Data Sources

Materials

Densities
Hammond G P & Jones C I (2011). Inventory of carbon and energy v2.0 [online]. bath.ac.uk/mech-eng/sert/embodied
Embodied CO2e factors
CPSA carbon footprint reports. concretepipes.co.uk/sustainable-drainage
Hammond G P & Jones C I (2011). Inventory of carbon and energy v2.0 [online]. 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]. defra.gov.uk

Installation

Diesel CO2e factor
Defra/DECC (2011). Guidelines to Defra/DECC's GHG conversion factors for company reporting – Annex 1 [online]. defra.gov.uk
Default machinery selections & construction durations (feasibility)
Estimated by the PJA.

Transport

One way transport distances
Mineral Products Association sustainability report 2009. mineralproducts.org
CPSA carbon footprint reports. concretepipes.co.uk/sustainable-drainage
Estimated by the PJA.
HGV emissions factors
Defra/DECC (2011). Guidelines to Defra/DECC's GHG conversion factors for company reporting – Annex 7 [online]. defra.gov.uk

Traffic

Traffic levels
Department for Transport Statistics (2011). Motor vehicle flow by road class and region and country in Great Britain, 2010 [online]. dft.gov.uk
Carbon cost
Department for Transport (2011) Transport Analysis Guidance Unit 3.3.5 [online]. dft.gov.uk/webtag