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OAR Box 1147 

Prepped by Ollie Stewart 

Document Number: 

176) IV-E-49 

Docket Number: 

A-87-11 

Printed 4/22/2008 2:42:56 PM Sheet 176 of 242 
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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

ANN ARBOR. MICHIGAN 48105 

OFFICE OF 

AIR AND RADIATION 

MAY 2 3 1988 

MEMORANDUM 

SUBJECT: API Vehicle Refueling Emissions Task Force Meeting 

FROM: 

TO: 

THRU: 

Glenn W. Passavant, Senior Project Manager 

Standards Development and Support Branch 

Public Docket A-87-11 

Chester J. France, Chief'/

 A; /, 

Standards Development/tfrid Branch 

On April 15, 1988 Glenn W. Passavant of EPA/OMS was an 

observer at a meeting of the Vehicle Refueling Emissions Task 

Force of the American Petroleum Institute (API) at Exxon 

Research and Enqineering in Linden, New Jersey. A list of 

attendees and an agenda for the meeting are attached. As can 

be seen in the agenda, the purpose of the meeting was for 

representatives of the API member companies to discuss vehicle 

refueling related work completed by API in the recent past and 

that planned for the near future. 

The meeting included a review of the safety work recently 

completed for API by ICF and Energy Analysts, and a review of 

the key points in the comments on EPA's onboard NPRM and the 

recent Center for Auto Safety Report on vehicle fire safety. 

The committee also discussed the results of API's recent 

onboard system development on the 1987 Buick LeSabre (see 

attached) and the work they have planned for the future on a 

Ford Taurus. These vehicles and onboard hardware for the 

LeSabre were viewed 

vehicles were shown. 

and the onboard system designs for these 

Past technical r"?ocrts and recent work on vent losses 

(breathing and emptying losses) was discussed, and a brief 

report was presented by Exxon (see attached). Exxon plans 

future work in this area. 
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During the opening remarks, the EPA representative 

reviewed past and recent events in the refueling control NPRM 

and the schedule of events in the immediate future, including 

reproposal of the onboard rule for safety and other changed 

circumstances. EPA's new onboard system was briefly described 

along with our experience in recent briefings on the system. 

In terms of technical input, EPA suggested four areas of 

information which API or others may choose to provide which 

could be helpful in analysis of comments and development of the 

final rule. These included: 

° Vent loss measurements on: 1) a self service 

non-24-hour Stage II station, 2) a 24-hour self 

service Stage II station, 3) a self service 

non-24-hour regular station with warmer fuel and air 

temperatures than in their first tests, and 4) a 

self service non-24-hour regular station with a vent 

pressure/vacuum cap. 

° A more in-depth assessment of Stage II hardware 

failures which could affect Stage II efficiency and 

yet may not be observable by visual inspection. The 

need for information on failure modes, rates, and 

emission impacts was also discussed. 

° A more thorough and. recent assessment of fuel 

spillage during refueling. It was suggested that 

surveys for self serve and full serve would be 

helpful for both regular and Stage II-equipped 

service stations. 

° A survey of in-use dispensing rates for both self 

serve and full serve stations, for a wide variety of 

vehicle types, nobles, dispensers, etc. 

Attachments