Contact Information Country: USAWebsite: List of Projects Aquatic Acidification Index pilot study to measure airborne sulfur and nitrogen oxide concentrationsDetailsProject PageProject Start Date: 2012-12-20Project End Date: OngoingPeople:Rich ScheffeDatasets:Castnet Filter Pack Weekly ConcentrationsNADP Average Ammonia Concentration- more than one samplerNADP Ammonia Concentration- one sampler