Essex

Site ID: 24-005-3001 · 39.3108°N, 76.4744°W

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Monitors

ParameterPOCFirst YearLast Sample
Suspended particulate (TSP)119721990-09-26
Benzene soluble organics (TSP)119721977-09-01
Soil index (COH)119671978-12-30
Beta radiation (TSP)119721972-01-13
Cadmium (TSP) STP119771983-09-01
Chromium (TSP) STP119771983-09-01
Lead (TSP) STP119771982-08-01
Nitrate (TSP) STP119771984-03-25
Sulfate (TSP) STP119771984-03-25
Benzo[a]pyrene (TSP) STP119771983-06-01
Water Insol Wt (SP)119721976-05-01
Carbon monoxide119672025-09-30
Carbon monoxide219731983-12-20
Carbon disulfide120062010-12-28
Sulfur dioxide119722025-09-30
Sulfur dioxide220102025-09-30
Sulfur dioxide319741977-09-28
Sulfation rate119721974-04-01
Reactive oxides of nitrogen (NOy)120182025-09-30
Nitric oxide (NO)119801984-03-31
Nitric oxide (NO)219932017-12-31
Nitric oxide (NO)320182025-09-30
Nitrogen dioxide (NO2)119721978-09-30
Nitrogen dioxide (NO2)219802017-12-31
Nitrogen dioxide (NO2)319741979-12-29
Nitrogen dioxide (NO2)420182025-09-30
Oxides of nitrogen (NOx)119802017-12-31
NOy - NO120182025-09-30
Sum of PAMS target compounds119972018-08-31
Sum of PAMS target compounds219992025-03-26
Total hydrocarbons119671983-10-01
Total NMOC (non-methane organic compound)119801980-09-13
Total NMOC (non-methane organic compound)219731983-10-01
Total NMOC (non-methane organic compound)319932025-08-31
Total NMOC (non-methane organic compound)419992025-03-26
n-Dodecane120002025-08-31
n-Dodecane220022025-03-26
Methoxychlor1
Methane119801980-09-13
Methane219771983-09-30
Ethane119932025-08-31
Ethane219992025-03-26
Ethylene119932025-08-31
Ethylene219992025-03-26
Propane119932025-08-31
Propane219992025-03-26
Propylene119932025-08-31
Propylene219992025-03-26
Propylene3
Acetylene119932025-08-31
Acetylene219992025-03-26
Freon 113119932025-03-26
Freon 114119932025-03-26
Ethyl acetate120062010-12-28
n-Butane119932025-08-31
n-Butane219992025-03-26
Isobutane119932025-08-31
Isobutane219992025-03-26
trans-2-Butene119932025-08-31
trans-2-Butene219992025-03-26
cis-2-Butene119932025-08-31
cis-2-Butene219992025-03-26
1,3-Butadiene119932025-03-26
1,3-Butadiene220192025-08-31
n-Pentane119932025-08-31
n-Pentane219992025-03-26
Isopentane119932025-08-31
Isopentane219992025-03-26
1-Pentene119932025-08-31
1-Pentene219992025-03-26
trans-2-Pentene119932025-08-31
trans-2-Pentene219992025-03-26
cis-2-Pentene119932025-08-31
cis-2-Pentene219992025-03-26
2-Methyl-2-butene119931994-03-31
3-Methylpentane119932025-08-31
3-Methylpentane219992025-03-26
n-Hexane119932025-08-31
n-Hexane219992025-03-26
n-Hexane320062025-03-26
n-Heptane119932025-08-31
n-Heptane219992025-03-26
n-Heptane320062025-03-26
n-Octane119932025-08-31
n-Octane219992025-03-26
4-Methyl-1-pentene119931994-12-23
n-Nonane119932025-08-31
n-Nonane219992025-03-26
n-Decane119932025-08-31
n-Decane219992025-03-26
Cyclopentane119932025-08-31
Cyclopentane219992025-03-26
Isoprene119932025-08-31
Isoprene219992025-03-26
2,2-Dimethylbutane119932025-08-31
2,2-Dimethylbutane219992025-03-26
1-Hexene120002025-08-31
1-Hexene219992025-03-26
2-Methyl-1-pentene119931997-09-30
2-Methyl-1-pentene2
2,4-Dimethylpentane119932025-08-31
2,4-Dimethylpentane219992025-03-26
Cyclohexane119932025-08-31
Cyclohexane219992025-03-26
Cyclohexane320062025-03-26
3-Methylhexane119932025-08-31
3-Methylhexane219992025-03-26
2,2,4-Trimethylpentane119932025-08-31
2,2,4-Trimethylpentane219992025-03-26
2,3,4-Trimethylpentane119932025-08-31
2,3,4-Trimethylpentane219992025-03-26
3-Methylheptane119932025-08-31
3-Methylheptane219992025-03-26
alpha.-Pinene1
alpha.-Pinene220182025-03-26
alpha.-Pinene320192025-08-31
beta.-Pinene1
beta.-Pinene220182025-03-26
beta.-Pinene320192025-08-31
Methylcyclohexane119932025-08-31
Methylcyclohexane219992025-03-26
Methylcyclopentane119932025-08-31
Methylcyclopentane219992025-03-26
2-Methylhexane119932025-08-31
2-Methylhexane219992025-03-26
1-Butene119932025-08-31
1-Butene219992025-03-26
3-Methyl-1-butene119931994-12-23
Cyclopentene119931994-12-23
2,3-Dimethylbutane119932025-08-31
2,3-Dimethylbutane219992025-03-26
2-Methylpentane119932025-08-31
2-Methylpentane219992025-03-26
trans-2-Hexene119931994-12-23
cis-2-Hexene119931994-12-23
2,3-Dimethylpentane119932025-08-31
2,3-Dimethylpentane219992025-03-26
Ethyl alcohol1
2-Propanol120062010-12-28
Methyl tert-butyl ether120062025-03-26
Vinyl acetate1
Formaldehyde119942018-09-23
Formaldehyde219942017-09-28
Formaldehyde620182025-04-19
Formaldehyde820192025-06-30
Acetaldehyde119942018-09-23
Acetaldehyde219942017-09-28
Acetaldehyde620182025-04-19
Acetaldehyde820192025-06-30
Propionaldehyde119972018-09-23
Propionaldehyde219972017-09-28
Propionaldehyde620182025-04-19
Propionaldehyde820192025-06-30
Acrolein - Unverified119972018-03-27
Acrolein - Unverified219972017-09-28
Acrolein - Unverified320072025-03-26
Butyraldehyde620182025-04-19
Butyraldehyde820192025-06-30
Isovaleraldehyde620182019-03-22
Hexanaldehyde620182025-04-19
Hexanaldehyde820192025-06-30
Valeraldehyde620182025-04-19
Valeraldehyde820192025-06-30
Crotonaldehyde620182025-04-19
Crotonaldehyde820192025-06-30
Acetone119942018-09-23
Acetone219942017-09-28
Acetone320062025-03-26
Acetone620182025-04-19
Acetone820192025-06-30
Methyl ethyl ketone120002018-09-23
Methyl ethyl ketone220002017-09-28
Methyl ethyl ketone320062010-12-28
Methyl ethyl ketone620182025-04-19
Methyl ethyl ketone820192025-06-30
Methyl Butyl Ketone120062010-12-28
Methyl isobutyl ketone120002018-09-23
Methyl isobutyl ketone220002017-09-16
Methyl isobutyl ketone320062010-12-28
Acetonitrile120092010-12-28
Acrylonitrile120042010-12-28
Chloromethane119932025-03-26
Dichloromethane119932025-03-26
Chloroform119932025-03-26
Carbon tetrachloride119932025-03-26
Bromoform120062010-12-28
Trichlorofluoromethane119932025-03-26
Chloroethane119932010-12-28
1,1-Dichloroethane119932010-12-28
Methyl chloroform119932025-03-26
Ethylene dichloride119932025-03-26
Tetrachloroethylene119932025-03-26
1,1,2,2-Tetrachloroethane119932025-03-26
Bromomethane119932010-12-28
1,1,2-Trichloroethane119932010-12-28
Dichlorodifluoromethane119932025-03-26
Trichloroethylene119932025-03-26
1,1-Dichloroethylene119932010-12-28
Bromodichloromethane120062010-12-28
1,2-Dichloropropane119932025-03-26
trans-1,3-Dichloropropene119932025-03-26
cis-1,3-Dichloropropene119932025-03-26
Dibromochloromethane120062010-12-28
trans-1,2-Dichloroethylene120062010-12-28
cis-1,2-Dichloroethene119932010-12-28
Ethylene dibromide119932025-03-26
Hexachlorobutadiene119932010-12-28
Vinyl chloride119932025-03-26
n-Undecane119932025-08-31
n-Undecane219992025-03-26
2-Methylheptane119932025-08-31
2-Methylheptane219992025-03-26
Ozone119732025-10-31
m/p Xylene119932025-08-31
m/p Xylene219932025-03-26
m/p Xylene319992025-03-26
Benzene119932025-08-31
Benzene219932025-03-26
Benzene319992025-03-26
Toluene119932025-08-31
Toluene219932025-03-26
Toluene319992025-03-26
Ethylbenzene119932025-08-31
Ethylbenzene219932025-03-26
Ethylbenzene319992025-03-26
o-Xylene119932025-08-31
o-Xylene219932025-03-26
o-Xylene319992025-03-26
m-Xylene1
p-Xylene1
1,3,5-Trimethylbenzene119932025-08-31
1,3,5-Trimethylbenzene219932025-03-26
1,3,5-Trimethylbenzene319992025-03-26
1,2,4-Trimethylbenzene119932025-08-31
1,2,4-Trimethylbenzene219932025-03-26
1,2,4-Trimethylbenzene319992025-03-26
n-Propylbenzene119932025-08-31
n-Propylbenzene219992025-03-26
Isopropylbenzene119932025-08-31
Isopropylbenzene219992025-03-26
o-Ethyltoluene119962025-08-31
o-Ethyltoluene219992025-03-26
m-Ethyltoluene119962025-08-31
m-Ethyltoluene219992025-03-26
p-Ethyltoluene119962025-08-31
p-Ethyltoluene219932025-03-26
p-Ethyltoluene319992025-03-26
m-Diethylbenzene119962025-08-31
m-Diethylbenzene219992025-03-26
p-Diethylbenzene119962025-08-31
p-Diethylbenzene219992025-03-26
Styrene119932025-08-31
Styrene219932025-03-26
Styrene319992025-03-26
1,2,3-Trimethylbenzene119962025-08-31
1,2,3-Trimethylbenzene219992025-03-26
Benzaldehyde120152018-09-23
Benzaldehyde620182025-04-19
Benzaldehyde820192025-06-30
2,5-Dimethylbenzaldehyde620182019-03-22
Tolualdehydes620182019-03-22
Chlorobenzene119932025-03-26
1,2-Dichlorobenzene119932010-12-28
1,3-Dichlorobenzene119942010-12-28
1,4-Dichlorobenzene119932025-03-26
Benzyl chloride119932010-12-28
1,2,4-Trichlorobenzene119932010-12-28
1,4-Dioxane1
Furan, tetrahydro-120062025-03-26
Wind Speed - Scalar119721973-12-31
Wind Speed - Scalar219802005-12-31
Wind Direction - Scalar119721973-12-31
Wind Direction - Scalar219802005-12-31
Wind Speed - Resultant220062025-09-30
Wind Direction - Resultant220062025-09-30
Std Dev Hz Wind Direction119831984-03-31
Outdoor Temperature119922025-09-30
Relative Humidity 119922025-09-30
Light Absorption Coeffiecient520202025-05-31
Solar radiation119922025-09-30
Ultraviolet radiation119982025-09-30
Barometric pressure119982025-09-30
Rain/melt precipitation119982025-09-30
Sample Flow Rate- CV119992006-09-30
Sample Flow Rate- CV5
Sample Volume119992006-09-30
Sample Volume5
Ambient Min Temperature119992006-09-30
Ambient Min Temperature520002015-11-17
Ambient Min Temperature620022002-03-03
Ambient Max Temperature119992006-09-30
Ambient Max Temperature520002015-11-17
Ambient Max Temperature620022002-03-03
Average Ambient Temperature119992015-08-30
Average Ambient Temperature520002025-05-31
Average Ambient Temperature620022002-03-03
Sample Min Baro Pressure119992006-09-30
Sample Min Baro Pressure520002015-11-17
Sample Min Baro Pressure620022002-03-03
Sample Max Baro Pressure119992006-09-30
Sample Max Baro Pressure520002015-11-17
Sample Max Baro Pressure620022002-03-03
Average Ambient Pressure119992015-08-30
Average Ambient Pressure520002025-05-31
Average Ambient Pressure620022002-03-03
Elapsed Sample Time119992006-09-30
Sample Flow Rate CV - Teflon Filter520162025-05-31
Sample Flow Rate CV - Nylon Filter520162025-05-31
Sample Flow Rate CV - Quartz Filter520162025-05-31
Sample Volume - Teflon Filter520162025-05-31
Sample Volume - Nylon Filter520162025-05-31
Sample Volume - Quartz Filter520162025-05-31
Average Ambient Temperature for URG3000N520162025-05-31
Average Ambient Pressure for URG3000N520162025-05-31
PM10 Total 0-10um STP119932003-07-02
PM10 Total 0-10um STP220032005-12-31
PM10 Total 0-10um STP420252025-09-30
PM10 - LC119982000-09-27
PM10 - LC220062011-04-30
PM2.5 - Local Conditions119992025-06-30
PM2.5 - Local Conditions420252025-09-30
Antimony PM2.5 LC520002025-05-31
Antimony PM2.5 LC620022002-03-03
Arsenic PM2.5 LC520002025-05-31
Arsenic PM2.5 LC620022002-03-03
Aluminum PM2.5 LC520002025-05-31
Aluminum PM2.5 LC620022002-03-03
Barium PM2.5 LC520002025-05-31
Barium PM2.5 LC620022002-03-03
Bromine PM2.5 LC520002025-05-31
Bromine PM2.5 LC620022002-03-03
Cadmium PM2.5 LC520002025-05-31
Cadmium PM2.5 LC620022002-03-03
Calcium PM2.5 LC520002025-05-31
Calcium PM2.5 LC620022002-03-03
Chromium PM2.5 LC520002025-05-31
Chromium PM2.5 LC620022002-03-03
Cobalt PM2.5 LC520002025-05-31
Cobalt PM2.5 LC620022002-03-03
Copper PM2.5 LC520002025-05-31
Copper PM2.5 LC620022002-03-03
Chlorine PM2.5 LC520002025-05-31
Chlorine PM2.5 LC620022002-03-03
Cerium PM2.5 LC520002025-05-31
Cerium PM2.5 LC620022002-03-03
Cesium PM2.5 LC520002025-05-31
Cesium PM2.5 LC620022002-03-03
Europium PM2.5 LC520002009-02-18
Europium PM2.5 LC620022002-03-03
Gallium PM2.5 LC520002009-02-18
Gallium PM2.5 LC620022002-03-03
Iron PM2.5 LC520002025-05-31
Iron PM2.5 LC620022002-03-03
Hafnium PM2.5 LC520002009-02-18
Hafnium PM2.5 LC620022002-03-03
Lead PM2.5 LC520002025-05-31
Lead PM2.5 LC620022002-03-03
Indium PM2.5 LC520002025-05-31
Indium PM2.5 LC620022002-03-03
Manganese PM2.5 LC520002025-05-31
Manganese PM2.5 LC620022002-03-03
Iridium PM2.5 LC520002009-02-18
Iridium PM2.5 LC620022002-03-03
Molybdenum PM2.5 LC520002009-02-18
Molybdenum PM2.5 LC620022002-03-03
Nickel PM2.5 LC520002025-05-31
Nickel PM2.5 LC620022002-03-03
Magnesium PM2.5 LC520002025-05-31
Magnesium PM2.5 LC620022002-03-03
Mercury PM2.5 LC520002009-02-18
Mercury PM2.5 LC620022002-03-03
Gold PM2.5 LC520002009-02-18
Gold PM2.5 LC620022002-03-03
Lanthanum PM2.5 LC520002009-02-18
Lanthanum PM2.5 LC620022002-03-03
Niobium PM2.5 LC520002009-02-18
Niobium PM2.5 LC620022002-03-03
Phosphorus PM2.5 LC520002025-05-31
Phosphorus PM2.5 LC620022002-03-03
Selenium PM2.5 LC520002025-05-31
Selenium PM2.5 LC620022002-03-03
Tin PM2.5 LC520002025-05-31
Tin PM2.5 LC620022002-03-03
Titanium PM2.5 LC520002025-05-31
Titanium PM2.5 LC620022002-03-03
Samarium PM2.5 LC520002009-02-18
Samarium PM2.5 LC620022002-03-03
Scandium PM2.5 LC520002009-02-18
Scandium PM2.5 LC620022002-03-03
Vanadium PM2.5 LC520002025-05-31
Vanadium PM2.5 LC620022002-03-03
Silicon PM2.5 LC520002025-05-31
Silicon PM2.5 LC620022002-03-03
Silver PM2.5 LC520002025-05-31
Silver PM2.5 LC620022002-03-03
Zinc PM2.5 LC520002025-05-31
Zinc PM2.5 LC620022002-03-03
Strontium PM2.5 LC520002025-05-31
Strontium PM2.5 LC620022002-03-03
Sulfur PM2.5 LC520002025-05-31
Sulfur PM2.5 LC620022002-03-03
Tantalum PM2.5 LC520002009-02-18
Tantalum PM2.5 LC620022002-03-03
Terbium PM2.5 LC520002009-02-18
Terbium PM2.5 LC620022002-03-03
Rubidium PM2.5 LC520002025-05-31
Rubidium PM2.5 LC620022002-03-03
Potassium PM2.5 LC520002025-05-31
Potassium PM2.5 LC620022002-03-03
Yttrium PM2.5 LC520002009-02-18
Yttrium PM2.5 LC620022002-03-03
Sodium PM2.5 LC520002025-05-31
Sodium PM2.5 LC620022002-03-03
Zirconium PM2.5 LC520002025-05-31
Zirconium PM2.5 LC620022002-03-03
Tungsten PM2.5 LC520002009-02-18
Tungsten PM2.5 LC620022002-03-03
Chloride PM2.5 LC520172025-05-31
Ammonium Ion PM2.5 LC520002025-05-31
Ammonium Ion PM2.5 LC620022002-03-03
Sodium Ion Pm2.5 LC520002025-05-31
Sodium Ion Pm2.5 LC620022002-03-03
Potassium Ion PM2.5 LC520002025-05-31
Potassium Ion PM2.5 LC620022002-03-03
OCX Carbon PM2.5 LC520002001-02-27
OC CSN Unadjusted PM2.5 LC TOT520002007-07-05
OC CSN Unadjusted PM2.5 LC TOT620022002-03-03
Total Nitrate PM2.5 LC520002025-05-31
Total Nitrate PM2.5 LC620022002-03-03
EC CSN PM2.5 LC TOT520002007-07-05
EC CSN PM2.5 LC TOT620022002-03-03
Carbonate Carbon CSN PM2.5 LC TOT520002003-07-11
Carbonate Carbon CSN PM2.5 LC TOT620022002-03-03
OCX2 Carbon PM2.5 LC520012003-07-11
OCX2 Carbon PM2.5 LC620022002-03-03
OC PM2.5 LC TOR520152025-05-31
EC PM2.5 LC TOR520152025-05-31
OC1 PM2.5 LC520152025-05-31
OC2 PM2.5 LC520152025-05-31
OC3 PM2.5 LC520152025-05-31
OC4 PM2.5 LC520152025-05-31
OP PM2.5 LC TOR520152025-05-31
EC1 PM2.5 LC520152025-05-31
EC2 PM2.5 LC520152025-05-31
EC3 PM2.5 LC520152025-05-31
OC1 CSN Unadjusted PM2.5 LC TOT520032007-07-05
OC1 CSN Unadjusted PM2.5 LC TOT6
OC2 CSN Unadjusted PM2.5 LC TOT520032007-07-05
OC2 CSN Unadjusted PM2.5 LC TOT6
OC3 CSN Unadjusted PM2.5 LC TOT520032007-07-05
OC3 CSN Unadjusted PM2.5 LC TOT6
OC4 CSN Unadjusted PM2.5 LC TOT520032007-07-05
OC4 CSN Unadjusted PM2.5 LC TOT6
OP CSN PM2.5 LC TOT520032007-07-05
OP CSN PM2.5 LC TOT6
Soil PM2.5 LC520182025-05-31
OC CSN_Rev Unadjusted PM2.5 LC TOT520072025-05-31
EC CSN_Rev Unadjusted PM2.5 LC TOT520072025-05-31
OC CSN_Rev Unadjusted PM2.5 LC TOR520072025-05-31
OC1 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
OC2 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
OC3 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
OC4 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
OP CSN_Rev Unadjusted PM2.5 LC TOR520072025-05-31
OP PM2.5 LC TOT520152025-05-31
EC CSN_Rev Unadjusted PM2.5 LC TOR520072025-05-31
EC PM2.5 LC TOT520152025-05-31
OC PM2.5 LC TOT520152025-05-31
EC1 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
EC2 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
EC3 CSN_Rev Unadjusted PM2.5 LC520072025-05-31
OP CSN_Rev Unadjusted PM2.5 LC TOT520072025-05-31
Reconstructed Mass PM2.5 LC520182025-05-31
Sulfate PM2.5 LC520002025-05-31
Sulfate PM2.5 LC620022002-03-03
Acceptable PM2.5 AQI & Speciation Mass520002014-09-29
Acceptable PM2.5 AQI & Speciation Mass620022002-03-03