### RE: BHPB

- 

### SakeAir PermitApplication

- 

### Scheduled Meeting 1/25112 Kelly Fortin to: Wilson, Susan 01/18/2012 12:47 PM Cc: Andrew Porter, Art Hofmeister, Bill BruscinoSusanThanks forthe update. We understand thatyou would like to cancel the meeting previously scheduled for nextThursday. We’ll letfolks know in our group thatthe meeting is cancelled. In our review ofthe package thatwas submitted in December, we note that a few unit changes were made

- ofnote one emissions unitwas added to the application and several wireline diesel engines were removed from the BACT analysis. We have concerns regarding the exclusion ofthe wireline diesel engines

- the effect being thatthey seem to be treated more as supportvessels, ratherthan part ofthe 

### OCS source. Given thatthe OCS source definition includes “any equipment, activity, orfacility,” we do not believe these units should be excluded

- and assume you would rather us move forward with including BACT forthese units, ratherthan deeming some portion ofthe application incomplete. Andy and I spoke briefly with Bill Bruscino last Friday to find outwhy this change was made to the application atthis point. Bill explained thatthere was some difficultly getting requested information from the wireline supplier. I suggested thatwe may not be thatfaroffwith respectto getting this resolved

- and perhaps we could discuss in more detail the specific units ofconcern (i.e. the 1978 Detroitdiesels), ratherthan spending more time with further analysis on your end. We would also like more info on the flexibility you have in the use ofspecific wireline units. Ifthe wireline supplierwith be changing outtheir inventory, I would like to build thatflexibility into the permit, ratherthan running into the situation where a change-out ofa wireline unitwould trigger a permit modification. We discussed with Bill the possibility ofhaving a call to discuss the wireline units this week. However, I didn’trealize thatArt is out ofthe office forthe rest ofthe week. Given that he has written the BACT section ofthe permit, I would like to have him on the call when we discuss the wireline approach. Please let me know ofsome times you would have available nextweekto discuss the wireline units. Ifyou would like to touch base with me before that, please feel free to give me a call. I can get backto you when I have a break in the training course we are taking this week.ThanksKelly



### Wilson, Susan” BHPBIWOnPeokm(GOMc3kePfäj From: ‘Wilson, Susan” <Susan.Wilson@bhpbilliton.com> To:. Kelly Fortin/R4/USEPA/US@EPA, Andrew Porter/R4/USEPAIUS@EPA, Art Hofmeister/R4/USEPAIUS@EPA Cc: ‘Wilson, Susan” <Susan.Wilson@bhpbilliton.com> Date: 01/17/2012 02:32 PM Subject: RE: BHPB

- Sake Air PermitApplication

- Scheduled Meeting 1/25/12 

### BHP Billion Petroleum (GOM) Inc Sake Prospect Drilling Prospect PSD/Title V major Source Permit Application Afternoon All,

### A meeting had been scheduled forJanuary 25, 201 2 for BHPB, Transocean and Trinity Consultants to present our responses from the teleconference call and email that occurred on November 10, 2012. As a reminder, there were 8 comments generated from our September 30, 201 1 submittal. BHPB submitted an addendum to the application on December21

, 

### 2012 that addressed 7 ofthe 8 comments. The following sections ofthe Application were revised:

. Section 3 (Emission Calculations);

. Section 4 (Regulatory Applicability Analysis);

. Section 5 (BACT Analysis);

. Section 6 (Part 71 Forms);

. Appendix A (only C. ft Luigs and DDI emission calculations); and

. Appendix B (additional engine certifications). The remaining comment on the SINOx Control Technology will be submitted to EPA on January 19, 2012. BHPB believes it would be beneficial for EPA be given an opportunity to review the data and either ask for additional information at which time it can be determined whether a meeting would be the preferred venue. Therefore, BHPB requests to cancel the meeting on January 25, 2012. Thankyou foryour consideration with this matter and your assistance and guidance throughout the permit process. 

## Susan Wilson Senior Regulatory Specialist BHP Billiton Petroleum 1360 Post Oak Boulevard, Suite 150 Houston, Texas 77056-3030 USA Mail to Susan.Wilsoncbhpbilliton.com Internet http:llwww.bhDbilliton.com Phone +1 713-599.6349 Cell +1 832-526-3298 Fax +1 713-499-5535
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