Westlake
Site ID: 22-019-0008 · 30.2623°N, 93.2849°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| Carbon disulfide | 2 | ||
| Sulfur dioxide | 1 | 1992 | 2025-09-30 |
| Sulfur dioxide | 2 | 2010 | 2025-10-31 |
| Nitric oxide (NO) | 1 | 2005 | 2025-09-30 |
| Nitrogen dioxide (NO2) | 1 | 2005 | 2025-09-30 |
| Oxides of nitrogen (NOx) | 1 | 2005 | 2025-09-30 |
| Total NMOC (non-methane organic compound) | 1 | ||
| Ethane | 1 | ||
| Ethylene | 1 | ||
| Propane | 1 | ||
| Propylene | 1 | ||
| Acetylene | 1 | ||
| Freon 113 | 1 | ||
| Freon 113 | 2 | 1994 | 2003-06-20 |
| Freon 114 | 1 | ||
| Freon 114 | 2 | 1994 | 2003-06-20 |
| n-Butane | 1 | ||
| Isobutane | 1 | ||
| trans-2-Butene | 1 | ||
| cis-2-Butene | 1 | ||
| 1,3-Butadiene | 1 | ||
| 1,3-Butadiene | 2 | ||
| n-Pentane | 1 | ||
| Isopentane | 1 | ||
| 1-Pentene | 1 | ||
| cis-2-Pentene | 1 | ||
| 3-Methylpentane | 1 | ||
| n-Hexane | 1 | ||
| n-Heptane | 1 | ||
| n-Octane | 1 | ||
| n-Nonane | 1 | ||
| n-Decane | 1 | ||
| Cyclopentane | 1 | ||
| Isoprene | 1 | ||
| 2,2-Dimethylbutane | 1 | ||
| 1-Hexene | 1 | ||
| 2,4-Dimethylpentane | 1 | ||
| Cyclohexane | 1 | ||
| 3-Methylhexane | 1 | ||
| 2,2,4-Trimethylpentane | 1 | ||
| 2,3,4-Trimethylpentane | 1 | ||
| 3-Methylheptane | 1 | ||
| Methylcyclohexane | 1 | ||
| Methylcyclopentane | 1 | ||
| 2-Methylhexane | 1 | ||
| OCTENE | 1 | ||
| 1-Butene | 1 | ||
| 2,3-Dimethylbutane | 1 | ||
| 2-Methylpentane | 1 | ||
| 2,3-Dimethylpentane | 1 | ||
| DIETHYL ETHER & 2-PROPANOL | 2 | ||
| Methyl tert-butyl ether | 2 | ||
| METHYL ACRYLATE | 2 | ||
| Methyl methacrylate | 2 | ||
| Ethyl methacrylate | 2 | ||
| Vinyl acetate | 2 | ||
| Acetone | 2 | ||
| Methyl ethyl ketone | 2 | ||
| Methyl Butyl Ketone | 2 | ||
| Methyl isobutyl ketone | 2 | ||
| Acetonitrile | 2 | ||
| Acrylonitrile | 2 | ||
| 2-Nitropropane | 2 | ||
| Chloromethane | 1 | ||
| Chloromethane | 2 | 1994 | 2003-06-20 |
| Dichloromethane | 1 | ||
| Dichloromethane | 2 | 1994 | 2003-06-20 |
| Chloroform | 1 | ||
| Chloroform | 2 | 1994 | 2003-06-20 |
| Carbon tetrachloride | 1 | ||
| Carbon tetrachloride | 2 | 1994 | 2003-06-20 |
| Trichlorofluoromethane | 1 | ||
| Trichlorofluoromethane | 2 | 1994 | 2003-06-20 |
| Chloroethane | 1 | ||
| Chloroethane | 2 | 1994 | 2003-06-20 |
| 1,1-Dichloroethane | 1 | ||
| 1,1-Dichloroethane | 2 | 1994 | 2003-06-20 |
| Methyl chloroform | 1 | ||
| Methyl chloroform | 2 | 1994 | 2003-06-20 |
| Ethylene dichloride | 1 | ||
| Ethylene dichloride | 2 | 1994 | 2003-06-20 |
| Tetrachloroethylene | 1 | ||
| Tetrachloroethylene | 2 | 1994 | 2003-06-20 |
| 1,1,2,2-Tetrachloroethane | 1 | ||
| 1,1,2,2-Tetrachloroethane | 2 | 1994 | 2003-06-20 |
| Bromomethane | 1 | ||
| Bromomethane | 2 | 1994 | 2003-06-20 |
| 1,1,2-Trichloroethane | 1 | ||
| 1,1,2-Trichloroethane | 2 | 1994 | 2003-06-20 |
| Dichlorodifluoromethane | 1 | ||
| Dichlorodifluoromethane | 2 | 1994 | 2003-06-20 |
| Trichloroethylene | 1 | ||
| Trichloroethylene | 2 | 1994 | 2003-06-20 |
| 1,1-Dichloroethylene | 1 | ||
| 1,1-Dichloroethylene | 2 | 1994 | 2003-06-20 |
| 1,2-Dichloropropane | 1 | ||
| 1,2-Dichloropropane | 2 | 1994 | 2003-06-20 |
| trans-1,3-Dichloropropene | 1 | ||
| trans-1,3-Dichloropropene | 2 | 1994 | 2003-06-20 |
| cis-1,3-Dichloropropene | 1 | ||
| cis-1,3-Dichloropropene | 2 | 1994 | 2003-06-20 |
| cis-1,2-Dichloroethene | 1 | ||
| cis-1,2-Dichloroethene | 2 | ||
| 1,2-Dichloroethene(total) | 1 | ||
| 1,2-Dichloroethene(total) | 2 | 1999 | 2003-06-20 |
| 1-Propene, 3-chloro | 2 | ||
| Ethylene dibromide | 1 | ||
| Ethylene dibromide | 2 | 1994 | 2003-06-20 |
| Hexachlorobutadiene | 1 | ||
| Hexachlorobutadiene | 2 | 1994 | 2003-06-20 |
| Vinyl chloride | 1 | ||
| Vinyl chloride | 2 | 1994 | 2003-06-20 |
| n-Undecane | 1 | ||
| 2-Methylheptane | 1 | ||
| Ozone | 1 | 1992 | 2014-12-31 |
| m/p Xylene | 1 | ||
| m/p Xylene | 2 | 1994 | 2003-06-20 |
| Benzene | 1 | ||
| Benzene | 2 | 1994 | 2003-06-20 |
| Toluene | 1 | ||
| Toluene | 2 | 1994 | 2003-06-20 |
| Ethylbenzene | 1 | ||
| Ethylbenzene | 2 | 1994 | 2003-06-20 |
| o-Xylene | 1 | ||
| o-Xylene | 2 | 1994 | 2003-06-20 |
| 1,3,5-Trimethylbenzene | 1 | ||
| 1,3,5-Trimethylbenzene | 2 | 1994 | 2003-06-20 |
| 1,2,4-Trimethylbenzene | 1 | ||
| 1,2,4-Trimethylbenzene | 2 | 1994 | 2003-06-20 |
| n-Propylbenzene | 1 | ||
| Isopropylbenzene | 1 | ||
| o-Ethyltoluene | 1 | ||
| m-Ethyltoluene | 1 | ||
| p-Ethyltoluene | 1 | ||
| p-Ethyltoluene | 2 | ||
| m-Diethylbenzene | 1 | ||
| p-Diethylbenzene | 1 | ||
| Styrene | 1 | ||
| Styrene | 2 | 1994 | 2003-06-20 |
| 1,2,3-Trimethylbenzene | 1 | ||
| Nitrobenzene | 2 | ||
| Chlorobenzene | 1 | ||
| Chlorobenzene | 2 | 1994 | 2003-06-20 |
| 1,2-Dichlorobenzene | 1 | ||
| 1,2-Dichlorobenzene | 2 | 1994 | 2003-06-20 |
| 1,3-Dichlorobenzene | 1 | ||
| 1,3-Dichlorobenzene | 2 | 1994 | 2003-06-20 |
| 1,4-Dichlorobenzene | 1 | ||
| 1,4-Dichlorobenzene | 2 | 1994 | 2003-06-20 |
| Benzyl chloride | 1 | ||
| Benzyl chloride | 2 | 1994 | 2003-06-20 |
| 1,2,4-Trichlorobenzene | 1 | ||
| 1,2,4-Trichlorobenzene | 2 | 1994 | 2003-06-20 |
| Furan, tetrahydro- | 2 | ||
| Outdoor Temperature | 3 | 2022 | 2023-12-31 |
| Average Ambient Temperature | 1 | 2024 | 2025-07-09 |
| Average Ambient Pressure | 1 | 2024 | 2025-07-09 |
| PM10 Total 0-10um STP | 3 | 2022 | 2025-09-30 |
| PM2.5 - Local Conditions | 1 | 2024 | 2025-06-30 |
| PM2.5 - Local Conditions | 3 | 2022 | 2025-09-30 |
| PM2.5 - Local Conditions | 23 | 2022 | 2024-02-29 |
| Acceptable PM2.5 AQI & Speciation Mass | 3 | 2000 | 2022-03-31 |