Aurora Hills Visitors Center
Site ID: 51-013-0020 · 38.8577°N, 77.0592°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| Suspended particulate (TSP) | 1 | 1978 | 1988-12-29 |
| Carbon monoxide | 1 | 1978 | 2025-09-30 |
| Sulfur dioxide | 1 | 1978 | 1986-06-30 |
| Sulfur dioxide | 2 | ||
| Nitric oxide (NO) | 1 | 1979 | 2020-07-15 |
| Nitrogen dioxide (NO2) | 1 | 1978 | 2025-06-30 |
| Oxides of nitrogen (NOx) | 1 | 2007 | 2020-07-15 |
| Total hydrocarbons | 1 | 1981 | 1983-09-30 |
| Total NMOC (non-methane organic compound) | 1 | 1980 | 1980-09-13 |
| Total NMOC (non-methane organic compound) | 2 | 1981 | 1983-09-30 |
| Methane | 1 | 1980 | 1980-09-13 |
| Methane | 2 | 1983 | 1983-09-30 |
| Freon 113 | 1 | 1990 | 1991-09-09 |
| 1,3-Butadiene | 1 | 1990 | 1991-09-09 |
| 3-Chloropropene | 1 | 1990 | 1991-09-09 |
| Chloromethane | 1 | 1990 | 1991-09-09 |
| Dichloromethane | 1 | 1990 | 1991-09-09 |
| Chloroform | 1 | 1990 | 1991-09-09 |
| Carbon tetrachloride | 1 | 1990 | 1991-09-09 |
| Trichlorofluoromethane | 1 | 1990 | 1991-09-09 |
| Chloroethane | 1 | 1990 | 1991-09-09 |
| 1,1-Dichloroethane | 1 | 1990 | 1991-09-09 |
| Methyl chloroform | 1 | 1990 | 1991-09-09 |
| Ethylene dichloride | 1 | 1990 | 1991-09-09 |
| Tetrachloroethylene | 1 | 1990 | 1991-09-09 |
| 1,1,2,2-Tetrachloroethane | 1 | 1990 | 1991-09-09 |
| Bromomethane | 1 | 1990 | 1991-09-09 |
| 1,1,2-Trichloroethane | 1 | 1990 | 1991-09-09 |
| Dichlorodifluoromethane | 1 | 1990 | 1991-09-09 |
| Trichloroethylene | 1 | 1990 | 1991-09-09 |
| 1,1-Dichloroethylene | 1 | 1990 | 1991-09-09 |
| 1,2-Dichloropropane | 1 | 1990 | 1991-09-09 |
| trans-1,3-Dichloropropene | 1 | 1990 | 1991-09-09 |
| cis-1,3-Dichloropropene | 1 | 1990 | 1991-09-09 |
| cis-1,2-Dichloroethene | 1 | 1990 | 1991-09-09 |
| Ethylene dibromide | 1 | 1990 | 1991-09-09 |
| Hexachlorobutadiene | 1 | 1990 | 1991-09-09 |
| Vinyl chloride | 1 | 1990 | 1991-09-09 |
| Ozone | 1 | 1978 | 2025-09-30 |
| Ozone | 2 | ||
| m/p Xylene | 1 | 1990 | 1991-09-09 |
| Benzene | 1 | 1990 | 1991-09-09 |
| Toluene | 1 | 1990 | 1991-09-09 |
| Ethylbenzene | 1 | 1990 | 1991-09-09 |
| o-Xylene | 1 | 1990 | 1991-09-09 |
| 1,3,5-Trimethylbenzene | 1 | 1990 | 1991-09-09 |
| 1,2,4-Trimethylbenzene | 1 | 1990 | 1991-09-09 |
| p-Ethyltoluene | 1 | 1990 | 1991-09-09 |
| Styrene | 1 | 1990 | 1991-09-09 |
| Chlorobenzene | 1 | 1990 | 1991-09-09 |
| 1,2-Dichlorobenzene | 1 | 1990 | 1991-09-09 |
| 1,3-Dichlorobenzene | 1 | 1990 | 1991-09-09 |
| 1,4-Dichlorobenzene | 1 | 1990 | 1991-09-09 |
| Benzyl chloride | 1 | 1990 | 1991-09-09 |
| 1,2,4-Trichlorobenzene | 1 | 1990 | 1991-09-09 |
| Sample Flow Rate- CV | 1 | 1999 | 2016-07-29 |
| Sample Flow Rate- CV | 2 | 2006 | 2016-07-29 |
| Sample Volume | 1 | 1999 | 2016-07-29 |
| Sample Volume | 2 | 2006 | 2016-07-29 |
| Ambient Min Temperature | 1 | 1999 | 2016-07-29 |
| Ambient Min Temperature | 2 | 2006 | 2016-07-29 |
| Ambient Max Temperature | 1 | 1999 | 2016-07-29 |
| Ambient Max Temperature | 2 | 2006 | 2016-07-29 |
| Average Ambient Temperature | 1 | 1999 | 2016-08-31 |
| Average Ambient Temperature | 2 | 2006 | 2016-08-31 |
| Sample Min Baro Pressure | 1 | 1999 | 2016-07-29 |
| Sample Min Baro Pressure | 2 | 2006 | 2016-07-29 |
| Sample Max Baro Pressure | 1 | 1999 | 2016-07-29 |
| Sample Max Baro Pressure | 2 | 2006 | 2016-07-29 |
| Average Ambient Pressure | 1 | 1999 | 2016-08-31 |
| Average Ambient Pressure | 2 | 2006 | 2016-08-31 |
| Elapsed Sample Time | 1 | 1999 | 2016-07-29 |
| Elapsed Sample Time | 2 | 2006 | 2016-07-29 |
| PM10 Total 0-10um STP | 1 | 1989 | 1998-06-28 |
| PM2.5 - Local Conditions | 1 | 1999 | 2025-10-31 |
| PM2.5 - Local Conditions | 2 | 2006 | 2025-06-30 |