CRNG from LFG

Hi,

I noticed that there is a value of 190 gCH4/GJ for landfill gas projects on cell BX81 of the Equip Emis Factors tab. This then contributes to the Upstream HHV Results' gas leaks and flares category. Could you please clarify where this value comes from?

My thought is that it comes from the collection efficiency of the landfill, but the value is hardcoded and does not depend on the landfill gas collection efficiency. Additionally, I believe a consequential approach should be taken for the landfills as in BC they are already mandated to perform landfill gas collection and the gas in the baseline is often treated as a waste gas which is flared. If the emissions from the landfill gas collection are included, I would argue that the electricity for gas collection should also be included, as well as any other emissions for landfill management.

Could you please confirm where this value comes from and why it is hard coded?

Thank you. It also seems that the natural gas used on-site is multiplied by the upstream emission factor for natural gas rather than the lifecycle emissions. This is different from the AD and Organic Waste pathways for RNG.

The Organic Waste Fuel Production path multiplies by Cell W27 on the "Equip Emis Factors" tab, whereas the LFG path multiplies by Cell W25 on the "Equip Emis Factors" tab.