Document ID: EPA-R06-OAR-2005-TX-0027-0035
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2006-08-25T04:00Z

Stage
1
emissions
are
calculated
by
multiplying
gasoline
throughput
times
an
emission
factor.
The
emission
factor
has
3
components:
transit
losses,
filling
losses,
and
breathing
losses.
Transit
and
breathing
losses
are
the
same
whether
the
station
has
Stage
1
vapor
recovery.
There
are
different
factors
for
filling
losses
depending
on
whether
vapor
recovery
is
used.
Total
factors
for
controlled
and
uncontrolled
filling
are
thus
as
shown
below:
Uncontrolled
Controlled
lb/
1000
gal
lb/
1000
gal
Transit
0.06
0.06
Filling
7.30
0.30
Breathing
1.00
1.00
TOTAL
8.36
1.36
Projected
throughputs
were
obtained
by
Bertie
Fernando
for
2007
in
the
5
new
DFW
counties
and
separated
according
to
station
monthly
throughput
based
on
CAPCO
study.

2007
gallons
per
month
County
<
10,000
10k­
125k
>
125k
Total
Ellis
13,404
4,855,154
2,390,170
7,258,727
Johnson
12,520
4,534,859
2,242,851
6,790,230
Kaufman
11,145
4,037,059
1,991,656
6,039,860
Parker
8,342
3,031,002
1,490,694
4,530,038
Rockwall
4,563
1,652,696
815,328
2,472,587
2007
gallons
per
day
County
<
10,000
10k­
125k
>
125k
Total
Ellis
441
159,709
78,624
238,774
Johnson
412
149,173
73,778
223,363
Kaufman
367
132,798
65,515
198,680
Parker
274
99,704
49,036
149,014
Rockwall
150
54,365
26,820
81,335
Uncontrolled
2007
emissions:
<
10,000
10k­
125k
>
125k
Total
Ellis
0.002
0.668
0.329
1.00
Johnson
0.002
0.624
0.308
0.93
Kaufman
0.002
0.555
0.274
0.83
Parker
0.001
0.417
0.205
0.62
Rockwall
0.001
0.227
0.112
0.34
TOTAL
0.007
2.490
1.228
3.73
Fully
controlled
2007
emissions:
<
10,000
10k­
125k
>
125k
Total
Ellis
0.002
0.109
0.053
0.16
Johnson
0.002
0.101
0.050
0.15
Kaufman
0.002
0.090
0.045
0.14
Parker
0.001
0.068
0.033
0.10
Rockwall
0.001
0.037
0.018
0.06
TOTAL
0.007
0.405
0.200
0.61
Projected
emissions
in
2007
with
no
controls:
3.73
tpd
Projected
emissions
in
2007
with
controls
on
only
>
125K
stations:
2.70
tpd
Projected
emissions
in
2007
with
controls
on
10
­
125K
and
>
125K
stations:
0.61
tpd
Projected
reduction
from
extending
controls
to
10
­
125k
stations:
2.09
tpd
tons
per
day
thurley
8/
23/
2006
DRAFT
DELIBERATIVE
POLICY
INFORMATION
INTERNAL
DISTRIBUTION
ONLY
Suppplied
by
Bertie
Fernando
2/
16/
06
UNCONTROLED
EMISSIONS
IN
2007
(
TPD)

Transit
0.0267
Breathing
0.4557
(
NO
Controls)
Submerged
Filling
3.2457
TOTAL
3.7281
CONTROLED
EMISSIONS
IN
2007
(
TPD)

Transit
0.0267
Breathing
0.4557
(
WITH
CONTROLS)
Balanced
Submerged
Filling
0.1335
TOTAL
0.6159
GPM=
gallons
per
month
2002
<
10,000(
GPM)
10k­
125k
(
GPM)
>
125k
(
GPM)

Ellis
13,404
4,714,651
2,320,994
Johnson
12,520
4,403,612
2,172,484
Kaufman
11,145
3,920,245
1,934,019
Parker
8,342
2,934,169
1,447,547
Rockwall
4,563
1,604,870
791,749
DATA
USED
FOR
THE
VOC
EMISSION
ESTIMATE
IS
GIVEN
BELOW
TOTAL
VOC
EMISSION
REDUCTION
=
3.7281­
0.6159
=
3.1122
(
TPD)
GPD=
gallons
per
day
2002
10k­
125k
(
GPD)
>
125k
(
GPD)

Ellis
155,087
76,349
Johnson
144,856
71,643
Kaufman
128,955
63,619
Parker
96,519
47,617
Rockwall
52,792
26,044
Using
EGAS
Growth
Factors
2007
Throughput
Data
GPD=
gallons
per
day
10k­
125k
(
GPD)
>
125k
(
GPD)

Ellis
159,709
78,624
Johnson
149,173
73,778
Kaufman
132,798
65,515
Parker
99,704
49,036
Rockwall
54,365
26,820
2002
Submerged
Filling
Emissions
(
TPD)
2501060051
EF=
7.3
lb/
1000gals
No
Controls
10k­
125k
(
GPD)
>
125k
(
GPD)

0.56610
0.27867
0.52872
0.26150
0.47069
0.23221
0.35230
0.17380
0.19270
0.09506
TOTAL
2.11051
1.04124
2007
Submerged
Filling
Emissions
(
TPD)
2501060051
EF=
7.3
lb/
1000gals
No
Controls
10k­
125k
(
GPD)
>
125k
(
GPD)

0.58300
0.28700
0.54450
0.26930
0.48470
0.23910
0.36280
0.17900
0.19840
0.09790
TOTAL
2.17340
1.07230
2007
Balanced
Submerged
Filling
Emissions
(
TPD)
2501060053
EF=
0.3
lb/
1000gals
(
THIS
IS
With
Controls)

10k­
125k
(
GPD)
>
125k
(
GPD)

0.02400
0.01180
0.02240
0.01110
0.01992
0.00983
0.01491
0.00736
0.00815
0.00400
TOTAL
0.08938
0.04409
2002
Breathing
2002
Transit
Emissions
(
TPD)
2501060201
Emissions
(
TPD)
2505030120
EF=
1lb/
1000gals
EF=
0.06
lb/
1000gals
10k­
125k
(
GPD)
>
125k
(
GPD)
10k­
125k
(
GPD
>
125k
(
GPD)

0.07754
0.03817
Ellis
0.00470
0.00230
0.07243
0.03582
Johnson
0.00440
0.00230
0.06450
0.03181
Kaufman
0.00387
0.00190
0.04826
0.02308
Parker
0.00290
0.00143
0.02640
0.01302
Rockwall
0.00160
0.00080
0.28913
0.14190
TOTAL
0.01747
0.00873
2007
Breathing
2007
Transit
Emissions
(
TPD)
2501060201
Emissions
(
TPD)
2505030120
EF=
1lb/
1000gals
EF=
0.06
lb/
1000gals
10k­
125k
(
GPD)
>
125k
(
GPD)
10k­
125k
(
GPD
>
125k
(
GPD)

0.08000
0.03633
Ellis
0.00480
0.00236
0.07467
0.03683
Johnson
0.00448
0.00221
0.06633
0.03283
Kaufman
0.00398
0.00197
0.04983
0.02450
Parker
0.00299
0.00147
0.02717
0.02717
Rockwall
0.00163
0.00081
0.29800
0.15766
TOTAL
0.01788
0.00882