 Wildland
Fire Chemicals
Evaluation of Wildland Fire Chemicals
Standard Test Procedures
STP 1.4—Biodegradability
Summary:
Organic compounds such as those found in Class A Foams and Water
Enhancers are frequently very stable. To help protect the environments
in which they are used, some means to assess their relative stability
is needed. Natural processes such as biodegradation and photodegradation
may break down these products in natural environments.
This procedure
covers the biodegradation test that uses non-acclimated bacteria
as this would be the likely situation in the case of an application
in the wildland.
A sample of the product that was submitted to the Forest Service
for qualification testing is sent to an approved testing lab. Results
are sent back to the
Forest Service.
The Project Leader for Fire Chemicals compiles
the results and prepares a letter to the supplier showing the performance
of the submitted
product. A copy of the lab report is also provided to the supplier.
Method:
- All testing shall be performed in accordance with protocols of the
U.S. Environmental Protection Agency (EPA), Office of Prevention,
Pesticides, and Toxic Substances (OPPTS).
- Laboratories performing
the testing
shall comply with the EPA established Good Laboratory Practices.
References:
- U.S. Environmental Protection Agency, Office of Prevention,
Pesticides, and Toxic Substances. Ready Biodegradability; 835.3110(m),
Carbon Dioxide Evolution Test.
- Organization for Economic Cooperation
and Development. Ready Biodegradability; 301B, CO2 Evolution (Modified
Sturm
Test).
- U.S. Environmental Protection Agency, Federal Insecticide,
Fungicide, and Rodenticide Act. Good Laboratory Practices; 40
CFR 160
- U.S. Environmental
Protection Agency, Toxic Substances Control Act. Good Laboratory
Practices, 40 CFR 792
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