Pursuant to the
Paperwork Reduction Act (PRA) and OMB regulations, this collection
of information is approved through February of 1996. The supporting
statement for this Information Collection Request (ICR) indicates
that there may be some bias in emissions factors resulting from
differences in sampling methodologies. EPA's conclusions regardi
the direction of these biases seem counter intuitive. Prior to
submission of this collection for review under the PRA, EPA should
conduct additional research to measure and correct any biases
arising from selection artifacts. In addition, EPA should examine
the magnitude of the effect these potential biases may have on EPA
modelin results. The results of this research and any corrective
action taken or proposed should be described fully in the next
request for approval of this collection.
Inventory as of this Action
Requested
Previously Approved
02/28/1996
02/28/1996
12/31/1992
8,604
0
5,270
3,347
0
2,051
0
0
0
THE EMISSION FACTORS SURVEY TESTS A
RANDOM SAMPLE OF PRIVATELY OWNED MOTOR VEHICLES, STRATIFIED BY
CLASS OF VEHICLE AND BY MILEAGE OF VEHIC USED WITHIN EACH CLASS,
FOR THE PURPOSE OF CHARACTERIZING LEVELS OF EXHAUST POLLUTANTS FOR
EACH COMBINATION OF CLASS AND MILEAGE IN THE SAMPLE. THE DATA
GENERATED BY THIS SURVEY ARE USED TO MEASURE MODEL A
On behalf of this Federal agency, I certify that
the collection of information encompassed by this request complies
with 5 CFR 1320.9 and the related provisions of 5 CFR
1320.8(b)(3).
The following is a summary of the topics, regarding
the proposed collection of information, that the certification
covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a
benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control
number;
If you are unable to certify compliance with any of
these provisions, identify the item by leaving the box unchecked
and explain the reason in the Supporting Statement.