Record Display for the EPA National Library Catalog


Main Title National Atmospheric Deposition Program/National Trends Network (NADP/NTN) Site Visitation Program. October 1986 through September 1987.
Author Eaton, W. C. ; Moore, C. E. ; Murdoch, R. W. ; Shores, R. C. ; Ward, D. A. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Jan 89
Year Published 1989
Report Number EPA-68-02-4125; EPA/600/3-89/007;
Stock Number PB89-151542
Additional Subjects Acidification ; Atmospheric composition ; Deposition ; Air pollution ; States(United States) ; Sites ; Inspection ; Assessments ; Sampling ; Collecting methods ; Quality control ; Test methods ; Equipment ; Operations ; Variations ;
Library Call Number Additional Info Location Last
NTIS  PB89-151542 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 84p
The report survey visits to the NADP/NTN precipitation collection stations are part of the network's quality assurance program and are coordinated through the NADP/NTN Quality Assurance Director's office. Research Triangle Institute, under contract to EPA, has visited approximately two-thirds of the 200 NADP/NTN sites for the purposes of verifying and documenting that pre-established siting criteria are met; assessing the uniformity of sample collection, analysis, and reporting procedures; conducting quality assurance tests of the operators' equipment and procedures, and providing technical assistance and instruction. Of the approximately 120 sites visited from October 1986 through the present, most are operating within specified guidelines.