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(Adopted July 19, 1991) 

RULE 1142. MARINE TANK VESSEL OPERATIONS 

(a) Applicability 

 This rule shall apply to all loading, lightering, ballasting, and housekeeping events 

where a marine tank vessel is filled with an organic liquid; or where a liquid is 

placed into a marine tank vessel's cargo tanks which had previously held organic 

liquid. 

(b) Definitions 

 (1) BACKGROUND is the ambient concentration of volatile organic 

compounds in the air determined at least one (1) meter upwind of the 

component being inspected. 

 (2) BALLASTING is the loading of water or other liquid into a marine tank 

vessel's cargo tank to obtain proper propeller, rudder, and hull immersion. 

 (3) SOUTH COAST WATERS means the Pacific Ocean area beginning at the 

intersection of the Pacific Ocean and the Los Angeles-Ventura County 

boundary; and proceeding southwesterly to the intersection of the 

boundary of the California Coastal Waters at a point having the 

coordinates of 33o North Latitude and 119.5o West Longitude; then 

southeasterly along said boundary of the California Coastal Waters to a 

point having the coordinates of 32.5o North Latitude and 118.5o West 

Longitude; and then northeasterly to the intersection of the Pacific Ocean 

and the Orange-San Diego County boundary. 

 (4) EMISSION CONTROL EQUIPMENT means any equipment, machinery, 

apparatus, or device used to collect, store, or reduce the emissions of 

volatile organic compounds in the atmosphere. 

 (5) EXEMPT COMPOUNDS are any of the following compounds that have 

been determined to be non-precursors of ozone: 

(A) Group I 

chlorodifluoromethane (HCFC-22) 

dichlorotrifluoroethane (HCFC-123) 

tetrafluoroethane (HFC-134a) 

dichlorofluoroethane (HCFC-141b) 

chlorodifluoroethane (HCFC-142b) 
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(B) Group II 

methylene chloride 

1,1,1-trichloroethane (methyl chloroform) 

trifluoromethane (FC-23) 

trichlorotrifluoroethane (CFC-113) 

dichlorodifluoromethane (CFC-12) 

trichlorofluoromethane (CFC-11) 

dichlorotetrafluoroethane (CFC-114) 

chloropentafluoroethane (CFC-115) 

 In the future, the use of Group II compounds may be regulated by the 

District because they are toxic or potentially toxic, upper atmospheric 

ozone depleters, or cause other environmental impacts. The District Board 

has adopted a policy which states that chlorofluorocarbons (CFC) will be 

phased out at the earliest practicable date on or before 1997. 

 (6) GASEOUS LEAK means a condition that exists when the reading on a 

portable hydrocarbon meter, measured 1 centimeter or less from any 

source, exceeds 1,000 parts per million, expressed as methane, above 

background. 

 (7) HOUSEKEEPING consists of altering the composition of gases contained 

within marine vessel tanks by tank washing, gas freeing, or purging. 

 (8) LIQUID LEAK means a leak of more than three drops per minute of 

organic liquid. 

 (9) LIGHTERING is the transfer of organic liquid into a cargo tank from one 

marine tank vessel to another. 

 (10) LOADING EVENT means an incident or occurrence beginning with the 

connecting of marine terminal storage tanks or a marine tank vessel to 

marine tank vessel cargo tank(s) with pipes or hoses followed by the 

transfer of liquid cargo and ending with the disconnecting of the pipes or 

hoses; or any other means of placing liquid into cargo tanks. In addition, 

emissions resulting from the venting of volatile organic compounds in 

South Coast Waters prior to, during, or after a loading event are included 

in that loading event. 

 (11) MARINE TANK VESSEL means any tugboat, tanker, freighter, 

passenger ship, barge, boat, ship, or watercraft, which is specifically 

constructed or converted to carry liquid cargo in tanks. 
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 (12) MARINE TERMINAL means any facility, equipment, or structure 

constructed to handle the loading or unloading of organic liquid into or out 

of marine tank vessels. 

 (13) ORGANIC LIQUID means gasoline, gasoline blending stocks, aviation 

gas and aviation fuel (JP-4 type), crude oil and other liquids containing 

volatile organic compounds. 

 (14) VOLATILE ORGANIC COMPOUND means any chemical compound 

which contains the element carbon, except methane, carbon monoxide, 

carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium 

carbonate, and exempt compounds. 

(c) Requirements 

 (1) Marine Tank Vessels 

 (A) Effective January 1, 1992, an owner or operator of a marine tank 

vessel equipped with emission control equipment shall operate 

such equipment while conducting a loading, lightering, ballasting, 

or housekeeping event in South Coast Waters. 

 (B) Effective January 1, 1994 a loading, lightering, ballasting, or 

housekeeping event shall not be conducted while in South Coast 

Waters, unless: 

 (i) The emissions of volatile organic compounds are limited to 

5.7 grams per cubic meter (2 lbs per 1,000 barrels) of liquid 

loaded into a marine tank vessel; or 

 (ii) The emissions of volatile organic compounds are reduced 

by at least 95 percent by weight from uncontrolled 

conditions. 

 (2) Liquid and Gaseous Leaks 

 Effective January 1, 1994, all hatches, pressure relief valves, connections, 

gauging ports and vents, and other equipment associated with a loading, 

lightering, ballasting, or housekeeping event shall be maintained free of 

liquid or gaseous leaks. Any liquid or gaseous leak shall be tagged upon 

detection and repaired within 4 hours of detection by the owner or 

operator. Any liquid or gaseous leak detected by District staff shall 

constitute a violation of this rule. 
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 (3) Emission Control Equipment 

 The emission control equipment shall be designed and operated to collect, 

store, and process all emissions of volatile organic compounds resulting 

from a loading, lightering, ballasting, or housekeeping event. 

(d) Compliance Schedule 

 Any owner or operator of a marine tank vessel or a terminal shall submit to the 

District Executive Officer an application for a Permit to Construct by April 1, 

1992, for any equipment required to comply with the provisions of this rule. 

(e) Test Methods 

 (1) Determination of Emissions 

 Emissions of volatile organic compounds specified in subparagraph 

(c)(1)(B) shall be measured according to the Environmental Protection 

Agency's (EPA) Reference Method 25, Air Resources Board's (ARB) 

Method 2-4, District's Source Test Manual Method 25.1 (March 1989), or 

any other test method determined to be equivalent after review by the 

staffs of the District, the Air Resources Board, and the United States 

Environmental Protection Agency, and approved in writing by the District 

Executive Officer. This test shall be conducted for at least 30 minutes 

during the transfer of the last 50 percent of total liquid cargo. For events 

of less than one hour duration, the test shall include the entire last 50 

percent of total liquid cargo. 

 (2) Determination of Exempt Compounds 

 Emissions of exempt compounds shall be measured according to Air 

Resources Board Method 422 adopted January 22, 1987, or any other test 

method determined to be equivalent after review by the staffs of the 

District, the Air Resources Board, and the United States Federal 

Environmental Protection Agency and approved in writing by the District 

Executive Officer. 

 (3) Determination of Vapor Processing System Efficiency 

 Mass emission rates of vapor processing systems specified in 

subparagraph (c)(1)(B) shall be determined according to EPA's Reference 

Method 25, ARB's Method 2-4, District's Source Test Manual Method 

25.1 (March 1989) or any other test method determined to be equivalent 

after review by the staffs of the District, the Air Resources Board, and the 
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United States Environmental Protection Agency, and approved in writing 

by the District Executive Officer. 

 (4) Determination of Gaseous Leaks 

 The screening of equipment for gaseous leaks shall be conducted 

according to EPA's Reference Method 21 or the procedures in the 

District's Source Test Manual, or any other test method determined to be 

equivalent after review by the staffs of the District, the Air Resources 

Board, and the United States Environmental Protection Agency, and 

approved in writing by the District Executive Officer. 

 (5) Determination of Compliance 

 Emissions determined to exceed any limits established by this rule through 

the use of any of the above-referenced test methods shall constitute a 

violation of this rule. 

(f) Safety and Emergency 

 Nothing in this rule shall be construed as to: 

 (1) Require any act or omission that would be in violation of any regulation or 

other requirement of the United States Coast Guard; or 

 (2) Prevent any act that is necessary to secure the safety of a vessel or the 

safety of the passengers or crew. 

(g) Notice 

 Effective January 1, 1992, any owner or operator of a marine tank vessel 

intending to engage in a loading, lightering, ballasting, or housekeeping event 

shall notify the District Executive Officer in writing, or by telephone, or in person 

at least 48 hours prior to the event. Such notice shall include name(s) of marine 

tank vessel(s), description of operation(s), cargo, location, and estimated start 

time and duration of the event. 

(h) Recordkeeping 

 Effective January 1, 1994, any owner or operator of a marine tank vessel shall 

maintain two sets of records regarding each loading, lightering, ballasting, or 

housekeeping event. One set of records will be kept on board the marine tank 

vessel and the other set shall be kept at the marine terminal. Records shall be 

maintained for at least two years and shall be made available to District staff upon 

request. Such records shall be submitted annually on standard forms specified by 
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the District, and shall contain all information required on the form. The records 

shall include, but are not limited to, all of the following information: 

 (1) The location of each marine loading, lightering, ballasting, or 

housekeeping event. 

 (2) The owner or operator responsible for handling the marine loading, 

lightering, ballasting, or housekeeping event. 

 (3) The date(s) and times at which the marine tank vessel(s) arrived and 

departed from the location of the loading, lightering, ballasting, or 

housekeeping event. 

 (4) The name and registry of the vessel and legal owner of the marine tank 

vessel participating in the loading, lightering, ballasting, or housekeeping 

event. 

 (5) The prior cargo carried by the receiving marine tank vessel. 

 (6) The type and amount of liquid cargo loaded into the receiving marine tank 

vessel. 

 (7) The condition of the receiving marine tanks prior to being loaded (i.e., 

cleaned, crude oil washed, gas freed, etc.). 

 (8) The amount of ballast water or other liquid added to the unsegregated 

ballast tanks. 

 (9) The description of operating procedures to prevent venting while 

ballasting into unsegregated ballast tanks. 

 (10) The complete description of any gaseous or liquid leak detected, leak 

repair action taken, date and time of leak detection, time required to repair 

leak, and screening level after a repair has been made. 

(i) Ozone Episode Days 

 (1) Effective January 1, 1992, a loading, lightering, ballasting or 

housekeeping event shall not be conducted on any day that the District 

predicts a Stage 1 or greater ozone episode for any area of the South Coast 

Air Basin, unless the emissions of volatile organic compounds are reduced 

by at least 95 percent by weight from uncontrolled conditions, or are 

limited to 5.7 grams per cubic meter (2 pounds for every 1,000 barrels) of 

liquid loaded. 

 (2) Any marine vessel or terminal operator, who has been subject to the 

prohibition of paragraph (i)(1) for two consecutive days, may conduct a 
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marine loading, lightering, ballasting, or housekeeping event in South 

Coast Waters for up to three days following the two consecutive days of 

prohibition. 
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