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Air Monitoring Comparison Values

(In AutoGC elution order)

Air Monitoring Comparison Values (AMCVs) are used to evaluate the potential for effects to occur as a result of exposure to concentrations of constituents in the air. AMCVs are based on data concerning health effects, odor, and vegetation effects. They are not ambient air standards. If predicted or measured airborne levels of a constituent do not exceed the comparison level, adverse health or welfare effects would not be expected to result. If ambient levels of constituents in air exceed the comparison levels, it does not necessarily indicate a problem, but rather, triggers a more in-depth review. If you have any questions about the potential for health, odor, or vegetation effects from exposure to reported concentrations of any of these compounds, please contact the Toxicology Division by telephone at (512) 239-3900 or by email at tox@tceq.texas.gov.

Elution
Order
ParamNameCAS NumberTargetCarbon
Num
Minimum
Detection
Limit
Air Monitoring Comparison Values
ppb-Cppb-V
ppb-Cppb-VOdorShort-TermLong-TermOdorShort-TermLong-Term
VegetationHealthVegetationHealthVegetationHealthVegetationHealth
143202Ethane74-84-0Y20.40.2          
243203Ethylene74-85-1Y20.40.2 240010000006010600 1200500000305300
343204Propane74-98-6Y30.40.1          
443205Propylene115-07-1Y30.40.1          
543214Isobutane75-28-5Y40.40.1  132000 9600  33000 2400
643212n-Butane106-97-8Y40.40.1  368000 9600  92000 2400
743206Acetylene74-86-2Y20.40.2  50000 5000  25000 2500
843216t-2-Butene624-64-6Y40.40.1  60000 2760  15000 690
9432801-Butene106-98-9Y40.40.1  108000 9200  27000 2300
1043270Isobutene115-11-7 40.40.1  1080000 188000  270000 47000
1143217c-2-Butene590-18-1Y40.40.1  60000 2760  15000 690
1243242Cyclopentane287-92-3Y50.40.08  6000 600  1200 120
1343221Isopentane78-78-4Y50.40.08  340000 40000  68000 8000
1443220n-Pentane109-66-0Y50.40.08  340000 40000  68000 8000
15432181,3-Butadiene106-99-0Y40.40.1920 6800 36.4230 1700 9.1
16433423-Methyl-1-Butene+Cyclopentene  50.40.08  14500 1450  2900 290
1743226t-2-Pentene646-04-8Y50.40.08  22500 1050  4500 210
18432282-Methyl-2-Butene513-35-9 50.40.08  22500 1050  4500 210
19432241-Pentene109-67-1Y50.40.08500 22500 1050100 4500 210
2043227c-2-Pentene627-20-3Y50.40.08  22500 1050  4500 210
21432442,2-Dimethylbutane75-83-2Y60.40.07  6000 600  1000 100
22432842,3-Dimethylbutane79-29-8 60.40.07  5940 594  990 99
23432852-Methylpentane107-83-5 60.40.07  5100 510  850 85
24432303-Methylpentane96-14-0 60.40.07  6000 600  1000 100
2543243Isoprene78-79-5Y50.40.08240 100 1048 20 2
26432344-Methyl-1-Pentene691-37-2 60.40.07  3000 300  500 50
27432462-Methyl-1-Pentene763-29-1 60.40.07  3000 300  500 50
28432451-Hexene592-41-6 60.40.07  3000 300  500 50
2943231n-Hexane110-54-3Y60.40.07  10800 1140  1800 190
3043289t-2-Hexene4050-45-7 60.40.07  3000 300  500 50
3143290c-2-Hexene7688-21-3 60.40.07  3000 300  500 50
3243262Methylcyclopentane96-37-7Y60.40.07  4500 450  750 75
33432472,4-Dimethylpentane108-08-7Y70.40.06  5950 595  850 85
3445201Benzene71-43-2Y60.40.07  1080 8.4  180 1.4
3543248Cyclohexane110-82-7Y60.40.07  6000 600  1000 100
36432632-Methylhexane591-76-4Y70.40.06  5250 525  750 75
37432912,3-Dimethylpentane565-59-3Y70.40.06  5950 595  850 85
38432493-Methylhexane589-34-4Y70.40.06  5250 525  750 75
39432502,2,4-Trimethylpentane540-84-1Y80.40.05  6000 600  750 75
4043232n-Heptane142-82-5Y70.40.06  5950 595  850 85
4143261Methylcyclohexane108-87-2Y70.40.06  28000 2800  4000 400
42432522,3,4-Trimethylpentane565-75-3Y80.40.05  6000 600  750 75
4345202Toluene108-88-3Y70.40.06  28000 7700  4000 1100
44439602-Methylheptane592-27-8Y80.40.05  6000 600  750 75
45432533-Methylheptane589-81-1Y80.40.05  6000 600  750 75
4643233n-Octane111-65-9Y80.40.05  6000 600  750 75
4745203Ethyl Benzene100-41-4Y80.40.05  160000 3600  20000 450
4845109p-Xylene + m-Xylene Y80.40.05  13600 1120  1700 140
4945220Styrene100-42-5Y80.40.05200 40800 88025 5100 110
5045204o-Xylene95-47-6Y80.40.05  13600 1120  1700 140
5143235n-Nonane111-84-2Y90.40.04  18000 1800  2000 200
5245210Isopropyl Benzene - Cumene98-82-8Y90.40.041170 4500 450130 500 50
5345209n-Propylbenzene103-65-1Y90.40.04  4500 450  500 50
5445212m-Ethyltoluene620-14-4 90.40.04  2250 225  250 25
5545213p-Ethyltoluene622-96-8 90.40.04  2250 225  250 25
56452071,3,5-Trimethylbenzene108-67-8Y90.40.04  27000 333  3000 37
5745211o-ethyltoluene611-14-3 90.40.04  2250 225  250 25
58452081,2,4-Trimethylbenzene95-63-6Y90.40.04  27000 333  3000 37
5943238n-Decane124-18-5Y100.40.04  17500 1750  1750 175
60452251,2,3-Trimethylbenzene526-73-8Y90.40.04  27000 333  3000 37
6145218m-Diethylbenzene141-93-5 100.40.04  4600 460  460 46
6245219p-Diethylbenzene105-05-5 100.40.04  4600 460  460 46
6343954n-Undecane1120-21-4 110.40.04  6050 605  550 55
6443256a-Pinene80-56-8 100.40.04  6300 630  630 63
6543257b-Pinene127-91-3 100.40.04  6300 630  630 63
6643283Cyclopentene142-29-0 50.40.08  14500 1450  2900 290
67432823-Methyl-1-Butene563-45-1 50.40.08500 40000 4000100 8000 800
Elution
Order
ParamNameCAS NumberTargetCarbon
Num
ppb-Cppb-VOdorVegetationHealthVegetationHealthOdorVegetationHealthVegetationHealth
Short-TermLong-TermShort-TermLong-Term
Minimum
Detection
Limit
ppb-Cppb-V
Air Monitoring Comparison Value