Welcome to the ARB Staff's Toxics QA Review Page.

This page last reviewed December 29, 2016


Thank you for helping us review the CEIDARS data.
This page is a district internal review page only. If you need assistance, please contact Chris Halm (916) 323-4865. Thanks.


  1. QA of Toxics Data
    ARB staff has identified several facilities with toxic emissions in our CEIDARS (/app/emsinv/facinfo/facinfo.php) inventory that we would like district staff to review for accuracy. This list was compiled in part by identifying the highest prioritization (potency-weighted) scores for each toxic in our point source inventory. We also identified several facilities that emit significantly more of a listed toxic than any other facility in California. Previous requests have also included facilities where emissions decreased from 2001 to 2005, or where a high priority facility is missing in the 2005 database.

    Please confirm the accuracy of the emissions data.



  2. Linking prioritization scores and risk data with CEIDARS facilities.
    Please provide prioritization scores, and HRAs where available, for all facilities subject to AB 2588 in CEIDARS so we can better track facilities. A list of facilities that emit >10tpy of NOX, SOX, PM, or ROG... or that have reported a toxic is here:
    2A. Facility List This list does not include some sources that are likely subject to AB 2588, but have not reported any toxics.

  3. Location Data
    ARB staff is verifying location data of facilities in CEIDARS, with an emphasis on large emission sources, including facilities in CHAPIS (Community Health Air Pollution Information System). New procedures are in place to automate this process each year. Some facility locations may need to be verified by districts. More information will be provided here soon.

  4. Diesel in CEIDARS
    Diesel emissions should be reported using toxics emittent ID# 9901, and using criteria pollutant PM10 with appropriate SCC Codes. When the criteria and toxic emissions are not equal, it is difficult for ARB to determine which emissions are correct. Our analysis is here: Diesel

  5. California Toxics Inventory (CTI) - Air toxics inventory of all sources (Point, Areawide, On-Road Mobile, Off-Road Mobile, and Natural)

  6. Deleted Pollutants
    The following pollutants have been removed from the CEIDARS Pollutant Table:
    We used to use these POLs... Now we use these POLs.
    Old POL
    (No longer in CEIDARS)
    POLN (of Old POL) Correct POL
    (in CEIDARS)
    POLN (of Correct POL)
    1015 [D] Arsenic compounds (inorganic) 1016 Arsenic compounds (inorganic)
    1021 [D] Beryllium compounds 7440417 Beryllium
    1045 [D] Cadmium compounds 7440439 Cadmium
    1067 [D] Copper compounds 7440508 Copper
    1105 [D] Fluorocarbons (chlorinated and brominated) 1104 Fluorocarbons (chlorinated)
    1120 [D] Hexachlorocyclohexanes 608731 Hexachlorocyclohexanes
    1130 [D] Lead compounds (Inorganic) 1128 Lead compounds (inorganic)
    1132 [D] Manganese compounds 7439965 Manganese
    1133 [D] Mercury compounds 7439976 Mercury
    1145 [D] Nickel compounds 7440020 Nickel
    1170 [D] Selenium compounds 7782492 Selenium
    1204 [D] Toluene diisocyanates 26471625 Toluene diisocyanates
    1210 Xylenes 1330207 Xylenes (mixed)
    1211 [D] Zinc compounds 7440666 Zinc
    3333393 [D] Nickel carbonate 3333673 Nickel Carbonate
    124403 [D] Dimethylamine dropped from CEIDARS
    1040 [D] Bromine Compounds (inorganic) dropped from CEIDARS

    Silica, crystalline (respirable) has POL=1175 (not 7631869, as shown in previous version of Consolidated Table)
    [D] Acetone will be retained in CEIDARS.


  7. Missing Criteria and Toxics Emissions
    Most facilities in CEIDARS have both criteria and toxic emissions. However, some large (>10tpy) criteria pollutant facilities do not have corresponding toxics data, and some facilities with large (>10tpy) toxics do not have corresponding criteria pollutant data. Each of these lists is linked below. [Note: Some facilities are exempt from reporting toxics because their risk assessment is less than 1 per million. The HRA score for these facilities must be reported in CEIDARS.]
    Criteria Pollutant Facilities Missing Toxics Data
    Toxics Facilities Missing Criteria Pollutants

  8. Hexavalent Chromium Emissions
    Highest Hex Chrome Sources for 2004-2006

  9. FEE_CAT
    The Fee_Cat Code in the Facility Table indicates the status of the facility (low, medium, or high risk) using letter codes A-G, with a few additional codes for exempt facilities. Fee_Cat codes are being corrected, based on AB 2588 State Fee information.

  10. Chrome Platers
    ARB has compiled updated emission estimates for chrome platers. ARB staff is reconciling the data for South Coast, which includes more than 75% of all chrome platers in CA. Chrome Platers in SCAQMD

  11. Comparison by SIC, POL, and SCC
    ARB compared the number of different SIC Codes, Pollutants, and SCC Codes in CEIDARS from 2001 through 2004 to identify trends in the toxics data. The data clearly shows that districts are submitting more data on gasoline service stations; more sources are reporting benzene and formaldehyde emissions (primarily from South Coast's AER); and more diesel engines are being reported, along with a higher percentage of generic classifications for some processes (SCC Codes). More information is here: by SIC - by Pollutant -- by SCC (Top20)

  12. Comparison with TRI data
    All of the top emitters in the U.S. EPA's TRI 2005 Facility Inventory reported criteria pollutants in the 2004 CEIDARS Inventory. Some toxics data appears to be inconsistent. TRI data

  13. Potency-weighted Toxics
    A Rank-Ordered List of Toxics has been compiled, which shows the highest potency-weighted scores for 1996, 2001, 2004, 2005, and 2006.

  14. Missing Emissions Data
    Some facilities have no emissions.

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