Pesticides and Groundwater Quality Issues and Problems in Four States (1986) / Chapter Skim
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5 Federal Agencies
5 Federal Agencies
Pages 98-104
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From page 98... ...
The EPA requires submission of some data within 6 months and field dissipation study results within 2 years after receipt of the request. This data call-in is in addition to requests for environmental fate data for 51 pesticides undergoing active development of standards or having Completed registration standards (Table 5-2)
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From page 99... ...
Methyl bromide Methy, isothiocyanate Metribuzin Mobam Mevinphos (Phosdrin) Molinate Monocrotophos (Azodin)
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From page 100... ...
In the first stage, counties will be ranked according to (1) their estimated pesticide usage (computed by using Doane Marketing data on pesticide usage and county-level crop acreage data from the U.S.
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From page 101... ...
to groundwater and drinking-water contamination; · Estimate human exposure to these chemicals via drinking water contaminated by normal use. The OPP believes the development of these data can provide a basis for drinking-water standards and health advisories, label restrictions, regulatory decisions to restrict or ban the use of specific pesticides, and the assessment of the environmental impacts of innovative agricultural practices such as no-till farming and chemigation.
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From page 102... ...
The advantages of such screening techniques include the more rapid development of a broad data base, less exposure in sample acquisition and sample analysis, and more comprehensive water quality assessments. Such techniques involve tradeoffs, however, including more tome required for sample preparation before analysis, greater expense associated with increased laboratory preparation, and less sensitivity of the analysis.
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From page 103... ...
to develop pesticide labels that indicate the potential for a specif ic pesticide to leach to groundwater. The OF was to develop pesticide labeling that would be relevant to growers, indicate potential impacts on groundwater quality, and somehow factor in local soil and hydrologic conditions (see Pesticide and Toxic Chemical News, November 21, 1984, p.
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From page 104... ...
In addition to contamination of groundwater caused by pesticides, the task force will consider questions about groundwater quantity (amount available as a resource) and salinity.
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