Carbaryl, Carbofuran, and Methomyl - National Marine Fisheries ...

Oregon is in the process of developing a Pesticide Management Plan for Water Quality
Protection, as required under FIFRA. This plan describes how government agencies and
stakeholders will collaboratively reduce pesticides in Oregon water supplies. The PSP
program is a component of this Plan, and will provide information on the effectiveness of
mitigation measures.
The Columbia Gorge Fruit Growers Association is a non-profit organization dedicated to
the needs of growers in the mid-Columbia area. The association brings together over 440
growers and 20 shippers of fruit from Oregon and Washington. It has issued a BMP
handbook for OPs, including information on alternative methods of pest control.
However, their website does not mention carbamate pesticides. The mid-Columbia area
is of particular concern, as many orchards are in close proximity to streams.
Idaho State Department of Agriculture has published a BMP guide for pesticide use. The
BMPs include eight “core” voluntary measures that will prevent pesticides from leaching
into soil and groundwater. These measures include applying pest-specific controls, being
aware of the depth to ground water, and developing an Irrigation Water Management
Plan.
Integration of the Environmental Baseline on Listed Resources
Collectively, the components of the environmental baseline for the action area include
sources of natural mortality as well as influences from natural oceanographic and climatic
features in the action area. Climatic variability may affect the growth, reproductive
success, and survival of listed Pacific salmonids in the action area. Temperature and
water level changes may lead to: (1) Reduced summer and fall stream flow, leading to
loss of spawning habitat and difficulty reaching spawning beds; (2) increased winter
flooding and disturbance of eggs; (3) changes in peak stream flow timing affecting
juvenile migration; and (4) rising water temperature may exceed the upper temperature
limit for salmonids at 64ºF (18ºC) (JISAO 2007). Additional indirect impacts include
changes in the distribution and abundance of the prey and the distribution and abundance
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