### RE: Additional Info Needed for MCU AAQIR Additional Info Needed for MCU AAQIR Dwight Mallory Dwight Mallory to: Andrew Chew 10/30/2012 01:31 PM Cc: Shaheerah Kelly, Patrick Flynn



### Andrew,

I wanted to acknowledge receipt of your email and let you know it should be no problem to get you the requested information by the end
of November.

In reference to the modeled impacts for Hovenweep; we were unable to “screen out” using VISCREEN and the Level-I visibility analysis so I asked McVehil Monnett and Associates to complete a Level-II visibility analysis using AERMOD and coordinate with Mr. Shepherd. I spoke with Tom Hormel at McVehil about a week ago and he said he ran into some issues getting the hourly P-G stability class information necessary for the Level-II analysis, but that he expects to have the analysis done early
this week.

I’ll send you the requested data and screening analysis and I’ll copy Shaheerah on everything I send. Please let me know if you need anything else in the meantime.

Dwight E. Mallory Environmental, Health & Safety Coordinator Resolute Energy Corporation 1675 Broadway, Suite 1950 Denver, CO 80202 Direct: 303-573-4886 X 1165 Cell: 970-302-8620 Email: dmallory@ResoluteEnergy.com

From: Chew.Andrew@epamail.epa.gov [ mailto:Chew.Andrew@epamail.epa.gov] Sent: Tuesday , October 30, 2012 10:32 AM
To : Dwight Mallory Cc: Kelly.Shaheerah@epamail.epa.gov Subject: Fw: Additional Info Needed for MCU AAQIR

Hi Dwight,

Shaheerah is peer-reviewing my write-up for the dra ft flare permit and we need the following information available when we ar e ready to public notice the permit. Hope it works for you if we can get the information from you within a month's timeframe. Also, can you let me know how things are going with the modeled impacts for Hoven weep that Don Shepherd at the National Park Service asked for? T hanks again for your help.- Andrew

------------------------------------------- Andrew Chew, P.E. T: (415) 947-4197 | F: (415) 947-3579 | chew.andrew@epa.gov U.S. EPA, Region 9, Air Permits Office (AIR-3) | 75 Hawthorne St., San Francisco, CA 94105

----- Forwarded by Andrew Chew/R9/USEPA/US on 10/30 /2012 09:23 AM -----

From: Shaheerah Kelly/R9/USEPA/US

To: Andrew Chew

/R9/USEPA/US@EPA

Date: 10/29/2012 12:14 PM
Subject: Additional Info Needed for MCU AAQIR

Hi Andrew,

Here is the additional info that is needed to fill in some of the gaps for the MCU AAQIR PSD permit amendment. It would be very he lpful if you could get this info from Resolute and find out if t he company can provide
this info within the next month or so. Thanks.

1) Provide facility- wide actual emissions and PTE estimates for SO 2, CO, NOX, VOC , PM, PM10. and PM2.5. Section 3 of the 2008 PSD application provides emissions info for the Main Fl are only.

2) Provide actual emissions and PTE estimates for S O2, CO, NOX, VOC , PM, PM10. and PM2.5 for the following emission un its. Section 3 of the 2008 PSD application provides emissions info for the Main Flare only. TEG Reboiler (0.33 MMBtu/hr) - Operational  Main Flare (618,104 scf/hr) - Operational  Gasoline Storage Tank (1000 gallons) - Operational  Glycol Heater (rated size/capacity?) - Operational 

3) Verify the accuracy of the rated sizes /capacities of the following emission units, and provide the rated sizes/capaci ties where none is
identified. TEG Reboiler (0.33 MMBtu/hr) - Operational  Main Flare (618,104 scf/hr) - Operational  Gasoline Storage Tank (1000 gallons) - Operational  Glycol Heater (rated size/capacity?) - Operational 

4) Verify the accuracy of the following information re garding the operational status of (i) the emissions units liste d in the current PSD permit and (ii) the other operations at the MCU fac ility.

Equipment in current MCU Facility PSD Permit lasted amended in 1991:T4500 Gas Turbine (4390 HP) - Shutdown 1997  Waste Heat Recovery Unit (11 MMBtu/hr) - Shutdown 1 997  Ingersoll Rand IC Engine (491 HP) - Shutdown 1993  Fairbanks Morse IC Engine (1712 HP) - Shutdown 1997  Fairbanks Morse IC Engine (1712 HP) - Shutdown 1997  Fairbanks Morse IC Engine (1848 HP) - Shutdown 1997  Fairbanks Morse IC Engine (1848 HP) - Shutdown 1997  DPC-540 IC Engine (470 HP) - Shutdown 1998  HC Liquid Reboiler (1 MMBtu/hr) - Shutdown 1993  Heat Medium Heater (4 MMBtu/hr) - Shutdown 1993  Heat Medium Heater (12.2 MMBtu/hr) -Shutdown 1991  TEG Reboiler (0.33 MMBtu/hr) - Operational  TEG Reboiler (0.33 MMBtu/hr) - Shutdown 1991  TEG Reboiler (0.33 MMBtu/hr) - Shutdown 1991  TEG Reboiler (0.1 MMBtu/hr) - Shutdown 1991  Other Operations at the MCU Facility: Natural Gas Liquids Processing - Shutdown 1998  Natural Gas Processing Facility - Shutdown 1998  Main Flare (618,104 scf/hr) - Operational  Gasoline Storage Tank - Shutdown 1993  Gasoline Storage Tank - Shutdown 1993  Gasoline Storage Tank (1000 gallons) - Operational  Diesel Storage Tank - Shutdown 1993 
CO2 line heater - Shutdown 2004  Glycol Heater - Operational 

5) EPA was provided the attached description of the MCU facility by Mobil in the past. Please verify the accuracy of th is information and clarify whether it is acceptable to use this descri ption as part of the PSD application

[attachment "MCU Summary.pdf" deleted by Andrew Chew/R9/USEPA/US]

************************************ Shaheerah Kelly, Environmental Engineer U.S. Environmental Protection Agency, Region 9 Permits Office, Air Division San Francisco, CA 94105 Phone: 415-947-4156 Fax: 415-947-3579 Email: kelly.shaheerah@epa.gov