Direct/Delayed Response Project: Laboratory Operations and Quality AssuranceReport for Preparation of Soils from the Mid-Appalachian Region of the United States

摘要

The Mid-Appalachian soil survey was conducted in 1988-89 as part of the U.S.Environmental Protection Agency (EPA) Direct/Delayed Response Project (DDRP). The DDRP is a research program designed to predict the long-term response of watersheds and surface waters in the United States to acidic deposition. The document describes the quality assurance program and operations of the preparation laboratory during the Mid-Appalachian survey and the results of the data quality assessment. The document was prepared primarily for the data users who will utilize the data for prediction and analysis of soil and aquatic responses to acidic deposition. Data quality was evaluated by using quality evaluation and control samples to describe the precision, accuracy, completeness, representativeness, and comparability of the data.