Field operations and quality assurance/quality control for Direct/Delayed Response Project soil mapping activities in the northeast region

The Direct/Delayed Response Project is a three-level program designed to address the concern over potential acidification of surface waters by atmospheric deposition within the United States. The mapping phase of the northwest region soil survey was conducted during the spring of 1985 as an inventory to characterize the spatial distribution of soils, vegetation, depth-to-bedrock, and lithology of watersheds located in a region of the United States believed to be susceptible to the effects of acid deposition. This document describes the planning activities and summarizes the field operations and quality assurance/quality control activities associated with the mapping of the northwest region.