Data Sources

Materials

Densities

Hammond G P & Jones C I (2011). Inventory of carbon and energy v2.0 [online].

http://www.bath.ac.uk/mech-eng/sert/embodied/

Embodied CO2e factors

CPSA carbon footprint reports.

http://www.concretepipes.co.uk/sustainable-drainage.php

Hammond G P & Jones C I (2011). Inventory of carbon and energy v2.0 [online].

http://www.bath.ac.uk/mech-eng/sert/embodied/

Soil disposal CO2e factor

Defra/DECC (2011). Guidelines to Defra/DECC's GHG conversion factors for company reporting – Annex 9 [online].

http://www.defra.gov.uk/environment/economy/business-efficiency/reporting/

Installation

Diesel CO2e factor

Defra/DECC (2011). Guidelines to Defra/DECC's GHG conversion factors for company reporting – Annex 1 [online].

http://www.defra.gov.uk/environment/economy/business-efficiency/reporting/

Default machinery selections & construction durations (feasibility)

Estimated by the PJA.

Transport

One way transport distances

Mineral Products Association sustainability report 2009.

http://www.mineralproducts.org/sustainability/pdfs/MPA_SD_Report_2009.pdf

CPSA carbon footprint reports.

http://www.concretepipes.co.uk/sustainable-drainage.php

Estimated by the PJA.

HGV emissions factors

Defra/DECC (2011). Guidelines to Defra/DECC's GHG conversion factors for company reporting – Annex 7 [online].

http://www.defra.gov.uk/environment/economy/business-efficiency/reporting/

Traffic

Traffic levels

Department for Transport Statistics (2011). Motor vehicle flow by road class and region and country in Great Britain, 2010 [online]. http://www.dft.gov.uk/pgr/statistics/datatablespublications/roads/traffic

Carbon cost

Department for Transport (2011) Transport Analysis Guidance Unit 3.3.5 [online]. http://www.dft.gov.uk/webtag/documents/expert/unit3.3.5.php