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Batch sorption data, respired CO2, extractable DOC, and Raman spectra collected from an incubation with microbial necromass on feldspar or amorphous aluminum hydroxide (COPY) These datasets are from an incubation experiment with a combination of two minerals (feldspar or amorphous aluminum hydroxide), one living species of bacteria (Escherichia coli), and one added form of C (Arthrobacter crystallopoietes necromass). We characterized the sorptive properties of the minerals with batch sorption experiments using four low molecular weight C substrates (glucose, oxalic acid, glutamic acid, p-hydroxybenzoic acid): this data is provided in the SterileSorptionData file. We then conducted a 3-wk long incubation in serum vials or imaging chambers. In both incubations, feldspar (200 mg) or amorphous aluminum hydroxide (100 mg) was given 1 of 4 different treatments: (1) a water control with autoclaved... Categories: Data; Tags: Mineralogy, Raman spectroscopy, Soil Sciences, USGS Science Data Catalog (SDC), biota, All tags... carbon cycling, carbon isotope analysis, environment, mineralogy, sorption, Fewer tags Batch sorption data, respired CO2, extractable DOC, and Raman spectra collected from an incubation with microbial necromass on feldspar or amorphous aluminum hydroxide These datasets are from an incubation experiment with a combination of two minerals (feldspar or amorphous aluminum hydroxide), one living species of bacteria (Escherichia coli), and one added form of C (Arthrobacter crystallopoietes necromass). We characterized the sorptive properties of the minerals with batch sorption experiments using four low molecular weight C substrates (glucose, oxalic acid, glutamic acid, p-hydroxybenzoic acid): this data is provided in the SterileSorptionData file. We then conducted a 3-wk long incubation in serum vials or imaging chambers. In both incubations, feldspar (200 mg) or amorphous aluminum hydroxide (100 mg) was given 1 of 4 different treatments: (1) a water control with autoclaved... Categories: Data; Tags: Mineralogy, Raman spectroscopy, Soil Sciences, USGS Science Data Catalog (SDC), biota, All tags... carbon cycling, carbon isotope analysis, environment, mineralogy, sorption, Fewer tags Data set used to develop a conceptual framework for effectively anticipating water-quality changes resulting from changes in agricultural activities This USGS data release contains 2013 streamflow, baseflow, and precipitation data from three hydrologically-diverse streams in the United States used to develop a conceptual framework for effectively anticipating water-quality changes resulting from changes in agricultural activities. The framework combined generalized concepts on the movement of water, the environmental behavior of chemicals and eroded soil, and the designed functions of various agricultural activities. The framework addresses the impacts on water quality of a broad range of agricultural chemicals and sediment across a variety of hydrologic settings. • Chesterville Branch near Crumpton, Maryland, (USGS site ID - 01493112) had substantial baseflow... Categories: Data; Types: Citation; Tags: Indiana, Kansas, Maryland, National Water Quality Program, USGS Science Data Catalog (SDC), All tags... agricultural management practices, agriculture, base flow, baseflow, chemical sorptivity, chemical transformation, chemical transport, flowpath, groundwater, groundwater flow, groundwater quality, hydrologic transit times, sediment transport, sorption, water chemistry, water quality, Fewer tags Aqueous and Solid Phase Chemistry of Sequestration and Re-oxidation of Chromium in Experimental Microcosms with Sand and Sediment from Hinkley, CA Cr(VI) contaminated groundwater at Hinkley is undergoing bioremediation using added ethanol as a reductant in a volume of the aquifer defined as the In-situ Reduction Zone (IRZ). This treatment effectively reduces Cr(VI) to Cr(III) which is rapidly sequestered by sorption to aquifer particle surfaces and by co-precipitation within iron or manganese bearing minerals forming in place as reduction proceeds. Successful mitigation of the extant Cr(VI) plume is projected to require 90 to 220 years, at which time ethanol loading will likely cease. This projection assumes that Cr(VI) removal is permanent and that no Cr(III) will oxidize back to Cr(VI) in the event of changing hydrological conditions resulting in oxygen... Categories: Data; Tags: California, Geochemistry, Hinkley, San Bernardino, USGS Science Data Catalog (SDC), All tags... Water Quality, biological and physical processes, bioremediation, biota, chemical analysis, chromium, contaminant transport, geochemistry, groundwater, iron, isotopic analysis, laboratory experiments, manganese, mass spectroscopy, oxidation and reduction, sorption, time series datasets, Fewer tags