- 5.::::: ~.,~. MaTneS::m. Gove~no~. STaTe 0; l..':ar, Social Services Amno'1y W. Mitcneli. Ph.D.• ::xecutive Dire::o~

533-6108 

July 12,1979 

Alfred J. Nowoweijski
 

Deputy Civil Engineer
 

Civil Engineering Division
 

Department of the Air Force
 

Headquarters 2849th Air Base Grotip (AFLC)
 

Hill Air Force Base, ~tah 84406
 

Re:	 Air Quality Approval Order 

for Remodeling Base Exchange 

SX Service Station 

Dear Mr. Nowoweijski: 

The thi rty-day comment peri od ended 0 n Jul y 7, 1979 and no
 

comments were received. Installation of the three new 10,000 gallon
 

underground storage tanks which are to be equipped with submerged-fill
 

equipment and a vapor return line is approved under the following
 

conditions:
 

1. The proposed installation be as described in the May 15, 

'1979	 Notice of Intent to Construct and as approved by 

the Executive Secretary. . 

2.	 The equipment be maintained and operated according to 

accepted operational and engineering practices. 

Because we must both schedule and perform an initial compliance
 

inspection, please give us an estimate of the date when the new equipment
 

will be placed in service, followed by notice of the actual date.
 

Sincerely, 

Alvin E. Rickers 

Executive Director 

Utah Air Conservation Committee 

CAN: jo \\It\ 

cc:	 Weber-Morgan District Health Dept. 

Division of Health 150 

Lyman J. Olsen. M.D.• M.P.H. P.O. Box 25C 

DirecTor of Health 4.2.4-1035 

An EQual Opportunity Employer 
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DEPARTMENT OF THE ~1~rf~CE
 

HEADQUARTERS Z8pTrle.~S'k1G;J;CUP(AFLCI
 

HILL AIR ~R~ il-,,(SE. UTAH 840S6
 , 

~~'< }"t> \979 1 5 MAY 1979 AEPLYTO 

ATTN OF; 

DE	 (j., ,~e D'" 01 "~~ SUBJECT:	 Relocation of Service Station Pum'p"'Isla-f1ds-" -Hill Air Force Base - Notice 

of Intent to Construct 

TO, Utah Air Conservation Committee
 

ATTN: Al Rickers, Executive Secretary
 

Bureau of Air Quality
 

P.O. Box 2500
 

Salt Lake City. Utah 84110
 

1. In compliance with section 3.1 of the State Air Conservation Regulations, the attached "Notice of Intent to Construct" is submitted by Hill AFB, U.S. 

Air Force. 

2. If this office can provide additional information, please feel free to 

contact Keith Davis at 777-2065. 

1. Atch 

Notice of Intent to Construct 

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7l 'F1:C - 1:ifeline of the JCerospact Ueam 4.2.4-1039
 
NOTICE OF INTENT TO CONSTRUCT 

RELOCATION OF SERVICE STATION PUMP ISLANDS
 

HILL AIR FORCE BASE, UTAH
 

1.	 Project Description: 

a. The proposed action provides for the remodeling of the existing 

Base Exchange (BX) service station at Hill AFB within Davis County. The 

BX service station presently has 3 pump islands; two on the south side and 

one on the east side. The proposal is to relocate these islands, with new 

equipment, to the north side of the service station as shown in Figure 1. 

Also included in the project will be 18,000 SF of paving, three new 10,000 

gallon underground storage tanks, utilities and adjacent landscaping. The 

pump islands will be rem6ved and the existing underground storage tanks will 

be filled with sand. 

b. The relocation of the pumps is required to eliminate the existing 

hazardous traffic conditions and to replace antiquated equipment. The new 

pump islands will be adjacent to the existing service station to provide 

garage and gas pumping services at the same general location plus allow 

adequa te backup space for wa iti ng cars. Currently, duri ng heavy use hours, 

vehicles will back up restricting flow through the intersection adjacent to 

the service station. 

2.	 Pollutant Emissions: 

a.	 The primary source of air pollutants from the BX service station is - the emission of volatile organic compounds from the evaporation associated 

with gasoline transfer, storage and occasional spillage. In 1978,. the ax 

service station sold approximately 1,954,000 gallons of gasoline and it is 

assumed that each of the three 10,000 gallon underground storage tanks had 

an average stored quantity of 5,000 gallons. Utilizing emission factors 

found in sections 4.3 and 4.4 of the EPA publication AP-42, "Compilation of 

Air Pollutant Emission Factors", the hydrocarbon (HC) emissions for the 

existing service station are calculated as outlined below: 

Emission 

Opera t ion Factor 

1.	 Storage 0.25 lb/day 

Kgal 

Quantity 

2.	 Splash Loading of Underground 11.5lb/Kgal 1,954 22,471 

Tanks 

3. Unloading Delivery Trucks 2. 1 1b/ Kga 1 1,954 4,103 

4. Dispensing to Vehicles	 11.0 lb/Kgal 1,954 21 ,494 

5. Liquid Spillage Loss	 0.67 lb/Kgal 1,954 1,309 

TOTAL	 = 50,746 

= 25.4 tons/yr 

4.2.4-1040
 
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,...,.-. b. The proposed project will install new underground storage tanks 

which will have submerged fill equipment and a vapor return line such that 

vapors displaced during their filling will be returned to the delivery truck. 

In calculating the reduction in emissions this equipment will make, it is 

assumed that the commercial trucks delivering fuel will be equipped with a 

return vapor collection system. Again utilizing emission factors from 

AP-42, emissions for the altered BX service station are calculated as outlined below: 

Emission HC Emissions 

Operation Factor (Lb/Yr) 

1,205 

Kgal 

1. Storage	 0.22 lblday 

2.	 Submerged Loading with Open 0.80 1blKga 1 1,954 1 ,563 

Return Vapor System 

3. Unloading Delivery Trucks 2. 1 1bl Kga 1 1,954	 4.103 

4. Dispensing to Vehicles 11 .0 1bl Kga 1 1,954 21,494 

5. Liquid Spillage Loss 0.67 lb/Kgal 1,954	 1 ,309 

TOTAL	 = 29,674 

= 14.8 tons/yr 

c. As indicated in the preceeding paragraphs, under ideal situations, 

the proposed project will reduce HC emissions from the BX service station 

by about 10.6 tons per year. -There will also be some dust and heavy 

equipment exhaust created during the construction phase but these quantities 

will be small and created on a short-term basis only. 

3. Air Cleaning Devices: The three new gasoline tanks will have control 

equipment such that they will be submerged filled and have a vapor return 

line to return back to the delivery truck those vapors- displaced during 

filling. No additional air cleaning devices are proposed. 

4. Emission Point: All the HC emissions will be due to gasoline evaporation 

and are emitted at ground level from various locations around the pump 

islands and storage tanks. The nearest adjacent facility is a small branch 

exchange (quick-stop type store) located about 150 feet southwest of the 

pump islands. 

5.	 Sampling Points: No sampling points are anticipated. 

4.2.4-1042