Jump to main content or area navigation.

Contact Us

Blue Grass Trail (VPI120)

Site Photos
Site Information
Site ID VPI120
Site name Blue Grass Trail
County Giles
State abbreviation VA
AQS ID 510719992
Latitude; decimal degrees 37.3232
Longitude; decimal degrees -80.4572
Elevation; m 652
Operating agency EPA
Start date 05/01/1987
Primary Land Use Agric
Terrain surrounding site Mountaintop
Distance to nearest NTN site; km .1924
Co-located NADP/AMoN Site ID VA13
View Map View Map
Graphical Results
Composition of total nitrogen deposition by species
Trends in total nitrogen deposition
Trends in wet and dry nitrogen deposition
Composition of total sulfur deposition by species
Trends in total sulfur deposition
Trends in wet and dry sulfur deposition
Trend in maximum 8-hour average ozone concentrations
Trend in 3-year average of ozone W126 index
Site History
SITE_ID : AQS id changed from 510719991 to 510719992 06-AUG-20
ELEVATION : Elevation changed from 920 meters to 652 meters. 06-AUG-20
LONGITUDE : Longitude changed from -80.5575 to -80.4572. 06-AUG-20
LATITUDE : Latitude changed from 37.3298 to 37.3232. 06-AUG-20
SITE_NAME : Site name changed from Horton Station to Blue Grass Trail. 06-AUG-20
WINDSPEED_SCALAR : Sensor unwired. 07-FEB-16
SHELTER_TEMPERATURE : A/C and Heat logger control installed. 07-FEB-16
SIGMA_THETA : Sensor unwired. 07-FEB-16
WIND_DIRECTION : Sensor unwired. 07-FEB-16
WINDSPEED : Sensor unwired. 07-FEB-16
TEMP2 : Sensor unwired. 07-FEB-16
RELATIVE_HUMIDITY : Sensor unwired. 07-FEB-16
TEMPERATURE : 9m temperature measurement with passive aspiration installed. 07-FEB-16
OZONE : New certification range for site transfer standard 10-AUG-14
WETNESS : Sensor unwired. 29-APR-14
RELATIVE_HUMIDITY : Sensor unwired. 29-APR-14
WIND_DIRECTION : Sensor unwired. 29-APR-14
SOLAR_RADIATION : Sensor unwired. 29-APR-14
TEMP2 : Sensor unwired. 29-APR-14
OZONE : ZSP order changed to SPZ. 27-FEB-14
OZONE : Foam insulation added to sample line. 27-FEB-14
OZONE : Knock-out bottle removed. 27-FEB-14
OZONE : Replacement pressure transducer installed in site analyzer. 27-FEB-12
OZONE : 10 ft. exhaust tubing added to both analyzers. 27-FEB-12
OZONE : Ozone sample line filter removed from inside the shelter. 04-AUG-11
OZONE : Ozone tubing changed from 3/8 inch to 1/4 inch. 20-FEB-11
OZONE : 40CFR Part 58 ozone site installed using independent site transfer standard. 20-FEB-11
DATALOGGER : CR3000 datalogger installed. Wiring standardized. 19-FEB-09

Jump to main content.