Tennessee Department of Environment and Conservation - DOE Oversight Division. Status Report to the Public - December 1999 Page: 35 of 72
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Environmental Monitoring & Compliance
from the Reservation. All told, 22 sites were sampled in In fiscal year 1999, the
Division continued to sample including 15 tributary sites added to the program
in 1997. Twenty of the 22 sites were chosen to allow the Division to detect cont-
amination from DOE. The two remaining sites are located upstream from the
ORR and serve to provide background data. The original seven sites are located
on the Clinch River and have been sampled since 1993.
Many factors cause contaminant levels in streams to
fluctuate greatly. Contaminants can be diluted, they can Because the Cli
be concentrated, they can be absorbed by sediments or
vegetation, and they can interact chemically with geo- large and dilutes
logical substrates. In addition, contaminant sources of contaminants fr
contamination may be only intermittent. Because the ORR, the Divisio
Clinch River is large and dilutes contaminants from the expect to find si
ORR, the Division does not expect to find significant pollution levels.
pollution levels in surface water grab samples. The sam-
pling data do, however, set up a baseline for observing
changes over time and for evaluating the impact of unplanned releases or acci-
The tributary sites and the original river sites were sampled twice in 1998.
Samples were analyzed and compared with Tennessee Water Quality Criteria.
The Division has not observed substantial concentrations of pollutants coming
from the Reservation.
Sediment analysis is a key tool in evaluating the environmental quality of
rivers, streams, lakes, and impoundments. Samples can be subjected to a variety
of chemical, physical, toxicological and biological tests.
The Division conducts an ambient sediment program that includes 21 sam-
pling sites. Six are located on the Clinch River and have been sampled since
1994. The other 15 are located on ORR tributaries of the Clinch River. This sedi-
ment sampling program monitors shallow sediment only.
Samples were analyzed for organic, inorganic and radiological contaminants,
and the results were compared with standards developed for DOE's Oak Ridge
Operations. These Preliminary Remediation Goals (PRGs) are based on accepted
EPA guidance and protocol. Since there are no State or federal regulatory guide-
lines for sediment quality, these standards are used to assess sediment quality on
nch River is
n does not
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Tennessee Department of Environment and Conservation - DOE Oversight Division. Status Report to the Public - December 1999, report, December 1, 1999; United States. (https://digital.library.unt.edu/ark:/67531/metadc724924/m1/35/: accessed April 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.