Environmental monitoring summary for Ames Laboratory: Calendar Year 1981

The summarized data and conclusions from the Ames Laboratory effluent monitoring program for Laboratory facilities are presented. The major areas of radiological monitoring were effluent air and water from the decommissioned Ames Laboratory Research Reactor (ALRR) site and the City of Ames, Iowa, Sewage Plant. The radioisotope of significance in the ALRR effluent air was tritium (H-3). The yearly individual dose at the ALRR exclusion fence was estimated to be 3.79 x 10-4 mRem. The estimated dose to the entire population within an 80 Km (50 mile) radius of the ALRR was 6.18 x 10-4 man-Rem. These values are 7.59 x 10-5% and 6.25 x 10-7%, respectively, of the doses derived from the concentration guides. Tritium was the predominant isotope in effluent water discharged to the City of Ames sewage system. After dilution with other waste water from the ALRR site, the potential dose was 0.086% of the dose derived from the concentration guides