Identification of Pollutant Point Emission SourcesNovember 18th, 2003

Sunghye Chang

University of Texas at Austin

GIS Term Project

Introduction

Purposes - To create database for identifying pollutant point emission

source and monitoring site by using GIS ArcMap - To determine the magnitude and variability of non-routine

emissions (called ‘Event Emission’) relative to average annual emissions

- To find remarkable monitoring sites for Event Emission

Focus is on total volatile organic compounds (VOC) and highly reactive volatile organic compounds (HRVOC): ethene, propene, butene, and 1,3-butadiene

Domain Region (Houston Galveston Area)

Brazoria

Galveston

ChamberJefferson

OrangeHarris

Montgomery

TEXAS

Map Obtained from Census Tiger 2000

Houston

Data Collection

Pollutant Point Sources VOC emissions from

TCEQ (2000) Air Emission Event

Reports from TCEQ (2003)

Monitoring Sites CAMS from TCEQ VOC measurement in

monitoring site from EPA (2002) :200MB

1. Sorting Data by Using MS Access by county and type of VOC

2. Organizing in Excel

3. Save as DBF file for Attribute table in ArcMap

Defining Coordinate System!

Default Lambert Conformal Conic Projection in ArcMap

Central Meridian : -96Standard Parallel 1: 20Standard Paralle 2: 60Latitude of Origin: 40

Lambert Conformal Conic Projection for emission point source.

Central Meridian : -100Standard Parallel 1: 30Standard Paralle 2: 60Latitude of Origin: -100

When DBF file is shown as shape file, and when coordinate is different from default coordinate in ArcMap, the coordinate system need to be defined manually.

•Monitoring Sites

Monitoring coordinate – monitoring CAMS number – Site ID - types of monitoring – VOC Measurement values

•Emission Point Sources

Emission point source coordinate – Name of industrial sources– Pollutant emissions – Event source emissions

Joining tables for VOC emission sources and monitoring sites

Location

VOC Emission Rate

Database of Monitoring Sites

237 CAMS monitoring sites

VOC values in VOC monitoring sites (1/2/2002 – 9/29/2002)

22 VOC monitoring sites

Parameter Code Parameter Desc

43000 SUM OF PAMS TARGET COMPOUNDS

43102 TOTAL NMOC

43202 Ethane

43203 Ethylene

43204 Propane

43205 Propylene

43206 Acetylene

43212 n-Butane

43214 Isobutane

43216 trans-2-Butene

43217 cis-2-Butene

43220 n-Pentane

43221 Isopentane

43224 1-Pentene

43226 trans-2-Pentene

43227 cis-2-Pentene

43230 3-Methylpentane

57 VOC species are detected in VOC monitoring sites, and measured in ppb

Ethylene 43203 (2002 year)

0

20

40

60

80

100

1/2 2/21 4/12 6/1 7/21 9/9

Date

Sam

ple

Val

ue(

pp

b)

Propene 43205 (2002 year)

0

2

4

6

8

10

12

1/2 2/21 4/12 6/1 7/21 9/9

Date

Sa

mp

le V

alu

e (

pp

b)

Analysis of monitoring site and defining its main emission source

Valero Refining Houston Refinery, HG0130C

1035

57

69

26

1039

Event VOC EmissionsHarris, Galveston, Chambers, and Brazoria Counties

Total VOC Event Emissions: 2,940,477 lbsas Reported Jan 31 - Oct 31, 2003

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

0 730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760

Annual Hour

Em

issi

on

s (lb

s/h

r)

Event Emissions

2000 Annual Avg

220,018 lbs/hr

11,442 lbs/hr

Event HRVOC EmissionsHarris, Galveston, Chambers, and Brazoria Counties

Total HRVOC Event Emissions: 1,532,404 lbsas Reported Jan 31 - Oct 31, 2003

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

20000

0 730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760

Annual Hour

Em

issi

on

s (lb

s/h

r)

Event Emissions

2000 Annual Avg

39,340 lbs/hr

1685 lbs/hr

Unit: tons/year

Total HRVOC Emission (2000)

Unit: tons/year

Total VOC Emission (2000)

Unit: tons/year

Event VOC Emission (2003)

Unit: tons/year

Event HRVOC Emission (2003)

Monitoring Site for Event HRVOC Emission

Unit: tons/year

Event HRVOC Emission

Conclusions

Spatially distributed emission sources and monitoring sites by GIS ArcMap allows one can recognize the actual location.

Linked database of emission sources and monitoring sites leads convenience of data access.

Monitoring sites which mainly detect Event Emissions would be considered as remarkable monitoring sites for sudden upcoming Event Emissions.

Acknowledgement

Dr. David Maidment Cindy Murphy in CEER