Soil Fumigant Buffer Zones and Tarps
Current as of April 2013
Updated soil fumigant product labels require fumigant users to establish a buffer zone around treated fields to reduce risks to bystanders. This page includes information that may be useful in planning and conducting soil fumigant applications using buffer zones.
Fact Sheets:These fact sheets summarize EPA’s buffer zone requirements.
- Buffer Zones (PDF) (3 pp, 276k, About PDF)
- Posting Requirements for Buffer Zones (PDF) (3 pp, 474k, About PDF)
Tarps:Tarps may reduce the size of buffer zones or are required for applications of products that contain dimethyl disulfide (DMDS).
Calculating Buffer Zones:
Buffer Zone Calculator
This EPA-developed tool is specific to each fumigant product and is based on the look-up tables on the product labels. In addition to calculating buffer zone distances, the calculator can also be used to quickly calculate buffer zone reductions through the use of credits and modifications to application parameters. Applicators must verify that the buffer zone results from the calculator are consistent with the buffer zone requirements on product labels. If there are any discrepancies, the label must be followed.
- Calculating Buffer Zones; A Guide for Applicators
Buffer Zone Sign TemplateBuffer zone signs are available where applicators purchase their products. This EPA template can also be used to meet buffer zone posting requirements.