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INTERIM REPORT: QUALITY ASSURANCE SUPPORT FOR THE NATIONAL ASMOSPHERIC DEPOSITION PROGRAM AND NATIONAL TRENDS NETWORK MONITORING ACTIVITIES: 1987-1990
Citation:
Bigelow, D. INTERIM REPORT: QUALITY ASSURANCE SUPPORT FOR THE NATIONAL ASMOSPHERIC DEPOSITION PROGRAM AND NATIONAL TRENDS NETWORK MONITORING ACTIVITIES: 1987-1990. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/3-89/012.
Description:
This report summarizes the quality assurance activities of the NADP/NTN network from mid-1987 through mid-1988. The report presents some accomplishments and makes recommendations for the network. The report discusses data quality issues relating to site representativeness, field versus laboratory measurements of pH, site operator turnover rates and various monitoring network reviews. The report also contains the previously released "NADP/NTN Instruction Manual for Site Operation" and the "Quality Assurance Report of NADP/NTN Deposition Monitoring for Laboratory Operations" as well as an NADP/NTN quality assurance bibliography. Recommendations emphasize the role of the quality assurance manager in coordinating quality assurance activities, the need for more integrated quality assurance evaluations, the need to standardize quaiity assurance data reporting formats and data transfer protocols in the network and the need for establishing a method for estimating overall precision and accuracy in spatial and temporal data summary statistics.