Features Geothermal
NGWA to host webinar

August 3, 2011, Westerville, OH – The National Ground Water Association (NGWA) will host an online webinar on the use of nitrogen-15 and carbon 13 to trace NO3- and NH4+ contamination and attenuation.

The webinar, scheduled for Sept. 27 at 11:00 am ET, will address:

• Recharge and pathways of ground water and nutrients in agricultural watersheds;
• Redox goechemistry and the nitrogen cycle;
• Nitrogen-15 in NO3- and NH4+ from agricultural, domestic and industrial sources; and
• Sampling and analysis of nitrogen species for isotope analysis.

The webinar will be presented by Ian Clark, PhD, professor of isotope hydrology at the University of Ottawa.

For more information, visit www.ngwa.org.