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2,3,5-triemethyl naphthalene

phenanthrene

anthracene

me-phenanthrenes/anthracenes

fluoranthene

pyrene

benzo[c]phenanthrene

benzo[ghi]fluoranthene

cyclopenta[cd]pyrene

benz[a]anthracene

chrysene + triphenylene

benzo[b+j+k]fluoranthene

benzo[e]pyrene

benzo[a]pyrene

perylene

indeno[1,23-cd]fluoranthene

benzo[c]chrysene

dibenz[a,j]anthracene

indeno[1,23-cd]pyrene

dibenz[a,h+a,c]anthracene

benzo[b] chrysene

benzo[ghi]pyrene

coronene

dibenzo[a,l]pyrene

dibenzo[a,e]pyrene

dibenzo[a,I]pyrene

dibenzo[a,h]pyrene

1-nitronaphthalene

2-nitronaphthalene

methylnitronaphthalenes

2-nitrophenyl

4-nitrophenyl

5-nitroacenaphthalene

2-nitrofluorene

9-nitroanthracene

1-nitropyrene

3-nitrofluoranthene

4-nitropyrene

7-nitrobenz[a]anthracene

6-nitrochrysene

6-nitrobenzo[a]pyrene

Table 4-31:  Toxic and Precursor emissions levels

Sources

Function (mg/g NMOG)

Benzene

1,3- Butadiene

Formaldehyde

Acetaldehyde

PAHs

N-PAHs

Diesel Exhaust

17.78

5.44

130

42.0

1.67

0.01

Diesel Fuel, Low Aromatic

0

0

0

0

9.36

ND

Diesel Vapor, Low Aromatic

0

0

0

0

9.36

ND

LPG from natural gas

0

0

0

0

0

0

LPG from petroleum

0

0

0

0

0

0

Refinery Combustion

ND

ND

124

ND

ND

ND

Power Plant Emissions

ND

ND

844

ND

ND

ND

Natural Gas IC Engine Exhaust

2.98

1.19

130

3.0

0

0

Diesel Exhaust

Diesel exhaust has been a subject of recent interest due to the fact that diesel particulates have been identified as a toxic air contaminant.  In a recent study by CE-CERT for ARB diesel exhaust was speciated.  Some earlier studies also speciated diesel exhaust, but not

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