02351nam 2200481 450 991071692040332120211122161449.0(CKB)5470000002526995(OCoLC)1285974547(EXLCZ)99547000000252699520211122d2011 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierRecent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone /by Barbara J. Mahler [and three others]Reston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2011.1 online resource (vi, 39 pages) illustrations (some color), color mapsScientific investigations report ;2011-5018"In cooperation with the City of Austin, City of Dripping Springs, Barton Springs/ Edwards Aquifer Conservation District, Lower Colorado River Authority, Hays County, and Travis County,"Includes bibliographical references (pages 36-39).Recent SewageWaterPollutionTexasBarton Springs/Edwards Aquifer Conservation DistrictCommunity development, UrbanEnvironmental aspectsTexasBarton Springs/Edwards Aquifer Conservation DistrictSewage.WaterPollutionCommunity development, UrbanEnvironmental aspectsMahler B. J(Barbara June),1959-1382534Geological Survey (U.S.),Austin (Tex.)Dripping Springs (Tex.)Barton Springs/Edwards Aquifer Conservation District (Tex.)Lower Colorado River Authority.Hays County (Tex.)Travis County (Tex.)GPOGPOBOOK9910716920403321Recent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone3474646UNINA