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Water-quality observations of the San Antonio segment of the Edwards aquifer, Texas, with an emphasis on processes influencing nutrient and pesticide geochemistry and factors affecting aquifer vulnerability, 2010–16 科技报告
报告编号: 70196681, 页数: 79, 2018
作者:  Opsahl, Stephen P. sopsahl@usgs.gov;  Musgrove, MaryLynn mmusgrov@usgs.gov;  Mahler, Barbara J. bjmahler@usgs.gov;  Lambert, Rebecca B. blambert@usgs.gov
Adobe PDF(4325Kb)  |  收藏  |  浏览/下载：39/22  |  提交时间：2019/11/06
The Midwest Stream Quality Assessment—Influences of human activities on streams 科技报告
报告编号: 70194321, , 2018
作者:  Van Metre, Peter C. pcvanmet@usgs.gov;  Mahler, Barbara J. bjmahler@usgs.gov;  Carlisle, Daren M. dcarlisle@usgs.gov;  Coles, James F. jcoles@usgs.gov
Adobe PDF(2593Kb)  |  收藏  |  浏览/下载：49/23  |  提交时间：2019/11/06
Coal-tar-based pavement sealcoat—Potential concerns for human health and aquatic life 科技报告
报告编号: 70169300, , 2016
作者:  Mahler, Barbara J. bjmahler@usgs.gov;  Woodside, Michael D. mdwoodsi@usgs.gov;  Van Metre, Peter C. pcvanmet@usgs.gov
Adobe PDF(6525Kb)  |  收藏  |  浏览/下载：30/9  |  提交时间：2019/11/06