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

Oak Ridge Reservation
Number of taxa/sample
Number of EPT taxa/sample
3-74 East Tennessee Technology Park
45
40
35
30
25
20
15
10
5
0
20
15
10
5
0
Dechlorination
Mean Taxonomic Richness
MIK 0.4
MIK 0.7
MIK 0.8
MIK 1.4
Taxonomic Richness of Pollution-Intolerant Taxa
Dechlorination
MIK 0.4
MIK 0.7
MIK 0.8
MIK 1.4
Trench construction
Trench
construction
87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09
Year
Fig. 3.53. Temporal trends in mean total taxonomic richness (top) and mean taxonomic
richness pollution-intolerant taxa (EPT, or Ephemeroptera, Plecoptera, and Trichoptera) in
Mitchell Branch based on samples collected with ORNL protocols in April of each year,
1987–2009.
remained unchanged. Wide swings in these three parameters are typical of streams that have been
severely impacted and are still in the process of recovering. The stream is still dominated by more tolerant
fish species though, while the condition of the fish community has not yet reached a stable condition
typical of less impacted streams in the area.
3.7. Quality Assurance Program
BJC is committed to developing, implementing, and maintaining a formal QA program that ensures
the highest standards of performance by empowering employees in their respective areas of responsibility
through fostering a “no fault” attitude toward the identification and reporting of quality deficiencies. The
Quality Program provides the framework for a results-oriented management system that focuses on