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Pleasanton Gateway Environmental Checklist Under the CDFG code, Sections 1601-1607 regulate projects with divert, obstruct, or change the natural tlow, bed, channel, or bank of a river, stream, or lake. Proponents of such projects must notify DFG and enter into a streambed alteration agreement. UI~G normally exerts jurisdiction over natural streams and artificial channels that have habitat value for wildlife species. The jurisdiction extends to the bank top. Standards of Significance For purposes of this environmental document, an impact is considered significant if the proposed project would: • Adversely affect, either directly or through habitat modification, any endangered, threatened or rare species, as listed in Title 14 of the California Code of Regulations (Sections 670.5) or in Ti- tle 50, Code of Regulations (Sections 17.11 or 17.12 or their habitats (including but not limited to plants, fish, insects, animals, and birds); • Have a substantial adverse impact, either directly or through habitat modification, on any species identified as a candidate, sensitive or special-status species in local or regional plans, policies, or regulations or by the CDFG or USFWS; • Have a substantial adverse impact on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the CDFG or USFWS; • Adversely affect federally protected wetlands (including but not limited to marsh, vernal pool, coastal, etc) either individually or in combination with the known or probable impacts of other activities through direct removal, filling, hydrological interruption, or other means; • Interfere substantially with the movement of any resident or migratory fish or wildlife species or with established resident or migratory wildlife corridors, or impede the use of wildlife nursery sites; or, • Conflict with any local or regional policies or ordinances designed to protect or enhance biologi- cal resources, such as a tree preservation policy or ordinance. Potentially Significant Issues Biological Resources Would the project: a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identi- fied as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? Less Than Significant Less "than With Mitigation Significant No ^ ^ ^X b) Have a substantial adverse effect on any riparian habi- tat or other sensitive natural community identified in local or regional plans, policies, and regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? Pleasanton Gateway Lnitial Study Page 17 of 37 November 8, 2006