multiple air toxics exposure study (mates iv) preliminary results · 2015-08-28 · pico rivera...
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Multiple Air Toxics Exposure Study
(MATES IV)
Preliminary Results
2014 NAAMC, Studies in Air ToxicsSouth Coast Air Quality Management District
August 13, 2014
Overall Summary
• PRELIMINARY RESULTS
• Trends in monitored levels air toxics continue to decline
• Modeled exposures and risks substantially lower compared to MATES III
• Diesel PM remains largest component of air toxics estimated risk
MATES IV Monitoring • Continuation of MATES III sites for trend analysis
• Measured species: VOCs, Carbonyls, TSP metals, Cr6+, Lead, PM2.5 speciation (metals, EC,
OC), added Black Carbon & Particle Counts (Ultra-Fine Particles)
• 10 sites, 1-in-6 day, 24-hr integrated sampling, continuous monitoring for BC & UFP
• Utilize ongoing toxics monitoring programs
• Duration: 07/01/2012 – 07/01/2013
• Local scale studies
Preliminary MATES IV data
0.0
0.5
1.0
1.5
2.0
2.5
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Average
ng/m3
Arsenic
MATES II MATES III Year 1 MATES III Year 2 MATES IV
0
10
20
30
40
50
60
70
80
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Average
ng/m3
Lead
MATES II MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
Rule 1420.1 30-Day Limit = 150 ng/m3
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Average Filter Blank Avg
ng/m3
Hexavalent Chromium
MATES II AQMD Lab data MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
Preliminary MATES IV data
0
5
10
15
20
25
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Average
ng/m3
Nickel
MATES II MATES III Year 1 MATES III Year 2 MATES IV
0
5
10
15
20
25
30
35
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Average
ng/m3
Vanadium - TSP
MATES II MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
Preliminary MATES IV data
0.0
0.5
1.0
1.5
2.0
2.5
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Sites Average
Benzene
MATES II MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Sites Average
1,3 Butadiene
MATES II MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Sites Average
Formaldehyde
MATES II MATES III Year 1 MATES III Year 2 MATES IV
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux West Long Beach
Sites Average
ug/m3
EC PM2.5
MATES III Year 1 MATES III Year 2 MATES IV
Preliminary MATES IV data
0
20
40
60
80
100
120
2007 2008 2009 2010 2011 2012 2013
Re
lati
vve
Ch
ange
fro
m F
irst
Ye
ar N
AT
TS
An
nu
al A
vera
ge (
%)
Benzene
Formaldehyde
Pb - CELA
Cr6-CELA
Pb - Rubi
Cr6-Rubi
NATTS Trends for Selected Pollutants
NATTS Trends for Selected Pollutants
0
50
100
150
200
250
300
350
400
450
2007 2008 2009 2010 2011 2012 2013
Re
lati
vve
Ch
ange
fro
m F
irst
Ye
ar N
AT
TS A
nn
ual
A
vera
ge (
%) 1,3-Butadiene
Ni - CELA
Ni - Rubi
As - CELA
As - Rubi
Preliminary MATES IV data2103 shows Q1 & Q2 EC data only. 2013 GDP value not yet available
Elemental Carbon Trends and the Economy
0
5
10
15
20
25
30
35
40
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
CA
Co
nst
r. G
DP
($
10
bill
ion
s)To
tal #
of
TEU
(m
illio
n)
EC (
µg/
m3)
Container Throughput CA Construction GDPRubidoux AnaheimLong Beach Los AngeesFontana
MATES IV Monitored Air Toxics Risk
Preliminary MATES IV data
68.0%
8.3%
7.7%
5.6%
10.4%
MATES IV Air Toxics Risk
Diesel PM
Benzene
1,3 Butadiene
Carbonyls
Other
Basinwide Risk: 422 per million
Based on Average at 10 Fixed Monitoring sites
0
200
400
600
800
1000
1200
1400
1600
To
ns
Pe
r D
ay
Other
Carbonyls
1,3 Butadiene
Benzene
Diesel PM
IIIIII
III
III
III
IIIIII
IIIIII III
III
IV
IVIV
IV
IV
IVIVIVIVIVIV
MATES IV Monitored Air Toxics Risk
65% Lower than MATES III
Emissions Inventory
Weighted by Cancer Potency
0
20,000
40,000
60,000
80,000
MATES II(1998)
MATES III(2005)
MATES IV(2012)
Emis
sio
ns
as D
PM
(lb
s/d
ay)
Area
Point
Off-road
On-road
Category
Change from
MATES III (%)
Change from
MATES II (%)
Area -77.2 -86.8
Point +4.9 -64.0
Off-road -73.5* -73.2
On-road -49.4 -55.7
*about half of Off-road reduction is due to a change in emissions estimation methods
Modeled Air Toxics Risk – MATES III
Modeled Air Toxics Risk – MATES IV
Preliminary MATES IV data
Modeled Air Toxics Risk
MATES III to MATES IV Difference
Preliminary MATES IV data
Preliminary Conclusions
• Monitored data, emissions inventory and modeling all show similar and significant cancer risk reductions between 2005/06 and 2012/13
• Diesel Particulate Matter accounts for 68% of the cancer risk
• All results are preliminary and are undergoing further validation and review