p.1 

OAR Box 1147 

Prepped by Ollie Stewart 

Document Number: 

202) IV-E-76 

Docket Number: 

A-87-11 

Printed 4/22/2008 2:42:58 PM Sheet 202 of 242 
4**"*% 

"UL-E - 7 £ 

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

ANN ARBOR. MICHIGAN 48105 

OFFICE OF 

AIR AND RADIATION 

OCT 2 4 1988 

MEMORANDUM 

SUBJECT: 

FROM: 

TO: 

Meeting With Ford on Evaporative Emissions Modeling 

John Anderson, Senior Project Manager 

Standards Development and Support Branch 

Dockets A-87-11 and A-85-21 

On October 6, 1988, Rick Rykowski, Dave Bartus and I met 

with Walt Kreucher and George Lavoie of Ford to obtain more 

information on Ford's modeling of fuel tank vapor generation. 

The attached materials were used by Ford in explaining its 

approach. The meeting included general discussion of both the 

Ford and EPA evaporative models. 

We also discussed some questions about the Taurus fuel 

tank configuration used by Ford in its onboard system. The 

refueling vapor control valve was located in the same location 

as the original vent valve (near front of tank) and most of the 

floor pan above the tank was removed to provide access to the 

top of the tank. When questioned about possible liquid 

expulsion from pressure build-up if the vehicle were parked 

with the valve in a downward tilt (vehicle nose down), Ford 

indicated that it v/ould take a very high angle to submerge the 

valve even with a full tank, and that such a condition would 

uncover, the fill pipe at the same time. One tank vent is 

considered sufficient by Ford. 

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