SIP Approval: California (revision to the Great Basin unified air pollution control district concerning emissions of particulate matter at Owens Lake).

SIP Approval: California (revisions to the South Coast air quality management district concerning emissions of oxides of nitrogen).

SIP Approval: California (revisions to the South Coast air quality management district concerning emissions of oxides of nitrogen).

SIP Approval: California (revisions to the South Coast air quality management district concerning emissions of oxides of nitrogen).

FWS issued its ESA compensatory mitigation policy, which covers permittee-responsible mitigation, conservation banking, in-lieu fee programs, and other third-party mitigation mechanisms, and stresses the need to hold all compensatory mitigation mechanisms to equivalent and effective standards.

FWS issued its ESA compensatory mitigation policy, which covers permittee-responsible mitigation, conservation banking, in-lieu fee programs, and other third-party mitigation mechanisms, and stresses the need to hold all compensatory mitigation mechanisms to equivalent and effective standards.

FWS issued its ESA compensatory mitigation policy, which covers permittee-responsible mitigation, conservation banking, in-lieu fee programs, and other third-party mitigation mechanisms, and stresses the need to hold all compensatory mitigation mechanisms to equivalent and effective standards.

FWS and NMFS proposed revisions to the Candidate Conservation Agreements with Assurances policy under the ESA to clarify the level of conservation effort required for approval.

FWS and NMFS proposed revisions to the Candidate Conservation Agreements with Assurances policy under the ESA to clarify the level of conservation effort required for approval.

FWS and NMFS proposed revisions to the Candidate Conservation Agreements with Assurances policy under the ESA to clarify the level of conservation effort required for approval.