C
F = Fraction of CH4 by volume in generated landfill gas
GWP = Global warming potential of methane
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Health, Safety & Environment - HSEP0918– Waste
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Simplified Equation
E = W * DOC * DOCf * MCF * 16/12 * F * GWP
Parameter Values
DOC = 0.28 (IPCC default value for Australian bulk MSW)
DOCf = 0.5 (IPCC default value for Australian bulk MSW)
MCF = 1 (IPCC default for managed landfill)
F = 0.5 (IPCC default value for Australian bulk MSW)
GWP = 21 (Nation Greenhouse Accounts Factors)
Assumptions
 Majority of HT’s waste sent to landfill is Municipal Solid Waste (MSW)
 Accounting for all emissions from waste rather than the proportion emitted each year as
waste decomposes
 Oxidation factor equal to zero (IPCC default value for Australian bulk MSW)
 Waste density estimated at 180kg/m3
3
ROLES & RESPONSIBILITIES
Specific responsibilities
Accountable Person
as outlined in the right hand column of section 3 of this procedure.
has the responsibility for following this procedure
Energy and Greenhouse
Coordinator
Responsible Officer
has the responsibility for implementation of this procedure.
Project Manager
has the responsibility for following this procedure in delivery of any project
under their control.
4
has the responsibility to ensure that all persons involved in NGER reporting
comply with this procedure and with any work instructions or plans arising out of
it.
DEFINITIONS
NGERS: National Greenhouse and Energy Reporting System
SCOPE 1: The release of greenhouse gas into the atmosphere as a direct result of an activity, or series of activities
(including ancillary activities) that constitute the facility. Mandatory to report under NGERS.
SCOPE 2: The release of greenhouse gas as a result of one or more activities that generate electricity, heating,
cooling or steam that is consumed by the facility but that do not form part of the facility. Mandatory to report
under NGERS.
SCOPE 3: Emissions that occur outside the boundary of a facility as a result of activities at a facility and are not
scope 2 emissions. Not mandatory to report under NGERS.
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HSE
Health, Safety & Environment - HSEP0918– Waste
Revision 3
CAUTION: Printed Document is Uncontrolled
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5
RELATED DOCUMENTS & RESOURCES
HSEP0918 - Energy and Emissions Reporting
6
REVISION HISTORY
Revision
number
Revision
date
1
24
September
2010
24th May
2012
2
3
4th May 2014
Detailed revision description
Reviewed by
Original Issue – This document was developed to
provide guidelines for managing environmental risks
associated with energy and emissions management
Document converted to HSE format
Nicole Sherriff
Updated link to the waste spread and the waste items
table.
Hasanthi
Kingsley
Approved by
Business
Sustainability
Manager
Sustainability and
Safety Manager
Sustainability and
Safety Manager
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