DOE/ORO/2327 Oak Ridge Reservation Annual Site Environmental ...

Oak Ridge Reservation
3-22 East Tennessee Technology Park
Fig. 3.10. Ambient air monitoring station.
All base and supplemental stations collect continuous samples for radiological and selected metals
analyses. Inorganic analytical techniques are used to test samples for the following nonradiological
pollutants: As, Be, Cd, Cr, Pb, and total uranium. Radiological analyses of samples from the ETTP
stations test for the isotopes 237 Np, 238 Pu, 239 Pu, 99 Tc, 234 U, 235 U, 236 U, and 238 U; samples from ORR
stations are analyzed for 234 U, 235 U, and 238 U.
Figures 3.11 through 3.15 illustrate the air concentrations of arsenic (As), beryllium (Be), cadmium
(Cd), chromium (Cr), and Pb for the past 5 years, based on quarterly composites of weekly continuous
samples. All samples were analyzed by the inductively coupled plasma-mass spectrometer (ICP-MS)
analytical technique. The results are compared with any applicable air quality standards for each
pollutant. Also, the minimum detectable concentration is shown for all metals, including uranium. The
annualized levels of As, Be, Cd, and Pb all show results well below the indicated annual standards.
Results for 2009 are slightly higher than results reported for 2008 but are within historical trends. The
chromium results are conservatively compared with the EPA standard for hexavalent chromium. Lead
measurement results indicate that all levels are well within the National Ambient Air Quality Standard
(NAAQS) of 0.15 µg/m3.