A421330008LAT/LON POINT AT CORNER OF TRAILER
Site ID: 42-133-0008 · 39.9653°N, 76.6994°W
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Monitors
| Parameter | POC | First Year | Last Sample |
|---|---|---|---|
| Suspended particulate (TSP) | 1 | 1976 | 1988-12-29 |
| Soil index (COH) | 1 | 1975 | 1984-09-30 |
| Lead (TSP) STP | 1 | 1979 | 1981-12-30 |
| Sulfate (TSP) STP | 1 | 1979 | 1981-12-30 |
| Sulfate (TSP) STP | 2 | 1976 | 1980-12-29 |
| Carbon monoxide | 1 | 1982 | 2018-02-07 |
| Carbon monoxide | 2 | 1974 | 1980-02-17 |
| Carbon disulfide | 2 | 2013 | 2018-12-28 |
| Sulfur dioxide | 1 | 1974 | 2025-07-31 |
| Sulfur dioxide | 2 | 2010 | 2025-07-31 |
| Hydrogen sulfide | 1 | 1974 | 1978-12-19 |
| Nitric oxide (NO) | 1 | 2011 | 2025-07-31 |
| Nitrogen dioxide (NO2) | 1 | 1974 | 2025-07-31 |
| Oxides of nitrogen (NOx) | 1 | 1981 | 2025-07-31 |
| Total NMOC (non-methane organic compound) | 1 | 1974 | 1981-10-29 |
| Methane | 1 | 1974 | 1981-10-29 |
| Propylene | 2 | 2013 | 2018-07-01 |
| Freon 113 | 2 | ||
| Freon 114 | 2 | ||
| 1,3-Butadiene | 2 | 2013 | 2018-12-28 |
| n-Hexane | 2 | 2013 | 2018-12-28 |
| n-Heptane | 2 | 2013 | 2018-12-28 |
| Cyclohexane | 2 | 2013 | 2018-12-28 |
| Methyl tert-butyl ether | 2 | 2013 | 2018-12-28 |
| Acrolein - Unverified | 2 | 2013 | 2018-12-28 |
| Acetone | 2 | 2013 | 2018-12-28 |
| Methyl ethyl ketone | 2 | 2013 | 2018-12-28 |
| Methyl Butyl Ketone | 2 | 2013 | 2018-12-28 |
| Methyl isobutyl ketone | 2 | 2013 | 2018-12-28 |
| Chloromethane | 2 | 2013 | 2018-12-28 |
| Dichloromethane | 2 | 2013 | 2018-12-28 |
| Chloroform | 2 | 2013 | 2018-12-28 |
| Carbon tetrachloride | 2 | 2013 | 2018-12-28 |
| Bromoform | 2 | 2013 | 2018-12-28 |
| Trichlorofluoromethane | 2 | 2013 | 2018-12-28 |
| Chloroethane | 2 | 2013 | 2018-12-28 |
| 1,1-Dichloroethane | 2 | 2013 | 2018-12-28 |
| Methyl chloroform | 2 | 2013 | 2018-12-28 |
| Ethylene dichloride | 2 | 2013 | 2018-12-28 |
| Tetrachloroethylene | 2 | 2013 | 2018-12-28 |
| 1,1,2,2-Tetrachloroethane | 2 | 2013 | 2018-12-28 |
| Bromomethane | 2 | 2013 | 2018-12-28 |
| 1,1,2-Trichloroethane | 2 | 2013 | 2018-12-28 |
| 1,1,2-Trichloro-1,2,2-trifluoroethane | 2 | 2013 | 2018-12-28 |
| Dichlorodifluoromethane | 2 | 2013 | 2018-12-28 |
| Trichloroethylene | 2 | 2013 | 2018-12-28 |
| 1,1-Dichloroethylene | 2 | 2013 | 2018-12-28 |
| Bromodichloromethane | 2 | 2013 | 2018-12-28 |
| 1,2-Dichloropropane | 2 | 2013 | 2018-12-28 |
| trans-1,3-Dichloropropene | 2 | 2013 | 2018-12-28 |
| cis-1,3-Dichloropropene | 2 | 2013 | 2018-12-28 |
| Dibromochloromethane | 2 | 2013 | 2018-12-28 |
| trans-1,2-Dichloroethylene | 2 | 2013 | 2018-12-28 |
| cis-1,2-Dichloroethene | 2 | 2013 | 2018-12-28 |
| Ethylene dibromide | 2 | 2013 | 2018-12-28 |
| Hexachlorobutadiene | 2 | 2013 | 2018-12-28 |
| Dichlorotetrafluoroethane | 2 | 2013 | 2018-12-28 |
| 1-Bromopropane | 2 | ||
| Vinyl chloride | 2 | 2013 | 2018-12-28 |
| Ozone | 1 | 1974 | 2025-06-30 |
| Ozone | 2 | ||
| m/p Xylene | 2 | 2013 | 2018-12-28 |
| Benzene | 2 | 2013 | 2018-12-28 |
| Toluene | 2 | 2013 | 2018-12-28 |
| Ethylbenzene | 2 | 2013 | 2018-12-28 |
| o-Xylene | 2 | 2013 | 2018-12-28 |
| 1,3,5-Trimethylbenzene | 2 | 2013 | 2018-12-28 |
| 1,2,4-Trimethylbenzene | 2 | 2013 | 2018-12-28 |
| p-Ethyltoluene | 2 | 2013 | 2018-12-28 |
| Styrene | 2 | 2013 | 2018-12-28 |
| Chlorobenzene | 2 | 2013 | 2018-12-28 |
| 1,2-Dichlorobenzene | 2 | 2013 | 2018-12-28 |
| 1,3-Dichlorobenzene | 2 | 2013 | 2018-12-28 |
| 1,4-Dichlorobenzene | 2 | 2013 | 2018-12-28 |
| 1,2,4-Trichlorobenzene | 2 | 2013 | 2018-12-28 |
| Furan, tetrahydro- | 2 | 2013 | 2018-12-28 |
| Wind Speed - Scalar | 1 | 1974 | 1984-09-30 |
| Wind Direction - Scalar | 1 | 1974 | 1984-09-30 |
| Outdoor Temperature | 1 | 1974 | 1984-09-30 |
| Dew Point | 1 | 1974 | 1983-12-19 |
| Temperature Difference | 1 | 1974 | 1974-06-30 |
| Sample Flow Rate- CV | 1 | 2000 | 2015-12-31 |
| Sample Flow Rate- CV | 2 | 2000 | 2015-12-26 |
| Sample Volume | 1 | 2000 | 2015-12-31 |
| Sample Volume | 2 | 2000 | 2015-12-26 |
| Ambient Min Temperature | 1 | 2000 | 2015-12-31 |
| Ambient Min Temperature | 2 | 2000 | 2015-12-26 |
| Ambient Min Temperature | 5 | 2002 | 2014-12-01 |
| Ambient Max Temperature | 1 | 2000 | 2015-12-31 |
| Ambient Max Temperature | 2 | 2000 | 2015-12-26 |
| Ambient Max Temperature | 5 | 2002 | 2014-12-01 |
| Average Ambient Temperature | 1 | 2000 | 2015-12-31 |
| Average Ambient Temperature | 2 | 2000 | 2015-12-26 |
| Average Ambient Temperature | 5 | 2002 | 2014-12-01 |
| Sample Min Baro Pressure | 1 | 2000 | 2015-12-31 |
| Sample Min Baro Pressure | 2 | 2000 | 2015-12-26 |
| Sample Min Baro Pressure | 5 | 2002 | 2014-12-01 |
| Sample Max Baro Pressure | 1 | 2000 | 2015-12-31 |
| Sample Max Baro Pressure | 2 | 2000 | 2015-12-26 |
| Sample Max Baro Pressure | 5 | 2002 | 2014-12-01 |
| Average Ambient Pressure | 1 | 2000 | 2015-12-31 |
| Average Ambient Pressure | 2 | 2000 | 2015-12-26 |
| Average Ambient Pressure | 5 | 2002 | 2014-12-01 |
| Elapsed Sample Time | 1 | 2000 | 2015-12-31 |
| Elapsed Sample Time | 2 | 2000 | 2015-12-26 |
| PM10 Total 0-10um STP | 1 | 1987 | 1987-12-23 |
| PM10 Total 0-10um STP | 2 | 1985 | 1986-12-28 |
| PM10 Total 0-10um STP | 5 | 1996 | 2015-12-31 |
| PM10 - LC | 5 | 1998 | 2000-07-31 |
| PM2.5 - Local Conditions | 1 | 1999 | 2025-07-30 |
| PM2.5 - Local Conditions | 2 | 2000 | 2016-07-29 |
| PM2.5 - Local Conditions | 3 | 2010 | 2018-02-13 |
| PM2.5 - Local Conditions | 5 | 2018 | 2019-07-16 |
| PM2.5 - Local Conditions | 7 | 2019 | 2025-07-31 |
| PM2.5 - Local Conditions | 27 | 2019 | 2023-12-31 |
| Antimony PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Arsenic PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Aluminum PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Barium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Bromine PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Cadmium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Calcium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Chromium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Cobalt PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Copper PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Chlorine PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Cerium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Cesium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Europium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Gallium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Iron PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Hafnium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Lead PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Indium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Manganese PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Iridium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Molybdenum PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Nickel PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Magnesium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Mercury PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Gold PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Lanthanum PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Niobium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Phosphorus PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Selenium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Tin PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Titanium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Samarium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Scandium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Vanadium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Silicon PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Silver PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Zinc PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Strontium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Sulfur PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Tantalum PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Terbium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Rubidium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Potassium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Yttrium PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Sodium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Zirconium PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Tungsten PM2.5 LC | 5 | 2002 | 2009-02-18 |
| Ammonium Ion PM2.5 LC | 5 | 2002 | 2014-12-01 |
| Sodium Ion Pm2.5 LC | 5 | 2002 | 2014-12-01 |
| Potassium Ion PM2.5 LC | 5 | 2002 | 2014-12-01 |
| OC CSN Unadjusted PM2.5 LC TOT | 5 | 2002 | 2009-10-16 |
| Total Nitrate PM2.5 LC | 5 | 2002 | 2014-12-01 |
| EC CSN PM2.5 LC TOT | 5 | 2002 | 2009-10-16 |
| Carbonate Carbon CSN PM2.5 LC TOT | 5 | 2002 | 2003-07-14 |
| OCX2 Carbon PM2.5 LC | 5 | 2002 | 2003-07-14 |
| OC1 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-16 |
| OC2 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-16 |
| OC3 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-16 |
| OC4 CSN Unadjusted PM2.5 LC TOT | 5 | 2003 | 2009-10-16 |
| OP CSN PM2.5 LC TOT | 5 | 2003 | 2009-10-16 |
| OC CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2014-12-01 |
| EC CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2014-12-01 |
| OC CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2014-12-01 |
| OC1 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| OC2 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| OC3 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| OC4 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| OP CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2014-12-01 |
| EC CSN_Rev Unadjusted PM2.5 LC TOR | 5 | 2009 | 2014-12-01 |
| EC1 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| EC2 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| EC3 CSN_Rev Unadjusted PM2.5 LC | 5 | 2009 | 2014-12-01 |
| OP CSN_Rev Unadjusted PM2.5 LC TOT | 5 | 2009 | 2014-12-01 |
| Sulfate PM2.5 LC | 5 | 2002 | 2014-12-01 |
| PM2.5 Total Atmospheric | 3 | 2004 | 2010-09-30 |
| Acceptable PM2.5 AQI & Speciation Mass | 5 | 2002 | 2014-09-26 |