APPENDIX
L
MAINTENANCE
FOR
GROWTH
SAN
ANTONIO
EAC
REGION
ATTAINMENT
DEMONSTRATION
MARCH
2004
L­
2
Appendix
L
Table
of
Contents
Page
Introduction                            .
L­
6
Emissions
Trend
Analysis                      
L­
6
Data
Compiled
for
Analysis                  
L­
6
Data
Variation
between
Emission
Inventories       
L­
7
Non
Road
Sources               
L­
7
Agriculture
Equipment          ..
L­
7
Recreational
Boating           .
L­
7
Residential
Equipment          .
L­
7
Airport/
Military
Sources             .
L­
7
Brooks
Air
Force
Base          .
L­
7
Camp
Bullis
and
Fort
Sam
Houston    ..
L­
7
Lackland
AFB
and
Randolph
AFB     ..
L­
8
Small
Airports              .
L­
8
New
Braunfels
Municipal
and
St.
Geronimo
Airport           .
L­
8
Area
Sources                 .
L­
8
Asphalt
Paving              
L­
8
Agriculture
Fertilizer           ..
L­
8
Biogenic
Sources                
L­
8
Forecasting
Methodologies                     ..
L­
9
Non­
Road
Emissions                     
L­
9
Locomotives                     .
L­
9
Non­
Road
Equipment
Usage
at
Toyota          
L­
10
Tier
3
Non­
Road
Equipment               
L­
12
Airport/
Military
Emissions                   .
L­
12
Area
Source
Emissions                    
L­
13
Projecting
Emissions
with
the
EGAS
Model        
L­
13
Control
Measures
in
2007
and
2012           .
L­
14
Degreasing
Emissions              
L­
14
On­
Board
Refueling
Vapor
Recovery
(
ORVR)    
L­
15
Stage
I
Vapor
Recovery
Systems         .
L­
16
Regulation
V
Rules
Affecting
Area
Source     .
L­
20
Emissions
Projection
with
Population
Estimates   .   .
L­
20
Rate
of
Progress
Control
Factors         .
L­
20
Biogenic
Source
Emissions                  .
L­
22
Point
Source
Emissions                     
L­
22
Tessman
Road
Landfill
Gas
Power
Station       .. .
L­
22
Guadalupe
County
Power
Plants             
L­
23
Toyota
Manufacturing
Plant               
L­
23
Electric
Generating
Units
(
EGU)
and
Non­
electric
Generating
Units
(
NEGU)                .
L­
24
City
Public
Service                   .
L­
24
L­
3
Appendix
L
Table
of
Contents
(
cont'd)
Page
Legislative
Actions                   .
L­
24
Senate
Bill
7                   
L­
25
Senate
Bill
766                  
L­
25
On
Road
Source
Emissions                   
L­
25
Trend
Analysis         
                ...
L­
25
Conclusion                              
L­
26
Area
Sources                         ..
L­
27
Point
Sources                         .
L­
27
On
Road
Sources                       ..
L­
27
Non
Road
Sources                       
L­
27
L­
4
Appendix
L
List
of
Tables
Page
Table
L­
1
EPA
Emission
Factors
Used
in
Calculating
Locomotive
Emissions
L­
10
Table
L­
2.
Locomotive
Emissions
1999,
2007,
and
2012
in
the
San
Antonio
EAC
Region
           .           .
L­
10
Table
L­
3
2007
Ton
per
Day
Toyota
Plant
Non
Road
Emissions,
Bexar
County                      .
L­
11
Table
L­
4
2012
Ton
per
Day
Toyota
Plant
Non
Road
Emissions,
Bexar
County                      
L­
12
Table
L­
5
Airport/
Military
Emissions
for
the
San
Antonio
EAC
Region  .
L­
13
Table
L­
6
Degreasing
Emissions
with
and
without
Chapter
106
Reductions
L­
15
Table
L­
7
2007
ORVR
Reductions
for
the
SAER
by
Modeling
Episode
Days                          
L­
16
Table
L­
8
Comparison
of
Average
Weekday
VOC
tons/
day
Emissions
From
Vehicle
Refueling
(
SCC
2501060100)         
L­
16
Table
L­
9
2007
Emissions
from
Tanker
Unloading
in
San
Antonio
EAC
Region                         
L­
18
Table
L­
10
2012
Emissions
from
Tanker
Unloading
in
San
Antonio
EAC
Region                         
L­
19
Table
L­
11
Emission
Reduction
Due
to
Stage
I
Implementation
in
the
95­
County
Region                     .
L­
19
Table
L­
12
Stage
I
Emission
Reductions
(>
125,000
gal/
mo)
for
the
SAER
Counties,
2007                  .
L­
20
Table
L­
13
Stage
I
Emission
Reductions
(>
125,000
gal/
mo)
for
the
SAER
Counties,
2012                 ...
L­
20
Table
L­
14
Rate
of
Progress
Control
Factors             .
L­
21
Table
L­
15
2007
Bexar
County
Area
Source
Emissions
impacted
by
ROP...
L­
21
Table
L­
16
2007
&
2012
ROP
Emission
Reductions     .     
L­
22
Table
L­
17
Biogenic
Emissions
for
the
San
Antonio
EAC
Region    ..
L­
22
Table
L­
18
Projected
2012
Emissions
for
the
Natural
Gas
Power
Plant
in
Guadalupe
County               .
L­
23
Table
L­
19
Point
Source
Emissions
from
Toyota
Plant,
Bexar
County,
2007
&
2012               ...
L­
23
Table
L­
20
Non­
CPS
EGU
and
NEGU
Emissions
for
2007
and
2012  .
L­
24
Table
L­
21
Projected
CPS
Emissions
from
2007
to
2012       ..
L­
24
Table
L­
22
Historic
Anthropogenic
Emission
Trend
within
the
San
Antonio
Early
Action
Compact
Region
                 
L­
29
L­
5
Appendix
L
List
of
Figures
Page
Figure
L­
1
Stage
I
Vapor
Recovery
System             
L­
17
Figure
L­
2
Dual
Point
Top
Filling
System              
L­
17
Figure
L­
3
Dual
Point
Bottom
Filling
System            ..
L­
18
Figure
L­
4
Coaxial
System                    
L­
18
Figure
L­
5
Trend
Line
Analysis
of
VOC
and
NOx
Emissions
in
the
SAER,
1996,
1999,
2007,
2012                .
L­
26
L­
6
INTRODUCTION
Due
to
the
rapid
economic
growth
and
expansion
of
residential
areas
that
San
Antonio
area
is
experiencing,
updates
of
emission
sources
must
be
considered
and
their
impacts
on
regional
air
quality
must
be
determined.
As
motorists
from
new
residential
areas
commute
to
new
businesses,
new
travel
patterns
emerge.
The
Early
Action
Compact
mandates
that
the
impacts
of
new
travel
patterns
as
well
as
new
emission
sources
be
continually
measured
to
insure
the
region's
maintenance
of
the
8­
hour
NAAQS
beyond
the
2007
attainment
date.
Therefore,
emissions
were
projected
to
2012
to
demonstrate
the
San
Antonio
EAC
Region's
(
SAER)
maintenance
of
the
8­
hour
NAAQS
five
years
beyond
the
2007
attainment
date.

Emission
projections
were
done
in
accordance
with
EPA
guidance
and
by
utilizing
various
models.
A
vast
array
of
data
was
put
into
different
models
to
project
the
expected
conditions,
such
as
growth
of
population,
distribution
of
residential
areas,
and
increased
numbers
of
vehicles
and
equipment.

One
of
the
deliverables
required
under
the
Early
Action
Compact
protocol
is
an
analysis
of
emissions
inventory
trends.
Specifically,
the
protocol
states
"
emissions
inventories
will
be
compared
and
analyzed
for
trends
in
emission
sources
over
time."
The
original
deliverable,
an
Emissions
Trend
Analysis
utilizing
National
Emissions
Trends
(
NET)
Emissions
Inventories
(
EIs),
was
completed
and
submitted
to
the
Texas
Commission
on
Environmental
Quality
and
the
US
Environmental
Protection
Agency
by
the
due
date
of
September
30,
2003.
The
entirety
of
this
earlier
report
is
incorporated
into
the
present
appendix,
and
has
been
expanded
to
meet
the
further
analysis
required
for
a
comprehensive
Maintenance
for
Growth
report,
completing
an
analysis
to
2012.

EMISSIONS
TREND
ANALYSIS
The
preceeding
sections
describe
the
methodologies
and
data
employed
in
developing
the
trend
analysis
for
the
SAER.
The
descriptions
will
provide
insight
in
the
development
of
the
1999,
2007,
and
2012
EIs.

Data
Compiled
for
Analysis
Data
from
NET
emissions
inventories
and
projected
NET
emissions
inventories
were
used
in
the
development
of
air
quality
trends
within
the
San
Antonio
EAC
Region.
Volatile
organic
compounds
(
VOC),
oxides
of
nitrogen
(
NOx),
and
carbon
monoxide
(
CO)
emissions
are
the
three
main
pollutants
that
are
measured
in
the
emission
inventories.
These
emissions
are
presented
in
the
following
categories:
Non­
road
source,
airport/
military,
area
source,
point
source,
biogenic
source,
and
on­
road
source.

The
inventories
utilized
are
as
follows:
 
1996
Emission
Inventory
for
the
AACOG
Region
 
1999
Emission
Inventory
for
the
AACOG
Region
 
2007
Projected
Emission
Inventory
for
the
AACOG
Region
­
Attainment
Year
 
2012
Projected
Emission
Inventory
for
the
AACOG
Region
­
5
Yr.
Past
Attainment
These
emission
inventories
were
developed
by
employing
various
methodologies,
some
of
which
were
recommended
from
local,
state,
or
federal
levels.
The
inventories
provide
data
on
many
regional
pollution
sources,
their
emissions
amounts,
and
their
emission
Part
of
the
NET
EI
L­
7
rates.
By
understanding
these
varied
sources
of
ozone
pollution,
planners,
political
leaders,
and
concerned
citizens
can
work
together
and
find
ways
to
better
manage
them.
Thus,
the
emission
inventory,
as
a
means
of
record
keeping,
proves
to
be
an
important
tool
for
the
air
quality
planning
and
management
process.

AACOG
had
compiled
a
1994
Emissions
Inventory,
which
is
not
incorporated
in
the
trend
analysis
and
deemed
unusable
for
comparison
purposes.
One
reason
involves
the
differences
in
the
methodologies
used
to
calculate
emissions.
Also,
some
emissions
were
categorized
differently
in
the
1994
EI.

Data
Variation
between
Emission
Inventories
The
1996
and
1999
emissions
inventories
were
developed
and
produced
by
AACOG
staff.
When
developing
the
1999
EI,
several
sources
were
re­
categorized
and/
or
expanded
in
an
effort
to
express
emissions
more
clearly
as
compared
to
the
1996
EI.
In
addition,
some
methodologies
were
improved
or
replaced
to
produce
more
accurate
results.
The
following
categories
underwent
changes
from
the
1996
EI
to
the
1999
EI.

Non­
Road
Sources
The
differences
between
each
subcategory
in
the
1996
and
1999
EI's
are
described
in
greater
detail
in
the
following
paragraphs.

Agricultural
Equipment
Different
from
the
1996
Emission
Inventory,
agricultural
equipment
types
were
subdivided
into
2
groups
for
the
1999
EI:
tractors
and
combines.
A
number
of
new
small
polluters
were
added
also,
including:
sprayers,
hydro­
power
units,
balers,
agricultural
mowers,
tillers,
swatters,
other
agricultural
equipment,
and
irrigation
sets.
These
new
polluters
were
subdivided
according
to
their
fuel
and
engine
type:
2­
stroke,
4­
stroke,
LPG,
CNG,
and
diesel.

Recreational
Boating
The
methodology,
which
had
caused
unrealistic
results
in
the
1996
EI,
was
updated
for
1999
by
using
the
non­
road
model
in
place
of
population
data.
The
1999
methodology
was
based
on
the
EPA's
non­
road
emissions
inventory
model.

Residential
Equipment
This
category
was
renamed
as
the
"
Lawn
&
Garden
Equipment"
and
was
divided
into
"
Residential"
and
"
Commercial"
categories
in
the
1999
EI
to
provide
more
detailed
emission
data.
In
the
1996
EI,
the
residential
and
commercial
use
were
not
identified
separately,
rather
they
were
combined
into
the
total
emission
estimates.

Airport/
Military
Sources
Several
alterations
were
done
to
the
methodology
of
calculating
airport
and
military
emissions
for
the
1999
EI
as
compared
to
the
1996
EI.

Small
Airports
The
airport
category
was
added
to
various
counties
for
small
airports.
This
includes
the
Horizon
Airport
and
Twin
Oaks
Airport
were
new
additions
for
Bexar
County
in
the
1999
EI,
accounting
for
0.0024
tons/
day
VOC
and
0.0004
tons/
day
NOx.
Also,
The
New
Braunfels
Municipal
Airport
and
San
Geronimo
Airport
were
added
to
Guadalupe
County
in
the
1999
EI,
accounting
for
.0086
tons/
day
VOC
and
.0014
tons/
day
NOx.
L­
8
Brooks
AFB
Several
categories
were
added
in
regards
to
the
"
area
source"
emissions
within
Brooks
AFB.
These
categories
included:
aboveground
storage
tanks,
degreasing
and
solvent
cleaning,
surface
coating,
and
underground
storage
tanks.
Mobile
source
emissions
were
added
to
non­
road
emissions.

Lackland
AFB
and
Randolph
AFB
Many
emission
categories
were
removed
from
the
1996
EI
while
new
categories
were
added
to
the
1999
EI.
This
reorganization
did
not
significantly
affect
the
amount
of
emissions
for
these
bases.

Area
Sources
There
were
minimal
changes
to
the
methodologies
used
for
calculating
area
source
emissions
totals.

Asphalt
Paving
The
1996
EI
only
accounted
for
one
type
of
asphalt,
cutback
asphalt,
for
the
AACOG
region.
The
1999
EI
contained
emission
estimates
for
emulsified
and
cutback
asphalt.
Two
methods
were
used
for
calculations
of
emissions
for
the
1999
EI.
One
formula
multiplied
the
density
of
the
used
asphalt
with
the
diluent
volume
percentage
and
the
cure
rate.
The
other
method
of
calculation
involved
the
multiplication
of
a
volume
based
emission
factor
(
lbs
VOC/
barrel
of
asphalt)
to
calculate
emissions.
The
emission
factor
varied
depending
on
whether
the
asphalt
was
cutback
or
emulsified.

Agricultural
Fertilizer
The
methodology
for
the
1999
EI
differed
than
the
methodology
employed
in
the
1996
EI.
In
the
1999
EI,
updated
formulas
were
utilized
to
account
for
side­
planting
and
sidedressing
application
of
fertilizer.
Ozone
season
duration
was
adjusted
to
include
April
and
October
(
from
154
days/
year
in
1996,
to
214
days/
year
in
1999).

Biogenic
Sources
In
the
1996
EI,
PCBeis
version
2.3
model
was
run
by
the
AACOG
staff
to
obtain
biogenic
emission
total,
however,
this
method
did
not
produce
estimations
for
NOx
emissions.
In
the
development
of
the
1999
EI,
AACOG
utilized
emissions
totals
developed
by
The
University
of
Texas
in
Austin
(
UT),
which
was
generated
with
the
GloBeis,
version
2.2,
model.
The
1999
Emissions
Inventory
had
both
VOC
and
NOx
emissions
totals
from
biogenic
source.

The
base
case
used
in
projections
of
2007
and
2012
emission
data
came
from
the
1999
Emissions
Inventory,
which
is
the
most
recent
emission
inventory.
Several
different
methods
were
employed
in
the
development
of
these
two
projections
and
are
described
in
the
following
sections.

FORECASTING
METHODOLOGIES
The
2007
projection
was
developed
to
produce
the
2007
EI,
which
is
described
in
detail
in
Appendix
F,
Future
Year
Modeling
Emission
Inventory
Development.
The
2007
emissions
were
projected
using
EPA
approved
methodologies
and
are
described
under
their
respective
categories
below.
The
methodologies
for
the
forecast
of
2012
emission
sources
are
the
same
as
methods
employed
for
projecting
2007
emission
estimates
with
some
exceptions.
L­
9
For
the
2012
projections,
various
federal,
state,
and
local
regulatory
measures
are
expected
to
be
fully
implemented,
whereas
for
the
2007
projections,
some
strategies
were
considered
to
be
in
the
beginning
and
middle
stages
of
implementation
and
did
not
have
a
substantial
effect
on
emissions.
Also,
additional
sources
may
have
come
into
existence
after
2007.
These
exceptions
have
been
taken
into
account
when
estimating
future
emissions.

The
population
figures
used
to
estimate
some
emission
categories
in
2012
were
developed
using
a
straight­
line
extrapolation
from
2010
and
2020
population
forecasts
obtained
from
the
Texas
Water
Development
Board
(
TWDB)
report,
"
Population
Projections
by
County
for
2000­
2050"
(
TWDB,
2000).

Non
Road
Emissions
The
2007
and
2012
projected
non­
road
emissions
were
developed
using
the
EPA's
NONROAD
2000
model.
Federal
programs
including:
Standards
for
Compressionignition
Vehicles
and
Equipment,
Standards
for
Spark­
ignition
Off­
road
Vehicles
and
Equipment,
Tier
III
Heavy­
duty
Diesel
Equipment,
Locomotive
Standards,
Recreational
Marine
Standards,
and
Lawn
and
Garden
Equipment
were
accounted
for.
Detailed
descriptions
of
these
federally
mandated
programs
are
in
Appendix
F
­
2007
Emission
Inventory
Development.
The
non­
road
emissions
totals
were
calculated
by
using
the
following
equation:

Base
Case
Year
Non
Road
Model
Emissions
=
Base
Case
Emission
Inventory
Projection
Year
Non
Road
Model
Emissions
Projection
Year
Emission
Inventory
Several
sources
had
other
methodology
for
calculating
emissions
because
factors
are
not
available
in
the
NONROAD
model.
In
the
non­
road
category,
locomotives
were
calculated
to
reflect
a
larger
population
of
engines
that
were
compliant
with
Tier
2
and
3
standards
in
2007
and
2012.
Also,
equipment
populations
were
increased
to
account
for
additional
equipment
used
at
the
Toyota
Manufacturing
Plant
during
Phase
I
operations
in
2007.
Phase
II
operations
are
expected
to
double
the
size
of
the
plant
in
2009.
The
non­
road
equipment
emissions
from
the
Toyota
Plant
were
doubled
to
account
for
Phase
I
and
II
operations
in
2012.
Some
of
the
diesel
engines
in
non­
road
equipment
will
be
Tier
3
compliant
in
2007
and
majority
of
diesel
engines
in
2012
are
expected
to
be
of
Tier
3.
These
details
are
explained
below.

Locomotives
The
Environmental
Protection
Agency
established
emission
standards
for
locomotive
engines
applied
by
the
date
of
manufacture.
(
USEPA,
1997)
Since
locomotive
engines
manufactured
in
2005
are
subjected
to
Tier
2
standards,
the
locomotive
population
in
2007
will
consisted
of
new
and
older
engines.
For
the
2012
emission
projection,
locomotive
emissions
were
calculated
to
reflect
full
Tier
2
implementation
since
the
majority
of
locomotives
are
expected
to
have
the
newer
engines
adhering
to
the
EPA
requirement.

To
calculate
the
projected
locomotive
emissions
for
2007
and
2012,
the
1999
base
case
emissions
were
multiplied
by
an
emission
factor
that
takes
into
account
the
stringent
controls.
Based
on
a
reduction
factor
provided
by
the
EPA,
2007
Hydrocarbons
(
HC)
1
1
HC
emissions
can
be
converted
to
VOC
emissions
by
multiplying
by
1.05
L­
10
emissions
are
projected
nearly
10%
less
than
emissions
in
1999.
HC
emissions
in
2012
are
calculated
to
be
17%
less
than
1999.
NOx
emissions
in
2007
are
projected
to
be
approximately
36%
less
than
1999
NOx
emissions.
NOx
emissions
in
2012
are
expected
to
be
43%
less
than
the
1999
locomotive
emissions.

Table
L­
1
lists
the
emission
reductions
used
to
calculate
the
new
locomotive
emissions
with
the
implementation
of
Tier
2.
Table
L­
2
details
the
locomotive
emissions
in
1999,
2007,
and
2012.

Table
L­
1.
EPA
Emission
Factors
Used
in
Calculating
Locomotive
Emissions
HC
CO
NOx
Year
g/
bhp­
hr
%
reduction
G/
bhphr
%
reduction
g/
bhp­
hr
%
reduction
1999
0.52
0.0
1.32
0.0
13.3
0.0
2007
0.47
9.6
1.32
0.0
8.51
36.0
2012
0.43
17.3
1.32
0.0
7.62
42.7
Table
L­
2.
Locomotive
Emissions
1999,
2007,
and
2012
in
the
San
Antonio
EAC
Region
1999
2007
2012
County
VOC
NOx
VOC
NOx
VOC
NOx
Bexar
0.13
2.99
0.12
1.91
0.11
1.71
Comal
0.04
0.82
0.03
0.53
0.03
0.47
Guadalupe
0.10
2.26
0.09
1.44
0.08
1.29
Wilson
0.00
0.00
0.00
0.00
0.00
0.00
Non­
Road
Equipment
Usage
at
Toyota
Aside
from
the
emissions
emitted
by
the
new
Toyota
plant,
emissions
will
also
be
produced
by
non­
road
equipment
usage
at
the
plant.
Table
L­
3
provides
the
projected
emissions
of
the
different
equipment
types
that
will
be
used
as
part
of
the
manufacturing
plant's
operations
in
2007
and
table
L­
4
lists
the
2012
emission
estimates.
These
equipment
emissions
are
based
on
2,000
employees
for
Phase
1
in
2007
and
4,000
employees
for
Phase
2.
A
further
description
of
the
methodology
to
calculate
these
emissions
is
provided
in
Appendix
F:
2007
EI
Develop.
L­
11
Table
L­
3.
2007
Ton
per
Day
Toyota
Plant
Non
Road
Emissions,
Bexar
County
SCC*
Equipment
Description
Est.
Equip.
Pop.
VOC
(
t/
d)
NOx
(
t/
d)

2265003020
2­
str
Sweepers/
Scrubbers
0.4
0.000017
0.000001
2267003020
4­
str
Aerial
Lifts
4
0.000822
0.000315
2268003020
4­
str
Forklifts
2.3
0.002539
0.001134
2265003010
4­
str
Other
General
Ind.
Equip.
9.8
0.001020
0.000203
2267003010
4­
str
Other
Material
Handling
Equip.
0.2
0.000065
0.000025
2270003020
4­
str
Sweepers/
Scrubbers
2.3
0.000599
0.000237
2270003010
4­
str
Terminal
Tractors
0.7
0.000301
0.000135
2267003070
CNG
Forklifts
4.6
0.000008
0.005978
2260003040
CNG
Other
General
Ind.
Equip.
0
0.000000
0.000000
2268003070
CNG
Sweepers/
Scrubbers
0
0.000000
0.000000
2265003040
CNG
Terminal
Tractors
0
0.000000
0.000000
2267003040
Dsl
Aerial
Lifts
4.1
0.000239
0.001159
2268003040
Dsl
Forklifts
12.7
0.001344
0.013099
2265003050
Dsl
Other
General
Ind.
Equip.
8.3
0.000618
0.007399
2267003050
Dsl
Other
Material
Handling
Equip.
0.6
0.000072
0.000431
2270003040
Dsl
Sweepers/
Scrubbers
4.2
0.000826
0.006187
2265003030
LPG
Forklifts
39.6
0.000001
0.001034
2260003030
LPG
Aerial
Lifts
2.1
0.000107
0.083179
2268003030
LPG
Other
General
Ind.
Equip.
0.2
0.000000
0.00022
2270003030
LPG
Other
Material
Handling
Equip.
0.1
0.000000
0.000055
2267003030
LPG
Sweepers/
Scrubbers
0.7
0.000001
0.00074
2265003070
LPG
Terminal
Tractors
0.1
0.000001
0.000466
TOTAL
97
0.008580
0.121997
*
Source
Classification
Code
L­
12
Table
L­
4.
2012
Ton
per
Day
Toyota
Plant
Non
Road
Emissions,
Bexar
County
SCC*
Equipment
Description
Est.
Equip.
Pop.
VOC
(
t/
d)
NOx
(
t/
d)

2265003020
4­
Str
Forklifts
4.6
0.005078
0.002268
2267003020
LPG
 
Forklifts
79.2
0.000214
0.166358
2268003020
CNG
 
Forklifts
9.2
0.000016
0.005978
2270003020
Dsl
 
Forklifts
25.4
0.002688
0.026198
2265003010
4­
Str
Aerial
Lifts
8.0
0.001644
0.000630
2267003010
LPG­
Aerial
Lifts
4.2
0.000002
0.002068
2270003010
Dsl
 
Aerial
Lifts
8.2
0.000478
0.002318
2260003030
2­
Str
Sweepers/
Scrubbers
0.8
0.000034
0.000002
2265003030
4­
Str
Sweepers/
Scrubbers
4.6
0.001198
0.000474
2267003030
LPG­
Sweepers/
Scrubbers
1.4
0.000002
0.001480
2268003030
CNG­
Sweepers/
Scrubbers
0.0
0.000000
0.000000
2270003030
Dsl
 
Sweepers/
Scrubbers
8.4
0.001652
0.012374
2265003070
4­
Str
Terminal
Tractors
1.4
0.000602
0.000270
2267003070
LPG­
Terminal
Tractors
0.2
0.000002
0.000932
2268003070
CNG­
Terminal
Tractors
0.0
0.000000
0.000000
2260003040
2­
Str
Other
General
Industrial
Eqp
0.0
0.000000
0.000000
2265003040
4­
Str
Other
General
Industrial
Eqp
19.6
0.002040
0.000406
2267003040
LPG­
Other
General
Industrial
Eqp
0.4
0.000000
0.000440
2268003040
CNG­
Other
General
Industrial
Eqp
0.0
0.000000
0.000000
2270003040
Dsl
 
Other
General
Industrial
Eqp
16.6
0.001236
0.014798
2265003050
4­
Str
Other
Material
Handling
Eqp
0.4
0.000130
0.000025
2267003050
LPG­
Other
Material
Handling
Eqp
0.2
0.000000
0.000110
2270003050
Dsl
 
Other
Material
Handling
Eqp
1.2
0.000144
0.000862
TOTAL
­
194
0.017160
0.243998
*
Source
Classification
Code
Tier
3
Non­
Road
Equipment
Beginning
in
the
year
2006,
Tier
3
standards
will
start
to
be
phased
in
for
new
non­
road
diesel
equipment
of
50
horsepower
or
greater.
By
2008,
it
is
required
that
all
new
equipment
will
be
Tier
3
compliant.
(
USEPA,
1998)
The
non­
road
equipment
in
2007
will
reflect
phasing
in
of
Tier
3
standards
while
the
non­
road
equipment
in
2012
will
have
full
implementation
of
Tier
3
standards.
These
reductions
are
accounted
for
when
the
projections
are
being
developed
in
the
NONROAD
model.

Airport/
Military
Emissions
Airport
and
military
emission
data
cannot
be
projected
due
to
the
uncertainty
of
future
of
airport
and
military
bases
in
the
region.
Political
influence
or
unusual
circumstances,
such
as
wartime
situation,
may
increase
emissions
levels.
In
times
of
peace
or
poor
economy,
the
military
may
cut
back
causing
a
decrease
in
emissions.
Thus,
emissions
for
this
category
will
remain
the
same
for
2012
as
those
in
1999.
Also,
improvements
in
equipment
standards
are
expected
to
reduce
emissions.
Table
L­
5
details
the
airport/
military
emissions.
For
projection
purposes,
these
emissions
were
incorporated
into
the
non­
road
category
when
developing
the
non­
road
2007
and
2012
projections.
L­
13
Table
L­
5.
Airport/
Military
Emissions
for
the
San
Antonio
EAC
Region
County
1996
1999
2007
2012
VOC
NOx
VOC
NOx
VOC
NOx
VOC
NOx
Bexar
2.7
6.8
3.0
9.9
3.0
9.9
3.0
9.9
Comal
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Guadalupe
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Wilson
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Total
2.7
6.8
3.0
9.9
3.0
9.9
3.0
9.9
Construction
could
occur
at
the
San
Antonio
International
Airport
involving
the
tearing
down
of
one
terminal
and
the
construction
of
two
new
terminals.
The
emissions
from
this
activity
is
not
expected
to
be
more
than
150%
of
the
current
airport
emissions,
which
is
0.6
tons
per
day
of
VOC
and
1.8
tons
of
NOx
per
day.
It
is
important
to
note
that
the
emissions
generated
will
not
put
the
SAER
over
its
emission
budget
since
they
will
not
be
significant.
The
possibility
also
exists
that
the
construction
may
not
take
place
for
security
purposes
and
public
concerns
for
terrorist
activity.
Airport
equipment
would
most
likely
be
subject
to
emission
controls
in
the
future,
therefore
airport
emissions
most
likely
be
reduced
even
if
an
additional
terminal
is
constructed.

Area
Source
Emissions
The
2007
and
2012
area
source
categories
were
projected
using
two
different
methodologies.
For
some
categories,
the
Economic
Growth
Analysis
System
(
E­
GAS)
4.0
was
used
to
project
the
area
source
emission
to
2007
and
2012.
For
the
categories
that
are
based
on
population
emissions
factors,
growth
in
population
was
used.
The
U.
S.
Environmental
Protection
Agency
endorses
the
use
of
E­
GAS
when
emission
source
growth
estimates
are
not
available
by
facility
survey
or
other
local
source.
E­
GAS
generates
surrogate
growth
indicators
via
a
three­
tiered
modeling
system.
The
first
tier
includes
available
national
economic
forecasts
that
are
used
to
drive
the
regional
economic
models
of
the
second
tier.
The
third
tier
estimates
fuel
consumption,
physical
output,
and
VMT
based
on
the
second
tier's
regional
economic
forecasts.
(
Pechan,
2001)

Projecting
Emissions
with
the
EGAS
Model
The
Economic
Growth
Analysis
System
(
EGAS)
was
developed
by
the
EPA
to
provide
"
creditable
growth
factors"
for
projecting
future
emissions.
(
Pechan,
2001)
The
following
sections
will
describe
the
methodology
employed
to
develop
the
emission
estimates
as
well
as
any
state
or
federal
regulation
that
would
be
applicable
to
the
source
category.

EGAS
Version
4.0
was
used
to
obtain
growth
factors
for
some
area
sources
by
Source
Classification
Codes
(
SCCs).
These
growth
factors
are
ratios
of
the
projection
years'
(
2012)
activity
level
to
the
1996
activity
level;
1996
being
the
base
case.
(
Pechan,
2001)

Data
selected
to
run
EGAS
Version
4.0:
W5
Attainment
portion
of
Texas:
12
AACOG
counties
L­
14
Years
desired
for
growth
factors:
1999
&
2012
Output
Format:
SCC
form
Output
files
from
EGAS
Version
4.0:
Ind_
fuel.
scc:
SCCs
2102004000
­
2102007000
Com_
fuel.
scc:
SCCs
2103004000
­
2103007000
Res_
fuel.
scc:
SCCs
2104001000
­
2104008001
Other.
scc:
SCCs
2810001000
­
2810015000
Phy.
scc:
Contains
all
other
Area
Sources
not
listed
above
The
EGAS
model
outputs
three
emission
growth
factors.

To
figure
out
the
emissions
for
the
projection
year,
the
output
growth
factor
for
that
year
is
multiplied
by
the
emission
for
1996.
For
example,
if
the
output
growth
factor
for
2012
is
1.2323
for
SCC
xxxxxxxxxx,
and
the
VOC
emission
in
1996
was
2.0000
tons/
yr.
for
SCC
xxxxxxxxxx,
then
the
projected
2012
VOC
emission
for
that
SCC
equals
2.4646
tons/
yr.

=
X
=
2.4646
tons/
yr.

However,
the
1999
AACOG
NET
EI
was
the
most
recent
inventory
and,
thus,
was
used
as
the
base
case
in
the
development
of
the
2012
EI
for
AACOG.
The
2012
growth
factors
were
adjusted
based
on
the
factor
for
1996
(
which
is
always
1.0000),
1999,
and
2012
to
reflect
1999
as
the
base
Emission
Inventory.
Therefore,
the
2012
projected
emissions
were
figured
as
follows:

=
X
Control
Measures
in
2007
and
2012
Some
emission
sources
within
the
area
source
category
required
additional
calculations
to
account
for
federal
and
/
or
state
regulations
that
would
reduce
VOC
and/
or
NOx
emissions.
The
following
sections
describe
the
emission
source
and
its
regulation.

Degreasing
Emissions
The
1999
base
case
and
its
2007
projection
did
account
for
emission
reductions
from
degreasing
units
due
to
TAC
Chapter
106.
Chapter
106
affects
degreasing
units
throughout
Texas
as
specified
in
Control
of
Air
Pollution
From
Volatile
Organic
Compounds
§
115.412­
415.
These
reductions
were
applied
to
the
growth
of
emissions
between
1999
to
2007
and
1999
to
2012.
Chapter
115
requires
a
85%
reduction
of
VOC
emissions.
Therefore,
the
difference
in
emissions
from
1999
to
2007
and
1999
to
2012
are
reduced
by
85%
and
then
subtracted
from
the
original
2007
and
2012
emissions.
Table
L­
6
lists
the
degreasing
emissions
before
and
after
Chapter
106
was
accounted
for.
2012
VOC
Emissions
(
tons/
yr.)
1.2323
(
EGAS
Growth
Factor
for
2012)
2.0000
tons/
yr.
(
1996
Emissions)

2012
VOC
Emissions
(
tons/
yr.)
y.
yyyy
(
Adjusted
EGAS
Growth
Factor
1999
to
2012)
z.
zzzz
tons/
yr.
(
1999
Emissions)
L­
15
Table
L­
6.
Degreasing
Emissions
with
and
without
Chapter
106
Reductions
2007
VOC
(
ton/
day)
2012
VOC
(
ton/
day)
County
w/
o
Ch.
106
w/
Ch.
106
w/
o
Ch.
106
w/
Ch.
106
Bexar
14.027
9.745
16.468
10.111
Comal
0.849
0.590
0.997
0.612
Guadalupe
0.014
0.010
0.016
0.010
Wilson
0.200
0.139
0.235
0.144
On­
Board
Refueling
Vapor
Recovery
(
ORVR)
The
concept
of
ORVR
requires
a
system
within
an
automobile
that
captures
vapors
that
accumulate
in
the
fuel
tank,
as
well
as
fuel
vapors
generated
during
refueling.
ORVR
system
is
installed
on
the
vehicle
("
onboard")
as
compared
to
external
methods
(
known
as
Stage
II
vapor
recovery)
and
efficiently
collects
the
vapors
before
they
can
escape
into
the
atmosphere.
Current
ORVR
technologies
generally
consist
of
Activated
Carbon
Canisters
(
ACC)
which
absorb
the
hydrocarbons
(
HCs)
contained
in
the
vapors
forced
out
of
the
vehicle
while
refueling
is
occurring.

In
the
past,
vapor
recovery
systems
that
addressed
this
problem
have
been
termed
Stage
II
vapor
recovery
systems,
with
Balance
and
Vacuum
Assist
being
the
major
forms
of
Stage
II
systems.
With
the
introduction
of
ORVR,
the
vapors
do
not
leave
the
internal
system
of
the
vehicle.
Starting
in
2000,
all
2000
and
later
model
vehicles
will
have
ORVR
systems.
Light
duty
trucks
will
have
ORVR
phased
in
over
a
six­
year
period,
beginning
with
2001
models.
The
EPA
expects
ORVR
vehicles
to
be
in
wide
spread
use
by
2010.
Thus,
emission
benefits
from
this
control
would
be
increasingly
evident
in
2012
than
in
2007.
(
USEPA,
2003)
The
schedule
for
implementation
of
ORVR
is:

 
Automobiles:
40%
of
1998,
80%
of
1999,
and
100%
of
2000
and
beyond
models
will
be
equipped
with
ORVR.
 
"
Light
Duty
Trucks"
and
similar
vehicles:
40%
of
2001,
80%
of
2002,
and
100%
of
2003
and
beyond
models
will
be
equipped
with
ORVR.
 
"
Medium
Duty
Trucks"
and
similar
vehicles:
40%
of
2004,
80%
of
2005,
and
100%
of
2006
and
beyond
models
will
be
equipped
with
ORVR.
 
Heavy
Duty
Trucks
and
other
Vehicles:
At
this
time,
it
is
not
required
in
these
vehicles
(
Synergetic,
2004)

To
estimate
the
effect
of
ORVR,
the
NO
CLEAN
AIR
ACT
command
was
used
in
the
MOBILE6
command
file
to
model
vehicle
emissions
as
if
the
Federal
Clean
Air
Act
Amendments
of
1990
had
not
been
implemented.
The
MOBILE6
by
default
assumes
that
the
Clean
Air
Act
(
CAA)
Amendments
of
1990
did
occur
and
includes
a
number
of
vehicle
and
fuel
requirements
mandated
by
the
1990
Clean
Air
Act
Amendments
in
its
forecasts
and
analyses
of
future
year.
These
include
Tier1,
low
emissions
vehicle
(
LEV),
L­
16
and
Tier2
tailpipe
exhaust
emission
standards,
and
new
evaporative
emission
test
procedure
requirements.

For
the
study
of
effects
of
the
absence
of
CAA,
we
ran
two
2007
base
year
with
and
without
the
effects
of
CAA
and
calculated
the
differences
in
the
amounts
of
VOC
for
4
counties
in
the
SAER
and
for
each
days
of
the
week.
The
amounts
of
VOC
for
2007
for
each
modeled
day
and
for
each
county
in
our
study
area
were
higher
by
approximately
60%
when
the
CAA
requirements
in
MOBIE6
were
disabled.
This
reduction
percentage
was
reflected
in
the
emission
inventory
to
account
for
the
presence
of
the
effects
of
CAA
in
the
year
2007.
The
reductions
were
applied
to
the
Vehicle
Refueling
category
(
SCC
2501060100).

The
following
table
lists
the
reduction/
adjustment
values
for
VOC
emissions
for
each
county
in
San
Antonio
region.

Table
L­
7.
2007
ORVR
Reductions
for
the
SAER
by
Modeling
Episode
Days
Bexar
Comal
Guadalupe
Wilson
Episode
Day
Percent
Reduction
Tons
per
Day
Percent
Reduction
Tons
per
Day
Percent
Reduction
Tons
per
Day
Percent
Reduction
Tons
per
Day
Sept.
13
62.3%
7.26
62.7%
0.39
60.3%
0.41
59.7%
0.15
Sept.
14
62.3%
7.26
62.7%
0.39
60.3%
0.41
59.7%
0.15
Sept.
15
62.3%
7.26
62.7%
0.39
60.3%
0.41
59.7%
0.15
Sept.
16
62.3%
7.26
62.7%
0.39
60.3%
0.41
59.7%
0.15
Sept.
17
63.7%
7.42
63.5%
0.39
61.5%
0.42
60.7%
0.15
Sept.
18
64.3%
4.80
64.4%
0.26
62.0%
0.27
61.6%
0.10
Sept.
19
64.0%
2.43
63.7%
0.13
61.4%
0.14
61.1%
0.05
Sept.
20
62.3%
7.26
62.7%
0.39
60.3%
0.41
59.7%
0.15
The
table
below
details
the
emission
reductions
predicted
for
2007
and
2012.
As
listed
in
the
table,
an
emission
reduction
of
approximately
50%
for
each
county
in
the
San
Antonio
EAC
region
is
anticipated
between
2007
and
2012.
(
USEPA,
2004)

Table
L­
8.
Comparison
of
Average
Weekday
VOC
tons/
day
Emissions
from
Vehicle
Refueling
(
SCC
2501060100)
County
2007
2012
Difference
Bexar
4.36
2.13
48.7%
Comal
0.23
0.12
48.2%
Guadalupe
0.27
0.13
49.5%
Wilson
0.10
0.05
48.8%

Stage
I
Vapor
Recovery
Systems
As
a
tank
of
volatile
fuel
such
as
gasoline
is
gradually
emptied,
the
empty
space
will
be
occupied
by
vapors
of
the
fuel,
or
by
a
mixture
of
air
and
vapors,
if
an
inlet
air
vent
is
provided.
When
a
tanker
truck
delivers
fuel
to
a
gas
station,
the
new
fuel
entering
the
underground
tank
forces
accumulated
gasoline
vapors
out
of
the
tank
into
the
air.

Stage
I
vapor
recovery
systems
are
designed
to
control
the
escape
of
these
vapors,
and
can
achieve
a
98%
reduction
in
hydrocarbon
emissions
once
they
are
put
into
use.
The
vapors
are
captured
by
a
vapor
return
hose,
which
is
connected
to
the
storage
tank
and
L­
17
the
gasoline
delivery
truck.
Once
captured,
the
vapors
are
stored
in
a
vapor
cargo
department
in
the
gasoline
delivery
trucks
and
transported
to
the
refinery
for
recovery
or
incineration.
Figure
L­
1
illustrates
a
typical
stage
one
recovery
system.

Figure
L­
1.
Stage
I
Vapor
Recovery
System
There
are
two
types
of
Stage
I
vapor
recovery
systems,
the
dual
point
system
and
the
coaxial
system.
The
dual
point
system
has
two
parts,
a
drop
tube
and
a
vapor
recovery
tube
equipped
with
a
spring­
loaded
valve.
The
valve
prevents
vapors
from
escaping.
Dual
point
systems
also
consist
of
two
separate
tank
openings,
one
for
delivery
of
the
product
and
the
other
for
the
release
of
vapors.
The
following
figures
illustrate
a
top
filling
dual
point
system,
and
a
bottom
filling
dual
point
system.

Figure
L­
2.
Dual
Point
Top
Filling
System
L­
18
Figure
L­
3.
Dual
Point
Bottom
Filling
System
The
coaxial
system
is
comprised
of
a
tube
within
a
tube.
A
coaxial
spring
allows
the
drop
tube
to
depress
during
the
filling
of
the
tank
and
then
retract
upon
disconnection
of
the
fill
hose
to
create
a
tight
seal.
This
tight
seal
prevents
vapors
from
escaping.
The
coaxial
system
only
has
one
tank
opening.
The
opening
usually
has
a
four­
inch
diameter
product
fill
tube
inserted
into
the
tank
opening.
Gasoline
flows
through
the
inner
tube
and
the
vapors
are
displaced
through
the
space
in
between
the
inner
and
outer
tubes.
The
following
figure
provides
an
illustration
of
the
coaxial
system.

Figure
L­
4.
Coaxial
System
Currently,
Stage
I
systems
are
required
in
the
San
Antonio
EAC
Region
for
facilities
that
dispense
125,000
or
more
gallons/
month
of
gasoline
are
required
by
Control
of
Air
Pollution
From
Volatile
Organic
Compounds
§
115.229.
The
effectiveness
of
the
Stage
I
vapor
recovery
system
strategy
was
approximated
by
calculating
the
current
release
of
hydrocarbon
emissions
due
to
tank
unloading
for
the
San
Antonio
EAC
Region.
These
emissions
would
be
eliminated
if
all
of
the
gasoline
stations
in
the
region
were
required
to
have
Stage
I
vapor
recovery
system.
Table
L­
9
lists
the
2007
emissions
and
table
L­
10
lists
the
2012
emissions
from
the
tanker
unloading
category
in
the
SAER
counties.
L­
19
Table
L­
9.
2007
Emissions
from
Tanker
Unloading
in
San
Antonio
EAC
Region
(
AACOG,
2001)
County
VOC
tons/
day
Bexar
8.81
Comal
0.47
Guadalupe
0.52
Wilson
0.19
Total
SA
MSA
9.99
Table
L­
10.
2012
Emissions
from
Tanker
Unloading
in
San
Antonio
EAC
Region
County
VOC
tons/
day
Bexar
9.08
Comal
0.48
Guadalupe
0.53
Wilson
0.19
Total
SA
MSA
10.28
The
effectiveness
of
the
Stage
I
vapor
recovery
system
strategy
was
measured
by
calculating
the
current
release
of
hydrocarbon
emissions
due
to
tanker
truck
unloading
for
the
San
Antonio
EAC
Region.
Of
the
9.99
tons/
day
for
2007
and
the
10.28
tons/
day
VOC
emissions
presented
in
tables
L­
8
and
L­
9
respectively,
seventy
percent
of
those
emissions
totals
was
included
in
the
2007
and
2012
EIs.
This
adjustment
was
performed
based
on
data
analysis
in
a
TCEQ
study
for
95
counties
east
of
I­
35
(
TCEQ
1999).
The
results
of
this
study
are
displayed
in
table
L­
11.

Table
L­
11.
Emission
Reduction
Due
to
Stage
I
Implementation
in
the
95­
county
Region
Gasoline
Throughput
Gallons/
Month
Number
of
Gas
Stations
%
of
Total
Stations
VOC
Reductions
Tons/
Year
%
of
Total
VOC
Reductions
Less
than
10,000
1,607
18.6
0
0.0
10,000
 
25,000
2,436
28.3
1,210
11.8
25,000
 
50,000
2,287
26.5
2,480
24.1
50,000
 
125,000
1,599
18.6
3,510
34.1
Greater
than
125,000
691
8.0
3,090
30.0
Total
8,620
100.0
10,290
100.0
Source:
Texas
Commission
on
Environmental
Quality,
(
TCEQ
1999)

As
displayed
in
tables
L­
12
and
L­
13,
use
of
Stage
I
technology
by
facilities
that
have
125,000+
gallons
per
month
throughput
can
reduce
VOC
emissions
by
30%.
Removing
this
amount
of
reduction
from
the
total
projected
amount
of
VOC
emissions
in
the
SAER
from
tanker
truck
unloading
results
in
reducing
the
2007
projected
emissions
to
7.0
tons
per
day
and
2012
projected
estimates
to
7.19
tons
per
day.

The
following
table
indicates
the
exact
reduction/
adjustment
values
for
VOC
emissions
for
each
county
in
San
Antonio
region.
L­
20
Table
L­
12.
Stage
I
Emission
Reductions
(>
125,000
gal)
for
the
SAER
Counties,
2007
County
Percent
Reduction
Tons
per
Day
Reduction
Bexar
30%
2.64
Comal
30%
0.14
Guadalupe
30%
0.15
Wilson
30%
0.06
Total
­
2.99
Table
L­
13.
Stage
I
Emission
Reductions
(>
125,000
gal)
for
the
SAER
Counties,
2012
County
Percent
Reduction
Tons
per
Day
Reduction
Bexar
30%
2.72
Comal
30%
0.14
Guadalupe
30%
0.16
Wilson
30%
0.06
Total
­
3.08
Regulation
V
Rules
Affecting
Area
Source
The
only
category
affected
by
the
Regulation
V
Rules
in
the
AACOG
2012
Projected
Emissions
Inventory
is
Factory
Finished
Wood,
under
the
subtitle
of
Surface
Coatings.
This
category
has
a
99%
Rule
Effectiveness
(
RE),
thus
emissions
are
reduced
by
99%.
This
gives
Factory
Finished
Wood,
SCC
2401015000,
a
control
factor
of
0.01.
(
Mark,
2001)

Emissions
Projections
with
Population
Estimates
The
EGAS
model
supplied
growth
factors
were
used
to
project
of
all
area
source
emissions
except
Architectural
Surface
Coatings,
SCC:
2401001000,
and
Consumer/
Commercial
Solvents
which
include:
SCC:
2465100000
­
Personal
Care
Products
SCC:
2465200000
­
Household
Products
SCC:
2465400000
­
Automotive
After­
market
Products
SCC:
2440020000
­
Adhesives
and
Sealants
SCC:
2465600000
­
FIFRA
Regulated
Products
SCC:
2460520000
­
Coatings
and
related
products
SCC:
2460900000
­
Miscellaneous
Products
Instead,
the
emissions
from
these
emission
categories
were
projected
using
population
estimates.
Some
of
the
categories
also
had
emission
control
factors
applied
to
reflect
future
controls
that
would
reduce
product
emissions,
such
as
Rate
of
Progress
factors
for
Consumer
/
Commercial
Solvents.

Rate
of
Progress
Control
Factors
In
addition
to
projection
factors,
Rate
of
Progress
(
ROP)
control
factors
were
also
used
on
several
categories,
as
directed
by
TCEQ
(
Environ,
2001).
Table
L­
14
shows
applicable
ROP
control
factors
for
the
AACOG
2007
and
2012
emission
inventories.
These
control
factors
account
for
the
amount
of
emission
reductions
due
to
use
of
improved
techniques
and/
or
implementation
of
new
regulations.
L­
21
Table
L­
14.
Rate
of
Progress
Control
Factors
Category
SCC
Control
Factor
Leaking
Underground
Storage
Tanks
2660000000
0.0
Architectural
Coatings
2401001000
0.8
Traffic
Markings
2401008000
0.8
High­
Performance
Maintenance
2401100000
0.8
Other
Specific
Purpose
Coatings
2401200000
0.8
All
Solvent
Types
2465000000
0.8
Personal
Care
Solvents
2465100000
0.8
Household
Solvents
2465200000
0.8
TSDF's
2640000000
0.07
Automotive
Aftermarket
Coatings
2465400000
0.8
Adhesives
&
Sealants
2465600000
0.8
To
forecast
the
amount
of
emission
for
each
area
source
category,
the
emission
amount
for
each
category
in
1999
EI
was
enlarged
by
the
given
2007
and
a
2012
projection
factors.
The
results
were
then
factored
by
the
ROP
factors
to
account
for
improvements
in
applications
techniques
and
changes
in
regulations.
To
give
a
demonstration
of
this
procedure,
the
following
table,
which
is
prepared
for
the
2007
Bexar
County,
is
presented
in
this
appendix.
The
last
column
in
this
table
indicates
the
net
amount
of
change
between
before
and
after
application
of
ROP
factors.

Table
L­
15.
2007
Bexar
County
Area
Source
Emissions
impacted
by
ROP
Emission
Inventory
Category
Uncontrolled
2007
Tons/
Day
Controlled
2007
Tons/
Day
Reduction
Tons/
Day
Architectural
Coatings
9.73
7.78
1.95
Traffic
Markings
0.02
0.02
0.00
High­
Performance
Maintenance
3.14
2.51
0.63
Other
Spec.
Purpose
Coatings
2.41
1.93
0.48
Personal
Care
Solvents
3.84
3.07
0.77
Household
Solvents
2.54
2.03
0.51
Automotive
Solvents
1.64
1.31
0.33
Leaking
Underground
Tanks
0.19
0.00
0.19
The
above
procedure
was
repeated
for
each
county
in
the
SAER
region.
A
summary
of
the
results
of
these
factoring
is
shown
in
the
table
L­
16.
The
values
in
this
table
are
in
fact
the
reduction
amounts
that
are
resulted
after
the
application
of
ROP
factors.
L­
22
Table
L­
16.
2007
&
2012
ROP
Emission
Reductions
Bexar
County
Comal
County
Guadalupe
County
Wilson
County
Emission
Inventory
Category
2007
2012
2007
2012
2007
2012
2007
2012
Leaking
Underground
Storage
Tanks
0.194
0.215
0.004
0.005
0.030
0.034
0.003
0.003
Architectural
Coatings
1.946
1.916
0.109
0.122
0.120
0.122
0.045
0.043
Traffic
Markings
0.004
0.004
0.001
0.001
0.001
0.002
0.000
0.000
High­
Performance
Maintenance
0.628
0.714
0.033
0.038
0.037
0.042
0.013
0.015
Other
Specified
Purpose
Coatings
0.482
0.500
0.026
0.027
0.028
0.029
0.010
0.011
Personal
Care
Solvents
0.767
0.850
0.045
0.054
0.047
0.054
0.018
0.019
Household
Solvents
0.508
0.563
0.030
0.036
0.031
0.036
0.012
0.013
Automotive
Solvents
0.328
0.364
0.019
0.023
0.020
0.023
0.008
0.008
Total
4.856
5.126
0.266
0.304
0.316
0.341
0.109
0.112
Biogenic
Source
Emissions
Biogenic
data
for
the
2007
and
2012
projected
emission
inventory
remained
unchanged
from
the
1999
base
case
emissions
in
accordance
with
EPA
recommendations.
Table
L­
17
details
the
biogenic
emissions
for
the
SAER.

Table
L­
17.
Biogenic
Emissions
for
the
San
Antonio
EAC
Region
1996
1999
2007
2012
County
VOC
NOx
VOC
NOx
VOC
NOx
VOC
NOx
Bexar
60.1
5.0
60.1
5.0
60.1
5.0
60.1
5.0
Comal
56.5
1.5
56.5
1.5
56.5
1.5
56.5
1.5
Guadalupe
83.6
7.5
83.6
7.5
83.6
7.5
83.6
7.5
Wilson
62.8
6.5
62.8
6.5
62.8
6.5
62.8
6.5
Total
263.0
20.6
263.0
20.6
263.0
20.6
263.0
20.6
Point
Source
Emissions
Point
source
emissions
were
gathered
from
a
variety
of
sources.
City
Public
Service
(
CPS)
provided
the
2007
and
2012
emission
figures
for
the
CPS
power
plants.
Also
accounted
for
were
the
new
Tessman
Road
Landfill
Gas
Power
Station,
Guadalupe
Power
Plants,
and
Toyota
Manufacturing
plant.
The
emission
estimates
for
these
additional
sources
are
detailed
in
the
following
tables.

Tessman
Road
Landfill
Gas
Power
Station
The
proposed
Tessman
Road
power
station
is
located
in
Bexar
County
near
Converse,
TX.
The
station
will
feature
six
Deutz
TBG
620
V16
engines,
producing
electricity
from
L­
23
methane
and
other
landfill
gases.
This
plant
will
emit
0.179
ton
of
NOx
and
0.049
ton
of
VOC
in
both
2007
and
2012.

Guadalupe
County
Power
Plants
Two
natural
gas
powered
electrical
generating
facilities
are
slated
for
completion
and
operation
prior
to
2007.
Table
L­
18
details
the
projected
emissions
from
the
point
source
for
2007
and
2012.

Table
L­
18.
Projected
2007
and
2012
Emissions
for
the
Natural
Gas
Power
Plant
in
Guadalupe
County
Projected
Emissions
(
tons/
day)
Facility
ID
SIC
Stack
ID
Stack
Height
(
Meters)
NOx
VOC
100
39.6
0.948
0.060
300
39.6
0.948
0.060
400
39.6
0.948
0.060
Guadalupe
Power
Partners
1000
4911
500
39.6
0.948
0.060
100
39.6
1.249
0.064
200
39.6
1.249
0.064
Rio
Nogales
Power
Projects
LP
1001
4911
300
39.6
1.249
0.064
Toyota
Manufacturing
Plant
Toyota
Motor
Manufacturer
North
America
(
TMMNA)
is
currently
negotiating
the
building
of
an
auto­
production
assembly
plant
in
south
Bexar
County.
Toyota
provided
emissions
estimates
of
the
anticipated
pollutants
produced
by
this
plant
at
the
start
of
production
and
are
described
in
the
following
paragraphs.
Table
L­
19
lists
the
emission
estimates
for
2007
and
2012.

The
plant
is
to
be
built
in
2
phases.

Phase
1:
Phase
1
operation
has
a
Start
of
Production
(
SOP)
date
of
2006.
Emissions
for
2007
are
projected
at
5.00
tons/
day
of
VOC
and
0.34
tons/
day
of
NOx.

Phase
2:
Phase
2
operation
has
a
SOP
date
of
2008­
2010.
Emissions
estimates
in
2012
include
both
phases
of
production.
Phase
1
and
2
combined
is
projected
to
emit
10.00
tons/
day
of
VOC
and
0.68
tons/
day
of
NOx.

VOC
emissions
will
be
mainly
from
painting
cleaning,
sealers,
adhesives,
&
natural
gas
combustion.
NOx
emissions
will
be
mainly
from
natural
gas
boilers,
space
heaters,
miscellaneous
process
heating.

Table
L­
19.
Point
Source
Emissions
from
Toyota
Plant,
Bexar
County
2007
&
2012
Year
&
Phase
VOC
(
tpd)
NOx
(
tpd)

2007
Emissions,
Phase
1
5.00
0.34
2012
Emissions,
Phase
1
and
2
10.00
0.68
L­
24
Electric
Generating
Units
(
EGU)
and
Non­
electric
Generating
Units
(
NEGU)
TCEQ
provided
AACOG
with
electric
generating
unit
(
EGU)
and
non­
electric
generating
unit
(
NEGU)
files
for
2007.
These
emissions
were
left
unchanged
2012.
(
Thomas,
2003),
(
TCEQ,
2003).
The
emission
estimates
are
from
the
2007
TEXAQS
2000
projection,
which
was
used
in
the
photochemical
model.
The
estimates
do
not
reflect
growth
or
additional
controls
between
2007
and
2012.
These
files,
used
in
the
Houston
SIP,
were
updated
with
local
data
when
available.
Table
L­
20
lists
NEGU,
non­
CPS
EGU
point,
and
minor
point
source
emissions
source
emissions.

Table
L­
20.
Non­
CPS
EGU
and
NEGU
emissions
for
2007
and
2012
1999
2007
2012
County
NOx
VOC
NOx
VOC
NOx
VOC
Bexar
16.86
4.55
17.89
5.99
17.89
5.99
Comal
12.16
0.34
13.77
0.52
13.77
0.52
Guadalupe
0.51
0.45
8.07
1.10
8.07
1.10
Wilson
0.00
0.07
0.00
0.07
0.00
0.07
City
Public
Service
City
Public
Service
provided
projected
emissions
for
2007
and
2012
for
the
CPS
power
plants
in
the
area.
(
Fulton,
2003)
The
emissions
reflect
average
ozone
season
days
in
September.
These
emissions
include
a
new
coal
fired
power
plant
scheduled
to
go
online
in
2009.
Table
L­
21
gives
the
predicted
weekday
emissions
per
power
plant
for
2007
and
2012.

Table
L­
21.
Projected
CPS
Emissions
from
2007
to
2012
2007
2012
CPS
Plant
VOC
NOx
VOC
NOx
CPS
­
O.
W.
Sommers
(
OWS)
­
Total
0.27
6.28
0.00
0.00
CPS
­
J.
T.
Deely
(
JTD)
­
Total
0.34
15.62
0.67
10.03
CPS
­
J.
K.
Spruce
(
JKS)
­
Total
0.05
10.85
0.15
12.89
CPs
­
V.
H.
Braunig
(
VHB)
­
Total
0.05
1.04
0.09
0.00
CPS
­
A.
Von
Rosenberg
Unit
1
(
VHB
4A)
0.07
1.05
0.14
1.32
TOTAL
0.78
34.84
1.01
24.24
Legislative
Actions
In
1999,
the
Texas
Legislature
passed
two
laws
governing
emissions
for
point
sources
in
Texas.
The
2012
emission
inventory
from
City
Public
Service
accounts
for
Senate
Bill
7,
which
limits
NOx
emissions
from
grand­
fathered
electric
generating
facilities
in
central
and
eastern
Texas
and
Senate
Bill
766,
which
increases
emissions
fees
on
grandfathered
non­
electric
generating
facilities.
(
TCEQ,
2004)

Senate
Bill
7
The
electric
utility
deregulation
bill
requires
reductions
in
emissions
levels
of
nitrogen
oxides
and
sulfur
dioxide
from
grandfathered
electric
utility
units.
The
NOx
rate,
in
pounds
of
NOx
per
MM
Btu
(
lbs.
NOx/
MM
Btu)
is
specified
by
SB
7
and
is
based
on
the
L­
25
location
of
the
EGF.
This
applies
only
to
grand­
fathered
EGFs
and
is
blank
for
permitted
EGFs.

Senate
Bill
766
Senate
Bill
766
has
two
major
parts.
The
first
part
redefines
the
current
permitting
hierarchy
according
to
the
significance
of
emissions
into
De
Minimis,
Exemptions,
Permits
by
Rule,
Standard
Permits
and
regular
permits.
The
second
part
created
three
new
types
of
permits:
Voluntary
Emission
Reduction
Permit
(
VERP),
Multiplant
Permit,
and
Grandfather
Utility
Permit.
Senate
Bill
7
provides
additional
guidance
to
the
TCEQ
regarding
the
issuance
of
Grandfathered
Utility
Permits
and
allowances
as
stipulated
in
General
Air
Quality
Rules
§
101.333.

On
Road
Source
Emissions
On
road
emissions
were
provided
by
the
Texas
Transportation
Institute
(
TTI).
The
emissions
are
average
weekday
emissions
with
no
adjustments
and
are
from
the
modeling
inventory.

The
emission
estimates
in
1996
includes
the
1995
on
road
estimates
updated
with
MOBILE6,
version
2.
There
were
no
Mobile6
emission
estimates
for
1996
so
the
closest
year
was
used.

TREND
ANALYSIS
As
mentioned
in
previous
sections,
due
to
the
federal,
state,
and
local
emission
control
policies,
the
downward
trend
of
emissions
will
be
sustained
until
the
year
2012,
despite
predicted
growth
in
population
size
and
economic
activities.
The
following
figure,
which
was
generated
based
on
the
available
and
forecasted
data,
depicts
this
trend.
The
anthropogenic
emissions
are
caused
by
human's
activities
and
are
separated
from
those
occurring
naturally.
L­
26
Figure
L­
5.
Trend
Line
Analysis
of
VOC
and
NOx
Emissions
in
the
SAER,
1996,
1999,
2007,
2012
*
note
1996
estimates
included
using
version
two
of
the
1995
Mobile6
inventory
As
indicated
in
figure
L­
5,
the
tonnage
of
VOC
and
NOx
emissions
is
projected
to
decrease
from
1996
to
2012.
Between
1999
and
2007,
an
overall
reduction
of
28%
of
NOx
emissions
and
23%
reduction
in
VOC
emissions
are
predicted.
Between
2007
and
2012,
additional
reductions
of
22%
in
NOx
emissions
and
7%
in
VOC
emissions
can
be
expected.
The
reductions
are
as
a
result
of
control
strategies
enforced
by
the
USEPA
and
TCEQ
and
provides
improved
air
quality
is
in
the
future
of
the
San
Antonio
EAC
region.

Table
L­
23
details
and
compares
emission
totals
for
the
four
EAC
counties
in
all
emission
source
categories.
These
estimates
are
slight
different
then
the
photochemical
modeling
inventory
because
the
model
is
based
on
day
specific
inventories.
The
inventory
used
in
the
Trend
Line
analysis
is
for
and
average
ozone
season
day.
Also,
certain
emission
categories
may
be
affected
by
seasonal
adjustments.
For
example,
there
are
no
fertilizer
emissions
in
the
model,
while
these
tables
do
include
fertilizer
emissions.
Fertilizer
is
not
applied
during
September
in
the
SAER.

The
total
emissions
in
the
SAER
indicate
a
decrease
in
emissions
for
VOCs
in
area
sources,
NOx
emissions
in
point
sources,
and
both
ozone
precursor
emissions
in
mobile
sources
and
non­
road
sources.
These
observable
trends
of
increasing
emissions
in
some
sources
and
the
decreasing
of
emissions
in
other
sources
counterbalance
each
other
and
indicate
that
the
SAER
is
projected
to
remain
in
attainment
in
2012.
The
0
50
100
150
200
250
300
350
1996*
1999
2007
2012
Emission
Inventory
Years
Tons/
Day
Anthropgenic
NOx
Anthropgenic
VOC
L­
27
following
subsections
describe
the
individual
emission
source
categories
and
their
emission
trends.

Area
Sources
Area
source
emissions
in
2012
are
lower
than
1999
area
source
emissions.
This
is
indicative
of
the
effects
federal
and
state
measures
have
on
the
San
Antonio's
regional
air
quality.
However,
trends
within
individual
counties
in
the
SAER
demonstrate
peculiar
activity.

For
Bexar,
Comal,
and
Guadalupe
counties,
area
source
VOC
emissions
decrease
from
1999
to
2007
but
then
increase
from
2007
to
2012.
In
2007,
larger
decreases
of
VOC
emissions
from
state
and
federal
strategy
implementation
are
anticipated
than
the
total
projected
VOC
increase
due
to
population
and
source
growth.
In
2012,
larger
increases
in
VOC
emissions
than
strategy
induced
VOC
reduction
is
expected.

Originally,
the
projected
2007
VOC
emission
estimate
for
Bexar
County
was
83.4
tons
per
day.
After
taking
into
account
state
and
federal
regulations
such
as
Stage
I
vapor
recovery
at
stations
that
throughput
125,000
gallons/
month,
onboard
refueling
vapor
recovery,
and
state
mandated
degreasing
controls,
total
VOC
emissions
for
Bexar
County
is
69.2
tons
per
day.

For
2012,
area
VOC
emissions
are
projected
to
increase
7
tons.
Therefore,
before
taking
into
account
additional
emission
reductions
due
to
strategy
implementation
in
2012,
2012,
area
sources
were
projected
at
76.2
tons
per
day
(
69.2
tons
+
7
tons).
An
emission
reduction
of
4.8
tons
per
day
due
to
implemented
control
measures
was
then
applied
thus
reducing
emissions
to
71.4
tons
per
day
(
76.2
tons
­
4.8
tons).

The
same
occurrences
can
be
noted
in
Comal
and
Guadalupe
area
source
emissions.
The
reductions
were
not
large
enough
to
offset
the
projected
increases
in
2012.
Emissions
in
Wilson
County
reflected
no
activity
and
remained
constant.

Point
Sources
In
Bexar
County,
point
source
VOC
emissions
are
expected
to
nearly
triple
from
1999
to
2012
due
to
emergence
of
additional
point
sources
within
the
county,
such
as
the
Toyota
Manufacturing
Plant
and
the
Tessman
Landfill
Gas
Power
Plant.
NOx
emissions,
however,
decrease
from
1999
to
2012,
which
would
be
reflective
of
updated
emission
controls
on
local
point
sources.
VOC
emissions
remained
constant
in
Comal
County
while
NOx
emissions
slightly
increased.
Guadalupe
County
VOC
and
NOx
emissions
increased
due
to
the
development
of
a
new
power
plant
within
the
county.
Wilson
County
VOC
emissions
increased
slightly
but
their
NOx
emissions
did
not
significantly
change.

On
Road
Sources
Both
VOC
and
NOx
emissions
decrease
from
1999
to
2012
in
all
SAER
counties.

Non
Road
Sources
Reductions
in
VOC
and
NOx
emissions
can
be
noted
in
all
SAER
counties.
These
reductions
can
be
attributed
to
improved
emission
control
technologies
as
required
by
various
federal
standards.
These
emissions
also
reflect
airport
and
military
emissions
in
the
SAER.
L­
28
The
resulting
emission
estimates
displayed
on
table
L­
22
indicate
that
the
San
Antonio
EAC
Region
is
projected
to
maintain
the
8­
hour
ozone
NAAQS
five
years
beyond
the
2007
attainment
date.
It
is
important
to
note
that
these
emission
estimates
do
not
reflect
the
additional
emission
reduction
resulting
from
the
implementation
of
the
locally
selected
clean
air
measures
submitted
as
part
of
San
Antonio's
Clean
Air
Plan.
L­
29
Tons
per
Day
Emission
1996
1999
2007
2012
San
Antonio
Early
Action
Compact
Region
VOC
NOx
VOC
NOx
VOC
NOx
VOC
NOx
Bexar
78.3
2.4
73.4
4.7
69.2
5.0
71.4
5.2
Comal
4.4
0.1
3.7
0.3
3.4
0.5
3.6
0.5
Guadalupe
6.1
0.3
5.4
0.9
5.2
1.7
5.4
1.8
Wilson
2.6
0.4
2.7
0.9
2.7
1.8
2.7
2.0
Area
Sources
Total
91.4
3.3
85.2
6.8
80.5
9.0
83.1
9.5
Bexar
7.0
64.3
6.3
83.9
11.8
53.2
17.0
43.0
Comal
0.4
8.2
0.5
12.2
0.5
13.8
0.5
13.8
Guadalupe
0.4
0.3
0.5
0.5
1.1
8.1
1.1
8.1
Wilson
0.0
0.0
0.01
0.004
0.1
0.004
0.1
0.004
Point
Sources
Total
7.8
72.8
7.3
96.6
13.5
75.1
18.7
64.9
Bexar
106.6
122.39
82.1
121.87
45.5
69.1
33.7
41.4
Comal
6.8
10.4
6.2
11.7
3.9
7.1
3
4.3
Guadalupe
6.6
10
5.6
10.5
3.4
6.5
2.6
3.9
Wilson
1.9
1.9
1.6
1.9
1
1.3
0.8
0.8
On
Road
Sources
Total
121.9
144.69
95.5
145.97
53.8
84
40.1
50.4
Bexar
54.3
55.2
36.3
36.4
25.6
36.3
21.0
32.9
Comal
9.8
3.5
3.4
2.6
2.1
3.4
1.8
3.3
Guadalupe
4.3
4.4
4.1
2.3
1.7
3.3
1.4
3.3
Wilson
1.4
4.1
1.0
0.7
0.6
1.0
0.5
0.9
Non
Road
Sources
Total
69.9
67.2
45.7
42.0
30.0
44.0
24.7
40.4
Table
L­
22.
Anthropogenic
Emission
Trend
within
the
San
Antonio
Early
Action
Compact
Region
L­
30
CONCLUSION
Developing
the
2012
projections
for
various
emission
sources
required
the
use
of
various
methods
and
models.
Emissions
for
sources
such
as
non­
road
and
on
road
source
needed
to
reflect
the
implementation
of
various
control
measures
aimed
at
reducing
ozone
precursors.
When
developing
the
Maintenance
Year
Emission
Inventory,
incorporating
projected
emissions
from
future
sources
such
as
the
automobile
manufacturing
plants
or
new
power
plants
is
important.
Taking
into
account
these
variables
enables
air
quality
planners
to
confidently
develop
air
quality
plans
aimed
at
reducing
emissions.

The
Clean
Air
Plan
for
the
SAER
is
directed
to
achieve
the
8­
hour
standard
by
December
2007.
Maintaining
the
8­
hour
standard
five
years
beyond
the
attainment
date
will
be
achieved
through
an
annual
review
of
growth
as
required
in
the
EAC
protocol.

As
discussed
in
the
Executive
Summary,
the
Maintenance
for
Growth
analysis
performed
by
AACOG
has
several
stages
or
components.
 
Current
Analysis:
This
Maintenance
for
Growth
analysis
is
an
updated
and
expanded
Trend
Analysis,
first
published
September
30,
2003
as
an
EAC
milestone.
This
appendix
analyzes
the
emissions
inventories
from
1996
and
1999
and
projects
emissions
to
2007
and
2012.
These
future
year
projections
encompass
all
relevant
changes
affecting
future
emissions,
including
revised
or
new
federal,
state,
and
local
rules
and
any
new
practices
that
would
result
in
changes
to
future
year
emissions
inventories.
As
a
separate
document,
the
Trend
Analysis
itself
is
updated
once
more,
and
is
due
as
an
updated
milestone
/
deliverable
in
the
EAC
by
September
30,
2005.
 
Continuing
Planning
Process:
The
assumptions
underlying
this
analysis
will
be
reviewed
annually
throughout
the
term
of
the
EAC
(
through
2007).
Changes
in
assumptions
will
be
incorporated
annually
into
an
updated
Maintenance
for
Growth
analysis
and
reported
as
a
component
of
the
Semi­
Annual
Updates.
The
current
analysis
will
next
be
updated
and
reported
in
the
December
2004
Semi­
Annual
Update.
 
New
Strategy
Requirements:
In
the
event
the
annual
analysis
of
emission
trends
and
control
strategies
fails
to
maintain
attainment
standards,
appropriate
planning
and
implementation
of
additional
clean
air
measures
will
result.

Current
Analysis
The
bulk
of
this
Appendix
is
devoted
to
the
Current
Analysis
outlined
above,
according
to
which
our
present
projections
suggest
continued
attainment
of
the
8­
hour
average
ozone
NAAQS
through
2012.
This
is
based
on
the
most­
currently
available
data
as
of
March
2004.

Continuing
Planning
Process
Various
stages
of
planning
and
verification
must
be
performed
on
a
continual
basis
to
ensure
timely
emission
reductions
for
the
region
to
maintain
air
quality
standards.
The
impacts
of
new
point
source
related
emissions,
economic
and
population
growth,
and
the
implementation
of
new
control
strategies
are
evaluated
during
the
air
quality
modeling
process.
Analyzing
their
effect
on
ambient
ozone
levels
will
be
essential
in
ensuring
the
maintenance
of
attainment.

AACOG
staff
will
analyze
air
quality
and
related
data
and
perform
necessary
modeling
updates
and
modeling
assumption
verification
annually.
In
the
event
that
updated
emission
inventories,
updates
in
any
photochemical
model
inputs,
or
corrections
to
L­
31
earlier
modeling
assumptions
are
created
and
available,
the
modeling
scenarios
used
to
demonstrate
attainment
for
the
SAER
will
be
brought
up
to
date.
Modeling
updates
will
be
performed
in
accordance
with
state
and
federal
guidelines.

Ongoing
Updates
Gathering,
updating,
and
verifying
data
is
part
of
an
ongoing
process
between
the
Texas
Commission
on
Environmental
Quality,
the
US
Environmental
Protection
Agency,
and
the
Alamo
Area
Council
of
Governments.
The
updating
and
verification
process
will
continue
to
occur
in
the
context
of
the
Joint
Near
Nonattainment
Area
meetings
held
by
air
quality
planning
technical
staff
representing
TCEQ,
and
the
San
Antonio,
Victoria,
Corpus
Christi,
Austin
and
the
Tyler­
Longview
areas,
or
other
appropriate
venue
(
technical
meetings
with
TCEQ
and
/
or
EPA,
etc.).
Joint
Near
Nonattainment
Area
meetings
are
held
at
least
as
often
as
every
three
months.
They
were
established
as
a
forum
for
discussion
of
new
technology,
new
program
and
planning
requirements
under
state
programs,
progress
on
and
cooperation
in
attainment
of
air
quality
goals,
as
well
as
discussion
of
updates
to
modeling
input
and
modeling
technique.
AACOG
frequently
attends
other
technical
modeling
meetings
hosted
by
the
TCEQ,
EPA
and
other
agencies,
which
provides
greater
opportunity
for
information
update
exchanges.
In
addition,
AACOG
staff
attends
regularly
scheduled
monthly
technical
meetings
of
the
local
San
Antonio
/
Bexar
County
Metropolitan
Planning
Organization
(
MPO),
allowing
AACOG
staff
the
most
recent
transportation
planning
information.
AACOG
provides
all
air
quality
analysis
for
the
local
MPO
transportation
projects.
All
local
transportation
planning
updates
to
the
modeling
inputs
will
be
incorporated
as
they
occur,
and
their
impacts
analyzed.

Reporting
of
modeling
updates
and
modeling
assumption
verification
will
be
reported
in
the
Semi­
Annual
Reports
written
by
the
AACOG.
These
reports
are
due
on
an
ongoing
six­
month
cycle
ending
December
31
and
June
30
of
each
year
of
the
Early
Action
Compact,
ending
December
31,
2007.
These
reports
will
specifically
address,
at
a
minimum,
 
all
relevant
actual
new
point
sources;
 
impacts
from
potential
new
source
growth;
and
 
future
transportation
patterns
and
their
impact
on
air
quality
in
a
manner
that
is
consistent
with
the
most
current
adopted
Long
Term
Transportation
Plan
and
most
current
trend
and
projections
of
local
motor
vehicle
emissions.

Throughout
the
continuing
planning
process,
the
air
quality
impact
on
the
region's
ozone
levels
imposed
by
transportation
patterns
will
be
evaluated
and
assessed
by
technical
staff
of
various
local,
regional,
state,
and
federal
offices.
The
ongoing
technical
collaboration
between
AACOG
and
the
local
MPO
is
the
central
conduit
such
that
updated
transportation
planning
becomes
integrated
in
air
quality
planning.
These
cooperative
relations
will
assist
in
maintaining
the
8­
hour
ozone
standard
by
the
technical
assistance
provided
by
each
agency
and
in
the
event
additional
planning
is
necessary.

New
Strategy
Requirements
The
annual
reviews
of
growth,
including
the
updates
and
the
continuing
planning
processes
reported
in
the
Semi­
Annual
Updates
will
provide
air
quality
planners
the
insight
necessary
to
ensure
attainment
of
the
8­
hour
standard
up
to
2012.
The
extensive
clean
air
strategy
modeling
performed
by
AACOG
staff
will
facilitate
the
L­
32
planning
if
the
continuous
review
process
indicates
additional
measures
should
be
considered.

If
at
any
time
the
review
of
growth
demonstrates
that
adopted
control
measures
are
inadequate
to
address
growth
in
emissions,
additional
measures
will
be
added
to
the
plan.
If
additional
control
measures
for
2007
attainment
are
suggested
as
being
necessary
through
a
review
of
growth,
they
will
be
verified
using
the
current
attainment
demonstration
photochemical
model
and
adopted
according
to
the
public
review
process
overseen
by
the
Air
Improvement
Resources
Committee.
If
additional
control
measures
for
2012
attainment
are
suggested
as
being
necessary
through
a
review
of
growth,
AACOG
staff
will
work
with
the
TCEQ
and
EPA
to
analyze
control
strategies
based
on
then­
currently
available
photochemical
models.
Appropriate
control
strategies
will
be
adopted
according
to
the
public
review
process
overseen
by
the
Air
Improvement
Resources
Committee.
L­
33
References:

Texas
Water
Development
Board
(
TWDB),
2000.
"
Population
Projections
1990­
2050:
Most
likely
Scenario."
Austin,
TX.
Available
online:
http://
www.
twdb.
state.
tx.
us/
data/
popwaterdemand/
countypopulation.
htm.

United
States
Environmental
Protection
Agency
(
USEPA),
1997.
"
Emission
Factors
for
Locomotives."
Ann
Arbor,
MI.
Available
online:
http://
www.
epa.
gov/
otaq/
regs/
nonroad/
locomotv/
frm/
42097051.
pdf
United
States
Environmental
Protection
Agency
(
USEPA),
1998.
"
Regulatory
Announcement:
New
Emission
Standards
for
Non
Road
Diesel
Engines."
Ann
Arbor,
MI.
Available
online:
http://
www.
epa.
gov/
otaq/
regs/
nonroad/
equip­
hd/
frm1998/
f98034.
htm
Pechan,
2001.
EGAS
4.0
Reference
Manual.
Durham,
NC.
Available
online:
http://
www.
epa.
gov/
ttn/
chief/
emch/
projection/
egas40/
ref_
man_
4.
pdf
Control
of
Air
Pollution
From
Volatile
Organic
Compounds,
30
T.
A.
C.
§
115.412­
415
(
1999).
Available
online:
http://
www.
tnrcc.
state.
tx.
us/
oprd/
rules/
pdflib/
115_
ind.
pdf
Synergetic
Technologies,
Inc.
Available
online:
http://
www.
stationwatch.
com/
swfaq/
orvr_
faq.
htm#
FAQ001
Last
accessed:
March
21,
2004.

U.
S.
Environmental
Protection
Agency,
February
2004.
"
Commonly
Asked
Questions
About
ORVR."
Available
online:
http://
www.
epa.
gov/
otaq/
regs/
ldhwy
onboard/
orvrq­
a.
txt
Accessed
November
2003.

Control
of
Air
Pollution
From
Volatile
Organic
Compounds,
30
T.
A.
C.
§
115.221­
229
(
1999).
Available
online:
http://
www.
tnrcc.
state.
tx.
us/
oprd/
rules/
pdflib/
115c.
pdf
Mack,
Eddie,
August
2001.
"
Regulations
Affecting
Area
Sources
in
1999."
Last
revised
8/
28/
01.

Environ
International
Corporation,
2001.
"
Future­
Year
Ozone
Modeling
of
the
Austin,
Texas
Region:
Draft
Final
Report."
Novato,
Ca.

Thomas,
Ron,
May
2003.
Email:
"
Re:
DFW
1999
Files
­
TNRCC
processing
of
Texas
hourly
egu.
0913_
2099
point
sources
for
2007."
Austin,
TX.
Available:
ftp://
ftp.
tceq.
state.
tx.
us/
pub/
OEPAA/
TAD/
Modeling/
HGAQSE/
Modeling/
EI
Texas
Commission
on
Environmental
Quality
(
TCEQ),
2003.
"
TNRCC
processing
of
Texas
NonEGU
point
sources
for
2007."
Austin,
TX.
Available:
ftp://
ftp.
tceq.
state.
tx.
us/
pub/
OEPAA/
TAD/
Modeling/
HGAQSE/
Modeling
Fulton,
Joe,
April
2003.
"
1999,
2007,
2012
CPS
power
plant
emissions."
San
Antonio,
TX.

Texas
Commission
on
Environmental
Quality
(
TCEQ),
February
2004.
"
Permitting
Grandfathered
Facilities."
Austin,
TX.
Available
online:
http://
www.
tnrcc.
state.
tx.
us/
grandfathered/
background
L­
34
Texas
Commission
on
Environmental
Quality
(
TCEQ),
1999.
"
Chapter
115
­
Control
of
Air
Pollution
From
Volatile
Organic
Compounds,
Rule
Log
No.
98028­
115­
AI."

General
Air
Quality
Rules,
30
T.
A.
C.
§
101.333
(
1999).
Available
online:
http://
www.
tnrcc.
state.
tx.
us/
oprd/
rules/
pdflib/
101h.
pdf
