Table 749-5
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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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