Table 7.
Cancer risk from sediment, weathered oil, and tar using maximum and UCL values.
| Chemical of Concern | Oral | Dermal | Inhalation | |||
|---|---|---|---|---|---|---|
| Max | UCL | Max | UCL | Max | UCL | |
| Sediments | ||||||
| Arsenic | 2.3 × 10−6 | 1.6 × 10−6 | 1.4 × 10−6 | 1.1 × 10−6 | 5.1 × 10−10 | 3.8 × 10−10 |
| benzo[a]pyrene | 6.3 × 10−7 | 1.1 × 10−8 | 5.2 × 10−6 | 8.8 × 10−8 | 4.2 × 10−12 | 7.1 × 10−14 |
| benz[a]anthracene | 8.1 × 10−8 | 1.5 × 10−9 | 6.6 × 10−7 | 1.2 × 10−8 | 5.3 × 10−13 | 9.7 × 10−15 |
| benzo[b]fluoranthene | 6.2 × 10−8 | 1.0 × 10−9 | 5.1 × 10−7 | 8.5 × 10−9 | 4.1 × 10−13 | 6.8 × 10−15 |
| dibenz[a,h]anthracene | 4.6 × 10−8 | 1.1 × 10−9 | 3.8 × 10−7 | 8.6 × 10−9 | 3.0 × 10−13 | 7.0 × 10−15 |
| Weathered Oil | ||||||
| Arsenic | 2.3 × 10−6 | 2.5 × 10−7 | 1.5 × 10−6 | 1.6 × 10−7 | 5.3 × 10−10 | 5.9 × 10−11 |
| benzo[a]pyrene | 3.0 × 10−6 | 3.4 × 10−7 | 2.5 × 10−5 | 2.8 × 10−6 | 2.0 × 10−11 | 2.3 × 10−12 |
| benz[a]anthracene | 1.4 × 10−6 | 1.7 × 10−7 | 1.2 × 10−5 | 1.4 × 10−6 | 9.5 × 10−12 | 1.1 × 10−12 |
| benzo[b]fluoranthene | 1.9 × 10−7 | 2.1 × 10−8 | 1.5 × 10−6 | 1.7 × 10−7 | 1.2 × 10−12 | 1.4 × 10−13 |
| dibenz[a,h]anthracene | 5.6 × 10−8 | NC b | 4.6 × 10−7 | NC | 3.7 × 10−13 | NC |
| Tar | ||||||
| Arsenic | 4.1 × 10−8 | NC | 1.4 × 10−9 | NC | 9.6 × 10−12 | NC |
| benzo[a]pyrene | NA a | NC | NA | NC | NA | NC |
| benz[a]anthracene | NA | NC | NA | NC | NA | NC |
| benzo[b]fluoranthene | 2.6 × 10−8 | NC | 1.6 × 10−10 | NC | 1.7 × 10−13 | NC |
| dibenz[a,h]anthracene | NA | NC | NA | NC | NA | NC |
NA a = Not Available due to all samples measuring at BDL values or no measures for the matrix; NC b = Not Computed due to too few samples for determining the 95% URL.