APPENDIX B 

Regulations (related to CTG RACT, Major Source VOC RACT, and Major Source NOx RACT) 

from Vermont Air Pollution Control Regulations 

Submitted to replace the version of each of these rules 

currently federally approved in the Vermont SIP 

5-251(3) Control of Nitrogen Oxides Emissions : RACT for large stationary sources 

and 

5-253.3 Bulk Gasoline Plants 

Notes: 

For 5-251(3), there is no change in the wording of the existing SIP rule, only in the numbering of it. This 

rule currently is in the Vermont SIP as 5-251(2) . The numbering was changed when a new sub-section 5-

252(2) was adopted in Vermont regulation, but the new sub-section is not being submitted for inclusion in 

the SIP. 

For 5-253.3, the entire rule attached will replace the existing SIP rule with the same number. 
5-251 CONTROL OF NITROGEN OXIDES EMISSIONS 

(3) Reasonably available control technology for large stationary sources. 

(a) The owner or operator of any stationary source that has allowable 

emissions of one hundred (100) tons per year or more of nitrogen 

oxides shall install, maintain and use reasonably available control 

technology, approved by the Secretary, to limit the discharge of 

nitrogen oxides from the source by May 31, 1995 . 

(b) Any source that becomes or is currently subject to the provisions of 

this subsection by exceeding the applicability threshold in 

paragraph (3)(a) of this subsection shall remain subject to these 

provisions even if its emissions later fall below the applicability 

threshold. 

(c) Compliance schedules . The owner or operator of any source subject to 

this subsection shall submit a RA CT compliance plan approved by the 

Secretary, including a compliance schedule, to the Agency by 

November 15, 1993 . The compliance schedule shall assure final 

compliance with subsection (3)(a) as expeditiously as practicable, 

but no later than May 31, 1995. 

(d) Exemptions. Any NOx emission unit required to meet the most 

stringent emission rate (MSER) in a construction permit containing 

specific emission limits is exempt from the requirements of Section 

5-251(3). 
5-253.3 Bulk Gasoline Plants 

(a) Applicability. 

(1) This subsection shall apply to any bulk gasoline plant with an 

average daily throughput of 3,000 gallons or greater calculated on a 

calendar month basis . Once a bulk gasoline plant is subject to this 

subsection, it shall remain so, even if its throughput later falls 

below the applicability threshold. Any bulk gasoline plant with a 

throughput which is below the threshold shall comply with the 

requirements of paragraphs (b)(3)(vii), (viii), (ix) and (d)(1)(i) 

only. 

(2) This subsection shall also apply to any bulk gasoline plant, 

regardless of its gasoline throughput, for which construction or 

reconstruction is commenced after January 1, 2001 . 

(b) Standards. 

(1) The owner or operator of a bulk gasoline plant shall equip each 

gasoline storage tank with a submerged fill pipe and shall equip the 

bulk gasoline plant with a vapor balance system between the gasoline 

storage tank and the incoming gasoline tank truck. The lines shall 

be equipped with fittings that are vapor-tight and that 

automatically and immediately close upon disconnection. 

(2) The owner or operator of a bulk gasoline plant shall equip the 

plant's loading rack(s) for submerged fill and shall equip the bulk 

gasoline plant with a vapor balance system between the gasoline 

storage tank and the outgoing gasoline tank truck. The vapor balance 

system shall be designed to prevent any vapors collected at one 

loading rack from passing to another loading rack. The lines shall 

be equipped with fittings that are vapor-tight and that 

automatically and immediately close upon disconnection. 

(3) The owner or operator of a bulk gasoline plant required to maintain 

and operate a vapor balance system under this subsection shall 

ensure that the following procedures are complied with during 

gasoline loading and unloading operations and in the storage of 

gasoline : 

(i) The vapor balance system shall be connected between the 

gasoline tank truck and the storage tank during all transfer 

operations and the connection shall be vapor-tight; 

(ii) All storage tank openings, including inspection hatches and 

gauging and sampling devices, shall be vapor-tight when not in 

use; 

(iii) The gasoline tank truck compartment hatch covers shall remain 

closed during the transfer of gasoline; 

(iv) The vapor balance system shall be designed and operated at all 

times to prevent gauge pressure in the gasoline tank truck 

from exceeding 18 inches (450 millimeters [mm]) of water and 

B-3 
vacuum from exceeding 5 .9 inches (150 mm) of water during 

product transfer ; 

(v) No pressure vacuum relief valve in the bulk gasoline plant 

vapor balance system shall begin to open at a system pressure 

of less than 18 inches (450 mm) of water or at a vacuum of 

less than 5 .9 inches (150 mm) of water; 

(vi) All product transfers shall be limited to vapor-tight gasoline 

tank trucks or account trucks [for definition of account truck 

see '5-253 .5(b)] ; 

(vii) The filling of storage tanks shall be accomplished by 

submerged fill only; 

(viii)The loading of outgoing gasoline tank trucks and account 

trucks [for definition of account truck see '5-253 .5(b)] shall 

be accomplished by submerged fill only; and 

(ix) The owner or operator of the gasoline bulk plant or the 

gasoline tank truck shall observe the entire transfer 

operation and shall discontinue transfer if any liquid or 

vapor leaks are observed. 

(c) Inspection and monitoring requirements . 

(1) The bulk gasoline plant owner or operator shall inspect the vapor 

balance system and each loading rack every calendar month for liquid 

and vapor leaks during gasoline transfer operations. Detection 

methods using sight, sound, or smell are acceptable . Each leak 

detected shall be recorded and the source of the leak repaired 

within 15 calendar days after it is detected . 

(2) A pressure measurement device (liquid manometer, magnehelic gauge, 

or equivalent instrument) capable of measuring 20 in. of water gauge 

pressure within a + 0.5 inches of water precision, shall be 

calibrated and installed on the bulk gasoline plant vapor balance 

system at a pressure tap, located as close as possible to the 

connection with the gasoline tank truck, to allow determination of 

compliance with paragraph (b)(3)(iv) . 

(d) Record keeping. 

(1) The owner or operator of a bulk gasoline plant which is subject to 

this subsection shall maintain the following records for a minimum 

of three years: 

(i) Daily records showing the quantity of all gasoline transferred 

into gasoline tank trucks and account trucks [for definition 

of account truck see '5-253 .5(b)] . 

(ii) A record of each monthly leak inspection shall be kept on file 

at the plant. The inspection records shall include but are not 

limited to: 

(A) The date of inspection ; 

(B) Findings, including a description of leaks found, if 

any; 

(C) Leak determination method; 
(D) Corrective action taken, including the date each leak 

was repaired ; and 

(E) The inspector's name and signature. 

(2) All records required under this subsection shall be made available 

for inspection during normal business hours and copies shall be 

provided to the Air Pollution Control Officer upon request. 

(e) Compliance. All bulk gasoline plants subject to this subsection shall 

comply with this subsection by July 1, 1994 or by the commencement of 

plant operation, whichever occurs later. 
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