Default Values for Selected Hazardous Substances for use with the Wildlife Exposure Model in Table 749-4a
|
Toxicity Reference Value (mg/kg - d) |
|||||
| Hazardous Substance | BAFWorm | KPlant | Shrew | Vole | Robin |
| METALS: | |||||
| Arsenic III | 1.16 | 0.06 | 1.89 | 1.15 | |
| Arsenic V | 1.16 | 0.06 | 35 | 35 | 22 |
| Barium | 0.36 | 43.5 | 33.3 | ||
| Cadmium | 4.6 | 0.14 | 15 | 15 | 20 |
| Chromium | 0.49 | 35.2 | 29.6 | 5 | |
| Copper | 0.88 | 0.020 | 44 | 33.6 | 61.7 |
| Lead | 0.69 | 0.0047 | 20 | 20 | 11.3 |
| Manganese | 0.29 | 624 | 477 | ||
| Mercury, inorganic | 1.32 | 0.0854 | 2.86 | 2.18 | 0.9 |
| Mercury, organic | 1.32 | 0.352 | 0.27 | 0.064 | |
| Molybdenum | 0.48 | 1.01 | 3.09 | 2.36 | 35.3 |
| Nickel | 0.78 | 0.047 | 175.8 | 134.4 | 107 |
| Selenium | 10.5 | 0.0065 | 0.725 | 0.55 | 1 |
| Zinc | 3.19 | 0.095 | 703.3 | 537.4 | 131 |
| Pesticides | |||||
| Aldrin | 4.77 | 0.007b | 2.198 | 1.68 | 0.06 |
| Benzene hexachloride (including lindane) | 10.1 | 7 | |||
| Chlordane | 17.8 | 0.011b | 10.9 | 8.36 | 10.7 |
| DDT/DDD/DDE | 10.6 | 0.004b | 8.79 | 6.72 | 0.87 |
| Dieldrin | 28.8 | 0.029b | 0.44 | 0.34 | 4.37 |
| Endrin | 3.6 | 0.038b | 1.094 | 0.836 | 0.1 |
| Heptachlor/heptachlor epoxide | 10.9 | 0.027b | 2.857 | 2.18 | 0.48 |
| Hexachlorobenzene | 1.08 | 2.4 | |||
| Pentachlorophenol | 5.18 | 0.043b | 5.275 | 4.03 | |
| Other Chlorinated Organics | |||||
| Chlorinated dibenzofurans | 48 | 1.0E-05 | |||
| Dioxins | 48 | 0.005b | 2.2E-05 | 1.7E-05 | 1.4E-05 |
| PCB mixtures | 4.58 | 0.087b | 0.668 | 0.51 | 1.8 |
| Other Nonchlorinated Organics | |||||
| Benzo(a)pyrene | 0.43 | 0.011 | 1.19 | 0.91 | |
Table 749-5 Notes
a For hazardous substances not shown in this table, use the following default values. Alternatively, use values established from a literature survey conducted in accordance with WAC 173-340-7493(4) and approved by the department.
| KPlant: | Metals (including metalloid elements): 1.01 |
| Organic chemicals: KPlant: = 10(1.588-(0.578logKow))
Where logKow is the logarithm of the octanol-water partition coefficient. |
|
| BAFWorm: | Metals (including metalloid elements): 4.6 |
| Nonchlorinated organic chemicals: | |
| log Kow < 5: 0.7 | |
| log Kow > 5: 0.9 | |
| Chlorinated organic chemicals: | |
| log Kow < 5: 4.7 | |
| log Kow > 5: 11.8 | |
| RGAFSoil | (All receptors): 1.0 |
| Toxicity reference values (all receptors): Values established from a literature survey conducted in accordance with WAC 173-340-7493(4). | |
| Site-specific values may be substituted for default values, as described below: | |
|
KPlant: Value from a literature survey conducted in accordance with WAC 173-340-7493(4) or from empirical studies at the site. |
|
| BAFWorm: Value from a literature survey conducted in accordance with WAC 173-340-7493(4) or from empirical studies at the site. | |
| RGAFSoil: (All receptors): Values established from a literature survey conducted in accordance with WAC 173-340-7493(4). Toxicity reference values (all receptors): Default toxicity reference values provided in this table may be replaced by a value established from a literature survey conducted in accordance with WAC 173-340-7493(4). |
b Calculated from log Kow using formula in footnote a.
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