July 26, 2014 Leave a comment
Notes from Bruce Ferguson
The IG assigns a GWP of 25 (over a 100 year time period) to methane, which is more than the figure of 21, which EPA has used in the past, but still well below the figure of 34 used by the IPCC.
2. Everything in the IG report couched in terms of the 100-year time period; the critical 20-year time period is (once again) ignored by EPA.
Reading the report it’s apparent that converting to the 20-year time period (and using a GWP of 86 instead of 25) would not only provide a sound basis for setting energy policy, but would also trigger regulatory actions. How many more local distribution companies would have to obtain CAA Title V operating permits and/or PSD’s if methane was assigned a GWP potential of 86?
No Local Distribution Companies Have Obtained GHG Permits From EPA
No local distribution companies (LDCs) have obtained GHG permits from the EPA. In general, any facility with potential to emit 100,000 tons per year (tpy) or more of GHG (measured on a CO2e basis) must obtain a CAA Title V operating permit. Additionally, new facilities with the potential to emit 100,000 tpy or more of GHGs (measured on a CO2e basis)—and greater than or equal to the applicable major source threshold (i.e., 100 or 250 tpy, depending on the source category) on a mass basis—must generally obtain a Prevention of Significant Deterioration (PSD) pre-construction permit before it can commence construction.Also, existing facilities that plan to undertake modifications that substantially increase their potential to emit GHG’s may also be required to obtain a PSD permit for GHG emissions before they can make the modifications.15
Fugitive emissions are ignored by EPA.