SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

(Adopted June 1, 1990)(Amended December 7, 1990)
(Amended July 10, 1998)(Amended January 8, 1999)(Amended March 12, 1999)
(Amended August 13, 1999)

RULE 1401. NEW SOURCE REVIEW OF TOXIC AIR CONTAMINANTS

(a) Purpose
This rule specifies limits for maximum individual cancer risk (MICR), cancer burden, and noncancer acute and chronic hazard index (HI) from new permit units, relocations, or modifications to existing permit units which emit toxic air contaminants listed in Table I. The rule establishes allowable risks for permit units requiring new permits pursuant to Rules 201 or 203.

(b) Applicability

(1) Applications for new, relocated, and modified permit units which were received by the District on or after June 1, 1990 shall be subject to Rule 1401. Applications shall be subject to the version of Rule 1401 that is in effect at the time the application is deemed complete. Permit units installed without a required permit to construct shall be subject to this rule, if the application for a permit to operate such equipment was submitted after June 1, 1990.

(2) This rule shall apply to new, relocated, and modified equipment identified in Rule 219 as not requiring a written permit if the risk from the equipment will be greater than identified in subparagraph (d)(1)(A), or paragraphs (d)(2) or (d)(3) in Rule 1401.

(c) Definitions

(1) ACCEPTABLE stack height for a permit unit is defined as a stack height that does not exceed two and one half times the height of the permit unit or two and one half times the height of the building housing the permit unit, and shall not be greater than 65 meters (213 feet), unless the applicant demonstrates to the satisfaction of the Executive Officer that a greater height is necessary.

(2) BEST AVAILABLE CONTROL TECHNOLOGY FOR TOXICS (T-BACT) means the most stringent emissions limitation or control technique which:

(A) has been achieved in practice for such permit unit category or class of source; or

(B) is any other emissions limitation or control technique, including process and equipment changes of basic and control equipment, found by the Executive Officer to be technologically feasible for such class or category of sources, or for a specific source.

(3) CANCER BURDEN means the estimated increase in the occurrence of cancer cases in a population subject to a MICR of greater than or equal to one in one million (1.0 x 10-6) resulting from exposure to toxic air contaminants.

(4) CONTEMPORANEOUS RISK REDUCTION means any reduction in risk resulting from a decrease in emissions of toxic air contaminants at the facility that is permanent, real, quantifiable and enforceable through District permit conditions. Permit applications associated with the increase and decrease in risk must be submitted together and the reduction of risk must occur before the start of operation of the permit unit that will have an increased risk. A contemporaneous risk reduction shall be calculated based on the actual average annual emissions, as determined by facility records, and annual emissions declarations pursuant to Rule 301 as appropriate, or other data approved by the Executive Officer, whichever is less, which have occurred during the two-year period immediately preceding the date of application

(5) FACILITY means any permit unit or grouping of permit units or other air contaminant-emitting activities which are located on one or more contiguous properties within the District, in actual physical contact or separated solely by a public roadway or other public right-of-way, and are owned or operated by the same person (or by persons under common control), or an outer continental shelf (OCS) source as determined in 40 CFR Section 55.2. Such above-described groupings, if noncontiguous, but connected only by land carrying a pipeline, shall not be considered one facility. Notwithstanding the above, sources or installations involved in crude oil and gas production in Southern California Coastal or OCS Waters and transport of such crude oil and gas in Southern California Coastal or OCS Waters shall be included in the same facility which is under the same ownership or use entitlement as the crude oil and gas production facility on-shore.

(6) INDIVIDUAL SUBSTANCE ACUTE HAZARD INDEX (HI) is the ratio of the estimated maximum one-hour concentration of a toxic air contaminant for a potential maximally exposed individual to its acute reference exposure level.

(7) INDIVIDUAL SUBSTANCE CHRONIC HAZARD INDEX (HI) is the ratio of the estimated long-term level of exposure to a toxic air contaminant for a potential maximally exposed individual to its chronic reference exposure level. The chronic hazard index calculations shall include multipathway consideration, if applicable.

(8) MAXIMUM INDIVIDUAL CANCER RISK (MICR) is the estimated probability of a potential maximally exposed individual contracting cancer as a result of exposure to toxic air contaminants over a period of 70 years for residential and 46 years for worker receptor locations. The MICR calculations shall include multipathway consideration, if applicable.

(9) MODIFICATION means any physical change in, change in method of operation, or addition to an existing permit unit that requires an application for a permit to construct and/or operate. Routine maintenance and/or repair shall not be considered a physical change. A change in the method of operation of equipment, unless previously limited by an enforceable permit condition, shall not include:

(A) an increase in the production rate, unless such increase will cause the maximum design capacity of the equipment to be exceeded; or

(B) an increase in the hours of operation; or

(C) a change in ownership of a source; or

(D) a change in formulation of the materials processed which will not result in a net increase of the MICR, cancer burden, or chronic or acute HI from the associated permit unit.

For facilities that have been issued a facility permit pursuant to Regulation XX or a Title V permit pursuant to Regulation XXX, modification means any physical change in, change in method of operation of, or addition to an existing individual article, machine, equipment or other contrivance which would have required an application for a permit to construct and/or operate, were the unit not covered under a facility permit or Title V permit.

(10) PERMIT UNIT means any article, machine, equipment, or other contrivance, or combination thereof, which may cause or control the issuance of air contaminants, and which requires a written permit pursuant to Rules 201 and/or 203. For facilities that have been issued a facility permit or Title V permit, a permit unit for the purpose of this rule means any individual article, machine, equipment or other contrivance which may cause or control the issuance of air contaminants and which would require a written permit pursuant to Rules 201 and/or 203 if it was not covered under a facility permit or Title V permit. For publicly-owned sewage treatment operations, each process within multi-process permit units at the facility shall be considered a separate permit unit for purposes of this rule.

(11) RECEPTOR LOCATION means

(A) for the purpose of calculating acute HI, any location outside the boundaries of the facility at which a person could experience acute exposure; and

(B) for the purpose of calculating chronic HI and MICR, any location outside the boundaries of the facility at which a person could experience chronic exposure.

The Executive Officer shall consider the potential for exposure in determining whether the location will be considered a receptor location.

(12) RELOCATION means the removal of an existing permit unit from one parcel of land in the District and installation at another parcel of land where two parcels are not in actual physical contact and are not separated solely by a public roadway or other public right-of-way. The removal of a permit unit from one location within a facility and installation at another location within the facility is a relocation only if an increase in maximum individual cancer risk in excess of one in one million (1 x 10-6) or a Hazard Index of 1.0 occurs at any receptor location.

(13) TOTAL ACUTE HAZARD INDEX (HI) is the sum of the individual substance acute HIs for all toxic air contaminants affecting the same target organ system.

(14) TOTAL CHRONIC HAZARD INDEX (HI) is the sum of the individual substance chronic HIs for all toxic air contaminants affecting the same target organ system.

(15) TOXIC AIR CONTAMINANT is an air pollutant which may cause or contribute to an increase in mortality or serious illness, or which may pose a present or potential hazard to human health. For the purpose of this rule, toxic air contaminants are those listed in Table I.

(d) Requirements
The requirements of paragraphs (d)(2) and (d)(3) shall become effective September 8, 1998. The Executive Officer shall deny the permit to construct a new, relocated or modified permit unit if emissions of any toxic air contaminant listed in Table I may occur, unless the applicant has substantiated to the satisfaction of the Executive Officer all of the following:

(1) MICR and Cancer Burden

The cumulative increase in MICR which is the sum of the calculated MICR values for all toxic air contaminants emitted from the new, relocated or modified permit unit and all other permit units located within a radius of 100 meters owned or operated by the applicant for which applications were submitted on or after June 1, 1990 will not result in any of the following:

(A) an increased MICR greater than one in one million (1.0x10-6) at any receptor location, if the permit unit is constructed without T-BACT;

(B) an increased MICR greater than ten in one million (1.0x10-5) at any receptor location, if the permit unit is constructed with T-BACT;

(C) a cancer burden greater than 0.5.

(2) Chronic Hazard Index
The cumulative increase in total chronic HI, for all target organ systems, due to total emissions from the new, relocated or modified permit unit and all other permit units located within a radius of 100 meters owned or operated by the applicant for which applications were deemed complete on or after the date when the risk value for the compound is finalized by OEHHA, unless paragraph (e)(3) applies, will not exceed 1.0 at any receptor location.

(3) Acute Hazard Index
The cumulative increase in total acute HI, for all target organ systems, due to total emissions from the new, relocated or modified permit unit and all other permit units located within a radius of 100 meters owned or operated by the applicant for which applications were deemed complete on or after the date when the risk value for the compound is finalized by OEHHA, unless paragraph (e)(3) applies, will not exceed 1.0 at any receptor location.

(4) Risk Per Year
The risk per year shall not exceed 1/70 of the maximum allowable risk specified in (d)(1)(A) or (d)(1)(B) at any receptor locations in residential areas.

(5) If a permit contains operating conditions imposed pursuant to Rule 1401, which prohibit or limit the use or emission of toxic air contaminants, those conditions shall apply only to those toxic air contaminants listed in the version of Rule 1401 applicable at the time the permit conditions were imposed.

(6) Federal New Source Review for Toxics
Pursuant to Section 112(g) of the federal Clean Air Act (CAA), no person shall begin construction or reconstruction of a major stationary source emitting hazardous air pollutants listed in Section 112 (b) of the CAA, unless the source is constructed with Best Available Control Technology for Toxics (T-BACT) and complies with all other applicable requirements, including definitions and public noticing, referenced in 40 CFR 63.40 through 63.44. The requirements of this paragraph shall not apply to:

(A) any source that is subject to an existing National Emission Standard for Hazardous Air Pollutants (NESHAP) pursuant to sections 112(d), 112(h), or 112(j) of the federal CAA;

(B) any source that is exempted from regulations under a NESHAP issued pursuant to sections 112(d), 112(h), or 112(j) of the federal CAA;

(C) any source that has received all necessary air quality permits for such construction or reconstruction before June 29, 1998;

(D) electric utility steam generating units, unless and until such time as these units are added to the source category list pursuant to the requirements of section 112(c)(5) of the federal CAA;

(E) any sources that are within a source category that has been deleted from the source category list pursuant to section 112(c)(9) of the federal CAA; or

(F) research and development activities.
Compliance with this paragraph does not relieve any owner or operator of a major stationary source from complying with all other applicable District rules and regulations, including this rule, any applicable state airborne toxic control measure, or other applicable state and federal laws. Exemptions under subdivision (g) of this rule do not apply to this paragraph. This paragraph shall take effect retroactively from June 29, 1998.

(e) Risk Assessment Procedures

(1) The Executive Officer shall periodically publish procedures for determining health risks under this rule. To the extent possible, the procedures will be consistent with the policies and procedures of the state Office of Environmental Health Hazard Assessment (OEHHA).

(2) Within 150 days of risk values for compounds not in Table I being finalized by OEHHA, staff will bring proposed amendments to this rule to reflect changes to Table I.

(3) Within 150 days of risk values for compounds in Table I being updated by OEHHA, staff will:

(A) publish a Notice of Intent to change risk values;

(B) perform an impact assessment, including socioeconomic effects; and

(C) submit a report to the District Governing Board with recommendations for changing the risk values in the procedures for determining risk assessment published pursuant to paragraph (e)(1).

(4) To calculate the cumulative increase in MICR pursuant to paragraph (d)(1), the increase from each permit unit shall be based on the emissions of toxic air contaminants, the risk values, and risk assessment procedures applicable at the time when each complete application was deemed complete by the District.

(f) Emissions Calculations

(1) For the purpose of determining MICR and cancer burden due to a new or relocated permit unit pursuant to this rule, the total Toxic Air Contaminant emissions from the new or relocated permit unit shall be calculated on an annual basis from permit conditions which directly limit the emissions or, when no such conditions are imposed, from:

(A) the maximum rated capacity;

(B) the maximum possible annual hours of operation;

(C) the maximum annual emissions; and

(D) the physical characteristics of the materials processed.

(2) For the purpose of determining chronic HI due to a new or relocated permit unit pursuant to this rule, the total emissions from a permit unit shall be calculated on an annual average basis from permit conditions which directly limit the emissions or, when no such conditions are imposed, from:

(A) the maximum rated capacity;

(B) the annual average hours of operation;

(C) the annual average emissions; and

(D) the physical characteristics of the materials processed.

(3) For the purpose of determining MICR, cancer burden and chronic HI due to a modified permit unit pursuant to this rule, the increase in emissions from the modified permit unit shall be calculated based on the difference between the total permitted emissions after the modification, calculated pursuant to the criteria established in subparagraphs (f)(1)(A), (B), (C), and (D), and:

(A) the total permitted emissions prior to the modification as stated in the permit conditions; or

(B) if there are no existing permit conditions that limit emissions, the average annual emissions which have occurred during the two-year period immediately preceding the date of the complete permit application for modification or other appropriate period determined by the Executive Officer to be representative of a permit unit's operation.

(4) For the purpose of determining acute HI due to a new, relocated or modified permit unit pursuant to this rule, the total emissions from a permit unit shall be calculated on a maximum hourly basis from permit conditions which directly limit the emissions or, when no such conditions exist, from:

(A) the maximum rated capacity;

(B) the maximum hourly emissions; and

(C) the physical characteristics of the materials processed.

(5) De Minimus Values

Any permit unit with values at or below the screening levels as specified in the procedures for determining health risks under this rule, published pursuant to paragraph (e)(1), shall be deemed in compliance with the requirements of subdivision (d).

(g) Exemptions

(1) The requirements of subdivision (d) shall not apply to:

(A) Permit Renewal or Change of Ownership
Any permit unit which is in continuous operation, without modification or change in operating conditions, for which a new permit to operate is required solely because of permit renewal or change of ownership.

(B) Modification with No Increase in Risk
A modification of a permit unit that causes a reduction or no increase in the cancer burden, MICR or acute or chronic HI at any receptor location.

(C) Functionally Identical Replacement
A permit unit replacing a functionally identical permit unit, provided there is no increase in maximum rating or increase in emissions of any toxic air contaminants. For replacement of dry cleaning permit units only, provided there is no increase in any toxic air contaminants.

(D) Equipment Previously Exempt Under Rule 219
Equipment which previously did not require a written permit pursuant to Rule 219 that is no longer exempt, provided that the equipment was installed prior to the Rule 219 amendment eliminating the exemption and a complete application for the permit is received within one (1) year after the Rule 219 amendment removing the exemption.

(E) Modifications to Terminate Research Projects
Modifications restoring the previous permit conditions of a permit unit, provided that: the applicant demonstrates that the previous permit conditions were modified solely for the purpose of installing innovative control equipment as part of a demonstration or investigation designed to advance the state of the art with regard to controlling emissions of toxic air contaminants; the emission reductions achieved by the demonstration project are not used for permitting any equipment with emission increases under the contemporaneous emission reduction exemption as specified in paragraph (g)(2); the demonstration project is completed within two (2) years; and a complete application is submitted no later than two (2) years after the date of issuance of the permit which modified the conditions of the previous permit for the purpose of the demonstration or investigation.

(F) Emergency Internal Combustion Engines
Emergency internal combustion engines that are exempted under Rule 1304.

(G) Wood Product Stripping
Wood product stripping permit units, provided that the risk increases due to emissions from the permit unit and all other permit units located within 100 meters owned or operated by the applicant for which complete applications were submitted on or after July 10, 1998 will not exceed a MICR of 100 in one million (1.0 x 10-4) or a total acute or chronic hazard index of five (5) at any receptor location. This exemption shall not apply to permit applications received after January 10, 2000, or sooner if the Executive Officer makes a determination that T-BACT is available to enable compliance with the requirements of paragraphs (d)(1), (d)(2) and (d)(3).

(2) Contemporaneous Risk Reduction

(A) The requirements of paragraphs (d)(1) and (d)(4) shall not apply if the applicant demonstrates that a contemporaneous risk reduction resulting in a decrease in emissions will occur such that both of the following conditions are met:

(i) no receptor location will experience a total increase in MICR of greater than one in one million (1.0 x 10-6) due to the cumulative impact of both the permit unit and the contemporaneous risk reduction; and

(ii) the contemporaneous risk reduction occurs within 100 meters of the permit unit.

T-BACT shall be used on permit units exempted under this subparagraph if the MICR from the permit unit exceeds one in one million (1.0 x 10-6).

(B) The requirements of paragraphs (d)(2) and (d)(3) shall not apply if the applicant substantiates to the satisfaction of the Executive Officer that a contemporaneous risk reduction will occur such that any increase in individual substance acute or chronic HI from the permit unit exceeding 1.0 is mitigated with an equal or greater decrease in the same individual substance acute or chronic HI, respectively, from the contemporaneous risk reduction such that both of the following conditions are met:

(i) no receptor location will experience an increase in total acute or chronic HI of more than 1.0 due to the cumulative impact of both the permit unit and the contemporaneous risk reduction; and

(ii) the contemporaneous risk reduction occurs within 100 meters of the permit unit.

(3) Alternate Hazard Index Levels

The requirements of paragraphs (d)(2) and (d)(3) shall not apply if the applicant substantiates to the satisfaction of the Executive Officer that at all receptor locations and for every target organ system, the total chronic and acute HI level resulting from emissions from the new, modified or relocated permit unit and all other permit units located within 100 meters owned or operated by the applicant for which applications were submitted on or after July 10, 1998 shall not exceed alternate HI levels which are determined by the Executive Office in consultation with the Office of Environmental Health Hazard Assessment to be protective against adverse health effects. No alternate HI level shall exceed 10.

TABLE I

TOXIC AIR CONTAMINANTS

CAS # SUBSTANCE EFFECTIVE
DATE

CANCER
EFFECTIVE
DATE

CHRONIC
EFFECTIVE DATE

ACUTE
75-07-0 acetaldehyde December 7, 1990 September 8, 1998  
60-35-5 acetamide January 8, 1999    
107-02-8 acrolein   * August 13, 1999
79-06-1 acrylamide (or propenamide) December 7, 1990 **  
79-10-7 acrylic acid   * August 13, 1999
107-13-1 acrylonitrile (or vinyl cyanide) December 7, 1990 **  
107-05-1 allyl chloride January 8, 1999    
117-79-3 aminoanthraquinone, 2- January 8, 1999    
7664-41-7 ammonia   * August 13, 1999
62-53-3 aniline January 8, 1999    
7440-38-2

 

 

7784-42-1
arsenic and arsenic compounds (inorganic, including arsine) including, but not limited to:

arsenic compounds (inorganic)

arsine
December 7, 1990 **

 

 

*
August 13, 1999

August 13, 1999

August 13, 1999
1332-21-4 asbestos June 1, 1990    
71-43-2 benzene (including benzene from gasoline) June 1, 1990 ** August 13, 1999
92-87-5 benzidine (and its salts) December 7, 1990 **  
100-44-7 benzyl chloride September 8, 1998 ** August 13, 1999
7440-41-7 beryllium and beryllium compounds December 7, 1990 **  
111-44-4 bis(2-chloroethyl)ether (DCEE) December 7, 1990    
117-81-7 bis(2-ethylhexyl)phthalate (DEHP) September 8, 1998 **  
542-88-1 bis(chloromethyl)ether December 7, 1990    
7789-30-2 bromine pentafluoride   *  
106-99-0 butadiene, 1,3- December 7, 1990 **  
7440-43-9 cadmium and cadmium compounds June 1, 1990 **  
75-15-0 carbon disulfide   * August 13, 1999
56-23-5 carbon tetrachloride (or tetrachloromethane) June 1, 1990 ** August 13, 1999
7782-50-5 chlorine   * August 13, 1999
95-83-0 chloro-o-phenylenediamine, 4- January 8, 1999    
95-69-2 chloro-o-toluidine, p- January 8, 1999    
108-90-7 chlorobenzene   *  
75-43-4

75-69-4

76-13-1

chlorofluorocarbons

dichlorodifluoromethane (CFC-12)

trichlorofluoromethane (CFC-11)

trichlorotrifluoroethane (CFC-113)

 

 

 
 

 

*

*

*
 
67-66-3 chloroform (trichloromethane) December 7, 1990 ** August 13, 1999
95-57-8

88-06-2

87-86-5

Chlorophenols

chlorophenol, 2-

trichlorophenol, 2,4,6-

tetrachlorophenols (TECPH)

pentachlorophenol

 

December 7, 1990

September 8, 1998
*

*

**
 
76-06-2 chloropicrin   * August 13, 1999
126-99-8 chloroprene September 8, 1998 **  
18540-29-9

7758-97-6
Chromium (hexavalent) and chromium compounds

including, but not limited to:

lead chromate
June 1, 1990

 

September 8, 1998
**

**
 
7440-50-8 copper and copper compounds   * August 13, 1999
120-71-8 cresidine, p- January 8, 1999    
1319-77-3

08-39-4

95-48-7

106-44-5

cresols/cresylic acid (all isomers and mixture)

cresol, m-

cresol, o-

cresol, p-

 

 

 
*

*

*

*
 
135-20-6 cupferron January 8, 1999    
924-16-3

621-64-7

55-18-5

62-75-9

10595-95-6

dialkylnitrosamines

nitrosodi-n-butylamine, n-

nitrosodi-n-propylamine, n-

nitrosodiethylamine, n-

nitrosodimethylamine, n-

nitrosomethylethylamine, n-

December 7, 1990

September 8, 1998

December 7, 1990

December 7, 1990

September 8, 1998
   
615-05-4 diaminoanisole, 2,4- (sulfate) January 8, 1999    
95-80-7 diaminotoluene, 2,4- January 8, 1999    

1746-01-6

40321-76-4

39227-28-6

57653-85-7

19408-74-3

35822-46-9

3268-87-9

41903-57-5

36088-22-9

34465-46-8

37871-00-4

 

dibenzo-p-dioxins (chlorinated)

tetrachlorodibenzo-p-dioxin, 2,3,7,8-

pentachlorodibenzo-p-dioxin, 1,2,3,7,8-

hexachlorodibenzo-p-dioxin, 1,2,3,4,7,8-

hexachlorodibenzo-p-dioxin, 1,2,3,6,7,8-

hexachlorodibenzo-p-dioxin, 1,2,3,7,8,9-

heptachlorodibenzo-p-dioxin, 1,2,3,4,6,7,8-

octachlorodibenzo-p-dioxin, 1,2,3,4,5,6,7,8-

total tetrachlorodibenzo-p-dioxin

total pentachlorodibenzo-p-dioxin

total hexachlorodibenzo-p-dioxin

total heptachlorodibenzo-p-dioxin

total dioxins, with individual isomers reported

total dioxins, without individual isomers reported

 

June 1, 1990

 

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

 

**

 

**

**

**

**

**

**

**

**

**

**

**

**

**

 

51207-31-9

57117-41-6

57117-31-4

70648-26-9

57117-44-9

72918-21-9

60851-34-5

67562-39-4

55673-89-7

39001-02-0

55722-27-5

30402-15-4

55684-94-1

38998-75-3

dibenzofurans (chlorinated)

tetrachlorodibenzofuran, 2,3,7,8-

pentachlorodibenzofuran, 1,2,3,7,8-

pentachlorodibenzofuran, 2,3,4,7,8-

hexachlorodibenzofuran, 1,2,3,4,7,8-

hexachlorodibenzofuran, 1,2,3,6,7,8-

hexachlorodibenzofuran, 1,2,3,7,8,9-

hexachlorodibenzofuran, 2,3,4,6,7,8-

heptachlorodibenzofuran, 1,2,3,4,6,7,8-

heptachlorodibenzofuran, 1,2,3,4,7,8,9-

octachlorodibenzofuran, 1,2,3,4,5,6,7,8

total tetrachlorodibenzofuran

total pentachlorodibenzofuran

total hexachlorodibenzofuran

total heptachlorodibenzofuran

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

June 1, 1990

**

**

**

**

**

**

**

**

**

**

**

**

**

**

**

 
96-12-8 dibromo-3-chloropropane, 1,2- (DBCP) September 8, 1998 **  
106-46-7 dichlorobenzene, 1,4- (or p-dichlorobenzene) September 8, 1998 **  
91-94-1 dichlorobenzidine, 3,3 December 7, 1990    
75-34-3 dichloroethane, 1,1- January 8, 1999    
60-11-7 dimethylaminoazobenzene, p- January 8, 1999    
121-14-2 dinitrotoluene, 2,4- December 7, 1990    
123-91-1 dioxane, 1,4- (or 1,4-diethylene dioxide) December 7, 1990 ** August 13, 1999
106-89-8 epichlorohydrin (or 1-chloro-2,3-epoxypropane) December 7, 1990 ** August 13, 1999
140-88-5 ethyl acrylate   *  
75-00-3 ethyl chloride (or chloroethane)   *  
106-93-4 ethylene dibromide (or 1,2-dibromoethane) June 1, 1990 **  
107-06-2 ethylene dichloride (or 1,2-dichloroethane) June 1, 1990 **  
75-21-8 ethylene oxide (or 1,2-epoxyethane) June 1, 1990 **  
96-45-7 ethylene thiourea January 8, 1999    
50-00-0 formaldehyde December 7, 1990 ** August 13, 1999
  gasoline vapors   *  
111-30-8 glutaraldehyde   *  
111-76-2

110-80-5

111-15-9

109-86-4

110-49-6

glycol ethers (and their acetates)

ethylene glycol butyl ether

ethylene glycol ethyl ether

ethylene glycol ethyl ether acetate

ethylene glycol methyl ether

ethylene glycol methyl ether acetate

 

 

 

 

 
 

*

*

*

*

*
August 13, 1999

February 10, 1999

August 13, 1999

August 13, 1999
118-74-1 hexachlorobenzene December 7, 1990 **  
608-73-1

58-89-9
hexachlorocyclohexanes (mixed or technical grade)

hexachlorocyclohexane, gamma- (lindane)
December 7, 1990

September 8, 1998
**

**
 
77-47-4 hexachlorocyclopentadiene   *  
302-01-2 hydrazine September 8, 1998 **  
122-66-7 hydrazobenzene (or 1,2-diphenylhydrazine) December 7, 1990    
7647-01-0 hydrochloric acid (or hydrogen chloride)   * August 13, 1999
7664-39-3 hydrofluoric acid (or hydrogen fluoride)   * August 13, 1999
10035-10-6 hydrogen bromide (HBR)   *  
74-90-8 hydrogen cyanide   * August 13, 1999
7783-06-4 hydrogen sulfide   * February 10, 1999
7783-07-5 hydrogen selenide     August 13, 1999
624-83-9 isocyanates

methyl isocyanate
   

*
 
67-63-0 isopropyl alcohol   * August 13, 1999

7439-92-1

 

 

301-04-2

7758-97-6

7446-27-7

1335-32-6

lead and lead compounds (inorganic, including elemental lead) including, but not limited to:

lead compounds (inorganic)

lead acetate

lead chromate

lead phosphate

lead subacetate

September 8, 1998

 

September 8, 1998

September 8, 1998

September 8, 1998

September 8, 1998

September 8, 1998

**

 

**

**

**

**

**

 
  lead compounds (other than inorganic) September 8, 1998 **  
108-31-6 maleic anhydride   *  
7439-96-5 manganese and manganese compounds   *  
7439-97-6

7487-94-7

593-74-8

mercury and mercury compounds (inorganic)

including, but not limited to:

mercuric chloride

methyl mercury

 

 

 
*

*

*
August 13, 1999
67-56-1 methanol (methyl alcohol)   * August 13, 1999
74-83-9 methyl bromide (or bromomethane)   * August 13, 1999
71-55-6 methyl chloroform (or 1,1,1-trichloroethane)   * August 13, 1999
78-93-3 methyl ethyl ketone   * August 13, 1999
80-62-6 methyl methacrylate   *  
101-14-4 methylene bis(2-chloroaniline), 4,4- (MOCA) January 8, 1999    
75-09-2 methylene chloride (or dichloromethane) June 1, 1990 ** August 13, 1999
101-77-9 methylene dianiline, 4,4'- (and its dichloride) September 8, 1998 **  
1135 mineral fibers (other than man-made)   *  
90-94-8 michler's ketone January 8, 1999    

7440-02-0

373-02-4

3333-67-3

13463-39-3

12054-48-7

1313-99-1

12035-72-2

1271-28-9

nickel and nickel compounds:

including, but not limited to:

nickel acetate

nickel carbonate

nickel carbonyl

nickel hydroxide

nickel oxide

nickel subsulfide

nickelocene

refinery dust from the pyrometallurgical process

March 12, 1999

March 12, 1999

March 12, 1999

March 12, 1999

March 12, 1999

March 12, 1999

December 7, 1990

March 12, 1999

December 7, 1990

**

**

**

**

**

**

**

**

**

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999

7697-37-2 nitric acid   * August 13, 1999
98-95-3 nitrobenzene   *  
79-46-9 nitropropane, 2-   *  
759-73-9 nitroso-n-ethylurea, n- December 7, 1990    
684-93-5 nitroso-n-methylurea, n- December 7, 1990    
86-30-6 nitrosodiphenylamine, n- December 7, 1990    
156-10-5 nitrosodiphenylamine, p- September 8, 1998    
59-89-2 nitrosomorpholine, n- January 8, 1999    
100-75-4 nitrosopiperidine, n- January 8, 1999    
930-55-2 nitrosopyrrolidine, n- December 7, 1990    
108171-26-2 paraffins, chlorinated (average chain length, c12; approx. 60% cl by weight) January 8, 1999    
127-18-4 perchloroethylene (or tetrachloroethylene) September 8, 1998 September 8, 1998 August 13, 1999
108-95-2 phenol   * August 13, 1999
75-44-5 phosgene   * August 13, 1999
7723-14-0

7803-51-2
phosphorus and phosphorus compounds

phosphine
  *

*
 
85-44-9 phthalic anhydride   *  
1336-36-3 polychlorinated biphenyls (PCBs) December 7, 1990 **  

56-55-3

50-32-8

205-99-2

205-82-3

207-08-9

218-01-9

226-36-8

224-42-0

53-70-3

192-65-4

189-64-0

189-55-9

191-30-0

194-59-2

57-97-6

42397-64-8

42397-65-9

193-39-5

56-49-5

3697-24-3

91-20-3

602-87-9

7496-02-8

607-57-8

5522-43-0

57835-92-4

polycyclic aromatic hydrocarbons (PAHs)

benz[a]anthracene

benzo[a]pyrene

benzo[b]fluoranthene

benzo[j]fluoranthene

benzo[k]fluoranthene

chrysene

dibenz[a,h]acridine

dibenz[a,j]acridine

dibenz[a,h]anthracene

dibenzo[a,e]pyrene

dibenzo[a,h]pyrene

dibenzo[a,i]pyrene

dibenzo[a,l]pyrene

dibenzo[c,g]carbazole, 7h-

dimethylbenz[a]anthracene, 7,12-

dinitropyrene, 1,6-

dinitropyrene, 1,8-

indeno[1,2,3-cd]pyrene

methylcholanthrene, 3-

methylchrysene, 5-

naphthalene

nitroacenaphthene, 5-

nitrochrysene, 6-

nitrofluorene, 2-

nitropyrene, 1-

nitropyrene, 4-

polycyclic aromatic hydrocarbons (PAHs), total

December 7, 1990

December 7, 1990

December 7, 1990

January 8, 1999

December 7, 1990

December 7, 1990

January 8, 1999

January 8, 1999

December 7, 1990

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

December 7, 1990

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

January 8, 1999

September 8, 1998

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*

 
7758-01-2 potassium bromate January 8, 1999    
1120-71-4 propane sultone, 1,3- January 8, 1999    
75-56-9 propylene oxide (or 1,2-epoxy propane) September 8, 1998 ** August 13, 1999
7782-49-2 selenium and selenium compounds   *  
1310-73-2 sodium hydroxide   * August 13, 1999
100-42-5 styrene (or vinyl benzene)   * August 13, 1999
7664-93-9 sulfuric acid (and oleum)   * August 13, 1999
79-34-5 tetrachloroethane, 1,1,2,2- January 8, 1999    
62-55-5 thioacetamide January 8, 1999    
108-88-3 toluene (or methyl benzene)   * August 13, 1999
584-84-9

91-08-7
toluene diisocyanates

toluene-2,4-diisocyanate

toluene-2,6-diisocyanate
September 8, 1998

September 8, 1998
**

**
 
79-00-5 trichloroethane, 1,1,2- January 8, 1999    
79-01-6 trichloroethylene December 7, 1990 **  
121-44-8 triethylamine   * August 13, 1999
51-79-6 urethane (or ethyl carbamate) September 8, 1998    
1314-62-1 vanadium pentoxide     August 13, 1999
75-01-4 vinyl chloride (or chloroethylene) December 7, 1990 ** August 13, 1999
75-35-4 vinylidene chloride   *  
1330-20-7

108-38-3

95-47-6

106-42-3

xylenes (isomers and mixture)

xylene, m-

xylene, o-

xylene, p-

 

 

 
*

*

*

*
August 13, 1999

August 13, 1999

August 13, 1999

August 13, 1999
7440-66-6

1314-13-2

zinc and zinc compounds

including, but not limited to:

zinc oxide

 

 
*

*
 
* Compounds not classified as carcinogenic, but have chronic risk values proposed by OEHHA that have not yet been finalized. The effective date is the date the Scientific Review Panel approves the chronic risk value, unless paragraph (e)(3) applies. Paragraph (e)(3) applies when the finalized chronic risk value differs from the value in the latest version of the Risk Assessment Procedures published pursuant to paragraph (e)(1).

** Compounds are classified as carcinogenic, but have chronic risk values proposed by OEHHA that have not yet been finalized. The effective date for use of chronic risk values is the date the Scientific Review Panel approves the chronic risk value, unless paragraph (e)(3) applies.

TABLE II

TOXIC AIR CONTAMINANTS WITH PROPOSED RISK VALUES

CAS # SUBSTANCE
67-64-1 acetone
79-10-7 acrylic acid
107-05-1 allyl chloride
7783-20-2 ammonium sulfate
62-53-3 aniline
1309-64-4 antimony trioxide
  arsenic compounds (other than inorganic)
75-15-0 carbon disulfide
10049-04-4 chlorine dioxide
532-27-4 chloroacetophenone, 2-
75-45-6 chlorodifluoromethane (HCFC-22)
7440-48-4 cobalt and cobalt compounds
111-42-2 diethanolamine
68-12-2 dimethyl formamide
106-88-7 epoxybutane, 1,2-
100-41-4 ethyl benzene
74-85-1 ethylene
107-21-1 ethylene glycol
96-45-7 ethylene thiourea
  fluorides and fluoride compounds
87-68-3 hexachlorobutadiene
67-72-1 hexachloroethane
822-06-0 hexamethylene-1,6-diisocyanate
110-54-3 hexane
78-59-1 isophorone
67-63-0 isopropyl alcohol
78-93-3 methyl ethyl ketone (or 2-butanone)
1634-04-4 methyl ter-butyl ether
101-68-8 methylene diphenyl diisocyanate
7697-37-2 nitric acid
156-10-5 nitrosodiphenylamine, p-
7664-38-2 phosphoric acid
115-07-1 propylene
107-98-2 propylene glycol methyl ether
7446-34-6 selenium sulfide
7440-22-4 silver and silver compounds
96-09-3 styrene oxide
7664-93-9 sulfuric acid
79-00-5 trichloroethane, 1,1,2-
121-44-8 triethylamine
108-05-4 vinyl acetate
593-60-2 vinyl bromide