Download or read book Evaluation of Nitrate Sources Using Nitrogen isotope Techniques in Shallow Ground Water Within Selected Lake Basins in the Central Lakes District Polk and Highlands Counties Florida written by Ann B. Tihansky and published by . This book was released on 1997 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water resources Investigations Report written by and published by . This book was released on 1998 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of a Shallow Ground water Network to Monitor Agricultural Chemicals Lake Wales Ridge Central Florida written by Anne F. Choquette and published by . This book was released on 2000 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of a Shallow Ground water Network to Monitor Agricultural Chemicals Lake Wales Ridge Central Florida written by and published by DIANE Publishing. This book was released on with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating Ground water Exchange with Lakes Using Water budget and Chemical Mass balance Approaches for Ten Lakes in Ridge Areas of Polk and Highlands Counties Florida written by Laura A. Sacks and published by . This book was released on 1998 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Florida Public Documents written by and published by . This book was released on 1998 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identifying Sources of Subsurface Nitrate Pollution with Stable Nitrogen Isotopes written by Timothy J. Wolterink and published by . This book was released on 1979 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probability of Detecting Elevated Concentrations of Nitrate in Ground Water in a Six county Area of South central Idaho written by Kenneth D. Skinner and published by . This book was released on 2003 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variability of Nitrate Concentrations in the Shallow Ground Water in a Selected Area of the San Luis Valley South central Colorado written by Robert W. Stogner and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrate and Pesticides in Surficial Aquifers and Trophic State and Phosophorus Sources for Selected Lakes Eastern Otter Tail County West central Minnesota 1993 96 written by J. F. Ruhl and published by . This book was released on 1997 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating the Probability of Elevated Nitrate NO2 NO3 N Concentrations in Ground Water in the Columbia Basin Ground Water Management Area Washington written by Lonna M. Frans and published by . This book was released on 2000 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indicators of the Sources and Distribution of Nitrate in Water from Shallow Domestic Wells in Agricultural Areas of the New Jersey Coastal Plain written by Eric F. Vowinkel and published by . This book was released on 1995 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Nitrate Concentrations and Sources in the Elk Creek Watershed Southwestern Ohio 2003 2004 written by Thomas Schumann and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrate in Ground Water in the Great Valley Carbonate Subunit of the Potomac River Basin written by Matthew J. Ferrari and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sources of Groundwater Nitrate Revealed Using Residence Time and Isotope Methods written by and published by . This book was released on 2004 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrate concentrations approaching and greater than the maximum contaminant level (MCL) are impairing the viability of many groundwater basins as drinking water sources. Nitrate isotope data are effective in determining contaminant sources, especially when combined with other isotopic tracers such as stable isotopes of water and tritium-helium ages to give insight into the routes and timing of nitrate inputs to the flow system. This combination of techniques is demonstrated in Livermore, CA, where it is determined that low nitrate reclaimed wastewater predominates in the northwest, while two flowpaths with distinct nitrate sources originate in the southeast. Along the eastern flowpath, [delta]15N values greater than 10{per_thousand} indicate that animal waste is the primary source. Diminishing concentrations over time suggest that contamination results from historical land use practices. The other flowpath begins in an area where rapid recharge, primarily of low-nitrate imported water (identified by stable isotopes of water and a tritium-helium residence time of less than 1 year), mobilizes a significant local nitrate source, bringing groundwater concentrations up to 53 mg NO3 L−1. In this area, artificial recharge of imported water via local arroyos increases the flux of nitrate to the regional aquifer. The low [delta]15N value (3.1{per_thousand}) in this location implicates synthetic fertilizer. In addition to these anthropogenic sources, natural nitrate background levels between 15 and 20 mg NO3 L−1 are found in deep wells with residence times greater than 50 years.
Download or read book Analysis of Nitrate and Volatile Organic Compound Data for Ground Water in the Great Salt Lake Basins Utah Idaho and Wyoming 1980 98 National Water Quality Assessment Program written by Susan A. Thiros and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrate Occurrence in U S Waters and Related Questions written by John Fedkiw and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
