{ "item_title" : "Streamflow and Water-Quality Conditions Including Geologic Sources and Processes Affecting Selenium Loading in the Toll Gate Creek Watershed, Aurora,", "item_author" : [" U. S. Department of the Interior "], "item_description" : "Toll Gate Creek is a perennial stream draining a suburban area in Aurora, Colorado, where selenium concentrations have consistently exceeded the State of Colorado aquatic-life standard for selenium of 4.6 micrograms per liter since the early 2000s. In cooperation with the City of Aurora, Colorado, Utilities Department, a synoptic water-quality study was performed along an 18-kilometer reach of Toll Gate Creek extending from downstream from Quincy Reservoir to the confluence with Sand Creek to develop a detailed understanding of streamflow and concentrations and loads of selenium in Toll Gate Creek. Streamflow and surface-water quality were characterized for summer low-flow conditions (July-August 2007) using four spatially overlapping synopticsampling subreaches.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/49/750/083/1497500834_b.jpg", "price_data" : { "retail_price" : "17.99", "online_price" : "17.99", "our_price" : "17.99", "club_price" : "17.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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