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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          
243203Ethylene74-85-1Y20.40.25400002400100000060106002700001200500000305300
343204Propane74-98-6Y30.40.14500000    1500000    
443205Propylene115-07-1Y30.40.139000    13000    
543214Isobutane75-28-5Y40.40.1  132000 9600  33000 2400
643212n-Butane106-97-8Y40.40.14800000 368000 96001200000 92000 2400
743206Acetylene74-86-2Y20.40.2  50000 5000  25000 2500
843216t-2-Butene624-64-6Y40.40.18400 60000 27602100 15000 690
9432801-Butene106-98-9Y40.40.11440 108000 9200360 27000 2300
1043270Isobutene115-11-7 40.40.140000 1080000 18800010000 270000 47000
1143217c-2-Butene590-18-1Y40.40.18400 60000 27602100 15000 690
1243242Cyclopentane287-92-3Y50.40.08  6000 600  1200 120
1343221Isopentane78-78-4Y50.40.086500 340000 400001300 68000 8000
1443220n-Pentane109-66-0Y50.40.087000 340000 400001400 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  13000    2600  
18432282-Methyl-2-Butene513-35-9 50.40.08  13000    2600  
19432241-Pentene109-67-1Y50.40.08500 13000  100 2600  
2043227c-2-Pentene627-20-3Y50.40.08  13000    2600  
21432442,2-Dimethylbutane75-83-2Y60.40.07  6000 600  1000 100
22432842,3-Dimethylbutane79-29-8 60.40.072520 5940 594420 990 99
23432852-Methylpentane107-83-5 60.40.0742000 5100 5107000 850 85
24432303-Methylpentane96-14-0 60.40.0753400 6000 6008900 1000 100
2543243Isoprene78-79-5Y50.40.08240 100 1048 20 2
26432344-Methyl-1-Pentene691-37-2 60.40.07840 3000 300140 500 50
27432462-Methyl-1-Pentene763-29-1 60.40.07840 3000 300140 500 50
28432451-Hexene592-41-6 60.40.07840 3000 300140 500 50
2943231n-Hexane110-54-3Y60.40.079000 10800 11401500 1800 190
3043289t-2-Hexene4050-45-7 60.40.07840 3000 300140 500 50
3143290c-2-Hexene7688-21-3 60.40.07840 3000 300140 500 50
3243262Methylcyclopentane96-37-7Y60.40.0710200 4500 4501700 750 75
33432472,4-Dimethylpentane108-08-7Y70.40.066580 5950 595940 850 85
3445201Benzene71-43-2Y60.40.0716200 1080 8.42700 180 1.4
3543248Cyclohexane110-82-7Y60.40.0715000 6000 6002500 1000 100
36432632-Methylhexane591-76-4Y70.40.062940 5250 525420 750 75
37432912,3-Dimethylpentane565-59-3Y70.40.0631500 5950 5954500 850 85
38432493-Methylhexane589-34-4Y70.40.065880 5250 525840 750 75
39432502,2,4-Trimethylpentane540-84-1Y80.40.055360 6000 600670 750 75
4043232n-Heptane142-82-5Y70.40.064690 5950 595670 850 85
4143261Methylcyclohexane108-87-2Y70.40.061050 28000 2800150 4000 400
42432522,3,4-Trimethylpentane565-75-3Y80.40.05  6000 600  750 75
4345202Toluene108-88-3Y70.40.066440 28000 7700920 4000 1100
44439602-Methylheptane592-27-8Y80.40.05880 6000 600110 750 75
45432533-Methylheptane589-81-1Y80.40.0512000 6000 6001500 750 75
4643233n-Octane111-65-9Y80.40.0513600 6000 6001700 750 75
4745203Ethyl Benzene100-41-4Y80.40.051360 160000 3600170 20000 450
4845109p-Xylene + m-Xylene Y80.40.05640 13600 112080 1700 140
4945220Styrene100-42-5Y80.40.05200 40800 88025 5100 110
5045204o-Xylene95-47-6Y80.40.053040 13600 1120380 1700 140
5143235n-Nonane111-84-2Y90.40.04  18000 1800  2000 200
5245210Isopropyl Benzene - Cumene98-82-8Y90.40.04432 4500 45048 500 50
5345209n-Propylbenzene103-65-1Y90.40.04432 4500 45048 500 50
5445212m-Ethyltoluene620-14-4 90.40.04162 2250 22518 250 25
5545213p-Ethyltoluene622-96-8 90.40.0472.9 2250 2258.1 250 25
56452071,3,5-Trimethylbenzene108-67-8Y90.40.04  2250 225  250 25
5745211o-ethyltoluene611-14-3 90.40.04666 2250 22574 250 25
58452081,2,4-Trimethylbenzene95-63-6Y90.40.041260 2250 225140 250 25
5943238n-Decane124-18-5Y100.40.046200 17500 1750620 1750 175
60452251,2,3-Trimethylbenzene526-73-8Y90.40.04  2250 225  250 25
6145218m-Diethylbenzene141-93-5 100.40.04700 4600 46070 460 46
6245219p-Diethylbenzene105-05-5 100.40.04700 4600 46070 460 46
6343954n-Undecane1120-21-4 110.40.049570 6050 605870 550 55
6443256a-Pinene80-56-8 100.40.04180 6300 63018 630 63
6543257b-Pinene127-91-3 100.40.04330 6300 63033 630 63
6643283Cyclopentene142-29-0 50.40.08  14500 1450  2900 290
67432823-Methyl-1-Butene563-45-1 50.40.081250 40000 4000250 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