Record Display for the EPA National Library Catalog
RECORD NUMBER: 9 OF 16
|OLS Field Name||OLS Field Data|
|Main Title||Asbestos-containing materials in school buildings : bulk sample analysis quality assurance program : bulk sample rounds 9, 10, 11, and blind round II /|
|Author||Pasquini, D. A. ; Parris, M. L. ; Laird, L. T.|
|CORP Author||Research Triangle Inst., Research Triangle Park, NC.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.|
|Publisher||Quality Assurance Division, Environmental Monitoring System Laboratory, U.S. Environmental Protection Agency,|
|Report Number||EPA/600/4-85/047; EPA-68-02-3767|
|Subjects||School buildings--United States--Safety measures. ; Asbestos in building--United States. ; Building materials--United States--Safety measures. ; Building materials--Safety measures. ; School buildings--Safety measures.|
|Additional Subjects||School buildings ; Asbestos ; Bulk sampling ; Insulation ; Analysis ; Quality assurance ; Microscopy ; Light(Visible radiation) ; Polarized electromagnetic radiation ; Substitutes ; Identifying ; Air pollution ; Performance evaluation ; Tables(Data) ; Cellulose ; Indoor air pollution|
|Collation||90 pages : illustrations, forms, 1 map ; 28 cm|
The report presents the results of laboratories participating in the nineth, tenth, eleventh and second blind round(s) of the bulk sample analysis quality assurance program sponsored by the U.S. Environmental Protection Agency. Two hundred fifty-four, 320, 318, and 50 laboratories which analyze bulk samples for determination of asbestos content by polarized light microscopy participated in these rounds, respectively. Laboratories received bulk samples of asbestos, asbestos substitutes or other bulk insulation materials. Three aspects of analytical results are considered: classification of a sample as either asbestos (positive) or nonasbestos (negative); identification of the specific type of asbestos present; and quantitation of the relative amount of major constituents present. A performance rating was made for each laboratory, based only on the ability to correctly classify samples. Reductions of all correct (4/4 or 3/3) scores were made only for the reporting of false positives and false negatives. Laboratories participating in rounds 9, 10, 11 and the second blind round correctly classified 92.1%, 97.2%, 94.9% and 97.9% of the samples, respectively, as an asbestos or nonasbestos containing material as described in the Federal Register, Vol. 47, No. 103, Thursday, May 27, 1982.
"July 1985." "EPA/600/4-85/047." "Contract no. 68-02-3767." Microfiche.