6. Results: a. B. Quality control data will be evaluated each month. Radiation Detection Instruments. 1. All gross alpha counters will be calibrated daily with a plutonium standard and a background determined daily. 2. All gross beta counters will be calibrated daily with a strontium-yttrium standard and a background determined daily. 3. The liguid scintillation counter will have the background determined as well as a ealibration run daily when in use. 4, The alpha spectrometer(s) will have a background, energy and efficiency determination weekly using sources traceable to National Bureau of Standards values or The Radiochemical Center, Amersham, Engiand values. 5. Vv. The gamma spectrometer(s) will have a background, energy and efficiency determined weekly, using solution traceable to NBS or AS. Reports All calibration data will be recorded and filed. Logged QC results will be available each month. A monthly quality control report will be compiled and reported to DOE/ERSP Manager with a carbon copy to Eberline Instrument Corporation, Santa Fe, New Mexico. A-5-2