Report on the Landfill Allowances Scheme (LAS) Wales 2016/17 
 
Final results October 2017 

 
Published by: Natural Resources Wales Cambria House 29 Newport Road Cardiff CF24 0TP 0300 065 3000 (Mon-Fri, 8am - 6pm) enquiries@naturalresourceswales.gov.uk www.naturalresourceswales.gov.uk Official Statistics The information within this report is categorised as Official Statistics, and has been produced and published according to arrangements approved by the UK Statistics Authority. For more information about Official Statistics and the UK Statistics Authority visit www.statisticsauthority.gov.uk.   
For statistical matters relating to this publication please contact John Fry: john.fry@cyfoethnaturiolcymru.gov.uk 
© Natural Resources Wales All rights reserved. This document may be reproduced with prior permission of Natural Resources Wales Executive Summary This report covers the twelfth full year, 1st April 2016 to 31st March 2017, of the Landfill Allowances Scheme (LAS) in Wales1. The results presented in this report are final. The purpose of the scheme is to ensure diversion of biodegradable municipal waste (BMW) from landfill. Welsh Government sets limits on the amount of BMW waste that local authorities in Wales can landfill.  
 
Compliance headlines Welsh local authorities sent 90,8272 tonnes of BMW to landfill in 2016/17 compared to an overall Wales allowance of 390,000 tonnes. This was seventy-seven percent less (299,173 tonnes) than the allowance. All twenty-two local authorities achieved their individual allocated allowance. Wales has reduced the amount of BMW sent to landfill by eighty nine per cent (760,662 tonnes3) since the first full year of the scheme in 2005/06. Reducing the amount of BMW waste going to landfill helps to cut greenhouse gas emissions, preventing the production and release of methane into the air from landfill sites. This is important, as methane is twenty five times more powerful than carbon dioxide as a greenhouse gas. Looking at individual local authority performance for 2016/17, Blaenau Gwent, Cardiff, Denbighshire, Flintshire, Merthyr Tydfil, Monmouthshire, Rhondda Cynon Taf, Torfaen, Vale of Glamorgan and Wrexham used less than ten per cent of their allowances, while Gwynedd and Swansea used over seventy per cent of their allowance. As a whole, local authorities have continued to make good progress in diverting BMW from landfill. However, meeting the future targets up to 2020 will be particularly challenging for those local authorities that were close to exceeding their 
2016/17 individual allowances.   
 

## Contents

| 1 Background                                                                                                                        |   4 |
|-------------------------------------------------------------------------------------------------------------------------------------|-----|
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| 2 Validation - Monitoring Authority                                                                                                 |   5 |
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| 3 Local Authority Compliance                                                                                                        |   6 |
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| Annex 1 - Local authority compliance against targets                                                                                |  8  |
| Annex 2 - Reporting of local authorities                                                                                            |  10 |
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| Annex 3 - Local authority Compliance Summary Map                                                                                    |  13 |
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| Key Quality Information                                                                                                  14         |     |
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| Glossary                                                                                                                         15 |     |
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| Figures and Tables                                                                                                                  |     |

Figure 1.  Amount of BMW landfilled compared to allowance for local authorities in Wales 2016/17  
9 
Figure 2. Proportion of local authorities reporting promptly in 2016/17 compared to 2015/16 
 
11 Table 1.  Comparison of WDF and landfill site returns data showing amount of         
municipal  waste sent to landfill in Wales in 2016/17 and discrepancies between the two data sets before and after validation 
6 
Table 2.  LAS Performance for 2016/17 
8 
Table 3.  Statutory LAS reporting deadlines 
10 
Table 4.  Compliance with WDF data reporting deadlines by local authorities 
12 

## 1 Background

The Landfill Allowances Scheme (LAS) Wales4 was established through the Landfill Allowances Scheme (Wales) Regulations 2004. The purpose of the scheme is to ensure diversion of biodegradable municipal waste (BMW) from landfill. Reducing the amount of BMW waste going to landfill helps to cut greenhouse gas emissions, preventing the production and release of methane into the air from landfill sites. Methane is twenty five times more powerful than carbon dioxide as a greenhouse gas. Welsh Government sets limits on the amount of BMW waste that local authorities in Wales can landfill. Natural Resources Wales is the Monitoring Authority for the scheme and has the duty to report performance against individual local authorities' annual allowance allocations and the collective total for Wales. Natural Resources Wales is responsible for reconciling the allowances available to each local authority with the amount of BMW that they have sent to landfill. Natural Resources Wales calculate the amount of BMW sent to landfill using a mass balance approach5. The LAS Regulations also state that the amount of biodegradable waste local authorities collect should be sixty one per cent of the total collected municipal waste. The Welsh Government has since reviewed the biodegradability of municipal waste and concluded that this figure is still appropriate. Within five months of the end of the scheme year, Natural Resources Wales must determine the amount of BMW sent to landfill by each local authority. Natural Resources Wales provides the Welsh Government with the annual reconcilled data on 1st September each year. The Welsh Local Government Association (WLGA) and local authorities are consulted on the data and the final report is published on the Natural Resources Wales website, which acts as the Landfill Allowances register. Any local authority that exceeds its allowance allocation is reported to the Welsh Government and is liable to financial penalties. The Welsh Government must establish and maintain a penalties register containing details of any such liabilities. More information relating to the allocation of allowances can be found in the Welsh Government document entitled 'The Landfill Allowance Scheme: Allocation of Allowances 2009-2020'6. 

2 Validation - Monitoring Authority The LAS scheme year runs from April 1st to March 31st. Natural Resources Wales use a two stage quarterly process to audit the data after submission into WasteDataFlow7  (WDF). Stage one is a desktop audit of all the data submitted by local authorities. Stage two is a validation of WDF using landfill site returns. In 2012 Natural Resources Wales also began quarterly validation of end destination data for the statutory local authority recovery targets. This consists of a desktop audit based on the quantity of material reported as recovered each scheme year. 

2.1 Comparison of WDF and Landfill Site Returns 
 
Table 1 shows the figures for the amount of landfilled municipal waste validated by Natural Resources Wales in 2016/17. The results show the original and final discrepancy percentages between the two datasets before and after the validation. In 2016/17 there was a 0.9 per cent (or 1,384 tonnes) discrepancy between the figures after validation. This is less than the discrepancy of 1.6 per cent in 2015/16. The overall final discrepancy is well within the ten per cent discrepancy target set by the Welsh Government. This is also a big improvement compared to the original discrepancies in each quarter of the year before validation. Of the 148,477 tonnes validated by Natural Resources Wales, 137,012 tonnes were sent to landfills in Wales and 9,920 tonnes were sent to landfills in England. The remainder has been landfilled after energy from waste treatment outside of the UK. This waste has zero per cent biodegradability. After undertaking 88 checks for the local authorities throughout the scheme year, there are four that remain over a ten per cent or 100 tonne discrepancy. The causes of discrepancies between the two datasets include: 
 

 landfills report site returns using The List of Waste (or European Waste 
Catalogues), whilst local authorities report by material type in WDF.  These different reporting systems cause issues when comparing and also when distinguishing municipal waste as defined under the LAS Regulations; 
 private contractors may take non-local authority collected municipal waste 
and non-municipal waste to landfill in the same vehicles they use to collect local authority collected municipal waste. It is therefore difficult to accurately calculate the amount of local authority collected municipal waste received at the landfill site; or 
 issues with stockpiling and/or apportioning municipal waste from a landfill 
site that is used by several local authorities. 

| 2016-17            | 2016-17          | 2016-17         |
|--------------------|------------------|-----------------|
| Site Returns - MSW | WDF - MSW        | % Discrepancy   |
| sent to landfill   | sent to landfill | between the two |
| Quarter            |                  |                 |
| (tonnes)           | (tonnes)*        | data sets       |
|                    |                  |                 |
| Original           | Final            | Original        |
| 1                  |                  |                 |
| 36,948             | 39,844           | 39,751          |
| 2                  |                  |                 |
| 35,436             | 38,900           | 38,995          |
| 3                  |                  |                 |
| 24,959             | 33,327           | 33,439          |
| 4                  |                  |                 |
| 31,579             | 35,239           | 34,061          |
| Total              |                  |                 |
| 128,922            | 147,311          | 146,246         |

 * This is the total amount of Municipal Solid Waste (MSW) reported in WDF as sent to landfill that is checked against site returns. This figure will be slightly less than the total landfill figure, as some landfill waste is not validated due to apportioned rejects and rejects after several treatment processes where landfills cannot be identified or local authority portions are not clear. 

 
3 Local Authority Compliance The overall results from the 2016/17 monitoring year are shown in Annex 1 on the following pages.   
 
The annual results show that all local authorities achieved their LAS allowance obligations during 2016/17. A total of 90,827 tonnes of BMW from Wales was sent to landfill compared to the total Wales allowance of 390,000 tonnes. This means that local authorities in Wales collectively landfilled seventy-seven per cent (299,173 tonnes) less BMW than the 2016/17 allowance. The results show that twenty local authorities have considerable headroom to meet their future obligations as they used no more than seventy per cent of their allocated allowances. Blaenau Gwent, Cardiff, Denbighshire, Flintshire, Merthyr Tydfil, Monmouthshire, Rhondda Cynon Taf, Torfaen, Vale of Glamorgan and Wrexham all used less than 10 per cent of their allocated allowance. Bridgend, Caerphilly, Carmarthenshire, Ceredigion, Isle of Anglesey, Neath Port Talbot, Newport, Pembrokeshire and Powys used less than 50 per cent of their allocated allowance. Conwy used less than 70 per cent of their allocated allowance. Gwynedd and Swansea used over seventy per cent of their allowance. 

Annex 3 shows a geographical representation of LAS performance for Wales. 

Reasons for changes in the utilisation of allowances vary between years and by local authorities. Generally, changes can be attributed to: 

 changes in waste collection service provision;  changes in waste management practices and new/alternative technologies - 
diversion of residual waste to incineration with energy recovery has had a significant affect on local authority performance for LAS in recent years; 
 public participation levels in recycling schemes;  unforseen circumstances (e.g. extreme weather). 

Authority 
LAS Allowance 
(tonnes) 2016/17 
Blaenau Gwent 
8,821 
391 
4.4% 
Bridgend 
19,025 
5,579 
29.3% 
Caerphilly 
23,119 
3,115 
13.5% 
Cardiff 
39,660 
1,356 
3.4% 
Carmarthenshire 
20,997 
2,388 
11.4% 
Ceredigion 
9,655 
4,326 
44.8% 
Conwy 
17,513 
10,777 
61.5% 
Denbighshire 
11,094 
844 
7.6% 
Flintshire 
20,621 
99 
0.5% 
Gwynedd 
17,896 
14,959 
83.6% 
Isle of Anglesey 
9,867 
1,151 
11.7% 
Merthyr Tydfil 
7,621 
612 
8.0% 
Monmouthshire 
11,378 
146 
1.3% 
Neath Port Talbot 
18,910 
4,832 
25.6% 
Newport 
15,925 
3,578 
22.5% 
Pembrokeshire 
16,178 
5,057 
31.3% 
Powys 
19,282 
7,562 
39.2% 
Rhondda Cynon Taf 
27,071 
285 
1.1% 
Swansea 
30,391 
21,461 
70.6% 
Torfaen 
11,659 
745 
6.4% 
Vale of Glamorgan 
14,579 
303 
2.1% 
Wrexham 
18,738 
1,262 
6.7% 
Wales 
390,000 
90,827 
23.3% 

 
 
  
 

 Natural Resources Wales maintain a register of LAS performance for local authorities since inception of the scheme in 2004.  This register can be found at https://naturalresources.wales/guidance-and-advice/environmental-topics/wastemanagement/landfill-allowance-scheme/?lang=en 

BMW 
% of LAS 2016/17 
landfilled 
allowance used 
(tonnes) 
Under 90% 
Between 90-100% 
Over 100% 

Annex 2 - Reporting of Local Authorities 
 
Reporting deadlines for local authorities and landfill operators (see Table 3) are set out in the LAS Regulations. Both local authorities and landfill operators have to submit municipal waste returns to Natural Resources Wales8 within one month of the end of that period. 

|   Quarter  | Period                            | Reporting deadlines    |
|------------|-----------------------------------|------------------------|
|         1  | Data from 1 April - 30 June       | 31 July                |
|         2  | Data From 1 July - 30 September   | 31 October             |
|         3  | Data from 1 October - 31 December | 31 January             |
|         4  | Data from 1 January - 31 March    | 30 April               |

 In 2008/09, Natural Resources Wales produced the 'LAS Guidance on reporting and notices' which sets out the more detailed timetable for local authorities and landfill operators to meet their obligation to provide timely and accurate data under the LAS Regulations. 

Local Authorities The LAS regulations require local authorities to submit their municipal waste data to Natural Resources Wales for validation within one month of the quarter end.  Figure 2 shows the level of compliant data reporting by local authorities in Wales during 2016/17. The level of prompt reporting in Wales in 2016/17 is slightly worse than in the previous year. Fifteen local authorities consistently reported on time throughout the year (a decrease of one from 2015/16). The main reasons for local authorities reporting after the deadline included: 

 technical issues;  staffing and resource issues at local authorities;  delay in local authorities receiving data from contractors; or  extra time taken sourcing data for other reporting requirements. 
 
                                                 
 
 
NRW reports local authority compliance with the reporting deadlines to the Welsh Government. Table 4 on the following page provides more information on local authority reporting in 2016/17. 

Landfill Operators Landfill operators are required to report the amount of municipal waste received by their sites within one month of the quarter end.  Following reporting in WDF, 46 landfill sites in England and Wales were identified as receiving local authority municipal waste originating in Wales in 2016/17 - 13 in Wales and 33 in England.  Waste landfilled abroad after incineration was also reported in WDF. The total number of reported landfills has decreased from 48 to 46 in England and Wales. 

 

Local Authority 
Apr-Jun 2016 
Jul-Sep 2016 
Oct-Dec 2016 
Jan-Mar 2017 
Blaenau Gwent 
On time 
On time 
On time 
On time 
Bridgend 
On time 
On time 
On time 
On time 
Caerphilly 
On time 
On time 
On time 
On time 
Cardiff 
Within 7 days 
On time  
On time 
Over 7 days 
Carmarthenshire 
On time 
On time 
On time 
On time 
Ceredigion 
On time 
On time 
On time 
On time 
Conwy 
On time 
On time 
On time 
On time 
Denbighshire 
Within 7 days 
On time 
Within 7 days 
Within 7 days 
Flintshire 
On time 
On time 
On time 
On time 
Gwynedd 
Within 7 days 
On time 
On time 
Within 7 days 
Isle of Anglesey 
On time 
On time 
On time 
On time 
Merthyr Tydfil 
On time 
On time 
On time 
On time 
Monmouthshire 
On time 
On time 
On time 
On time 
Neath Port Talbot 
On time 
On time 
On time 
Within 7 days 
Newport 
On time 
On time 
On time 
On time 
Pembrokeshire 
On time 
On time 
Within 7 days 
On time 
Powys 
On time 
On time 
Within 7 days 
On time 
Rhonda Cynon Taf 
On time 
On time 
On time 
On time 
Swansea 
On time 
On time 
On time 
On time 
Torfaen 
On time 
On time 
On time 
On time 
Vale of Glamorgan 
On time 
On time 
On time 
Within 7 days 
Wrexham 
On time 
On time 
On time 
On time 

 
N.B. Deadlines may be extended due to weekends/bank holidays, technical issues or if agreed with an authority for extenuating curcumstances.  An extension of 1 week was also provided to all authorities for quarter 3 (Oct-Dec) returns to allow for the service question data to be updated. 

 
Key 

  
on time 
  
within 7 days 
  
over 7 days 

## Key Quality Information

1. Natural Resources Wales has six weeks to validate the data. Validation involves a 
procedure of checking that all relevant WasteDataFlow questions have been 
completed by the local authorities and any discrepancies in calculations between entered inputs and outputs are identified. Any anomalies are then communicated to the individual local authorities and remedial action is taken to resolve them. Post validation, Natural Resources Wales also request local authorities to provide evidence in relation to their waste data, which is an ongoing process throughout the scheme year. 
2. There may be some inconsistencies in the measurement of total waste since the 
waste is weighed when collected and again when it is sent for treatment. In addition, there may also be loss in weight through various treatment processes. Natural Resources Wales validate all local authority returns and require that the difference between the amount collected and the amount sent for treatment must not differ by more than 10 per cent or 100 tonnes in any quarter (whichever is the greatest figure), unless a valid explanation can be given. Natural Resources Wales has also placed more emphasis on authorities providing more evidence in relation to their waste statistics since 2012-13. 
3. WasteDataFlow is subject to continual improvement and development that can 
impact on the way that data is entered and introduce new data reports based on new data requirements. Some changes can be complex in nature producing impacts in reporting that may not be fully realised initially. All changes to the system are carefully monitored for any discrepancies between data entry and reporting. In the event that discrepancies arise, the WasteDataFlow system is adjusted and any previously published data is revised or caveated accordingly.  
 
4. The accuracy of the data reported to WasteDataFlow is entirely dependant on the 
measurement, data management and reporting by local authorities and waste operators.  While Natural Resources Wales carry out validation in accordance with the Regulations, the validation of WasteDataFlow and the cross checks with other available waste data is limited to the accuracy of those reporting.  
 
Glossary Biodegradable Capable of being degraded by plants and animals. Biodegradable Municipal Waste (BMW) 
The component of Municipal Solid Waste capable of being degraded by plants and animals. Biodegradable Municipal Waste includes paper and card, food and garden waste, and a proportion of other wastes, such as textiles. Diversion (from landfill) 
A term referring to avoiding sending waste to landfill where it can be sent to an alternative waste management option that is better for the environment. The waste hierarchy is set out at Article 4 of the revised Waste Framework (Directive 2008/98/EC). This gives top priority to preventing waste in the first place. When waste is created, it gives priority to preparing it for re-use, then recycling, then recovery, and last of all disposal (e.g. landfill). Green house Gas A term given to those gas compounds in the atmosphere that reflect heat back toward earth rather than letting it escape freely into space. Several gases are involved, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ozone (O3), water vapour (H2O) and some of the chlorofluorocarbons (CFCs). Incineration The controlled thermal treatment of waste by burning, either to reduce its volume or toxicity. Energy recovery from incineration can be made by utilising the calorific value of the waste to produce heat and/or power. Landfill Allowances Scheme (LAS) 
The purpose of the Landfill Allowances Scheme is to ensure diversion of biodegradable municipal waste (BMW) from landfill. Welsh Government allocate statutory limits on the amount of BMW waste that local authorities in Wales can landfill. Welsh Government can apply financial penalties to Welsh local authorities for exceeding allowances and failure to comply with reporting requirements. As monitoring authority for the scheme, Natural Resources Wales validates waste data submitted from Welsh local authorities and determines the amount of BMW sent to landfill by each local authority. 

 
Landfill sites  
Any areas of land in which waste is deposited. Landfill sites are often located in disused mines or quarries. In areas where they are limited or no ready-made voids exist, the 
 
practice of landraising is sometimes carried out, where waste is deposited above ground and the landscape is contoured. 

List of Waste (European Waste Catalogues) 
Serves as a common encoding of waste characteristics in a broad variety of purposes like classification of hazardous wastes. Assignment of waste codes has a major impact on the transport of waste, installation permits (which are usually granted for the processing of specific waste codes), decisions about recyclability of the waste or as a basis for waste statistics. 

 
Local authority municipal waste  
Includes household and non-household waste that is collected and disposed of by local authorities. It includes regular household collections, specific recycling collections, special collections of bulky items, waste received at civic amenity sites and waste collected from non-household sources. Local Authority Recovery Targets (LART) 
The Local Authority Recovery Targets were set under the Waste (Wales) Measure 2010 by Welsh Government and are intended to promote higher levels of recycling and to realise associated wider sustainability benefits. 

Mass Balance Approach The mass balance formula is applied quarterly to calculate the biodegradable content of landfilled local authority municipal waste for each local authority.  Welsh Government have deemed Welsh local authority municipal waste to be 61% biodegradable.  The formula uses the data reported to WasteDataFlow to adjust this percentage based on the biodegradability of waste diverted for recycling, reuse and composting.  This adjusted percentage is used to calculate the biodegradable content of landfilled waste. WasteDataFlow (WDF) 
Since 2004-05, waste data for the amount and type of local authority waste collected and how it is disposed of are collected through an online reporting system called WasteDataFlow (www.wastedataflow.org). In Wales this is managed by Natural Resources Wales.