DAQ-2024-011154

DEPARTMENT OFTHE AIR FORCE
75TH CIVIL ENGINEER GROUP (AFMC)
HILL AIR FORCE BASE UTAH
30 October 2023
Amanda Burton
Chief, Environmental Branch
75 CEG/CEIE
7290 Weiner Street
Hill Air Force Base Utah 84056-5003
Director
Utah Division of Air Quality
Attention: Compliance
P.O. Box 144820
Salt Lake city utah 84114-4820
Dear Director
UTAH DEPARTMENT OF
ENVIRONMENTAL OUAUTY
^ i :' .a,J Lr ,,:-
\ e\ rfired1\a" dDIVISION OF AIR QUALITY
Hill Air Force Base is submitting this notification, pursuant to Conditions II.B.52.d existing
affected boilers and II.B.53.d new affected boilers of the Main Base Title V Operating Permit (TVOP)
I 100007004, which states "the permittee shall submit a notification of alternative fuel use within 48 hours
of the declaration of each period of natural gas curtailment or supply interruption. [Origin: 40 CFR 63
Subpart DDDDDI [40 CFR 63.7545(f)]
On the morning of 28 Octob er 2023 starting at 8:25 am a defective valve resulted in a supply
intemrption and firing of four boilers (AQUIS 3501,3502,3506, and 3507) on DS2 Diesel FuelGrade 2-
D. The valve was fixed on the same day and firing on natural gas resumed at noon.
The alternative fuel, DS2 Diesel Fuel Grade 2-D, complies with the specifications under the
definition of distillate oil in 40 CFR 60.41c and is Defense Logistics Agency-Energy contracted fuel
compliant with MIL-STD-30048'DoD Standard Practice-Quality Assurance Surveillance for Fuels,
Lubricants and Related Products' for National Stock Number 9140-01-524-0139.
If you have any questions or would like to discuss this issue further, my point of contact is Dr.
Erik Dettenmaier 75 CEG/CEIEA, at [phone] or [e-mail].
Sincerely
10/30/2023
X n.unoa Burton
Siq n ed bv BU RTO N.AMANDA.CH RISTI NE. 1 27 0023068
AMANDA BURTON, NH.III, DAF
Chiel Environmental Branch
REVIEWEDInitials:Date: Sept 13, 2024 Compliance Status:OK File#: 11284 (B2)