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11 - I 1)ocuulcff Eciricvai [Code of Federal Regulations] [Title 49, Volume 3] [Revised as of October 1, 2001) From the U.S. Government Printing Office via GPO Access [CITE: 49CFR195.6j iPage 127-130] TITLE 49 -- TRANSPORTATION i. e �!,C J ui .1 CHAPTER I -- RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION -- Continued PART 7.95 -- TRANSPORTATION OF HAZARDOUS LIQUIDS BY PIPELINE- -Table of Contents Subpart A -- General Sec. 195.6 Unusually Sensitive Areas (USAs). As used in this part, a USA means a drinking water or ecological resource area that is unusually sensitive to environmental damage from a hazardous liquid pipeline release. (a) An USA drinking water resource is: (1) The water intake for. a Community Water System (CWS) or a Non - transient Non - community Water System (NTNCWS) that obtains its water supply primarily from a surface water source and does not have an adequate alternative drinking water. source; (2) The Source Water Protection Area (SWPA) for a CWS or a NTNCWS that obtains its water supply from a Class I or. Class IIA aquifer and does not have an adequate alternative drinking water source. Where a state has not yet identified the SWPA, the Wellhead Protection Area (WHPA) will be used until the state has identified the SWPA; or (3) The sole source aquifer recharge area where the sole source aquifer is a karst aquifer in nature. (b) An USA ecological resource is: (1) An area containing a critically imperiled species or ecological community; (2) A multi. - species assemblage area; (3) A migratory waterbird concentration area; (4) An area containing an imperiled species, threatened or endangered species, depleted marine mammal species, or an imperiled ecological community where the species or community is aquatic, aquatic dependent, or terrestrial with a limited range; or (5) An area containing an imperiled species, threatened or endangered species, depleted marine manurial species, or imperiled ecological community where the species or community occurrence is considered to be one of the most viable, highest quality, or in the best condition, as identified by an element occurrence ranking (EORANK) of A (excellent quality) or R (good quality). (c) As used in this part- - Adequate Alternative Drinking Water Source means a source of water that currently exists, can be used almost immediately with a minimal amount of effort and cost, involves no decline in water quality, and will meet the consumptive, hygiene, and fire fighting requirements of the existing population of impacted customers for at least one month for a surface water source of water and at least six months for a groundwater source. Aquatic or Aquatic Dependent Species or Community means a species or community that primarily occurs in aquatic, marine, or wetland habitats, as well as species that may use terrestrial habitats during all or some portion of their life cycle, but that are still closely associated with or dependent upon aquatic, marine, or wetland habitats for critical _ some �.�_u.ca1 h( tp : / /frwabsntc.access.gpo.gov/egi -bin /get- cii.cg. 8 - 9/23/02