Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Sonoma County Distinct Population Segment of the California Tiger Salamander (Ambystoma californiense)

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We, the U.S. Fish and Wildlife Service, announce the reopening of the comment period on our August 18, 2009, proposed designation of critical habitat for the Sonoma County Distinct Population Segment of the California tiger salamander (Ambystoma californiense) under the Endangered Species Act of 1973, as amended. We also announce revisions to the proposed critical habitat unit, as it was described in the proposed rule published in the Federal Register on August 18, 2009 (74 FR 41662), and announce the availability of the draft economic analysis for the revised proposed critical habitat designation and an amended required determinations section of the proposal. We are reopening the comment period for an additional 30 days to allow all interested parties an opportunity to comment simultaneously on the revised proposed critical habitat, the associated draft economic analysis, and the amended required determinations section. Comments previously submitted need not be resubmitted and will be fully considered in preparation of the final rule.