Tennessee Valley Authority
Kingston Ash Slide
Stationary Monitor Results
Below are the results of the new stationary long-term air monitors that are located at the same five locations as the temporary stationary monitors. Because of the very low concentrations found in the initial sampling, the long-term monitors will be operated either every third day or every sixth day. This is similar to TDEC’s and EPA’s air quality monitoring. These monitors are more sensitive than the temporary monitors previously used and are able to measure low concentrations of metals which would not be detected before. This does not indicate an increase in air concentrations, but a better ability to measure lower concentrations.
The two items below are time series charts for PM2.5 and PM10 for the last 30 days of operation of the new monitors. All measurements to date have been below the 24-hour National Ambient Air Quality Standards.
The testing results linked below are the analytical and particulate matter results from the new stationary monitors for each day testing occurred. The results are contained in a single file.
While filters from the TISCH Hi Vol and TSP samplers are always analyzed for arsenic and thallium, filters from FRM samplers are only analyzed for arsenic and thallium when PM2.5 or PM10 measurements are greater than the 24-hr National Ambient Air Quality Standard (35 micrograms per cubic meter for PM2.5 and 150 micrograms per cubic meter for PM10). On days when PM2.5 and PM10 measurements do not exceed the standard, FRM results for arsenic and thallium are labeled "NA" indicating that these concentrations were not analyzed.
An * by the date indicates one set of results is not yet available.
Document Updated August 24, 2009 8:18 AM