From: Rahul Pendse <RPendse@trinityconsultants.com>

Sent: Thursday, November 13, 2014 3:46 PM

To: Land, Eva

Cc: Carlson, Sara; Kathryn Maness (Kathryn.Maness@anadarko.com)

Subject: RE: Anadarko BlackHawk/BlackHornet PSD-Title V Application Revised 

GHG Emissions 

Hi Eva,

I confirm the use of Global Warming Potentials provided in the Table below for GHG emission 

calculations in 02/11/2014 submittal. Please let me know if you have any questions or I could be of help. 

Thanks.

Rahul 

.............................................................................................

Rahul Pendse

Manager of Consulting Services

Trinity Consultants – Baton Rouge

301 Main Street, Suite 900 | Baton Rouge, Louisiana 70825

Office: 225-346-4003 | Mobile: 714-454-0518

Email: rpendse@trinityconsultants.com

.............................................................................................

From: Land, Eva [mailto:Land.Eva@epa.gov] 

Sent: Thursday, November 13, 2014 1:03 PM

To: Rahul Pendse

Subject: RE: Anadarko BlackHawk/BlackHornet PSD-Title V Application Revised GHG Emissions 

Rahul,

I want to double check that the GHG GWP that you used in your 2/11/14 emission calculations are the 

following:

GHG Pollutant GWP Factor

CO2 1

CH4 25

N2O 298

SF6 22,800

Let me know if you used a different set of GWP. 

Eva
From: Rahul Pendse [mailto:RPendse@trinityconsultants.com] 

Sent: Tuesday, February 11, 2014 1:15 PM

To: Land, Eva

Cc: Carlson, Sara; Kathryn Maness (Kathryn.Maness@anadarko.com)

Subject: Anadarko BlackHawk/BlackHornet PSD-Title V Application Revised GHG Emissions 

Hello Eva,

Per our phone discussion, please find the revised Greenhouse Gas (GHG) emission calculations for 

Anadarko’s BlackHawk and BlackHornet PSD-Title V Application. The revisions reflect the revised Global 

Warming Potentials per EPA’s “Final Rule: 2013 Revisions to the Greenhouse Gas Reporting Rule and 

Confidentiality Determinations for New or Substantially Revised Data Elements”, which became 

effective on January 1, 2014. As discussed, attached are:

 Revised GHG emissions summary page including GHG emissions from each equipment for all 

operating scenarios

 Revised PTE table reflecting revised GHG emissions

While preparing the attached deliverable, Trinity found an error (i.e., wrong cell reference) in lbs/unit 

GHG emission factor calculation for a flowback boiler (DR-TP-22). The error was corrected in the 

attached submittals. Let me know if you have any questions or need clarification. Thanks for your help!

................................................................................................................

Rahul Pendse

Managing Consultant

Trinity Consultants – Baton Rouge

301 Main Street, Suite 900 | Baton Rouge, Louisiana 70825

Office: 225-346-4003 | Mobile: 714-454-0518

Email: rpendse@trinityconsultants.com

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