Comment Log Display

Comment Log Display

Below is the comment you selected to display.
Comment 1 for Comments on Crude Oil analysis for LCFS (lcfs-crude-oil-ws) - 1st Workshop.


First Name: Catherine
Last Name: Price
Email Address: catherine.price@shell.com
Affiliation: Shell

Subject: Albian Heavy Synthetic GHG intensity in LCFS 2013 crude baseline
Comment:
We have reviewed the recently published draft calculation of the
California Industry Average Crude Carbon Intensity for 2013.  We
have noted that GHG intensity of AHS is reported in this document
as 21.02 gCO2e/MJ, a value calculated with OPGEE 1.0.  

We believe that this value of 21.02 gCO2e/MJ contains an error due
to higher and lower heating values being confused when coefficients
from Canada’s GHGenius model (which works in HHV) were used
unchanged in California’s OPGEE 1.0 model (which works in LHV).  My
colleague Trevor Stephenson engaged in some communication on this
matter with Adam Brandt which resulted in the OPGEE 1.0 model being
corrected.  The resulting updated value of 19.86 gCO2e/MJ was
published in the minutes of CARB’s “LCFS Proposed 2013 Regulatory
Amendments” workshop of March 5th, 2013 (see
http://www.arb.ca.gov/fuels/lcfs/regamend13/Draft_Crude_CI_Values_%28OPGEEv1.1_DraftA%29_March_4_2013.pdf).

Please could you confirm that this value will be corrected in the
2013 calculation and in upcoming regulatory updates to adopt the
latest “OPGEE” model (v. 1.1) going forward?

Thank you very much.

Kind regards,

Catherine

Attachment:

Original File Name:

Date and Time Comment Was Submitted: 2014-06-24 03:44:44



If you have any questions or comments please contact Office of the Ombudsman at (916) 327-1266.


Board Comments Home

preload