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y • • Page 2 August 18, 1994 Memo Employee TLD's - external employee exposure Rionitoring with TLDs is conducted on a quarterly basis. This results in shallow and deep dose reporting in mRem. In Plant General Air Sampling - airborne ur•snium and radium-226 concentrations are determined at selected locations at the facility, including the drum filters and the water treatment plant. Results are reported in µCifml. Breathing Zone Sampling - airborne uranium and radium-226 concentrations are determined on a °spot check" basis on facility workers. Usually done in support. of RWP activities. Results are reported in µCi/ml. Radon Daughter Sampling - radon daughter sampling is conducted on a monthly basis at five locations in the water treatment plant and at the drum filter area in the ore sorter. Results are reported in WL. Alpha Surveys - Personnel - random alpha survey checks are performed quarterly on facility workere and in support of RWP activities. Results are reported in dpm/100 cm=. Alpha Surveys - Facilities - alpha surveys are conducted in control rooms, lunch rooms, change rooms anci offices at the ore sorter and water treatment plant on ~a monthly basis. Results are reported in dpmj100 cm'. Facilities Beta/Gamma Surveys - gamma surveys are conducted on a quarterly basis in the ore sorter and water treatment plant. Beta surveys are conducted annually. Results are reported in mR/hr. Environmental Monitoring Mine Haul Road Gamma Survey - a monthly gamma :survey of the mine haul road is required during period:a of ore transport (or other RAM) to the Cotter milling facility in Canon City. Results are reported in mR/hr. Air Monitoring Particulate - continuous air sampling is conducted at three locations for ambient radionuclide concentration (U-nat, Ra 226, Th 230 and Pb 210). Two of the locations are on site, near the west and NE property boundaries. The third is off sit.=_ on Pine