TENNESSEE DEPARTMENT OF ENVIRONMENT AND CONSERVATION DIVISION OF REMEDIATION OAK RIDGE OFFICE ENVIRONMENTAL MONITORING REPORT January 2016 – June 2017 January 2018 Pursuant to the State of Tennessee’s policy of non-discrimination, the Tennessee Department of Environment and Conservation does not discriminate on the basis of race, sex, religion, color, national or ethnic origin, age, disability, or military service in its policies, or in the admission or access to, or treatment or employment in its programs, services or activities. Equal employment Opportunity/Affirmative Action inquiries or complaints should be directed to the EEO/AA Coordinator, Office of General Counsel, William R. Snodgrass Tennessee Tower 2nd Floor, 312 Rosa L. Parks Avenue, Nashville, TN 37243, 1-888-867-7455. ADA inquiries or complaints should be directed to the ADAAA Coordinator, William Snodgrass Tennessee Tower 2nd Floor, 312 Rosa L. Parks Avenue, Nashville, TN 37243, 1-866-253-5827. Hearing impaired callers may use the Tennessee Relay Service 1-800-848-0298. To reach your local ENVIRONMENTAL ASSISTANCE CENTER Call 1-888-891-8332 or 1-888-891-TDEC This report was published with 100% federal funds DE-EM0001620 DE-EM0001621 Tennessee Department of Environment and Conservation, Authorization No. 327040 January 2018 Table of Contents Table of Contents ................................................................................................................................................ i List of Tables ...................................................................................................................................................... vi List of Figures ...................................................................................................................................................... x List of Acronyms and Common Abbreviations ............................................................................................ xvi 1.0 Introduction .................................................................................................................................................. 1 1.1 Oak Ridge Reservation Background Information ................................................................................. 1 1.2 Site Description ......................................................................................................................................... 3 2.0 Sampling and Monitoring Programs ......................................................................................................... 5 2.1 Radiological Monitoring ............................................................................................................................ 5 2.1.1 Environmental Dosimeters ................................................................................................................ 5 Introduction ................................................................................................................................................ 5 Methods and Materials ............................................................................................................................. 6 Results and Discussion .............................................................................................................................. 6 Conclusions ............................................................................................................................................... 24 2.1.2 Gamma Exposure Rate Monitoring ................................................................................................. 24 Introduction .............................................................................................................................................. 24 Methods and Materials ........................................................................................................................... 24 Results and Discussion ............................................................................................................................ 25 Conclusions ............................................................................................................................................... 29 2.1.3 Portal Monitor .................................................................................................................................... 29 Introduction .............................................................................................................................................. 29 Methods and Materials ........................................................................................................................... 30 Results and Discussion ............................................................................................................................ 30 Conclusions ............................................................................................................................................... 31 i 2.1.4 Surplus Material Verification ............................................................................................................ 32 Introduction .............................................................................................................................................. 32 Methods and Materials ........................................................................................................................... 32 Results and Discussion ............................................................................................................................ 32 Conclusions ............................................................................................................................................... 33 2.1.5 Haul Road Surveys............................................................................................................................. 33 Introduction .............................................................................................................................................. 33 Methods and Materials ........................................................................................................................... 33 Results and Discussion ............................................................................................................................ 34 Conclusions ............................................................................................................................................... 34 2.2 Biological Monitoring .............................................................................................................................. 34 2.2.1 Bat Monitoring ................................................................................................................................... 34 Introduction .............................................................................................................................................. 34 Methods and Materials ........................................................................................................................... 35 Results and Discussion ............................................................................................................................ 36 Conclusions ............................................................................................................................................... 52 2.2.2 Mercury Uptake in Biota ................................................................................................................... 52 Introduction .............................................................................................................................................. 52 Methods and Materials ........................................................................................................................... 54 Results and Discussion ............................................................................................................................ 55 Conclusions ............................................................................................................................................... 70 2.2.3 Radiological Uptake in Vegetation .................................................................................................. 72 Introduction .............................................................................................................................................. 72 Methods and Materials ........................................................................................................................... 72 Results and Discussion ............................................................................................................................ 74 ii Conclusions ............................................................................................................................................... 77 2.2.4 Benthic Macroinvertebrates ............................................................................................................ 77 Introduction .............................................................................................................................................. 77 Methods and Materials ........................................................................................................................... 78 Results and Discussion ...........................................................................................................................