Howard County Near Road
Site ID: 24-027-0006 · 39.1431°N, 76.8461°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| Carbon monoxide | 1 | 2014 | 2025-09-30 |
| Carbon disulfide | 1 | ||
| Nitric oxide (NO) | 1 | 2014 | 2024-12-31 |
| Nitrogen dioxide (NO2) | 1 | 2014 | 2024-12-31 |
| Nitrogen dioxide (NO2) | 4 | 2025 | 2025-09-30 |
| Oxides of nitrogen (NOx) | 1 | 2014 | 2024-12-31 |
| Freon 113 | 1 | 2014 | 2025-06-30 |
| Freon 114 | 1 | 2014 | 2025-06-30 |
| Ethyl acetate | 1 | ||
| 1,3-Butadiene | 1 | 2014 | 2025-06-30 |
| n-Hexane | 1 | 2014 | 2025-06-30 |
| n-Heptane | 1 | 2014 | 2025-06-30 |
| Cyclohexane | 1 | 2014 | 2025-06-30 |
| 2-Propanol | 1 | ||
| Methyl tert-butyl ether | 1 | 2014 | 2025-06-30 |
| Acrolein - Unverified | 1 | 2014 | 2025-06-30 |
| Acetone | 1 | 2014 | 2025-06-30 |
| Methyl ethyl ketone | 1 | ||
| Methyl Butyl Ketone | 1 | ||
| Methyl isobutyl ketone | 1 | ||
| Ethylene oxide | 1 | ||
| Acetonitrile | 1 | ||
| Acrylonitrile | 1 | ||
| Chloromethane | 1 | 2014 | 2025-06-30 |
| Dichloromethane | 1 | 2014 | 2025-06-30 |
| Chloroform | 1 | 2014 | 2025-06-30 |
| Carbon tetrachloride | 1 | 2014 | 2025-06-30 |
| Bromoform | 1 | ||
| Trichlorofluoromethane | 1 | 2014 | 2025-06-30 |
| Chloroethane | 1 | ||
| 1,1-Dichloroethane | 1 | ||
| Methyl chloroform | 1 | 2014 | 2025-06-30 |
| Ethylene dichloride | 1 | 2014 | 2025-06-30 |
| Tetrachloroethylene | 1 | 2014 | 2025-06-30 |
| 1,1,2,2-Tetrachloroethane | 1 | 2014 | 2025-06-30 |
| Bromomethane | 1 | ||
| 1,1,2-Trichloroethane | 1 | ||
| Dichlorodifluoromethane | 1 | 2014 | 2025-06-30 |
| Trichloroethylene | 1 | 2014 | 2025-06-30 |
| 1,1-Dichloroethylene | 1 | ||
| Bromodichloromethane | 1 | ||
| 1,2-Dichloropropane | 1 | 2014 | 2025-06-30 |
| trans-1,3-Dichloropropene | 1 | 2014 | 2025-06-30 |
| cis-1,3-Dichloropropene | 1 | 2014 | 2025-06-30 |
| Dibromochloromethane | 1 | ||
| cis-1,2-Dichloroethene | 1 | ||
| Ethylene dibromide | 1 | 2014 | 2025-06-30 |
| Hexachlorobutadiene | 1 | ||
| Vinyl chloride | 1 | 2014 | 2025-06-30 |
| m/p Xylene | 1 | 2014 | 2025-06-30 |
| Benzene | 1 | 2014 | 2025-06-30 |
| Toluene | 1 | 2014 | 2025-06-30 |
| Ethylbenzene | 1 | 2014 | 2025-06-30 |
| o-Xylene | 1 | 2014 | 2025-06-30 |
| 1,3,5-Trimethylbenzene | 1 | 2014 | 2025-06-30 |
| 1,2,4-Trimethylbenzene | 1 | 2014 | 2025-06-30 |
| p-Ethyltoluene | 1 | 2014 | 2025-06-30 |
| Styrene | 1 | 2014 | 2025-06-30 |
| Chlorobenzene | 1 | 2014 | 2025-06-30 |
| 1,2-Dichlorobenzene | 1 | ||
| 1,4-Dichlorobenzene | 1 | 2014 | 2025-06-30 |
| Benzyl chloride | 1 | ||
| 1,2,4-Trichlorobenzene | 1 | ||
| Furan, tetrahydro- | 1 | 2014 | 2025-06-30 |
| Wind Speed - Resultant | 1 | 2014 | 2025-06-30 |
| Wind Direction - Resultant | 1 | 2014 | 2025-06-30 |
| Outdoor Temperature | 1 | 2014 | 2025-06-30 |
| Relative Humidity | 1 | 2014 | 2025-06-30 |
| Barometric pressure | 1 | 2014 | 2025-06-30 |
| Rain/melt precipitation | 1 | 2014 | 2025-06-30 |
| Black carbon PM2.5 STP | 1 | 2017 | 2019-11-15 |
| UV Carbon PM2.5 STP | 1 | 2017 | 2019-11-15 |
| Particle Number, Total Count | 1 | 2018 | 2025-06-30 |
| PM2.5 - Local Conditions | 3 | 2014 | 2025-09-30 |
| Black Carbon PM2.5 at 880 nm | 1 | 2019 | 2025-06-30 |
| UV Carbon PM2.5 at 370 nm | 1 | 2019 | 2025-06-30 |