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

The precise change in the conservation value of critical habitat within the ESU/DPS from the
proposed action cannot be quantified and will likely vary according to the specific designated
critical habitat. However, based on the effects described above, it is reasonably likely that the
proposed action will have a large, local, negative reduction in that conservation value of
designated critical habitat within highly developed agricultural, residential, and urban areas. The
duration, frequency, and severity of these reductions will vary according to overall numbers and
volume of applications of carbaryl, carbofuran, and methomyl in areas of designated critical
habitat, among other variables.
Therefore, we expect that the registration of carbaryl and carbofuran will adversely affect
designated critical habitat of all listed Pacific salmonids except for that of Ozette Lake sockeye
salmon, Snake River sockeye salmon, Northern California steelhead, Columbia River chum
salmon, Hood Canal summer-run chum salmon, and Oregon Coast coho salmon. We also expect
that the reregistration of methomyl will adversely affect designated critical habitat of all listed
Pacific salmonids, except for that of Ozette Lake sockeye salmon, Snake River sockeye salmon,
Northern California steelhead, Columbia River chum salmon, Hood Canal summer-run chum
salmon, Oregon Coast coho salmon, Snake River fall-run Chinook salmon, Snake River springsummer-run
Chinook salmon, California Coastal Chinook salmon, and Snake River steelhead.
Conclusion
Carbaryl and Carbofuran
After reviewing the current status of California Coastal Chinook salmon, Central Valley springrun
Chinook salmon, LCR Chinook salmon, Puget Sound Chinook salmon, Sacramento River
winter-run Chinook salmon, Snake River fall-run Chinook salmon, Snake River spring/summerrun
Chinook salmon, UCR spring-run Chinook salmon, Upper Willamette River Chinook
salmon, Central California Coast coho salmon, LCR coho salmon, Southern Oregon and
Northern Coastal California coho salmon, California Central Valley steelhead, Central California
Coast steelhead, LCR steelhead, MCR steelhead, Puget Sound steelhead, Snake River Basin
steelhead, South Central California coast steelhead, Southern California steelhead, UCR
steelhead, and Upper Willamette River steelhead, the environmental baseline for the action area,
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