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OAR Box 1147 

Prepped by Ollie Stewart 

Document Number: 

232) IV-E-106 

Docket Number: 

A-87-11 

Printed 4/22/2008 2:42:59 PM Sheet 232 of 242 
.tfto sr.,,. 

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

ANN ARBOR. MICHIGAN 48105 

i-ip: 

OFFICE OF 

AIR AND RADIATION 

MEMORANDUM 

SUBJECT: 

FROM: 

THRU: 

TO: 

Meeting with AAMA Regarding Onboard Refueling 

Test Procedures - IV 

Michael J. Samulski, Mechanical Engine 

Engine and Vehicle Regulations Branch 

Joanne I. Goldhand, Chi 

Engine and Vehicle Regul 

Public Docket A-87-11 

ranch 

On July 20, 1993 members of the Environmental Protection 

Agency (EPA) staff met with representatives of the American 

Automobile Manufacturers Association (AAMA) to discuss potential 

changes to the refueling emission test procedures as laid out in 

EPA's recently published Federal Register notice on this issue (May 

27, 1993, 58 FR 30731). The meeting which was held at the EPA lab 

in Ann Arbor was in follow-up to the meeting of July 15, 1993 on 

the same topic. An attendees list is attached. 

A copy of the material presented by AAMA at the meeting is 

also attached. Discussions focused on questions from the previous 

meeting on potential changes in the test procedure as they relate 

to the effects on canister size and the fillneck seal approach 

used. 

Attachments 
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ATTENDEES 

EPA\AAMA MEETING 

July 20, 1993 

NAME 

Charles Gray 

Chet France 

Joanne Goldhand 

Mike Samulski 

Sam Leonard 

Jim Pasek 

Gordon Allardyce 

Mike Schwarz 

Richard Klimish 

AFFILIATION 

EPA 

EPA 

EPA 

EPA 

GM 

GM 

Chrysler 

Ford 

AAMA 
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ORVR Vapor Generation 

Comparison of Mechanical and Liquid Seals 

Over the July 16-18 Weekend, Ford conducted refueling vapor generation tests using the 

parameters listed below on a Crown Vic and Continental liquid and mechanical seal fuel 

systems. The vapor generation for these systems are as follows: 

Conditions Of Test: 

Fuel RVP - 9.0 psi 

Dispensing Fuel Temperature - 67 °F 

Residual Fuel Temperature - 80 ° F 

Number of test runs - 1 

Results: 

Vapor Generation (g/gal) 

Vehicle 

Continental 

Crown Vic 

MS 

3.48 

2.79 

LS 

4.25 

3.85 

LS 

Penalty 

22% 

38% 

Note: The EPA predicted value for the uncontrolled condition is: 3.15 g/gal. This would 

be comparable to a mechanical seal configuration. 

Recall, for refueling canister capacity to be no greater than required for enhanced 

evaporative emissions, the vapor generation would have to be approximately 4.0 g/gal. 
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/!/-£-/ Of 

MEMORANDUM 

TO: On-board Administrative Record (CAA Docket 87-11) 

FROM: Steven Silverman, OGC 

RE: Tel Con with Howard Fox, Sierra Club Legal Defense Club 

On July 9, I had a phone call from Howard Fox, 

representing NRDC, regarding the on-board rulemaking. He asked 

general questions regarding the potential scope of a final rule, 

the ability of the Agency to complete a rule covering both 

section 202 (a) (6) and non-202 (a) (6) vehicles by January 22, 

1994, whether any new information regarding safety had been 

brought forward, and what the potential impact on the California 

waiver might be. NRDC has not reached any conclusions on these 

issues, intends to submit comments in response to the reopening 

notice, and may testify at the public hearing.