Sure. There is a vast amount of carbon that is locked up in the biomass of the forests as well as the soils of Canada. If you do something to produce fuels that disturbs that carbon, you can very easily end up in a situation of releasing more greenhouse gas emissions than you would by using fossil fuel emissions.
Don O'Connor is certainly more of an expert on this than I am.
The concern I have is that in our modelling analysis, we show a market and a need for low-carbon biofuels such that they are driving up the price of feedstock to the point where we could conceivably be logging forests to produce that feedstock, so if this kind of fuel production is existing outside of good greenhouse gas accounting and life-cycle greenhouse gas accounting, we'd be missing a really big part of the picture.
There are challenges there. I'll give you an example. B.C. has a fairly healthy export industry for wood pellets, which are used for energy in other parts of the world. Previously most of those wood pellets were coming from mill waste, leftovers after you use the wood at a lumber mill or a paper mill. However, those pellet companies have long-term contracts to deliver pellets, and if there's a downturn in the forestry industry, there is suddenly less waste. There have been incidents and reports of their bringing in whole logs, which may have been dead logs or downed logs, but they are full logs to turn into pellets. The problem is those logs would have sat as logs for a century or more and would have then delivered some of their carbon both to the soil and to the atmosphere, and if we bring them in and turn them into pellets, we're releasing those carbon emissions right away, so there are challenges with bioenergy, certainly bioenergy from forestry or agricultural residue whereby you can disturb the carbon balances within nature.