Environment Agency Guidance
The following Environment Agency guidance documents and research reports are available for downloading. These are invaluable documents which may be used alongside your GasSim risk assessment to assist calibration, validation and interpretation of site specific model results.

Guidance on Landfill Gas Flaring V2.1
Guidance on the Management of Landfill Gas LFGTN03
Guidance for Monitoring Trace Components in Landfill Gas LFGTN04
Guidance for Monitoring Enclosed Landfill Gas Flares LFGTN05
Guidance on Gas Treatment Technologies for Landfill Gas Engines LFGTN06
Guidance on Monitoring Landfill Gas Surface Emissions LFGTN07
Guidance for Monitoring Landfill Gas Engine Emissions LFGTN08
Quantification of Trace Components in Landfill Gas. R&D Technical Report P1-491/TR, 2004.
IPPC H1. Environmental Assessment and Appraisal of BAT. Version 6. July 2003
IPPC H4. Horizontal Guidance for Odour. Part 1. October 2002.
IPPC H4. Horizontal Guidance for Odour. Part 2. October 2002.

Publications and Slide Shows
Attenborough, G.M., Hall, D.H., Gregory, R.G., and McGoochan, L. 2002. Development of a Landfill Gas Risk Assessment Model: GasSim. In: Proceedings for the Solid Waste Association of North America, 25th Annual Landfill Gas Symposium, 25-28 March 2002, Monterey, California, USA. - Paper - Slide Show

Attenborough, G.M., Hall, D.H., and McGoochan, L. 2002. Il modello Gas Sim per l'analisi del rischio da biogas. In: Biogas Da Discarica Problematiche Ed Opportunita, Convegno su , 8 Aprile 2002, Politecnico Di Torino, GEAM, Torino, Italy. - Paper - Slide Show

Attenborough, G.M., Hall, D.H., Gregory, R.G. and McGoochan, L., 2002. GasSim: Landfill Gas Risk Assessment Model. In: Proceedings Waste 2002, Stratford-on-Avon, 24-26 September 2002. - Paper © The Waste Conference 2002, reproduced with permission.

Gregory, R.G., Attenborough, G.M., Hall, D.H. and Deed C., 2003. The Validation and Development of an Integrated Landfill Gas Risk Assessment Model: GasSim. In: Proceedings of the Ninth International Waste Management and Landfill Symposium, S. Margherita di Pula, Cagliari, Sardinia, Italy, 6-10 October 2003. - Slide Show

GasSim 1.5 Supporting Material
Updated Trace Gas File (July 28, 2004)
GasSim V1.02 Manual Supplement
GasSim V1.03 Manual Supplement
GasSim V1.5 Manual Supplement

GasSimLite 1.5 Supporting Material
GasSimLite 1.5 Manual Supplement
GasSimLite 1.54.3 Manual Supplement
GasSimLite 1.54.3 Manual Supplement 2

GasSim 2 Supporting Material
GasSim 2 User Manual
Default GasSim2 Wind Roses
GasSim 2 Supplement 1 for version v2.00.0054
GasSim 2 Supplement 2 for version v.2.00.0061
GasSim 2 Supplement 3 for version v.2.00.70
GasSim 2 Supplement 4 for version v.2.00.71

The current version of GasSim is Version 2.0. Contact the Golder Associates
Help Desk for information about software upgrades