TCEQ Acronyms and Other Abbreviations

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

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Numbers

303(d)

Section of Clean Water Act that includes impaired water bodies in category 5

305(b)

Section of the Clean Water Act that calls for a biennial assessment of surface water Quality in Texas

40 CFR 60

Title 40, Code of Federal Regulations, Part 60

Symbols

°C

temperature degrees Celsius

°F

temperature degrees Fahrenheit

°K

temperature degrees Kelvin

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A

AA

atomic absorption

AAS

atomic absorption spectrometry

AASHTO

American Association of State Highway and Transportation Officials

AC

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

AEGL

acute exposure guidelines levels

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

AMCV

air monitoring comparison value

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

APO

Aggregate Production Operations

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

Annual Summary Report

AST

aboveground storage tank

ASTM

American Society for Testing and Materials

ASTSWMO

Association of State and Territorial Solid Waste Management Officials

ASVS

Aboveground Storage Vessel Safety Program

ATG

Automatic Tank Gauge

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

AWS

Annual Waste Summary

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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

barrel

bbl/day

barrel(s) per day

BCs

boundary conditions

BECC

Border Environment Cooperation Commission

BEG

Bureau of Economic Geology (UT Austin)

BER

Background Evaluation Report or Ballast Evaluation Report

BHP

brake horsepower

BIBI

benthic index of biotic integrity

BIF

boilers and industrial furnaces

BCM

benchmark concentration

BMCL

benchmark concentration lower confidence limit

BMD

benchmark dose

BMPs

best management practices

BMR

benchmark response

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

centigrade

C/C

Combustion (and) Coatings (Section)

C₂H₄O

ethylene 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 or chemical abstract service

CASRN

chemical abstract service registry number

CATMN

Community Air Toxics Monitoring Network

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

CCS

Citizens Convenience Station

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

CID

Commissioners Integrated Database

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

COC

chemicals of concern

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

CPA

Texas Comptroller of Public Accounts

CPP

continuing planning process

CR

Central Registry

CRM

Customer Relations Management

CRO

certification by responsible official

CRP

Clean Rivers Program

CRWR

Center for Research and Water Resources (UT Austin)

CS₂

carbon disulfide

CSI

Common Sense Initiative

CSR

Center for Space Research (UT Austin)

CSGWPP

Comprehensive State Groundwater Protection Program

CT

cooling towers

CTG

Control Techniques Guidelines

CWA

Clean Water Act

CWS

commissioners’ work session

CWCP

Clean Water Certification Program

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D

DAC

debutanized aromatic concentrate

DAR

duly authorized representative

DART

Dallas Area Rapid Transit

DC

Dry Cleaners

DE

destruction efficiency

DEA

diethanolamine

DERC

discrete emission-reduction credit

DFW

Dallas/Fort Worth (Metroplex)

DGA

diglycolamine

DIPA

disopropylamine

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

DP

Data Processing

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

DSD

development support document

DSHS

Department of State Health Services

DSS

decision support system

DV

design value or designated value

DVM

digital voltmeter

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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

E_max

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

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

FDP

Final Draft Permit

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

FTPS

File Transfer Protocol Server

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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

GI

General Information

GIS

geographic information system

GLC

ground-level concentration

GLC_max

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

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

HQ

hazard quotient

HQI

habitat quality index

hr

hour

HR

Human Resources

HRGC

high resolution gas chromatography

HRM

Houston Regional Monitoring Network

HRMS

high resolution mass spectrometry

HRVOC

highly reactive volatile organic compounds

HRS

hazard ranking system

HSC

Houston Ship Channel or Health and Safety Code

HSDB

hazard substances data bank

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&HW

industrial and hazardous waste

IARC

International Agency for Cancer Research

IBEP

Integrated Border Environmental Plan

IBI

index of biotic integrity

IBWC

International Boundary and Water Commission

IC

Interstate Control or Ion Chromatography

ICE

internal combustion engine

ICP

inductively coupled plasma

IDP

Initial Draft Permit

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

IRIS

integrated risk information system

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

kg

kilogram(s)

km

kilometer(s)

KVs

Vertical Exchange Coefficient

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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

LD

Litigation Division

LDAR

leak detection and repairs (Requirements)

LEV

low-emission vehicle

LFG

Landfill Gas

LHV

low heating value

LL

load losses

LNB

low-nitrogen oxides (NO_x) burner

LNG

liquefied natural gas

LOAEL

lowest observable adverse effects level

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

meter(s)

M

one thousand (Roman numeral) 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

milligram(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 thermal units per hour

MMCFD

million cubic feet per day

MMg

million megagrams

MNSR

minor new source review

MO

Monitoring Operations

MOA

memorandum of agreement or mode of action

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

MRL

minimal risk level

MS

Mobile Source

MSA

Metropolitan Statistical Area

MSD

Marin Sanitation Device

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

MTO

Motion to Overturn

MTBE

methyl tertiary-butyl ether

MUD

municipal utility district

MVVD

manual vent valve discharge

MW

megawatt

MWRS

Monthly Waste Receipt Summary

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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

NAPD

Notice of Application and Preliminary Decision

NAICS

North American Industry Classification System

NAFTA

North American Free Trade Agreement

NAMS

national air monitoring station

NaOH

sodium hydroxide

NAORPM

Notice of Application and Opportunity to Request a Public Meeting

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

NIOSH

National Institute for Occupational Health and Safety

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

NOC

Notice of Compliance or Notice of Construction

NOAEL

no observable adverse effects level

NOD

notice of deficiency

NOE

notice of enforcement

NOI

notice of intent

NO_x

Nitrogen Oxides

NOAA

National Oceanic and Atmospheric Administration

NONC

Notice of Noncompilance

NORI

Notice of Receipt of Application and Intent to Obtain a Permit

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

NRR

No Response Required

NSPS

New Source Performance Standards

NSF

National Science Foundation

NSR

new source review

NSRP

new source review permits

NTC

Notice of Technically Complete

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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

OL

Occupational licensing

OLS

Office of Legal Services

OMB

Office of Management and Budget

ONRW

Outstanding National Resource Waters

OOW

Office of Waste

OPIC

Office of Public Interest Council

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

P2

Pollution Prevention

PAA

Permit Amendment Application

PACE

People Against a Contaminated Environment

PAE

projected actual emissions

PAL

plant-wide applicability limit

PAMS

photochemical air monitoring stations

PAR

Preliminary Administrative Review or Photosynthetically Active Solar Radiation

Pb

lead

PBR

permit by rule

PCB

polychlorinated biphenyl

PCC

Post Closure Care

PCL

protective concentration level

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

PFAS

per-and polyfluoroalkyl substances

PFCs

perfluoro

PFD

proposal for decision

PG

Partner Guidance

PGMA

priority groundwater-management area

PHHVAS

pesticide-head high-volume air sampler

PIC

Public Interest Counsel

PID

photoionization detector

PIP

Public Involvement Plan

PIR

Public Information Request

PM

particulate matter or periodic monitoring

PM₁₀

particulate matter 10 microns or less in diameter

PM_2.5

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

PNV

Published Notice Verification

PNAP

public-notice-authorization package

POC

products of combustion

POD

point of departure

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

ppt

parts per trillion

PROFEPA

Procuradaria Federal para la Protección 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

QA

quality assurance

QC

quality control or Quality Council

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R

R

Region

RA

risk assessment or relative accuracy

RAC

Research Advisory Council

RACM

reasonably available control measure

RACT

reasonably available control technology

RAGS

risk assessment guidance for superfunds

RAM

Gaussian-plume multiple-source air quality algorithm

RATA

relative accuracy test audits

RBEL

risk-based exposure levels

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

ReV

reference toxicity factor-inhalation reference value

RDR

Release Determination Report

RFC

request for comments

RfC

reference concentration

RfD

reference dose

RFP

reasonable further progress or request for proposal

RG

Regulatory Guidance

RHC

reactive hydrocarbons

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

SAB

Science Advisory Board

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

SBLGA

Small Business Local Government Assistance

SC

Stationary Compactors

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

SCL

secondary constituent level

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)

SEP

Supplemental Environmental Projects

SFA

Stephen F. Austin State Office Building

SFR

State/Federal Report

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

SLGTR

Sludge Transporters

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 Plan or Standard Operating Procedures

SO_x

oxides of sulfur

SP

standard permit

SOS

Texas Secretary of State

SPCC

spill-prevention control and countermeasures

SPM

special-purpose monitoring

SPNSS

standards of performance for new stationary sources

SQL

sample quantitation levels

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

SUNSS

Single-Use Non-CROMERR Submission System

SVOC

semi-volatile organic compound

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&S

transfer and storage

TA

Temporary Authorization

TAB

Texas Association of Business

TAC

Texas Administrative Code

TAMIS

Texas Air Monitoring Information System

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

TDMS

Temporary Debris Management Sites

TEA

triethanolamine

TEM

Texas Episodic Model

TERP

Texas Emissions Reduction Program

TexAQS II

Second Texas Air Quality Study (2006)

TEXARC

Texas Experiment in Augmenting Rainfall through Cloud Seeding

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

TOOS

Temporarily Out of Service

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 matter

TSS

total suspended solids

TSSWCB

Texas State Soil and Water Conservation Board

TTC

Texas Transportation Commission

TTI

Texas Transportation Institute

tvp

true vapor pressure

TWA

time weighted average

TWC

Texas Water Code

TWDB

Texas Water Development Board

TxDOT

Texas Department of Transportation

TxGio

Texas Geographic Information Office

TxLED

Texas Low-Emission Diesel

TxREG

Texas Register

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U

U/M

upset and maintenance

UA

unit attribute(s)

UAM

urban airshed model

UCR

Utility Certification and Rate Design Program

UF

uncertainty factor

UIC

Underground Injection Control

ULEV

ultra-low-emission vehicle

UMTA

Urban Mass Transit Administration

UO or UOR

Used Oil Registration

URF

unit risk factor

URL

Uniform Reource Locator

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-B

Vasquez-Beggs correlation equation

VAC

volts, alternating current

VCP

Voluntary Cleanup Program

VCU

venturi calibration unit

VDC

volts, direct current

VIN

vehicle identification number or vendor 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

WBE

woman-owned business enterprise

WCC

Central Files Search Engine

WCID

Water Control and Improvement District

WD

wind direction

WDP

working draft permit

WER

water-effects ratio

WGA

Western Governors’ Association

WHO

World Health Organization

WHP

Wellhead Protection Program

WLE

waste-load evaluation

WMP

Waste Management Plan

WPD

Waste Permits Division

WRS

Waste Receipt Summary

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

XRF

X-ray fluorescence

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Z

ZBB

zero base budget

ZEV

zero emission vehicle

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