Testing Status of Agents at NTP
Asphalt Table A-2
Table A-2 Exposure concentrations measured during road-paving operations
Exposure Concentration (mg/m3) |
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---|---|---|---|---|---|---|---|
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
Web page last updated on August 15, 2005