Testing Information

Testing Status of Agents at NTP

Asphalt Table A-2

Print this page Easy Link

http://ntp.niehs.nih.gov/go/17340

Table A-2 Exposure concentrations measured during road-paving operations

Exposure Concentration (mg/m3)
Samples
Mean
Occupation Source of exposure Number Type Range Arithmetic Geometric Reference
Screedman, rakerman Road paving using asphalt mix 215 Total particulates 8-hr TWA --- 0.3-0.7 --- Byrd & Mikkelsen (1979)
Paver operator 72 Total particulates 8-hr TWA --- 1.1 ---
Surface dressing worker Hot asphalt cutback road surface (temperature of cutback, 135°C) 9 Total particulates 8-hr TWA --- 0.8 ---
Asphalt cement pavers Road paving operations (asphalt temperature 145°-195°C) 17 Total particulates 5- to 8-hr TWA <0.1-1.2 0.3 ___ Virtamo et al. (1979)
1 Cyclohexane solubles 6-hr TWA ___ 0.3 0.3
Coarse asphalt base worker 10 Total particulate 5- to 6-hr TWA 0.4-1.1 0.6 ___
1 Cyclohexane solubles 5-hr TWA ___ 0.6 0.6
Mastic asphalt worker 16 Total particulates 2- to 4-hr TWA 0.2-4.2 1.7 ___
11 Cyclohexane solubles 0.1-2.7 1.2 ___
Unknown 18 Total particulates 4- to 7-hr TWA 0.1-3.0 1.0 ___
6 Cyclohexane solubles 4- to 7-hr TWA <0.1-1.3 0.7 ___
Surface dressing worker 4 Total particulates 5-hr TWA 0.8-2.5 1.7 ___
4 Cyclohexane solubles 4- to 7-hr TWA <0.1-0.4 0.2 ___
Oil gravel worker 8 Total particulates

4- to 7-hr TWA

0.1-1.4 0.6 ___
2 Cyclohexane solubles 5- to 6-hr TWA <0.1-0.5 0.3 0.223
Paver operator (1980) Road paving operations (asphalt mix temperature 130°-170°C) 14 Total particulates 1- to 4-hr TWA 0.15-5.61 1.26 0.795 Puzinauskas
Rakerman 7 Total particulates 1- to 4-hr TWA 0.25-3.46 0.93 0.614
Screedman 7 Total particulates 1- to 3-hr TWA 0.33-1.47 0.83 0.624
Paver operator, screedman Road paving using asphalt mix 4 Total PAHs - 11 PAHs 0.00432-0.01299 0.00827 0.0075 Malaiyandi et al. (1982)
Screed operator sulfur extended asphalt road construction 1 Total particulates ___ 4.5 4.5 Daniels & Krambololoski (1983)
Laborer 2 Total particulates 2.4-3.6 3.0 2.939
Various paving workers Hot bitumen cutback (temperature 120°-158°C) 8 Total particulates 8-hr TWA 0.2-15.1 2.6 ___ Brandt & Molyneux (1985)
7 Benzene solubles 8-hr TWA 0.1-0.3 0.2 ----
Surface dressing worker 7 Total particulates 8-hr TWA 0.2-1.5 0.6 ___
4 Benzene solubles 8-hr TWA 0.1-0.5 0.2 ___
Paver (smokers) Road paving with asphalt 4 Total PAHs 0.00075-0.00310 0.001715 0.0015 Pozzoli et al. (1985)
Paver operator Road paving using bitumens 5 Total particulates 1-hr TWA ___ 0.58 ___ Monarca et al. (1987)
5 Cyclohexane solubles 1-hr TWA ___ 0.17 ___
Screedman 12 Total particulates 1-hr TWA ___ 0.83 ___
12 Cyclohexane solubles 1-hr TWA ___ 0.16 ___
Screedman #1 (smoker) Asphalt paving crew in Florida (AC-30) 1 Total particulates 8-hr TWA ___ 0.218 0.218 Gunkel (1989)
1 Benzene solubles 8-hr TWA ___ 0.114 0.114
Screedman #2 (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.215 0.215
1 Benzene solubles 8-hr TWA ___ 0.129 0.129
Luteman (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.160 0.160
1 Benzene solubles 8-hr TWA ___ BLD ___
Roller operator (nonsmoker) 1 Total particulates 8-hr TWA __ 0.477 0.477
1 Benzene solubles 8-hr TWA __ BLD ___
Screedman #1 (smoker) Asphalt paving crew in Maryland (AC-20) 1 Total particulates 8-hr TWA __ 0.143 0.143
1 Benzene solubles 8-hr TWA __ 0.197 0.197
Screedman #2 (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.441 0.441
1 Benzene solubles 8-hr TWA ___ 0.406 0.406
Luteman (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.324 0.324
1 Benzene solubles 8-hr TWA ___ 0.376 0.376
Roller operator (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.330 0.330
1 Benzene solubles 8-hr TWA ___ 0.098 0.098
Paver operator (nonsmoker) 1 Total particulates 8-hr TWA ___ 0.903 0.903
1 Benzene solubles 8-hr TWA ___ 0.756 0.756
Foreman Paving operations (temperature or product at fume source ranged from 123° -152°C) 2 Total particulates 6-hr TWA 0.32-0.53 0.43 0.41 AI(1991)
2 Benzene solubles 6-hr TWA 0.12-0.22 0.17 0.16
Laborer 7 Total particulates 6-hr TWA 0.22-0.43 0.34 0.34
7 Benzene solubles 6-hr TWA 0.049-0.5 0.2 0.15
Screedman 10 Total particulates 6-hr TWA 0.21-0.86 0.54 0.48
10 Benzene solubles 6-hr TWA 0.03-4.4 0.73 0.28
Luteman 5 Total particulates 6-hr TWA 0.12-0.35 0.23 0.21
5 Benzene solubles 6-hr TWA <0.078-0.33 0.16 0.14
Roller operator 5 Total particulates 6-hr TWA 0.11-0.82 0.4 0.3
5 Benzene solubles 6-hr TWA <0.071-2.5 0.77 0.42
Spreader operator (screedman?) 8 Total particulates 6-hr TWA 0.14-0.86 0.54 0.46
8 Benzene solubles 6-hr TWA 0.038-1.2 0.47 0.33
Foreman Paving operation (temperature of product at fume source ranged from 135° -151°C) 3 Total particulates ~6-hr TWA 0.19-0.24 0.22 0.2189 Zey (1992a)
1 Benzene solubles ~6-hr TWA ___ BLD ___
Screedman 5 Total particulates ~6-hr TWA 0.05-0.26 0.18 0.152
3 Benzene solubles ~6-hr TWA ND-0.20 0.0466 0.0149
2 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Roller 6 Total particulates ~6-hr TWA 0.10-1.21 0.3883 0.278
4 Benzene solubles ~6-hr TWA ND-0.12 0.03 0.0039
2 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Paver operator 3 Total particulates ~6-hr TWA 0.09-0.29 0.213 0.189
2 Benzene solubles ~6-hr TWA 0.08-0.1 0.09 0.089
1 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Foreman Paving operations (temperature of product at fume source ranged from 135° - 158°C) 3 Total particulates ~6-hr TWA ND-0.44 0.22 0.047 Zey (1992b)
2 Benzene solubles ~6-hr TWA ___ BLD ___
1 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Screedman 6 Total particulates ~6-hr TWA 0.20-1.14 0.5366 0.448
4 Benzene solubles ~6-hr TWA 0.07-0.13 0.0975 0.09
2 Acetonitrile solubles

~6-hr TWA

ND-0.13 0.015 0.0089
Raker/Laborer 6 Total particulates ~6-hr TWA 0.24-4.17 1.15833 0.691
3 Benzene solubles ~6-hr TWA 0.08-0.18 0.1433 0.135
3 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Roller operator 4 Total particulates ~6-hr TWA 0.32-0.84 0.4925 0.348
3 Benzene solubles ~6-hr TWA 0.07-0.07 0.07 0.07
1 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Paver operator 3 Total particulates ~6-hr TWA 0.24-0.74 0.4966 0.449
2 Benzene solubles ~6-hr TWA 0.07-0.18 0.125 0.1112
1 Acetonitrile solubles

= 6-hr TWA

___ BLD ___
Screedman/Supervisor Paving operations (temperature of product at fume source ranged from 123°-198°C) 2 Total particulates ~6-hr TWA 0.07-0.19 0.13 0.115 Zey (1992c)
1 Benzene solubles ~6-hr TWA ___ BLD ___
1 Acetonitrile solubles

= 6-hr TWA

___ BLD ___
Laborer/Supervisor 1 Total particulates ~6-hr TWA ___ 0.15 0.15
1 Benzene solubles ~6-hr TWA ___ BLD ___
Raker/Laborer 8 Total particulates ~6-hr TWA 0.09-0.48 0.27875 0.221
5 Benzene solubles ~6-hr TWA NA-0.07 0.026 0.004
3 Acetonitrile solubles

~6-hr TWA

NA-0.05 0.033 0.031
Roller 4 Total particulates ~6-hr TWA 0.06-0.16 0.1125 0.106
3 Benzene solubles ~6-hr TWA ___ BLD ___
1 Acetonitrile solubles

~6-hr TWA

___ BLD ___
Paver operator 3 Total particulates ~6-hr TWA 0.13-0.21 0.1666 0.163
2 Benzene solubles ~6-hr TWA 0.07-0.07 0.07 0.07
1 Acetonitrile solubles

~6-hr TWA

___ 0.05 0.05


*Concentrations are reported as milligrams of asphalt fumes per cubic meter of air (mg/m3) in personal samples, except for those figures marked with an (†) which were area samples.

†Area sample



Back to top

Web page last updated on August 15, 2005