2700-PM-AQ0202
Conditions
Rev. 2/2002
COMMONWEALTH OF PENNSYLVANIA
DEPARTMENT OF ENVIRONMENTAL PROTECTION
BUREAU OF AIR QUALITY
GENERAL PLAN APPROVAL AND GENERAL OPERATING PERMIT
BAQ-GPA/GP – 2
STORAGE TANKS FOR VOLATILE ORGANIC LIQUIDS
GENERAL CONDITIONS
1.
Statutory Authority and General Description
In accordance with Section 6.1(f) of the Air Pollution Control Act, 35 P.S. §4006.1, and 25 Pa.
Code §§127.514 and 127.622, the Department of Environmental Protection (Department) hereby
issues this general plan approval and general operating permit for storage tanks for volatile
organic liquids (hereinafter referred to as “Storage Tank General Permit”).
2.
Applicability/Source Coverage Limitations
Approval herein granted to construct and operate under this Storage Tank General Permit is
limited to stationary storage tanks with a rated capacity of 2,000 gallons or greater which store
volatile organic liquids as defined in 40 CFR §60.111b with a storage vapor pressure of 11.1 psia
or less.
This Storage Tank General Permit authorizes the construction, modification, or reconstruction of
storage tanks with a rated capacity of 2,000 gallons or greater that meet the best available
technology requirements of §§127.1 and 127.12(a)(5).
The emission limitations and requirements that a storage tank is subject to are dependent on the
date the tank was constructed, reconstructed or last modified. The dates of July 23, 1984, and
May 18, 1978, are important dates regarding the applicability of Federal New Source
Performance Standards found in 40 CFR Part 60, Subparts Ka and Kb. Rated capacities of
approximately 10,000, 20,000 and 40,000 gallons are applicability levels for differing
requirements.
The Storage Tank General Permit also covers tanks regulated under the provisions of the
National Emission Standards for Hazardous Air Pollutants for Source Categories established
pursuant to Section 112 of the Federal Clean Air Act as promulgated under 40 CFR Part 63,
Subparts F, G, R and CC. These Subparts are for the synthetic organic chemical manufacturing
industry, petroleum refineries and gasoline distribution facilities.
3.
Application for Use
Any person proposing to operate a storage tank under this Storage Tank General Permit shall
notify the Department using the Storage Tank General Permit Application provided by the
Department and shall receive prior written approval from the Department as required under 25
Pa. Code §127.621 (relating to application for use of general plan approvals and general
operating permits).
4.
Compliance
Any storage tank operating under this Storage Tank General Permit must comply with the terms
and conditions of the general permit. The storage tank and any associated air cleaning devices
shall be:
a.
operated in such a manner as not to cause air pollution.
-1-
2700-PM-AQ0202
Conditions
5.
Rev. 2/2002
b.
operated and maintained in a manner consistent with good operating and maintenance
practices.
c.
operated and maintained in accordance with the manufacturer's specifications and the
applicable terms and conditions of this Storage Tank General Permit.
Permit Modification, Suspension and Revocation
This Storage Tank General Permit may be modified, suspended, or revoked if the Department
determines that affected storage tank(s) cannot be regulated under this general permit, or the
permittee fails to comply with applicable terms and conditions of the Storage Tank General
Permit.
The approval herein granted to operate storage tanks shall be suspended, if, at any time, the
permittee causes, permits or allows any modification (as defined in 25 Pa. Code §121.1) of the
storage tank and any associated air pollution control device that is not in accordance with this
general permit. Upon suspension of the general permit, the permittee may not continue to
operate or use said storage tanks. If warranted, the Department will require that the storage tank
be permitted under the state operating permit or Title V operating permit requirements in 25 Pa.
Code Chapter 127, if applicable.
6.
Notice Requirements
The permittee shall comply with applicable notification requirements established in 25 Pa. Code
Chapter 127, Subchapter H (relating to general plan approvals and operating permits). Any
notification submitted to the Department shall be sent to the appropriate Regional Office
responsible for issuing general permits in the county in which the storage tank is located.
The permittee shall immediately notify the Department of any malfunction of any storage tank
which results in, or may possibly be resulting in, the emission of air contaminants in excess of the
limitations specified in, or established pursuant to, any applicable rule or regulation contained in
25 Pa. Code, Subpart C, Article III (relating to air resources).
7.
Testing
For any storage tank constructed, reconstructed or modified after May 18, 1978, which uses an
external floating roof, the permittee shall conduct testing of the seals in accordance with 40 CFR
§60.113a. Tests shall be conducted on the primary seals within 60 days of initial tank filling and
every 5 years thereafter. Tests on the secondary seals shall be conducted annually. The
Department and the EPA administrator shall be notified of the testing.
If, at any time, the Department has cause to believe that air contaminant emissions from the
source covered by this general plan approval and operating permit may be in excess of the
limitations specified in, or established pursuant to, any applicable rule or regulation contained in
Article III of the Rules and Regulations of the Department of Environmental Protection, the
permittee shall be required to conduct whatever tests are deemed necessary by the Department
to determine the actual emission rate(s). Such testing shall be conducted in accordance with the
provisions of Chapter 139 of the Rules and Regulations of the Department of Environmental
Protection, where applicable, and in accordance with any restrictions or limitations established by
the Department at such times as it notifies the permittee that testing is required.
The Department shall be notified at least 30 days in advance of any testing required under this
permit. The EPA Administrator shall be notified at least 30 days in advance of any tests for tanks
regulated under the Federal New Source Performance Standards, 40 CFR Part 60, Subpart Ka.
-2-
2700-PM-AQ0202
Conditions
8.
Rev. 2/2002
Monitoring
For all storage tanks with floating roofs, the permittee shall annually inspect the roof for
compliance with the following:
9.
a.
There shall be no visible holes, tears or other openings in the seals or seal fabric.
b.
All openings, except stub or emergency drains, shall be covered and sealed except when
in use.
c.
All automatic bleeder or rim vents shall remain closed except when the roof is floated
onto or off its leg supports.
d.
All emergency drains on external floating roofs shall be provided with a slotted
membrane fabric which covers at least 90 percent of the area opening.
e.
All external floating roofs shall be visually inspected annually for secondary seal gap.
f.
The secondary seal gap of external floating roof tanks equipped with a vapor mounted
primary seal shall be measured annually.
Recordkeeping
For all storage tanks with floating roofs, the permittee shall keep a record of the following:
a.
the types of volatile organic liquids stored in the tank,
b.
the maximum true vapor pressure of the liquids stored, and;
c.
the results of all inspections required under Condition 8.
The permittee shall keep the records required under Condition 8 for a period of 2 years and shall
make those records available to the Department upon request.
10.
Reporting
40 CFR Section 60.4 requires submission of copies of all requests, reports, applications,
submittals and other communications to both the EPA and the Department. The EPA submittals
shall be forwarded to:
Director
Air Toxics and Radiation Division
US EPA Region III
841 Chestnut Street
Philadelphia PA 19107
Any notification required as a result of any condition contained herein should be directed to the
regional office of the Department of Environmental Protection responsible for the county where
the storage tank(s) covered by this Storage Tank General Permit is located.
The permittee shall immediately notify the Department of any malfunction of the source or any
associated air cleaning device(s) which result in, or may possibly be resulting in, the emission of
air contaminants in excess of the limitations specified in, or established pursuant to, any
applicable rule or regulation contained in Article III of the Rules and Regulations of the
Department of Environmental Protection.
-3-
2700-PM-AQ0202
Conditions
Rev. 2/2002
The permittee shall notify the Department and EPA, as appropriate, of changes in the products
stored in a tank and describe how the change affects applicable requirements and how those
applicable requirements are being met. In accordance with 25 Pa. Code §127.14(c), this notice
shall be provided 7 days prior to a change that involves no equipment changes or 15 days prior
to a change that involves equipment changes.
11.
General Permits at Title V Facilities
Any storage tank located at a "Title V facility" as defined in 25 Pa. Code §121.1, shall comply with
the requirements of 25 Pa. Code §127.514 (relating to general operating permits at Title V
facilities).
12.
Permit Shield
Unless precluded by the Clean Air Act or regulations promulgated thereunder, the permit shield
provision contained in 25 Pa. Code §127.516 (relating to permit shield) shall apply to storage
tanks operating under this Storage Tank General Permit.
13.
Term of Permit
This Storage Tank General Permit is valid for a fixed term of five years from the date of issuance
to the applicant.
14.
Permit and Administrative Fees
The Storage Tank General Permit establishes the following application and permit renewal fees:
15.
a.
Two hundred fifty dollars during the 1995-1999 calendar years.
b.
Three hundred dollars during the 2000-2004 calendar years.
c.
Three hundred seventy-five dollars beginning in the 2005 calendar year.
Expiration and Renewal of Permit
The permittee's right to operate under this Storage Tank General Permit terminates five years
following the date approval is granted for use of this permit unless a timely and complete renewal
application is submitted to the Department 30 days prior to the permit termination date.
Upon receipt of a complete and timely application for renewal, storage tanks may continue to
operate subject to final action by the Department on the renewal application. This protection
shall cease to exist if, subsequent to a completeness determination, the applicant fails to submit
any additional information required by the Department to process the renewal application by the
deadline specified in writing by the Department.
Application for renewal of the Storage Tank General Permit shall be made on the same forms
described in Condition 3, and include the appropriate renewal fee listed in Condition 14.
16.
Applicable Laws
Nothing in this Storage Tank General Permit relieves the permittee from its obligation to comply
with all applicable Federal, state and local laws and regulations. This Storage Tank General
Permit does not prohibit changes in the products stored in a particular tank provided that the tank
meets all applicable requirements for the storage of the alternate product and the change is
reported in accordance with the last paragraph of condition 10.
-4-
2700-PM-AQ0202
Conditions
17.
Rev. 2/2002
Prohibited Use
Any stationary air contamination source that is subject to the requirements of 25 Pa. Code
Chapter 127, Subchapter D (relating to prevention of significant deterioration) and 25 Pa. Code
Chapter 127, Subchapter E (relating to new source review) may not operate under this Storage
Tank General Permit.
18.
Transfer of Ownership or Operation
The permittee may not transfer the Storage Tank General Permit except as provided in 25 Pa.
Code §127.464 (relating to transfer of operating permits).
19.
Regulatory Conflicts
Wherever a conflict occurs between this general plan approval and operating permit and any of
the regulations listed below, the permittee shall, in all cases, meet the more stringent
requirement:
a.
25 Pa. Code §§129.56 and 129.57
b.
40 CFR Part 60, Subparts K, Ka and Kb
c.
40 CFR Part 63, Subparts F, G and CC
SPECIAL CONDITIONS
20.
Plan Approval Conditions for Storage Tanks Constructed, Reconstructed or Last
Modified After March 30, 1996
This Storage Tank General Permit shall authorize the construction of qualifying volatile organic
liquid storage tanks.
21.
Construction Requirements for Tanks with Capacities Equal to or Less than
40,000 Gallons and Constructed, Reconstructed or Last Modified Prior to July 23,
1984
Tanks which store volatile organic liquids as defined in 40 CFR §60.111b with a storage vapor
pressure of 1.5 psia or greater shall be constructed with a relief valve set to release at no less
than 0.7 psig of pressure or 0.3 psig of vacuum.
22.
Construction Requirements for Tanks with Capacities Greater than 75 Cubic
Meters (19,812 Gallons) and Equal to or Less than 151 Cubic Meters (39,889
Gallons) and Constructed, Reconstructed or Last Modified On or After July 23,
1984
These storage tanks which store organic liquids at vapor pressures greater than 4 psia and lower
than 11.1 psia shall be constructed with one of the following control systems which meet the
requirements of 40 CFR §60.112b:
a.
A fixed roof with an internal floating roof with a liquid seal, mechanical seal or a double
set of seals.
b.
An external floating roof equipped with a double set of seals. The primary seal shall be
either a mechanical seal or a liquid mounted seal.
-5-
2700-PM-AQ0202
Conditions
Rev. 2/2002
c.
23.
A closed vent with a control device, which has received prior approval by the
Department, capable of reducing volatile organic compound (VOC) emissions by 95
percent or more.
Construction Requirements for Tanks with Capacities Equal to or Greater than
40,000 Gallons and Constructed, Reconstructed or Last Modified Prior to July 23,
1984
These storage tanks which store organic liquids at vapor pressures greater than 1.5 psia and
lower than 11.1 psia, shall include one of the following control systems which meet the
requirements of 25 Pa. Code §129.56:
24.
a.
A fixed roof with an internal floating roof equipped with a primary seal.
b.
An external floating roof with a double set of seals.
c.
A closed vent system with a control device, which has received prior approval by the
Department, capable of reducing volatile organic compound (VOC) emissions by 80
percent or more.
Construction Requirements for Tanks with Capacities Equal to or Greater than
40,000 Gallons Storing Petroleum Liquids and Constructed, Reconstructed or Last
Modified After May 18, 1978, and Prior to July 23, 1984
These storage tanks which store organic liquids at vapor pressures greater than 1.5 psia and
lower than 11.1 psia, shall include one of the following control systems which meet the
requirements of 40 CFR §60.112a:
25.
a.
A fixed roof with an internal floating roof.
b.
An external floating roof.
c.
A closed vent system with a control device, which has received prior approval by the
Department, capable of reducing volatile organic compound (VOC) emissions by 95
percent or more.
Construction Requirements for Tanks with Capacities Equal to or Greater than 151
Cubic Meters (39,889 Gallons) and Constructed, Reconstructed or Last Modified
On or After July 23, 1984
These storage tanks which store organic liquids at vapor pressures greater than 0.75 psia and
lower than 11.1 psia, shall include one of the following control systems which meet the
requirements of 40 CFR §60.112b:
a.
A fixed roof with an internal floating roof equipped with a liquid seal, a mechanical seal or
a double set of seals.
b.
An external floating roof equipped with a double set of seals. The primary seal shall be
either a mechanical seal or a liquid mounted seal.
c.
A closed vent system with a control device, which has received prior approval by the
Department, capable of reducing volatile organic compound (VOC) emissions by 95
percent or more.
-6-
2700-PM-AQ0202
Conditions
26.
Rev. 2/2002
Operating Requirements for Tanks with Capacities Greater than 40 Cubic Meters
(10,556 Gallons) Which Were Constructed, Reconstructed or Last Modified On or
After July 23, 1984
The storage tank shall also operate in accordance with the following conditions:
27.
a.
The storage tank is subject to the emission limitations of the New Source Performance
Standard, 40 CFR Part 60, Subpart Kb.
b.
The storage tank shall be tested in conformance with the requirements of 40 CFR
§60.113b.
c.
The storage tank owner or operator shall keep records of tank usage, descriptions,
certifications, tests, inspections and repairs in conformance with 40 CFR §60.115b.
d.
The storage tank owner or operator shall monitor storage tank operations in conformance
with 40 CFR §60.116b.
e.
In accordance with Condition 10, all reports and notifications required under 40 CFR
§§60.113b(a)(5); 60.113b(b)(5); 60.113b(c)(1); 60.115b(a)(3); 60.115(b)(1), (2) & (4);
60.115b(d)(1) & (3); and 60.116b(d) shall be provided to the Department and to the EPA.
National Emission Standards for Hazardous Air Pollutants
This condition applies to any storage tank located in a facility regulated by 40 CFR Part 63
Subparts F and G [relating to Maximum Achievable Control Technology standards for the
synthetic organic chemical manufacturing industry (SOCMI)].
a.
b.
c.
Existing tanks, as described in the following, shall comply with the provisions of 40 CFR
Part 63, Subparts F and G by April 22, 1997:
i.
Tanks with a capacity of 75 cubic meters (19,812 gallons) and less than 151
cubic meters (39,889 gallons) storing organic hazardous air pollutants with vapor
pressures of less than 11.1 psia (76.6 kPa) and equal to or larger than 1.9 psia
(13.1 kPa).
ii.
Tanks with a capacity of 151 cubic meters (39,889 gallons) or greater storing
organic hazardous air pollutants with vapor pressures of less than 11.1 psia
(76.6 kPa) and equal to or larger than 0.75 psia (5.2 kPa).
New tanks, as described in the following, shall comply with the provisions of 40 CFR Part
63, Subparts F and G upon construction:
i.
Tanks with a capacity of 38 cubic meters (10,038 gallons) and less than 151
cubic meters (39,889 gallons) storing organic hazardous air pollutants with vapor
pressures of less than 11.1 psia (76.6 kPa) and equal to or larger than 1.9 psia
(13.1 kPa).
ii.
Tanks with a capacity of 151 cubic meters (39,889 gallons) or greater storing
organic hazardous air pollutants with vapor pressures of less than 11.1 psia
(76.6 kPa) and equal to or larger than 0.1 psia (0.7 kPa).
This general plan approval and operating permit shall not be used for any tank which is
larger or has as higher vapor pressure than those listed in Conditions 26 a. and b.
-7-
2700-PM-AQ0202
Conditions
28.
Rev. 2/2002
d.
Fixed roof tanks shall use an internal floating roof with a liquid seal, mechanical seal or a
double set of seals in conformance with 40 CFR §63.119. If a vapor mounted seal is in
place as of December 31, 1992, the tank shall be equipped with either a liquid seal,
mechanical seal or a double set of seals the next time the tank is emptied or degassed
but in no event later than April 22, 2004.
e
External floating roof tanks shall be equipped with a double set of seals in conformance
with 40 CFR §63.119. The primary seal shall be either a mechanical seal or a liquid
mounted seal. Any existing tank shall be equipped with the previously described seals
the next time the tank is emptied or degassed but in no event later than April 22, 2004.
f.
Any tank may use a closed vent with a control device which has received prior approval
by the Department and is capable of reducing volatile organic compound (VOC)
emissions by 95 percent or more and conforms to the requirements of 40 CFR §63.119.
g.
Inspection, reporting and recordkeeping shall be done in conformance with 40 CFR Part
63, Subpart G.
National Emission Standards for Hazardous Air Pollutants
This condition applies to any storage tank located in a facility regulated by 40 CFR Part 63
Subparts G and CC (relating to Maximum Achievable Control Technology standards for
petroleum refineries).
a.
b.
c.
Existing tanks, as described below, shall comply with the provisions of 40 CFR Part 63,
Subparts CC and G by August 18, 2005:
i.
Tanks with a capacity of 75 cubic meters (19,812 gallons) and less than 151
cubic meters (39,889 gallons) storing organic hazardous air pollutants with vapor
pressures of less than 11.1 psia (76.6 kPa) and equal to or larger than 1.9 psia
(13.1 kPa).
ii.
Tanks with a capacity of 151 cubic meters (39,889 gallons) or greater storing
organic hazardous air pollutants with vapor pressures of less than 11.1 psia
(76.6 kPa) and equal to or larger than 0.75 psia (5.2 kPa).
New tanks or tank modified after July 14, 1994, shall comply with the provisions of 40
CFR Part 63, Subparts F and G upon construction. Furthermore, new tanks, as
described in the following are subject to Subparts G and CC:
i.
Tanks with a capacity of 38 cubic meters (10,038 gallons) and less than 151
cubic meters (39,889 gallons) storing organic hazardous air pollutants with vapor
pressures of less than 11.1 psia (76.6 kPa) and equal to or larger than 1.9 psia
(13.1 kPa).
ii.
Tanks with a capacity of 151 cubic meters (39,889 gallons) or greater storing
organic hazardous air pollutants with vapor pressures of less than 11.1 psia
(76.6 kPa) and equal to or larger than 0.1 psia (0.7 kPa).
This Storage Tank General Permit shall not be used for any tank which is larger or has a
higher vapor pressure than those listed in Conditions 27 a. and b.
-8-
2700-PM-AQ0202
Conditions
29.
Rev. 2/2002
d.
Fixed roof tanks shall use an internal floating roof with a liquid seal, mechanical seal or a
double set of seals in conformance with 40 CFR §§63.119 and 63.646. If a vapor
mounted seal is in place as of July 15, 1994, the tank shall be equipped with either a
liquid seal, mechanical seal or a double set of seals the next time the tank is emptied or
degassed but in no event later than August 18, 2005.
e.
External floating roof tanks shall be equipped with a double set of seals in conformance
with 40 CFR §§63.119 and 63.646. The primary seal shall be either a mechanical seal or
a liquid mounted seal. Any existing tank shall be equipped with the previously described
seals the next time the tank is emptied or degassed but in no event later than August 18,
2005.
f.
Any tank may use a closed vent with a control device which has received prior approval
by the Department and is capable of reducing volatile organic compound (VOC)
emissions by 95 percent or more and conforms to the requirements of 40 CFR §§63.119
and 63.646.
g.
Inspection, reporting and recordkeeping shall be done in conformance with 40 CFR
Part 63, Subpart CC.
National Emission Standards for Hazardous Air Pollutants
This condition applies to any storage tank located in a facility regulated by 40 CFR Part 63
Subpart R (relating to Maximum Achievable Control Technology standards for gasoline
distribution).
a.
b.
Existing tanks larger or equal to 75 cubic meters (19,812 gallons) as described below,
shall comply with the provisions of 40 CFR Part 63, Subpart R by December 15, 1997:
i.
Fixed roof tanks with floating internal roof shall be fitted with either, liquid filled
seal, double seals or, a mechanical shoe seal.
ii.
Tanks with external floating roof shall be fitted with primary (mechanical or liquid)
and secondary seal.
iii.
All tanks will be fitted with a closed vent system and control device to reduce inlet
VOC emission by 95% or greater.
iv.
Tanks may be allowed to be fitted with alternative means of emission limitation, if
judged by the Administrator to achieve equivalent reduction as achieved by i, ii,
and iii.
v.
Tanks with noncontact external floating roofs shall cover and seal openings in
accordance with the requirements in 40 CFR §60.112b(a)(2)(ii).
New tanks larger or equal to 75 cubic meters (19,812 gallons) as described in a. above,
shall comply with the provisions of 40 CFR Part 63, Subpart R upon startup.
Originally Signed by:
Approved by:
July 8, 1996
Joyce E. Epps
Director
Bureau of Air Quality
Date Approved
-9-