LIST OF TOXIC AIR CONTAMINANTS (tacs) AND OZONE DEPLETING COMPOUNDS (odcs) FOR FORM TACS and special instructions for reporting select tOXIC AIR CONTAMINANTS

Table 1 provides the complete list of toxic air contaminants and ozone depleters on Form TACS including TAC Code, TAC group name, CAS#, and the name of each specific substances classified under each TAC group. The last column “Type of TAC/ODC” identifies each of the listed components as VOC or PM.

 

Table 1 lists the family name and the individual species within the family for the following toxic air contaminants (TACs):

§         Chlorinated dioxins and dibenzofurans (TAC code #7)

§         Fluorocarbons (chlorinated and brominated) (TAC code #22)

§         PAHs (TAC code #19)

 

It is important when reporting emissions for these families of compounds that emissions are not double-counted thus adversely affecting the facility’s emissions and/or fees.  Emissions reported for the overall family and each of the species within the family are summed for the purpose of calculating total facility emissions and/or assigning fees and prioritizing facility risks.  Therefore, it is important that you either report emissions by individual species or overall emissions for the toxic family.  It is always preferable to report emissions by individual species if that information is available.  Table 2 considers each toxic family and several other toxics such as, arsenic (CAS #7440382), asbestos (CAS #1332214), hexavalent chromium (CAS #18540299), lead (CAS #7439921), and nickel (CAS #7440020), and provides recommendations for emissions reporting.  All TAC emissions must be reported on form TAC as well as on form TACS.  It is important that the directions provided in Table 2 be read carefully before calculating TAC emissions.

Table 1: Form TACS Toxic Air Contaminants and Ozone Depleters

TAC Code

Group

CAS#

Substance

Type of TAC/ODC

32

Ammonia

7664417

Ammonia

Only TAC

1

Asbestos

1332214

Asbestos

TAC and PM

2

Benzene

71432

Benzene

TAC and VOC

3

Beryllium

7440417

Beryllium

TAC and PM

4

1,3-Butadiene

106990

1,3-Butadiene

TAC and VOC

5

Cadmium

7440439

Cadmium

TAC and PM

6

Carbon tetrachloride

56235

Carbon tetrachloride

TAC and VOC

7

Chlorinated dioxins and dibenzofurans

1080

Dibenzofurans (Polychlorinated dibenzofurans) {PCDFs} [POM]

TAC and VOC

1746016

2,3,7,8-Tetrachlorodibenzo-p-dioxin {TCDD} [POM]

TAC and VOC

3268879

1,2,3,4,5,6,7,8-Octachlorodibenzo-p-dioxin [POM]

TAC and VOC

19408743

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin [POM]

TAC and VOC

35822469

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin [POM]

TAC and VOC

39001020

1,2,3,4,5,6,7,8-Octachlorodibenzofuran [POM]

TAC and VOC

39227286

1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin [POM]

TAC and VOC

40321764

1,2,3,7,8-Pentachlorodibenzo-p-dioxin [POM]

TAC and VOC