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Contents Scotland TranServ Serving the South West.....................................................................................1 Environmentally Focused Projects..................................................................................................2 Assessing the Noise Attenuation Impacts of TS2010 Carriageway Surfacin........g Over Time

A78 Otter Roadkill Investigation

Assessing the Impact of Disturbance on Fossorial Water Vole Populations

Carbon Management System........................................................................................................4

Performance Indicator 19: Annual Carbon Dioxide Emissions

TRISS Vehicles.....................................................................................................................................6 Material Resources............................................................................................................................7

Monitoring Indicator 17: Use of Reused, Recycled and Renewable Materials

Waste Management.........................................................................................................................8

Monitoring Indicator 18: Waste Generation and Management

Water Consumption........................................................................................................................10


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Scotland TranServ Serving the South West

Scotland TranServ is entering its sixth year as contract holder of the 4th Generation Term Contract for Management and Maintenance of the Scottish Trunk Road Network (South West Unit). This report sets out our current environmental and sustainability performance including environmental projects we have been undertaking throughout the South West Unit. We continue to support Transport Scotland in achieving Scottish Government objectives and targets for reducing greenhouse gas emissions and protecting our natural heritage. This drives us to actively seek opportunities for improvement in the sustainability performance of projects and promote environmental enhancement. Our performance is supported throughout design, construction and maintenance activities by including sustainability considerations within each environmental review.


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Environmentally Focused Projects

This year our Environment and Sustainability Team have undertaken a number of projects driving environmental enhancements on the south west trunk road network. Key projects include: Assessing the Noise Attenuation Impacts of TS2010 Carriageway Surfacing Over Time It is recognised by the World Health Organisation that “Traffic noise alone is harmful to the health of almost every third person in the WHO European Region”. Excessive noise interferes with people’s daily activities and their health resulting in wide ranging physical and psychological effects. The impact of disturbed sleep is of particular concern with “one in five Europeans regularly exposed to sound levels at night that could significantly damage health”. One Trunk Road Maintenance action towards reducing noise is use of a low noise road surfacing, preferred specification in Scotland is TS2010. This specification is noted as reducing road traffic noise levels, however limited studies have been undertaken to quantify this reduction or how the noise attenuation properties degrade over time as it ages and deteriorates. Scotland TranServ, in conjunction with funding from Transport Scotland’s Innovation Fund, has commenced a study to assess and quantify the noise attenuation properties of TS2010 road surfacing, with a specific focus on its performance over time. This study aims to span multiple years, with a report being produced annually detailing progress and success of this noise reduction method. This work will also provide evidence to advise future improvement of the specification and implementation of the surfacing specification.

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A78 Otter Roadkill Investigation This work investigated recent otter roadkill incidents along the A78 trunk road carriageway between Routenburn and Skelmorlie, within North Ayrshire. Initial concerns were raised after a high number of this internationally protected species were found along a small stretch of the A78 over a short period of time. To gain a better understanding of the factors that might be at play resulting in the deaths, members of Scotland TranServ’s Environmental and Sustainability Team carried out surveys of the area. The highest number of casualties coincided with high water level events which inundates culverts and disrupts usual commuting routes. Likely otter crossing points under the road were identified on site and further directed surveys are planned to understand the frequency these points are used. This work will be developed further over the coming year, providing evidence with which to identify potential locations for the installation of measures to prevent future deaths such as otter ledges.


Assessing the Impact of Disturbance on Fossorial Water Vole Populations Water voles are one of Scotland’s most threatened native mammals and a nationally significant population (adapted to grassland habitat) has established a strong population on the verges of the M8 motorway in Glasgow. Scotland TranServ recognises our responsibility to protect these voles from harm when maintaining the M8. Scotland TranServ, with funding from the Transport Scotland Innovation Fund, has undertaken an investigation into the potential disturbance of water voles to common maintenance activities such as grass cutting and light construction activities. The behaviour of water voles in response to these activities was monitored and demonstrated their ties to certain locations within their habitat as well as a strong ability to recolonize following disturbance. The knowledge gained from the water vole impact study will assist in the planning of future works and contribute to local strategies being prepared to protect water voles. We plan to deepen our involvement with the work of Glasgow’s Water Vole Ambassador to develop habitat management practices in the area.

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Carbon Management System

Performance Indicator 19: Annual Carbon Dioxide Emissions Scotland TranServ utilises Transport Scotland’s Carbon Management System (CMS), as prescribed in the Contract, to produce Performance Indicator 19. Annual emissions are presented as tonnes equivalent carbon dioxide below. Transport Scotland’s CMS comprises three elements to capture the different activities that result in carbon emissions. These are: • Embodied and transportation carbon emissions arising from projects/schemes • Estimated carbon emissions resulting from the production and transport of materials • Carbon emissions resulting from Works Contracts • Estimated using Transport Scotland Project Carbon Tool • Carbon emissions arising from the fuel to run our vehicles and the heating and lighting of facilities • Estimated using Annual Account Data Template


Data Source

Outputs

Carbon Dioxide Emissions (tCO2e) 2013/14

2014/15

2015/16

2016/17

2017/18

Embodied 1,795 Carbon

24,522*

11,018

12,805

6,671

Transport Carbon

406,583

9,645,837*

3,648,948

2,828,873

1,691,593

Works Contracts

-

-

-

278

229

Annual Account Fuel for Fuel and Utilities

2,296

1,205

922

980

795

330

159

440

559

450

411,004 tCO2e

9,671,723 tCO2e

3,661,328 tCO2e

2,843,495 tCO2e

1,699,738 tCO2e

Scheme Carbon Emissions

Utilities

Total Annual Carbon Emissions

*The principal material for four resurfacing schemes undertaken during financial year 2014/15 required to be sourced from a greater distance than is standard practice. This resulted in higher than average scheme transport associated emissions, contributing to disproportionate emissions profile for the year.

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The transportation of materials (largely asphalt) continues to contribute greatly to the overall emissions generated in our operations. Methods to reduce the need for renewal of road surfacing and foundation includes ‘retexturing’ and ‘crack and seat’ techniques. These techniques are regularly employed to increase the longevity of the road structure without reconstruction or replacement of in-situ materials as far as practicable. Asphalt Recycling The majority of asphalt waste is recovered for reuse or recycling through our supply chain. This isn’t currently possible when waste is contaminated with coal tar. To improve the recovery of coal tar contaminated planings we are preparing to undertake a trial that will enable its use at the same site following processing. This puts previously contaminated material to purposeful use within the structure of renewed road surfacing. Significant benefits are afforded both by reducing material imported and waste disposed off-site.


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TRISS Vehicles

Fuel consumption by our vehicle fleet and plant is monitored monthly and included within the Transport Scotland Carbon Management System. In addition, fuel consumption and the distances travelled by our TRISS vehicles is collected monthly. Due to unforeseen circumstances over the course of the last year consistent recordings are not available. The TRISS Team continue to strive to lower their mileage and fuel usage by utilising static observation points and reduced patrols. This has resulted in a steady reduction over previous years.

2014/15

2015/16

2016/17

2017/18

Annual Distance 220,288 Travelled (km)

204,331

179,720

81,617*

Average Monthly Distance Travelled (km)

17,028

15,593

6,801*

18,357

* Challenges with the vehicles over the duration of the year (including replacement) has resulted in inconsistent recording over the year, therefore comparisons cannot be sufficiently made with previous years.

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Material Resources

The total quantity of materials consumed during Operations and Works Contracts is recorded on a monthly basis. Values are recorded by material source including recycled, secondary, re-used, renewable or certified. This is reported on a monthly basis as Monitoring Indicator 17. The Monitoring Indicator data has been collated and is presented below as tonnes of material per ÂŁ100,000 of construction value. Monitoring Indicator 17: Use of Reused, Recycled and Renewable Materials Materials Resources Consumed Target Financial Year (tonnes per ÂŁ100,000 construction value) 2013/14

2014/15 2015/16 2016/17

2017/18

Raw Material Consumed

-

279.0

265.7

269.0

283.7

357.5

Raw Materials from Recycled or Reused Source

-

58.9*

69.8*

85.3*

31.8

36.9

Raw Materials from a Renewable or Certified Source

-

0.0

0.0

0.0

0.0

0.0

Percentage of Raw Materials from Reused, Recycled or Renewable Sources (%)

>5

21.1

26.3

31.7

11.2

10.3

* Planings were previously reported as being reused in operations. This was revised during 2015/16 and it is instead recovered and used off-site or in the manufacture of new surfacing material by our supply chain. Our target, to source 5% of our materials from reused, recycled or renewable sources, is consistently exceeded. This success is in a large part down to our hard working supply chain partners who strive to improve sustainability of their products while balancing this with meeting the high specification requirements of the trunk road network.


Waste Management

The total volume of construction and demolition waste produced by Scotland TranServ in Operations and Works Contracts since the start of the Contract is reported below. This includes waste re-used, recycled or sent for disposal to landfill. Waste data is reported on a monthly basis within Monitoring Indicator 18, the values below have been presented in tonnes per ÂŁ100,000 of construction value. Our target, to divert greater than 70% of our construction and demolition waste from landfill, is consistently exceeded. This success can be attributed to our supply chain partners who recognise the value of road surface planings. This material is reused elsewhere in the construction of roads or recycled in the production of new high specification road surfacing used on the trunk road network. Monitoring Indicator 18: Waste Generation and Management Construction and Demolition Waste

Target Financial Year

(tonnes per ÂŁ100,000 construction value)

2013/14

2014/15

2015/16 2016/17

2017/18

Waste Reused in Operations

-

150.4*

118.2*

0.1*

0.0

0

Waste Recycled

-

178.4

270.8

344.4

269.5

348.4

Waste Landfilled

-

6.2

5.8

4.2

6.3

2.3

Diverted from Landfill (%)

>70%

98.1

98.5

98.8

97.7

99.3

* As above, the reporting of planings has been revised. Planings do not meet the specification required for trunk road maintenance so cannot be directly reused, however they are a valuable material that is diverted from landfill.

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Water Consumption

Water consumed by each of our depots is recorded on a monthly basis. The following graph illustrates the total monthly volume of water consumed over the duration of the fifth year of the Contract. This consumption covers areas such as the salt saturator and vehicle washing. There is a clear trend of increased water use over the colder months due to winter maintenance activities. Cleaning our fleet and producing brine, for the spreading of pre-wetted salt, requires higher water consumption than during warmer months. Variations in water use over the winter period is strongly influenced by the weather conditions. During harsh weather in December, January and February when additional road salt treatments are required a clear increase in water consumption is observed. Last winter brought us the “Beast from the East� which strongly influenced water consumption. An additional 50% of water was consumed over the annual period as a result, when compared with 2016/17 (see graph on page 19). It is of interest that the water consumption at our Ayr Depot does not vary to as great a degree year on year as it did at Polmadie this year. It is hypothesised that this may be related to the direction of inclement weather, affecting routes to the east of the network to a greater degree than the western and coastal routes served by our Ayr Operations.


Water Consumption over Financial Year 2017/18 Polmadie

Ayr

1,400.00

Water Use (cubic meters)

1,200.00

1,000.00

800.00

600.00

400.00

200.00

0.00 Apr 17 May 17 Jun 17 Jul 17 Aug 17 Sep 17 Oct 17 Nov 17 Dec 17 Jan 18 Feb 18 Mar 18

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Water Consumption over Contract Duration Polmadie

Ayr

Erskine Bridge

8,000.00

7,000.00

Water Use (cubic meters)

6,000.00

5,000.00

4,000.00

3,000.00

2,000.00

1,000.00

0.00 2014/15

2015/16

2016/17

2017/18


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Produced in-house by Scotland TranServ Communications team. For further information: 150 Polmadie Road, Glasgow, G5 0HD 0141 218 3800 communications@scotlandtranserv.co.uk www.scotlandtranserv.co.uk @ScotTranserv

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Environment & Sustainability Report 2017/18  

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