### April 12, 1999 Jeff Crawford UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 1 JOHN F. KENNEDY FEDERAL BUILDING BOSTON, MASSACHUSETIS 02203-0001



### Bureau of Air Quality Control Department of Environmental Protection State House, Station No. 17 

### Augusta, ME 04333 

### Dear Mr. Crawford: Previously, the Maine Department of Environmental Protection (DEP) proposed revisions to its Chapter 111 

### "Petroleum Liquid Storage Vapor Control 11 

### regulation and EPA provided comments to DEP in a letter dated August 14, 1998. 

### DEP subsequently conducted an additional 30 

### day public comment period on a revised draft of Chapter 111. 

### EPA reviewed that draft and informed DEP, in a letter dated January 22, 1999, 

### that we did not have any comments. DEP is currently conducting another 30 

### day public comment period on still another draft of Chapter 111. 

### EPA has reviewed the current draft rule and does not have any comments. If you have any questions on this issue, please contact Anne Arnold at (617) 918-1047. 

### Sincerely, 

# <;DJ 0 David B. Conroy, anager Air Quality Planning Unit

cc: Carolyn Wheeler, ME DEP

Internet Address (URL) • http://www.epagov Recycled/Recyclable • Printed with Vegetable 01 Based Inkson Recycled Paper (Minimum 25% Postconsumer)APR-07-1999 09=47 77826**~** 207 287 764

# DEP~MENT OF ENViRONMENTAL

# PROTE~ON P.02/05 06-096 Chapter 111: :f.ETROLEUMLIQUID STORAGEVAPORCONTROL



### 1. Scope SUMMARY: This regulation requires all owners of fixed roof storage tanks, storing gasoline, crude oil or 

### any petroleum liquid whose vapor pressure is greater than 1.52 psia (10.5 kilo pascals) to install floating roofs to reduce the hydrocarbon vapors lost to the atmosphere.

A. This regulation shall be apPiisable applies in all ambient air quality regions of the State of Maine. B. This regulation shall apply applies to all fixed roof storage vessels with capacities greater than 150,000 liters (39,000 gallons) containing volatile petroleum liquids whosetruevapor pressure is greater than 10.5 kilo pascals (1.52 psia) or a Reid vapor pressure of 4 psi. Such fixed roof storage vessels are subjectto New SourcePerformance Standards as ofthe dates specified in and in accordance with therequirements contained in 

### 40 CFR, Part

### 60, Subparts

### K, Ka, 

### and Kb. C. Section 5(8) ofthis regulation shall apply to all fixed roofstorage vessels with capadties greater than 150,000 liters (39,000 gallons) containing volatile petroleum liquids**whost~** true vapor pressure is greaterthan 

### 1.0 psiabut less than 

### 1.52 psia. 2. Prohibition. No owner or operator of a fixed roof storage vessel shall permit or**sufft~r** the usc of 

### such vessels unless: · A. The vessels have been retrofitted with an intemal floating roofequipped with a closure seal, or seals, to reduce the visual space between the roof edge and tank wall; or the vessels have been retrofitted with equally effective alternative control as approved by the Commissi•)ner and the United States EnvironmentalProtectionAgency; B. The vessel is maintained such that there are no visible holes, tears, or other openings in the seal or any seal**fabrir~** ormaterials; C. All openings except stub drains are equippedwith covers, lids, orseals such that: (1) thecover, lid, or seal is in the closed position at all times exceptwhen in actual use; 

### aRd (2) automatic bleeder vents are closed at all times except when the roof is being floated off or being landed on theroofleg supports; and (3) rim vents, ifprovided, are set to open only when the roof is being floated offthe roof leg supports oratthe manufacturer's recommended setting; D. Routine visua] inspections 

### are conducted through roofhatches once every 

### siK (6) 

### lll•mtRs month; and 

### E. A complete inspection ofcover and seal is soodHGted at least once iJer )'e&F perfOJ'llled at least once every ten (10}years and each time the vessel is emptied and degassed.**Thes·~** inspections

### APR-07-1999 09:47 4J7826 

# t.l 207 287 764 P.03/05 

### 06-096 

### DEPARTMENT OF ENVIRONMENTAL PROTECTION

shall be conducted by visually inspecting the floating roofdeck. deck fittings, and rim seals from within the stora&e vessel. The inspection may be performed entirely from the top side ofthe f!nating roof. as long as there is visual access to all deck components. A vessel may not be emptied and degassed for the purpose ofperforming a complete jospection between June 

## J and AUflUSt31. 

### 3. Emission Testing. The determination of compliance under this section may be made by visual inspection of the floating cover through the roof hatches by Department staff or other qualified representatives ofthe Department. The source shall be found in compliance if: A. The seal has no visible holes, tears, or other openings and is uniformly in place: around the circumference ofthe coverbetween the cover and tankwell; B. The cover is uniformly floating on or above the liquid and there are no visible holes, tears, Of 

### otheropenings in the surface ofthe cover and no liquid is accumulated on the cover; and C. All records are being properly maintained. 4. Transition Schedule. The owner oroperator offixed-roofpetroleum storage vessels located in Air Quality Control Regions 

### lll, IV and 

### V shall have until July 

### 1, 1991, to comply with the requirements under subsection 2, paragraph A. In Air Quality Control Regions ITI, IV and V, the owner or operator ofa fixed-roofpetroleum storage vessel without a floating roofor other acceptable volatile organic compound emission control equipment shall adhere to the increments ofprogress contained in the fol1owing schedule and shall reporttothe department within 15 

### days ofthe prescrilbed deadline the status ofcompliance with the each increment ofprogress. A. Final plans for the floating roof, other necessary modifications or other acceptable volatile organic compound emission control equipment shall be submitted beforeNovember 1, 

### 1989. B. Contracts for installation of the floating roof, other modifications or other acceptable volatile organic compound emission control equipment or purchase orders for component parts shall be issued before March I, 

### 1990. C. Initiation ofon-site construction or installation ofacceptable volatile organic compound emission control equipment shall begin before July I, 1990. D. Final compliance shall be achieved beforeJuly I, 

### 1991. 5. Records A. The owner oroperator ofa fixed roofstorage vessel 

### eovefed ttH€1eF

### the seepe efgove:rned by 

### this regulation shall assure the following records are maintained for a minimum oftwo years. These t·ecords shall be available for inspection during normal business hours and copies shall be provided to the Commissioner orhis representative upon request: (1) Reports ofthe results ofinspections conducted underparagraphs {2)(D) and (2)(E);



### Chapter Ill: PetroleumLiquid StorageVaporControl -2-APR-07-1999 09:48**~26** 207 287 764 P.04/05 06-096 DEPARTMENTOFENVIRONMENTALPROTECTION (2) A record of the monthly throughput quantities and types ofvolatile petroleum liquids for each storagevessel andperiod ofstorage; and (3) Records ofthe average monthly storage temperatures and true vapor pressures of volatile petroleum liquids stored. 

### B. The owner or operator of a fixed roof storage vessel with capacity greater than 150,000 liters (39,000 gallons) containing volatile petroleum liquids whose true vapor pressure is greater than 1.0 psia butless than 1.52 psia_ shall assure the following records are maintained for 

### a minimum oftwo years. These records shall be available for inspection during normal business hours and copies shall be provided totheCommissionerorhis representative upon request: (I) Records of the average monthly storage temperatures, the type of petroleum liquid, and maximum true vaporpressures ofvolatilepetr(lleum liquids stored.

AUTHORITY: 

### 38 M.R.S.A., Section 585, 

### 585-A EFFECTIVEDATE: May7, 1979 Amended: September21, 1988 Amended: October 3, 1989 Amended: November3, 1990 Amended:



### BASIS STATEMENT Gasoline is a hydrocarbon vapor that aids the formation ofozone in the atmosphere. 

### It is :necessary to control such hydrocarbon vapors present in the ahnosphere because Maine is violating the**ft~deral** ozone ambient air quality standard. This regulation controls the maximum amount ofgasoline emissions so to reduce the ozone formed_ 

### BASIS STATEMENTFORAMENDMENT OFAUGUST 10, 1988 This amendment expanded the scope of the regulation to include all Ambient Air Quality Control Regions in the State. Uncontrolled gasoline storage terminals in the Downeast and Central Maine Ambient Air Quality Control Regions have been estimated as emitting over 800 tons ofhydrocarbons annually. The use offloating roofs and vapor control systems (Chapters 111 and 112) for bulk gasoline terminals is considered Best Practical Treatment and will reduce emissionsby about94percent. 

### BASIS STATEMENTFORAMENDMENT OF SEPTEMBER27, 

### 1989 This amendment corrected certain minor deficiencies identified by the 

## u_s_ Environmental Protection Agency in the State Implementation Plan and for consistencywith State statute. The U.S. Environmental Protection Agency also commented on requiring facilities which store more than 39,000 gallons of petroleum products with a true vapor pressure greater than 1.0 psi to maintain records ofthe average monthly temperature and the maximum true vapor pressure_ The Department agrees with the comment. 

### Chapter 111: Petroleum Liquid Storage VaporControl

- 3-06-096 41./26

### ~ DEPARTMENT OF ENVIRONMENTAL

### PROTECTION 207 287 764 P.05/05 APR-07-1999 09=48

This will enable the Departmentto determine ifstorage tanks storing liquids with vapor pressuTe closeto 1.52 psi are subjecttothe regulation. 

### BASIS STATEMENT**)~OR**

### AMENDMENT OFSEPTEMBER26, 1990 During

### the 114th Session oftheMaine Legislature, 

### the Board ofEnvironmental Protection was given the authority under

### 38 M.R.S.A. 585 and 

### 585-Ato establish and amend emission standards and n:gulationsto implement ambient air quality standards and emission standards. This rule was amended to reflect the new authority under statute. No request for public hearing nor comments were received on the reauthorization. 

### BASIS STATEMENTFORAMENDMENT OF TheEnvironmental Protection Agency requires petroleum storage vessels to be inspected everyten years. Decreasingthe inspection frequency from annually to everytenyearsreducesthe overall voJa,tilc organic compound (VOC) emissions from this activity. ·

Chapter 

### Ill: PetroleumLiquid Storage Vapor

### Control -4-

TOTAL P.05