HOLTSVILLE
Site ID: 36-103-0009 · 40.8280°N, 73.0575°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| 1,2-Epoxybutane (TSP)STP | 1 | ||
| 1,2,4-Trichlorobenzene (TSP) STP | 1 | ||
| Acetophenone (TSP) STP | 1 | ||
| Epichlorohydrin(DUP) | 1 | ||
| 2-Methylnaphthalene (TSP) STP | 1 | ||
| 1-Methylnapthalene | 1 | ||
| Naphthalene (TSP) STP | 1 | ||
| Carbon monoxide | 2 | 2000 | 2010-10-18 |
| Carbon disulfide | 1 | 2002 | 2009-12-27 |
| Sulfur dioxide | 1 | 2010 | 2020-12-31 |
| Sulfur dioxide | 2 | 2000 | 2010-10-18 |
| Sulfur dioxide | 5 | 2011 | 2020-12-31 |
| Nitric oxide (NO) | 2 | 2000 | 2010-10-18 |
| Nitrogen dioxide (NO2) | 2 | 2000 | 2010-10-18 |
| Total NMOC (non-methane organic compound) | 2 | 2000 | 2010-10-15 |
| Methane | 2 | 2000 | 2010-10-15 |
| Propane | 1 | 2002 | 2009-12-27 |
| Propylene | 1 | 2005 | 2009-12-21 |
| Freon 113 | 1 | 2002 | 2009-12-27 |
| Freon 114 | 1 | 2002 | 2009-12-27 |
| Ethyl acetate | 1 | 2005 | 2009-09-28 |
| n-Butane | 1 | 2002 | 2009-12-27 |
| 1,3-Butadiene | 1 | 2002 | 2009-12-27 |
| n-Hexane | 1 | 2002 | 2009-12-27 |
| n-Heptane | 1 | 2005 | 2009-12-27 |
| Cyclohexane | 1 | 2003 | 2009-12-27 |
| 2,2,4-Trimethylpentane | 1 | 2002 | 2009-12-27 |
| Methanol | 1 | 2002 | 2009-09-28 |
| Ethyl alcohol | 1 | 2005 | 2009-12-09 |
| 2-Propanol | 1 | 2005 | 2009-11-03 |
| 3-Chloropropene | 1 | 2002 | 2009-12-27 |
| Dichloroethyl ether | 1 | 2002 | 2009-12-27 |
| Chlorodifluoromethane | 1 | 2003 | 2009-12-21 |
| Methyl tert-butyl ether | 1 | 2002 | 2009-12-27 |
| Ethyl acrylate | 1 | 2002 | 2009-12-27 |
| Methyl methacrylate | 1 | 2002 | 2009-12-27 |
| Vinyl acetate | 1 | 2002 | 2009-12-27 |
| Acetaldehyde | 1 | 2006 | 2009-12-27 |
| Acrolein - Unverified | 1 | 2002 | 2009-12-21 |
| Butyraldehyde | 1 | 2002 | 2009-12-27 |
| Hexanaldehyde | 1 | 2002 | 2009-12-27 |
| Valeraldehyde | 1 | 2002 | 2009-12-27 |
| Decanal | 1 | 2002 | 2009-09-28 |
| Nonanal | 1 | 2002 | 2009-12-27 |
| Octanal | 1 | 2002 | 2009-12-27 |
| Methyl ethyl ketone | 1 | 2002 | 2009-12-21 |
| Methyl Butyl Ketone | 1 | 2005 | 2009-12-27 |
| Methyl isobutyl ketone | 1 | 2002 | 2009-12-27 |
| Acetophenone | 1 | 2008 | 2009-09-28 |
| 1,2-Epoxybutane | 1 | 2002 | 2009-12-27 |
| Ethylene oxide | 1 | ||
| Propylene oxide | 1 | 2002 | 2002-11-28 |
| 1,2,3-Trichloropropane | 1 | 2002 | 2009-12-27 |
| 1,3,5-Trichlorobenzene | 1 | 2002 | 2009-12-27 |
| Propionitrile | 1 | 2003 | 2009-12-27 |
| Epichlorohydrin | 1 | 2002 | 2009-12-27 |
| Acetonitrile | 1 | 2004 | 2009-12-21 |
| Acrylonitrile | 1 | 2002 | 2009-12-27 |
| 2-Nitropropane | 1 | 2002 | 2009-12-27 |
| Chloromethane | 1 | 2002 | 2009-12-27 |
| Dichloromethane | 1 | 2002 | 2009-12-27 |
| Chloroform | 1 | 2002 | 2009-12-27 |
| Carbon tetrachloride | 1 | 2002 | 2009-12-27 |
| Bromoform | 1 | 2002 | 2009-12-27 |
| Methyl Iodide | 1 | 2002 | 2009-12-27 |
| Trichlorofluoromethane | 1 | 2002 | 2009-12-27 |
| Chloroethane | 1 | 2002 | 2009-12-27 |
| 1,1-Dichloroethane | 1 | 2002 | 2009-12-27 |
| Methyl chloroform | 1 | 2002 | 2009-12-27 |
| Ethylene dichloride | 1 | 2002 | 2009-12-27 |
| Tetrachloroethylene | 1 | 2002 | 2009-12-27 |
| 1,1,2,2-Tetrachloroethane | 1 | 2002 | 2008-03-07 |
| Bromomethane | 1 | 2002 | 2009-12-27 |
| 1,1,2-Trichloroethane | 1 | 2002 | 2009-12-27 |
| Dichlorodifluoromethane | 1 | 2002 | 2009-12-27 |
| Trichloroethylene | 1 | 2002 | 2009-12-27 |
| 1,1-Dichloroethylene | 1 | 2002 | 2009-12-27 |
| Bromodichloromethane | 1 | 2005 | 2009-12-27 |
| 1,2-Dichloropropane | 1 | 2002 | 2009-12-27 |
| trans-1,3-Dichloropropene | 1 | 2002 | 2009-12-27 |
| cis-1,3-Dichloropropene | 1 | 2002 | 2009-12-27 |
| Dibromochloromethane | 1 | 2005 | 2009-12-27 |
| 1,1,1,2-Tetrachloroethane | 1 | 2002 | 2008-03-07 |
| trans-1,2-Dichloroethylene | 1 | 2004 | 2009-12-27 |
| cis-1,2-Dichloroethene | 1 | 2002 | 2009-12-27 |
| Ethylene dibromide | 1 | 2002 | 2009-12-27 |
| Hexachlorobutadiene | 1 | 2002 | 2009-12-27 |
| Vinyl chloride | 1 | 2002 | 2009-12-27 |
| Vinyl bromide | 1 | 2002 | 2009-12-27 |
| DIMETHYL SULFIDE | 1 | 2007 | 2009-12-27 |
| Ozone | 1 | 2006 | 2025-09-30 |
| Ozone | 2 | 2000 | 2010-10-15 |
| m/p Xylene | 1 | 2002 | 2009-12-27 |
| Benzene | 1 | 2002 | 2009-12-27 |
| Toluene | 1 | 2002 | 2009-12-27 |
| Ethylbenzene | 1 | 2002 | 2009-12-27 |
| o-Xylene | 1 | 2002 | 2009-12-27 |
| 1,3,5-Trimethylbenzene | 1 | 2002 | 2009-12-27 |
| 1,2,4-Trimethylbenzene | 1 | 2002 | 2009-12-27 |
| Isopropylbenzene | 1 | 2002 | 2009-12-27 |
| p-Ethyltoluene | 1 | 2005 | 2009-12-27 |
| p-Diethylbenzene | 1 | 2002 | 2009-12-27 |
| Styrene | 1 | 2002 | 2009-12-27 |
| Phenol | 1 | 2002 | 2009-12-21 |
| Benzaldehyde | 1 | 2007 | 2009-09-28 |
| Nitrobenzene | 1 | 2002 | 2009-12-27 |
| Chlorobenzene | 1 | 2002 | 2009-12-27 |
| 1,2-Dichlorobenzene | 1 | 2002 | 2009-12-27 |
| 1,3-Dichlorobenzene | 1 | 2002 | 2009-12-27 |
| 1,4-Dichlorobenzene | 1 | 2002 | 2009-12-27 |
| Benzyl chloride | 1 | 2002 | 2009-12-27 |
| 1,2,4-Trichlorobenzene | 1 | 2002 | 2009-12-27 |
| Naphthalene | 1 | 2002 | 2009-12-27 |
| 1-Methylnaphthalene | 1 | 2006 | 2009-12-27 |
| 2-Methylnaphthalene | 1 | 2006 | 2009-12-27 |
| 1,4-Dioxane | 1 | 2002 | 2009-12-27 |
| Furan, tetrahydro- | 1 | 2005 | 2009-09-28 |
| Wind Speed - Scalar | 2 | 2000 | 2010-12-31 |
| Wind Direction - Scalar | 2 | 2000 | 2010-12-31 |
| Outdoor Temperature | 2 | 2000 | 2010-12-31 |
| Relative Humidity | 2 | 2000 | 2010-12-31 |
| Solar radiation | 2 | 2000 | 2010-12-31 |
| Barometric pressure | 1 | 2006 | 2021-05-30 |
| Barometric pressure | 2 | 2000 | 2010-12-31 |
| Rain/melt precipitation | 2 | 2000 | 2010-12-31 |
| PM2.5 - Local Conditions | 4 | 2025 | 2025-11-12 |
| PM2.5 Raw Data | 1 | 2000 | 2010-11-01 |
| PM2.5 Raw Data | 3 | 2010 | 2023-12-31 |
| Acceptable PM2.5 AQI & Speciation Mass | 3 | 2010 | 2024-12-31 |