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TCEQ Acronyms and Other Abbreviations

Shortened versions of terms and titles most used by TCEQ staff.

A | B | C | D | E | F | G | H | I |J | K | L | M
N | O | P | Q | R| S | T | U | V | W | X | Y | Z


Numbers

305(b)
Section of the Clean Water Act that calls for a biennial assessment of surface water Quality in Texas
305(d)
Section of Clean Water Act that includes impaired water bodies in category 5
40 CFR 60
Title 40, Code of Federal Regulations, Part 60

Symbols

°C
temperature degrees Celsius
°F
temperature degrees Fahrenheit
°K
temperature degrees Kelvin

A A A A A A A A A A A A A A A A A A A A

AA
atomic absorption
AAS
atomic absorption spectrometry
AASHTO
American Association of State Highway and Transportation Officials
AC
Agency Communications or alternating current
ACC
annual compliance certification
ACFM
actual cubic feet per minute
ACGIH
American Conference of Governmental Industrial Hygienists
ACI
air–curtain incinerator or animal–carcass incinerator
ACIN
abatement control identification number
ACPS
application compliance plan and schedule
ACT
alternative control technique
ADA
Americans with Disabilities Act
ADMT
Air Dispersion Modeling Team
ADR
Alternative Dispute Resolution or alternate designated representative
ADSO
additional-duty safety officer
ADT
average daily traffic
AER
allowable emission rate
AERCO
Area Emission Reduction Credit Organization
AEMR
applicant emission unit monitoring requirements
AFJ
agreed final judgment
AFR
air-fuel ratio or annual financial report
AIRPR
Air Policy and Regulations
AIRS
Aerometric Information Retrieval System
ALAPCO
Association of Local Air Pollution Control Officials
ALPM
actual liters per minute
AMOC
alternate methods of control
AOI
area of impact
AOL
alternate opacity limit
AOR
alternate opacity request
AOS
alternative operating scenario
AP-42
compilation of air pollutant emission factors
APA
Administrative Procedures Act
APD
Air Permits Division
API
American Petroleum Institute
APIRT
Air Permits Initial Review Team
APTRA
Administrative Procedures and Texas Register Act
APWL
Air Pollutant Watch List
AQ
Air Quality
AQAC
Air Quality Advisory Committee
AQCR
air quality control region
AQMP
Air Quality Modeling Procedures
AQP
Air Quality Planning
AQP&A
Air Quality Planning and Assessment
ARACT
alternate RACT
ARD
acid rain data
AREACIRC
co-located circular area source
ARP
Acid Rain Program
ARPA
Agricultural Resources Protection Authority
As
arsenic
ASA
air stagnation advisory
ASAE
American Society of Agricultural Engineers
ASC
Administrative Services Coordinator
ASDWA
Association of State Drinking Water Administrators
ASR
aquifer storage and retrieval
AST
aboveground storage tank
ASTM
American Society for Testing and Materials
ASTSWMO
Association of State and Territorial Solid Waste Management Officials
ATRV
air toxics response vehicle
ATSDR
Agency for Toxic Substances and Disease Registry
Auto-GC
Automated Gas Chromatograph
AVO
average vehicle occupancy
AWMA
Air and Waste Management Association

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B B B B B B B B B B B B B B B B B B B B

BACM
best available control measures
BACT
best available control technology
BAE
baseline actual emissions
BAQC
Bureau of Air Quality Control (City of Houston)
BAR
Bureau of Automotive Repair
BART
Bay Area Rapid Transit (in San Francisco)
BART
Best Available Retrofit Technology
bbl
barrell
bbl/day
barrell(s) per day
BCs
boundary conditions
BECC
Border Environment Cooperation Commission
BEG
Bureau of Economic Geology (UT Austin)
BHP
brake horsepower
BIBI
benthic index of biotic integrity
BIF
boilers and industrial furnaces
BMPs
best management practices
BPA
Beaumont/Port Arthur
BTEX
benzene, toluene, ethyl benzene, and xylene
Btu
British thermal units
Btu/scf
British thermal units per standard cubic foot/feet

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C C C C C C C C C C C C C C C C C C C C

C
centigrade
C/C
Combustion (and) Coatings (Section)
C2H4O
ethyhlene oxide
C2H6
ethane
C3H8
propane
CAA
Clean Air Act
CAAA
Clean Air Act Amendments
CAFO
concentrated animal-feeding operation
CAIR
Clean Air Interstate Rule
CAIR2
Clean Air Interstate Rule; Phase 2
CAM
compliance-assurance monitoring
CAMR
Clean Air Mercury Rule
CAMS
continuous-air monitoring station
CAMx
Comprehensive Air Model with Extensions
CAP
Capacity Assurance Plan or Compliance Advisory Panel (Small Business and Local Government Assistance)
CAPCO
Capital Area Council of Governments
CARB
California Air Resources Board
CARE
clean air responsibility enterprise committee
CAS
carbon adsorption system
CATOX
catalytic oxidation unit
CAUSE
Citizens Allied and United for a Safe Environment
CBBEP
Coastal Bend Bays and Estuaries Program
CB05
Carbon Bond Mechanism Version 05
CBIV
Carbon Bond Mechanism Version IV
cc
cubic centimeter
CC
Corpus Christi
CCEDS
Consolidated Compliance and Enforcement Data System
CCH
contested case hearing
CCIP
Comprehensive Compliance Inspection Protocol
CCMP
Comprehensive Conservation and Management Plan
CCN
certificate of convenience and necessity
CCO
Chief Clerk’s Office
CDBGP
Community Development Block Grant Program
CDC
Centers for Disease Control and Prevention
CDS
Compliance Data System
CEIS
Computerized Emissions Inventory System
CEMS
Continuous Emission Monitoring System
CENRAP/RPO
Central Region Air Program/Regional Planning Organization
CERCLA
Comprehensive Environmental Responsibility, Compensation and Liability Act
cf/day
cubic foot or feet per day
CFC
chlorofluorocarbon
cfm
cubic foot or feet per minute
CFR
Code of Federal Regulations
CGA
cylinder gas audit
CH4
methane
CIN
control equipment identification number
CISWI
commercial and industrial solid-waste incineration
Cl2
chlorine
CMA
Chemical Manufacturers Association
CMP
(Texas) Coastal Management Plan
CMSA
consolidated metropolitan statistical area
CN
customer identification number
CNG
compressed natural gas
CO
carbon monoxide
CO2
carbon dioxide
COG
Council of Governments
COH
coefficient of haze
COMM
Commissioners
COMS
continuous opacity-monitoring system
CONTOP
continuous smelting-top blowing
CORE
control-operations review and evaluation
COS
carbonyl sulfide
CPI
consumer price index
CPMS
continuous parametric monitoring system
CPP
continuing planning process
CR
Central Registry
CRO
certification by responsible official
CRP
Clean Rivers Program
CS2
carbon disulfide
CRWR
Center for Research and Water Resources (UT Austin)
CSGWPP
Comprehensive State Groundwater Protection Program
CSI
Common Sense Initiative
CSR
Center for Space Research (UT Austin)
CT
cooling towers
CTG
Control Techniques Guidelines
CWA
Clean Water Act
CWS
commissioners’ work session

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D D D D D D D D D D D D D D D D D D D D

DAC
debutanized aromatic concentrate
DAR
duly authorized representative
DART
Dallas Area Rapid Transit
DE
destruction efficiency
DEA
diethanolamine
DERC
discrete emission-reduction credit
DFW
Dallas/Fort Worth (Metroplex)
DGA
diglycolamine
DIPA
diisopropylamine
DIR
Department of Information Resources
DMRG
Data Management Reference Guide
DO
dissolved oxygen
DOC
Department of Commerce
DOD
Department of Defense
DOE
Department of Energy
DOJ
Department of Justice
DOPA
Dairy Outreach Program Area
DOT
Department of Transportation
DPM
digital panel meter
DR
designated representative
DPS
Department of Public Safety
DRE
destruction and removal efficiency
dscf
dry standard cubic foot or feet
dscfm
dry standard cubic foot or feet per minute
dscm
dry standard cubic meters
DSHS
Department of State Health Services
DSS
decision support system
DV
design value or designated value
DVM
digital voltmeter

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E E E E E E E E E E E E E E E E E E E E

EA
environmental assessment
EC
electron capture
ECO
engineering-change order
ECOS
Environmental Council of the States
ED
(TCEQ) Executive Director
EDF
Environmental Defense Fund
EDRC
Episode Data Reporting Center
EEOC
Equal Employment Opportunity Commission
EERs
excess emission reports
EERS
Earth Electrical Resistivity Survey
EF
emissions factor
EFR
external floating roof tank
EG
emissions guidelines
EGAS
Economic Growth Analysis System
EGF
electric generating facility
EGR
exhaust-gas recirculation
EGU
electric generating unit
EI
emissions inventory
EIQ
Emissions Inventory Questionnaire
EIS
environmental impact statement
EKMA
empirical kinetic modeling approach
ELD
Environmental Law Division
ELP
El Paso
Emax
maximum (acceptable) emission (rate)
EPA
U. S. Environmental Protection Agency
EPCCHD
El Paso City-County Health District
EPN
emission point number
EPS3
Emissions Processing System Version 3
E&QA
Engineering and Quality Assurance
ERC
emission reduction credit
ERG
Eastern Research Group
ERGO
extended reports and graphic output
EROS
Earth Resources Observation System
ESAD
emission specifications for attainment demonstration
ESL
effects screening level
ESP
electrostatic precipitator
ESR
Enforcement System Review
ETA-PBL
ETA Weather Model Planetary Boundary Layer Numerical Algorithm
ETBE
ethyl tertiary-butyl ether
ETI
elapsed time indicator
ETR
employee trip reduction
EU
emission unit
EXEC
executive

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F F F F F F F F F F F F F F F F F F F F

FA
Financial Administration
FAA
Federal Aviation Administration
FAP
flexible air permit
FC
fluorocarbon
FCAA
Federal Clean Air Act
FCAAA
Federal Clean Air Act Amendments
FCCU
fluid catalytic cracking unit
FDDA
Four-Dimensional Data Assimilation
FEC
formal enforcement conference
FEMA
Federal Emergency Management Agency
FGR
flue-gas recirculation
FHWA
Federal Highway Administration
FID
flame ionization detector
FIFRA
Federal Insecticide, Fungicide, and Rodenticide Act
FIN
facility identification number
FIP
Federal Implementation Plan
FIPS
Federal Information Processing Standards
FIT
field-inspector training
FLM
Federal Land Manager
FLSA
Fair Labor Standards Act
FMLER
Flexible Membrane Liner Evaluation Report
FMVCP
Federal Motor Vehicle Control Program
FOD
Field Operations Division
FONSI
finding of no significant impact
FOP
federal operating permit
FR
Federal Register
FSR
financial status report or full-scale range
ft
foot or feet
ft/sec
foot or feet per second
FTE
full-time equivalent

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G G G G G G G G G G G G G G G G G G G

g
gram(s)
GACT
generally achievable control technology
gal
gallon(s)
gal/wk
gallon(s) per week
gal/yr
gallon(s) per year
GAQM
guideline on air quality models
GasFindIR
GasFind infrared (camera)
GBEP
Galveston Bay Estuary Program
GBF
Galveston Bay Foundation
GC
gas chromatograph or gas chromatography
GCCES
Gulf Coast Community Exposure Study
GCCS
(municipal solid waste) gas collection and control system
GC/ITD
gas chromatography/ion trap detector
GC/MS
gas chromatography/mass spectrometry
GCPCD
Galveston County Pollution Control District
GEOS-CHEM
Goddard Earth Observing Systems Chemistry Model
GFI
ground-fault interrupter
GHP
Greater Houston Partnership
GIS
geographic information system
GLC
ground-level concentration
GLCmax
maximum (predicted) ground-level concentration
GLO
General Land Office
GloBEIS
Global Biosphere Emissions and Interactions System
GLS
ground-level sampling
GOP
General Operating Permit
gpm
gallon(s) per minute
GPS
Global Positioning System
GPSA
Gas Processors Supplier Association
GPT
gas-phase titration
gr/100scf
grain(s) per 1000 standard cubic feet
gr/dscf
grain(s) per dry standard cubic foot
GRTS
Grant Reporting and Tracking System
GWPC
Groundwater Protection Committee, Texas

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H H H H H H H H H H H H H H H H H

H2CO
formaldehyde
H2S
hydrogen sulfide
H2SO4
sulfuric acid
HAN
heavy aromatic naphtha
HAP
hazardous air pollutant
HARC
Houston Advanced Research Center
HB
house bill
HBI
Hilsenhoff biotic index
HC
hydrocarbon
HCFC
hydrochlorofluorocarbon
HCl
hydrochloric acid
HCPCD
Harris County Pollution Control Department
HECT
HRVOC Emissions Cap and Trade
HEE
health effects evaluation
Hg
mercury
H-GAC
Houston-Galveston Area Council
HGACOG
Houston-Galveston Area Council of Governments
HGB
Houston-Galveston-Brazoria
HHV
higher heating value
Hi-Vol
high-volume air sampler
HMIW
hospital, medical, and infectious waste
HON
Hazardous Organics NESHAPS
HOV
high-occupancy vehicle
hp
horsepower
HQI
habitat quality index
hr
hour
HR
Human Resources
HRGC
high resolution gas chromatography
HRM
Houston Regional Marketing Network
HRMS
high resolution mass spectrometry
HRVOC
highly reactive volatile organic compounds
HSC
Houston Ship Channel or Health and Safety Code
HSWA
Hazardous and Solid Waste Amendments (to RCRA)
HUB
Historically Underutilized Business
HVLP
high-volume, low-pressure
HW
hazardous waste
HWIR
Hazardous Waste Identification Rules

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I I I I I I I I I I I I I I I I I I

I&HW
industrial and hazardous waste
IBEP
Integrated Border Environmental Plan
IBI
index of biotic integrity
IBWC
International Boundary and Water Commission
IC
Interstate Compacts or ion chromatograph(y)
ICE
internal combustion engine
ICP
inductively coupled plasma
IDAC
initial demonstration of analytical capabilities
IDLH
immediate danger to life and health
IF
intergovernmental funding
IFR
internal floating roof tank
IHW
industrial and hazardous waste
ILEV
inherently low-emission vehicle
I/M
inspection/maintenance
IMS
Information Management System
in H2O
inches of water
in Hg
inches of mercury
INE
Insituto Nacional de Ecologiá
Intx
intersection
IP
inhalable particulate
IPM
Integrated Planning Model
IR
information resources or infrared
IS
information systems
ISC
industrial source complex
ISCLT
industrial source complex, long-term
<
ISCST
industrial source complex, short-term
ISCST3
industrial source complex, short-term (model)
ISO
International Standards Organization
ITD
ion-trap detector

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K K K K K K K K K K K K K K K K K K K

kg
kilogram(s)
km
kilometer(s)
KVs
Vertical Exchange Coefficient

L L L L L L L L L L L L L L L L L L L L L

l
liter(s)
LACT
lease automatic custody transfer
LAER
lowest achievable emission rate
LAR
Legislative Appropriation Request
lb
pound(s)
lb/day
pound(s) per day
lb/hr
pound(s) per hour
lb/MMBtu
pound(s) per million British thermal units
LBB
Legislative Budget Board
LC
liquid chromatograph(y)
LCRA
Lower Colorado River Authority
LCTS
Legislative Contact Tracking System
LDAR
leak detection and repairs (Requirements)
LEV
low-emission vehicle
LHV
low heating value
LL
load losses
LNB
low-nitrogen oxides (NOx) burner
LNG
liquefied natural gas
LOE
level of effort
LOR
liquid organic reactor
LOV
letter of violation
LPG
liquefied petroleum gas
LPST
leaking petroleum storage tank
LT/D
long ton per day
LTO
landing and takeoff
LU/LC
land-use/land-cover
LUST
leaking underground storage tank

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M M M M M M M M M M M M M M M M M

m
meter(s)
M
one thousand (Roman numberal) or one million
m/sec
meter(s) per second
m3
cubic meter
MACT
maximum achievable control technology
MAERT
Maximum Allowable Emission Rate Table
MBE
minority business enterprise
MCM
million cubic meters
MDEA
methyl-diethanolamine
MDERC
mobile discrete emission-reduction credit
MEA
monoethanol amine
MECA
Mercury Emissions Control Act
MECT
Mass Emissions Cap and Trade
MERA
modeling and effects review applicability
MERC
mobile emission reduction credit
MFM
mass flowmeter
mg
milligram
mg/g
millgram(s) per gram
Mg/yr
megagram(s) per year
mL
millilambert(s) or milliliter(s)
MM
million (Roman numerals)
MM5
Fifth Generation Meteorological Model
MMBtu
million British thermal units
MMBtu/hr
million British theraml units per hour
MMCFD
million cubic feet per day
MMg
million megagrams
MNSR
minor new source review
MO
Monitoring Operations
MOA
memorandum of agreement
MOSES
Mothers Organized to Stop Environmental Sins
MOU
memorandum of understanding
MPO
metropolitan planning organization
MPTER
multiple-point Gaussian dispersion algorithm with terrain adjustment
MRAP
Medical Resources Advisory Panel
MS
Mobile Source
MSA
Metropolitan Statistical Area
MSDS
Material Safety Data Sheet
MSS
maintenance, startup, and shutdown
MSW
municipal solid waste
MSWDF
municipal solid-waste-disposal facility
MSWLF
municipal solid-waste landfill
MSWRAC
Municipal Solid Waste Reduction Advisory Committee
MS/Z
multispan/zero box
MTBE
methyl tertiary-butyl ether
MUD
municipal utility district
MVVD
manual vent valve discharge
MW
megawatt

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N N N N N N N N N N N N N N N N N N N N

N2
nitrogen
NA
nonattainment
NAA
nonattainment area
NAAQS
National Ambient Air Quality Standards
NAAS
National Air Audit System
NAD Bank
North American Development Bank
NADB
National Allowance Database
NADP
National Atmospheric Deposition Program
NAFTA
North American Free Trade Agreement
NAMS
national air monitoring station
NaOH
sodium hydroxide
NAPAP
National Acid Precipitation Assessment Program
NAQTS
national air quality trend station
NAR
nonattainment review
NARMP
National Acid Rain Monitoring Program
NASA
National Aeronautics and Space Administration
NASN
National Air Surveillance Network
NCAMS
noncontinuous air-monitoring station
NCEP
National Centers for Environmental Prediction
NCP
National Contingency Plan or non-criteria pollutant
NCTCOG
North Central Texas Council of Governments
NDIR
nondispersive infrared analyzer
NEDS
National Emissions Data System
NEI
National Emissions Inventory
NEPA
National Environmental Policy Act
NEPPS
National Environmental Performance Partnership System
NESCAUM
Northeast States for Coordinated Air Use Management
NESHAP
National Emission Standards for Hazardous Air Pollutants
NGA
National Governors Association
NGL
natural gas liquids
NH3
ammonia
NIST
National Institute of Standards and Technology
NMIM
National Mobile Inventory Model
NMOC
nonmethane organic compound
NMVOC
nonmethane VOC
NNSR
nonattainment new source review
NO2
nitrogen dioxide
NOD
notice of deficiency
NOE
notice of enforcement
NOI
notice of intent
NOx
Nitrogen Oxides
NOAA
National Oceanic and Atmospheric Administration
NORM
naturally occurring radioactive material
NOV
Notice of Violation
NOY
Nitrogen Species
NPDES
National Pollutant Discharge Elimination System
NPL
National Priorities List
NPS
nonpoint source
NRCS
Natural Resource Conservation Service
NRDA
natural resource damage assessment
NSPS
New Source Performance Standards
NSF
National Science Foundation
NSR
new source review
NSRP
new source review permits

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O O O O O O O O O O O O O O O O O O O

O2
oxygen
O3
Ozone
OA
Office of Air
OAS
Office of Administrative Services
OBD
on-board diagnostic
OCE
Office of Compliance and Enforcement
OD
outside diameter
OGS
oil and gas site
OLS
Office of Legal Services
ONRW
Outstanding National Resource Waters
OOW
Office of Waste
ORIS
Office of Regulatory Information System
OSFR
Office of State and Federal Relations
OSHA
Occupational Safety and Health Administration
OSSF
on-site sewage facility or facilities
OTA
Office of Technology Assessment
OW
Office of Water

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P P P P P P P P P P P P P P P P P P P

P2
Pollution Prevention
PACE
People Against a Contaminated Environment
PAE
projected actual emissions
PAL
plant-wide applicability limit
PAMS
photochemical air monitoring stations
PAR
photosynthetically active solar radiation
Pb
lead
PBR
permit by rule
PCB
polychlorinated biphenyl
PCP
pollution-control project
PCS
permit-compliance system
PCV
positive crankcase ventilation
PDS
preliminary determination summary
PE
professional engineer
PEL
priority enforcement level or Priority Enforcement List (tires)
PEMS
predictive emission monitoring system
PFD
proposal for decision
PGMA
priority groundwater-management area
PHHVAS
pesticide-head high-volume air sampler
PIC
Public Interest Counsel
PID
photoionization detector
PM
particulate matter or periodic monitoring
PM10
particulate matter 10 microns or less in diameter
PM2.5
particulate matter 2.5 microns or less in diameter
PMI
preventive-maintenance instructions
PMR
pollutant mass rate
PMSA
Primary Metropolitan Statistical Area
PN
public notice
PNAP
public-notice-authorization package
POC
products of combustion
POHC
principal organic hazardous constituent
POTW
publicly owned treatment works
PPA
Pollution Prevention Act
ppb
parts per billion
ppbc
parts per billion by carbon
ppbv
parts per billion by volume
pphm
parts per hundred million
ppm
parts per million
ppmdv
parts per million by dry volume
ppmv
parts per million by volume
ppmvd
parts per million by volume, dry
PROFEPA
Procuradaria Federal para la Proteción al Ambiente
PRS
Permitting and Registration Support
PS
primary standard
PSCFv2
Potential Source Contribution Factor, version 2
PSD
prevention of significant deterioration
PSDB
point source database
PSI
pollutant standard index or pounds per square inch
psia
pounds per square inch, absolute
psig
pounds per square inch, gauge
PST
petroleum storage tank
PSTR
petroleum storage tank remediation
PTE
potential to emit
PTS
permeation-tube system
PVC
polyvinyl chloride

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Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q

QA
quality assurance
QC
quality control or Quality Council

R R R R R R R R R R R R R R R R R R

R
Region
RA
risk assessment or relative accuracy
RAC
Research Advisory Council
RACM
reasonably available control measure
RACT
reasonably available control technology
RAM
Gaussian-plume multiple-source air quality algorithm
RATA
relative accuracy test audits
RBLC
RACT/BACT/LAER clearinghouse
RCRA
Resource Conservation and Recovery Act
RCRIS
Resource Conservation Recovery Act Information System
REMI
Regional Economic Models, Inc.
RENEW
Resource Exchange Network for Eliminating Waste
RFC
request for comments
RFP
reasonable further progress or request for proposal
RHC
reactive hydrocarons
RI/FS
remedial investigation/feasibility study
RICE
reciprocating internal combustion engine
RIM
rule-interpretation memo
RM
reference method
RN
(regulated entity) reference number
RO
responsible official
ROG
reactive organic gas
ROM
regional oxidant model
RP
responsible party
RPR
Responsible Party Remediation
RPRC
Rule and Policy Review Committee
RR
Rule Registrations (Section)
RRC
Railroad Commission of Texas
RRF
Relative Response Factor
RRT
requirements reference table
RS
registered sanitarian
RSD
resultant standard deviation
RTC
response to comments
RTP
Regional Transportation Plan or Research Triangle Park
RVCM
residual vinyl chloride monomer
RVD
relief-valve discharge
RVP
Reid vapor pressure
RWA
receiving-water assessment
RWCD
residential wood-combustion devices

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S S S S S S S S S S S S S S S S S S S

SABCUTS
San Antonio Bexar County Urban Transportation System
SAMWG
Standing Air Monitoring Work Group
SAPEL
Special Authorization Priority Enforcement List (tires)
SARA
Superfund Amendments and Reauthorization Act or San Antonio River Authority
SAROAD
storage and retrieval of aerometric data
SAV
site-assessment visit
SBEA
Small Business and Environmental Assistance
SBAdv
Small Business Advocate
SCAQMD
South Coast Air Quality Management District (in California)
SCC
source category code or source classification code
sccm
standard cubic centimeters per minute
scfm
standard cubic feet per minute
SCERP
Southwest Consortium on Environmental Research and Planning
scf
standard cubic foot or feet
scfh
standard cubic foot or feet per hour
scmd
standard cubic meter per day
SCR
selective catalytic reduction
SD
standard deviation
SDWA
Safe Drinking Water Act
SE
standard exemption
SEM
scanning electron microscope
SEMARNAT
Secretaría de Medio Ambiente y Recursos Naturales (in Mexico)
SFA
Stephen F. Austin State Office Building
SFIREG
State-FIFRA Issues Research and Evaluation Group
SIC
source identification code or Standard Industrial Classification
SIL
significant impact levels
SIP
State Implementation Plan
SIS
Source Investigation System
SLAMS
state and local air-monitoring station
SLER
soil-liner-evaluation report
SLPM
standard liters per minute
SLQCP
Soil Liner Quality Control Plan
SMC
significant monitoring concentration
SMP
State Management Plan
SMSA
Standard Metropolitan Statistical Area
SMSS
scheduled maintenance, startup, or shutdown (activities)
SNCR
selective noncatalytic reduction
SO2
sulfur dioxide
SO4
sulfate
SOB
statement of basis
SOCMI
synthetic organic chemical manufacturing industry
SOP
site operating permit
SOx
oxides of sulfur
SP
standard permit
SPCC
spill-prevention control and countermeasures
SPM
special-purpose monitoring
SPNSS
standards of performance for new stationary sources
SRM
standard reference material
SRU
sulfur recovery unit
SS
Support Services
SSBO
state small business ombudsman
SSI
size-selective inlet
SST
Sea Surface Temperature
STAAPA
State and Territorial Air Pollution Program Administrators
STARS
State of Texas Air Reporting System
Std
standard
STEERS
State of Texas Environmental Electronic Reporting System
SWDA
Solid Waste Disposal Act
SWP
Source Water Protection Program
SWQM
Surface Water Quality Monitoring
SWQMIS
Surface Water Quality Monitoring Information System

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T T T T T T T T T T T T T T T T T T T

T&S
transfer and storage
TAB
Texas Association of Business
TAC
Texas Administrative Code
TAMU
Texas Agricultural and Mechanical University
TASN
Texas Air Sampling Network
TBA
tertiary-butyl alcohol
TBPC
Texas Building and Procurement Commission
TBT
tributyltin
TC
total carbon
TCAA
Texas Clean Air Act
TCC
Texas Chemical Council
TCLP
toxicity characteristic leaching procedure
TCM
Texas Climatological Model or transportation control measures
TCEQ
Texas Commission on Environmental Quality
TDoC
Texas Department of Commerce
TDF
tire-derived fuel
TEA
triethanolamine
TEM
Texas Episodic Model
TERP
Texas Emissions Reduction Program
texAER
Texas Air Emissions Repository
TexAQS II
Second Texas Air Quality Study (2006)
TEXARC
Texas Experiment in Augmenting Rainfall through Cloudseeding
TexReg
Texas Register
TGWPC
Texas Groundwater Protection Committee
THC
total hydrocarbons
THM
trihalomethane
THROX
thermal heat-recovery oxidation unit
THSC
Texas Health and Safety Code
TIP
Transportation Improvement Program
Title III
Emergency Planning and Community Right-to-Know Act of 1986
TLAP
Texas Lab Accreditation Program or Texas Land Application Permit
TLC
Texas Legislative Council
TLV
(health) threshold limit value
TMDL
total maximum daily load
TMOGA
Texas Midcontinent Oil and Gas Association
TNMHC
Total Non-Methane Hydrocarbon
TNRCC
Texas Natural Resource Conservation Commission (name changed to TCEQ in 2002)
TNRIS
Texas Natural Resources Information System
TOC
total organic carbon or total organic compounds
TOP
Texas Orthoimagery Program (DIR)
tpd
tons per day
tph
tons per hour
TPHA
Texas Public Health Association
TPS
Techncal Program Support (Section)
tpy
tons per year
TPWD
Texas Parks and Wildlife Department
TQM
total quality management
TRACS
Texas Regulatory Auditing and Compliance System
TRB
Transportation Research Board
TRI
Toxics Release Inventory
TRIS
Toxics Release Information System
TRRP
Texas Risk Reduction Program
TRS
total reduced sulfur
TRV
technical review
TS
transfer standard or (municipal solid waste) transfer station
TSCA
Toxic Substances Control Act
TSL
Texas State Library and Archives
TSP
total suspended particulate
TSS
total suspended solids
TSSWCB
Texas State Soil and Water Conservation Board
TTC
Texas Transportation Commission
TTI
Texas Transportation Institute
tvp
true vapor pressure
TWC
Texas Water Code
TWDB
Texas Water Development Board
TxDOT
Texas Department of Transportation
TxLED
Texas Low-Emission Diesel
TxREG
Texas Register

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U U U U U U U U U U U U U U U U U

U/M
upset and maintenance
UA
unit attribute(s)
UAM
urban airshed model
UCR
Utility Certification and Rate Design Program
UIC
Underground Injection Control
ULEV
ultra-low-emission vehicle
UMTA
Urban Mass Transit Administration
USAS
Uniform Statewide Accounting System
USC
United States Code
USDoT
United States Department of Transportation
USEPA
United States Environmental Protection Agency
USGS
United States Geological Survey
USOMB
United States Office of Management and Budget
USSCS
United States Soil Conservation Service
UST
underground storage tank
UT-CSR
University of Texas Center for Space Research
UTM
universal transverse Mercator

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V V V V V V V V V V V V V V V V V V

V-B
Vasquez-Beggs correlation equation
VAC
volts, alternating current
VCU
venturi calibration unit
VDC
volts, direct current
VIN
vehicle identification number orvendor identification number
VMT
vehicle miles traveled
VOC
volatile organic compound
VR
vapor recovery
VRO
variable-resistance orifice
VRU
vapor recovery unit or system
VTCS
Vernon’s Texas Civil Statutes

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W W W W W W W W W W W W W W

WBE
woman-owned business enterprise
WCID
Water Control and Improvement District
WD
wind direction
WDP
working draft permit
WER
water-effects ratio
WGA
Western Governors’ Association
WHP
Wellhead Protection Program
WLE
waste-load evaluation
WMP
Waste Management Plan
WQMP
Water Quality Management Plan
WRAC
Waste Reduction Advisory Committee
WRPA
Waste Reduction Policy Act
WS
wind speed
WU
water utility or utilities

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X X X X X X X X X X X X X X X X X X

XRF
X-ray fluorescence

Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z

ZBB
zero base budget
ZEV
zero emission vehicle

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Additional Sources of TCEQ Acronyms:

Surface Water Quality Monitoring Procedures (RG 415 & 416)
Volume 1 (See Appendix D)
Volume 2 (See page ix)

Data Monitoring Reference Guide, Chapter 4