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Federal Register · Uncategorized Document · Mar 30, 1994
Gerber, Acting Assistant Administrator for Research and Development. … Johnson, Acting Director, Registration Division, Office of Pesticide Programs.
Environmental Protection AgencyOffice of Research and DevelopmentAmbient Air Monitoring Reference and Equivalent Methods; Reference Method Designation
Federal Register · Uncategorized Document · Jul 11, 1994
station used for PM10 measurements equipped with a Rupprecht & Patashnick PM10 Inlet and operated for continuous 24-hour periods using the Basic, Manual, Time, Analog Input, or Serial Input programming … As a designated reference method, this method is acceptable for use by States and other air monitoring agencies under requirements of 40 CFR part 58, Ambient Air Quality Surveillance.
Environmental Protection AgencyOffice of Research and Development
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