Chester
Site ID: 34-027-3001 · 40.7876°N, 74.6763°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| Suspended particulate (TSP) | 1 | 1978 | 1982-07-16 |
| 1,2-Dichlorotetrafluoroethane | 6 | ||
| Carbon disulfide | 6 | 2006 | 2025-06-30 |
| Sulfur dioxide | 1 | 1983 | 2025-06-30 |
| Sulfur dioxide | 3 | 2010 | 2025-06-30 |
| Nitric oxide (NO) | 1 | 1984 | 2025-06-30 |
| Nitrogen dioxide (NO2) | 1 | 1983 | 2025-06-30 |
| Oxides of nitrogen (NOx) | 1 | 2016 | 2025-06-30 |
| Propylene | 6 | 2001 | 2023-07-29 |
| Acetylene | 6 | 2001 | 2023-07-29 |
| Freon 114 | 6 | 2001 | 2025-06-30 |
| 1,3-Butadiene | 6 | 2001 | 2025-06-30 |
| n-Octane | 6 | 2001 | 2025-06-30 |
| Butyraldehyde & isobutyraldehyde | 6 | 2001 | 2011-12-29 |
| Methyl tert-butyl ether | 6 | 2001 | 2025-06-30 |
| Tert-amyl methyl ether | 6 | 2001 | 2025-06-30 |
| tert-Butyl ethyl ether | 6 | 2001 | 2025-06-30 |
| Ethyl acrylate | 6 | 2001 | 2025-06-30 |
| Methyl methacrylate | 6 | 2001 | 2025-06-30 |
| Formaldehyde | 6 | 2001 | 2025-06-30 |
| Acetaldehyde | 6 | 2001 | 2025-06-30 |
| Propionaldehyde | 6 | 2001 | 2025-06-30 |
| Acrolein - Unverified | 6 | 2005 | 2015-12-26 |
| Acrolein - Verified | 6 | 2016 | 2025-06-30 |
| Butyraldehyde | 6 | 2012 | 2025-06-30 |
| Isovaleraldehyde | 6 | 2001 | 2019-03-22 |
| Trans-Crotonaldehyde | 6 | 2001 | 2004-12-29 |
| Hexanaldehyde | 6 | 2001 | 2025-06-30 |
| Valeraldehyde | 6 | 2001 | 2025-06-30 |
| Crotonaldehyde | 6 | 2005 | 2025-06-30 |
| Acetone | 6 | 2001 | 2025-06-30 |
| Methyl ethyl ketone | 6 | 2001 | 2025-06-30 |
| Methyl isobutyl ketone | 6 | 2001 | 2025-06-30 |
| Ethylene oxide | 6 | 2018 | 2025-06-30 |
| Acetonitrile | 6 | 2001 | 2025-06-30 |
| Acrylonitrile | 6 | 2001 | 2025-06-30 |
| Chloromethane | 6 | 2001 | 2025-06-30 |
| Dichloromethane | 6 | 2001 | 2025-06-30 |
| Chloroform | 6 | 2001 | 2025-06-30 |
| Carbon tetrachloride | 6 | 2001 | 2025-06-30 |
| Bromoform | 6 | 2001 | 2025-06-30 |
| Trichlorofluoromethane | 6 | 2001 | 2025-06-30 |
| Chloroethane | 6 | 2001 | 2025-06-30 |
| 1,1-Dichloroethane | 6 | 2001 | 2025-06-30 |
| Methyl chloroform | 6 | 2001 | 2025-06-30 |
| Ethylene dichloride | 6 | 2001 | 2025-06-30 |
| Tetrachloroethylene | 6 | 2001 | 2025-06-30 |
| 1,1,2,2-Tetrachloroethane | 6 | 2001 | 2025-06-30 |
| Bromomethane | 6 | 2001 | 2025-06-30 |
| 1,1,2-Trichloroethane | 6 | 2001 | 2025-06-30 |
| 1,1,2-Trichloro-1,2,2-trifluoroethane | 6 | 2001 | 2025-06-30 |
| Dichlorodifluoromethane | 6 | 2001 | 2025-06-30 |
| Trichloroethylene | 6 | 2001 | 2025-06-30 |
| 1,1-Dichloroethylene | 6 | 2001 | 2025-06-30 |
| Bromodichloromethane | 6 | 2001 | 2025-06-30 |
| 1,2-Dichloropropane | 6 | 2001 | 2025-06-30 |
| trans-1,3-Dichloropropene | 6 | 2001 | 2025-06-30 |
| cis-1,3-Dichloropropene | 6 | 2001 | 2025-06-30 |
| Dibromochloromethane | 6 | 2001 | 2025-06-30 |
| Chloroprene | 6 | 2001 | 2025-06-30 |
| Bromochloromethane | 6 | 2001 | 2025-06-30 |
| trans-1,2-Dichloroethylene | 6 | 2001 | 2025-06-30 |
| cis-1,2-Dichloroethene | 6 | 2001 | 2025-06-30 |
| Ethylene dibromide | 6 | 2001 | 2025-06-30 |
| Hexachlorobutadiene | 6 | 2001 | 2025-06-30 |
| Vinyl chloride | 6 | 2001 | 2025-06-30 |
| Ozone | 1 | 1978 | 2025-06-30 |
| m/p Xylene | 6 | 2001 | 2025-06-30 |
| Benzene | 6 | 2001 | 2025-06-30 |
| Toluene | 6 | 2001 | 2025-06-30 |
| Ethylbenzene | 6 | 2001 | 2025-06-30 |
| o-Xylene | 6 | 2001 | 2025-06-30 |
| 1,3,5-Trimethylbenzene | 6 | 2001 | 2025-06-30 |
| 1,2,4-Trimethylbenzene | 6 | 2001 | 2025-06-30 |
| Styrene | 6 | 2001 | 2025-06-30 |
| Benzaldehyde | 6 | 2001 | 2025-06-30 |
| 2,5-Dimethylbenzaldehyde | 6 | 2001 | 2019-03-22 |
| Tolualdehydes | 6 | 2001 | 2019-03-22 |
| Chlorobenzene | 6 | 2001 | 2025-06-30 |
| 1,2-Dichlorobenzene | 6 | 2001 | 2025-06-30 |
| 1,3-Dichlorobenzene | 6 | 2001 | 2025-06-30 |
| 1,4-Dichlorobenzene | 6 | 2001 | 2025-06-30 |
| Benzyl chloride | 6 | 2001 | 2011-12-29 |
| 1,2,4-Trichlorobenzene | 6 | 2001 | 2025-06-30 |
| Wind Speed - Scalar | 1 | 1980 | 1980-09-12 |
| Wind Direction - Scalar | 1 | 1980 | 1980-09-12 |
| Outdoor Temperature | 1 | 1980 | 1980-09-12 |
| Light Absorption Coeffiecient | 5 | 2020 | 2025-05-31 |
| Solar radiation | 1 | 1984 | 2016-06-29 |
| Sample Flow Rate- CV | 1 | 1999 | 2007-09-30 |
| Sample Flow Rate- CV | 5 | 2015 | 2015-12-26 |
| Sample Volume | 1 | 1999 | 2007-09-30 |
| Sample Volume | 5 | ||
| Ambient Min Temperature | 1 | 1999 | 2007-09-30 |
| Ambient Min Temperature | 5 | 2001 | 2015-11-20 |
| Ambient Max Temperature | 1 | 1999 | 2007-09-30 |
| Ambient Max Temperature | 5 | 2001 | 2015-11-20 |
| Average Ambient Temperature | 1 | 1999 | 2024-12-28 |
| Average Ambient Temperature | 5 | 2001 | 2025-05-31 |
| Sample Min Baro Pressure | 1 | 1999 | 2007-09-30 |
| Sample Min Baro Pressure | 5 | 2001 | 2015-11-20 |
| Sample Max Baro Pressure | 1 | 1999 | 2007-09-30 |
| Sample Max Baro Pressure | 5 | 2001 | 2015-11-20 |
| Average Ambient Pressure | 1 | 1999 | 2024-12-28 |
| Average Ambient Pressure | 5 | 2001 | 2025-05-31 |
| Elapsed Sample Time | 1 | 1999 | 2007-09-30 |
| Sample Flow Rate CV - Teflon Filter | 5 | 2016 | 2025-05-31 |
| Sample Flow Rate CV - Nylon Filter | 5 | 2016 | 2025-05-31 |
| Sample Flow Rate CV - Quartz Filter | 5 | 2016 | 2025-05-31 |
| Sample Volume - Teflon Filter | 5 | 2016 | 2025-05-31 |
| Sample Volume - Nylon Filter | 5 | 2016 | 2025-05-31 |
| Sample Volume - Quartz Filter | 5 | 2016 | 2025-05-31 |
| Average Ambient Temperature for URG3000N | 5 | 2016 | 2025-05-31 |
| Average Ambient Pressure for URG3000N | 5 | 2016 | 2025-05-31 |
| PM2.5 - Local Conditions | 1 | 1999 | 2024-12-28 |
| PM2.5 - Local Conditions | 3 | 2024 | 2025-06-30 |
| Antimony PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Arsenic PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Aluminum PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Barium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Bromine PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Cadmium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Calcium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Chromium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Cobalt PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Copper PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Chlorine PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Cerium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Cesium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Europium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Gallium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Iron PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Hafnium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Lead PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Indium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Manganese PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Iridium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Molybdenum PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Nickel PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Magnesium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Mercury PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Gold PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Lanthanum PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Niobium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Phosphorus PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Selenium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Tin PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Titanium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Samarium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Scandium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Vanadium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Silicon PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Silver PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Zinc PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Strontium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Sulfur PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Tantalum PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Terbium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Rubidium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Potassium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Yttrium PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Sodium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Zirconium PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Tungsten PM2.5 LC | 5 | 2001 | 2009-02-18 |
| Chloride PM2.5 LC | 5 | 2017 | 2025-05-31 |
| Ammonium Ion PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Sodium Ion Pm2.5 LC | 5 | 2001 | 2025-05-31 |
| Potassium Ion PM2.5 LC | 5 | 2001 | 2025-05-31 |
| OC CSN Unadjusted PM2.5 LC TOT | 5 | 2001 | 2009-10-07 |
| Total Nitrate PM2.5 LC | 5 | 2001 | 2025-05-31 |
| EC CSN PM2.5 LC TOT | 5 | 2001 | 2009-10-07 |
| Carbonate Carbon CSN PM2.5 LC TOT | 5 | 2001 | 2003-07-11 |
| OCX2 Carbon PM2.5 LC | 5 | 2001 | 2003-07-11 |
| OC PM2.5 LC TOR | 5 | 2015 | 2025-05-31 |
| EC PM2.5 LC TOR | 5 | 2015 | 2025-05-31 |
| OC1 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| OC2 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| OC3 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| OC4 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| OP PM2.5 LC TOR | 5 | 2015 | 2025-05-31 |
| EC1 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| EC2 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| EC3 PM2.5 LC | 5 | 2015 | 2025-05-31 |
| OC1 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-07 |
| OC2 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-07 |
| OC3 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-07 |
| OC4 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-07 |
| OP CSN PM2.5 LC TOT | 5 | 2003 | 2009-10-07 |
| Soil PM2.5 LC | 5 | 2018 | 2025-05-31 |
| OC CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2025-05-31 |
| EC CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2025-05-31 |
| OC CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2025-05-31 |
| OC1 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| OC2 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| OC3 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| OC4 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| OP CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2025-05-31 |
| OP PM2.5 LC TOT | 5 | 2015 | 2025-05-31 |
| EC CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2025-05-31 |
| EC PM2.5 LC TOT | 5 | 2015 | 2025-05-31 |
| OC PM2.5 LC TOT | 5 | 2015 | 2025-05-31 |
| EC1 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| EC2 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| EC3 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2025-05-31 |
| OP CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2025-05-31 |
| Reconstructed Mass PM2.5 LC | 5 | 2018 | 2025-05-31 |
| Sulfate PM2.5 LC | 5 | 2001 | 2025-05-31 |
| Acceptable PM2.5 AQI & Speciation Mass | 5 | 2001 | 2014-09-26 |