Assessment of Deposition Levels of Sulfur and Nitrogen Required to ProtectAquatic Resources in Selected Sensitive Regions of North America

摘要

The purpose of this report is to provide technical information required forassessing the feasibility of adopting one of more acid deposition standards for the protection of aquatic resources. We have identified four regions for inclusion in this assessment: western and upper midwestern United States, Florida, and southeastern Canada. For the regions identified as having sensitive or critically sensitive aquatic resources, relevant information has been compiled and evaluated regarding the relationship between deposition loading (N and S) and the estimated (or expected) extent, magnitude, and timing of aquatic effects.