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