toluene - National Park Service

Based on ecotoxicological data, and harmonization
between media, the Netherlands' Negligible
Concentration (NC) for toluene is 1% of the MPC, or
0.014 mg/kg dry weight [655].
Note: Harmonization takes into account whether
or not the MPC in one media (such as soil)
would lead to exceeding the MPC in another
media (such as air, water, or sediment) [655].
Soil criteria for evaluating the severity of
contamination under the Dutch Soil Cleanup
(Interim) Act (1982): 0.05 ppm indicates a
background concentration of toluene. 3 ppm
indicates a moderate soil contamination of toluene.
30 ppm indicates a threshold value of toluene which
requires immediate cleanup [347].
Maximum allowable concentrations of toluene in soil
in the Soviet Union (1984): 0.3 ppm [347].
State toluene cleanup guidance levels range from
0.3 to 200 ppm [806].
Soil.Plants (Soil Concentrations vs. Plants):
Oak Ridge National Lab, 1994: Risk Assessment
Screening Benchmarks for Terrestrial Plants. To be
considered unlikely to represent an ecological risk
to terrestrial plants, field concentrations in soil
should be below the following dry weight benchmark
for soil [651]:
For CAS 000108-88-3 (TOLUENE), the benchmark
is 200 mg/kg in soil (WILL and SUTER, 1994)
Soil.Invertebrates (Soil Concentrations vs.
Invertebrates):
No information found.
Soil.Wildlife (Soil Concentrations vs. Wildlife or
Domestic Animals):
No information found.
Soil.Human (Soil Concentrations vs. Humans):
EPA 1996 National Generic Soil Screening Level
(SSL) designed to be conservative and protective at
the majority of sites in the U.S. but not
necessarily protective of all known human exposure
pathways, land uses, or ecological threats [952]: