Air Quality Planning and Science Division
Variance Hearing Notices
Variance Application Public Hearings
Occasionally a public hearing is conducted to consider an application for variance from a specific volatile organic compound (VOC) limit in the consumer products regulation. If a variance is granted to the applicant, it will provide them temporary relief from complying with the applicable VOC limit. The available variance hearing notices and their affected consumer product categories are listed below.
- March 18, 2005 - Antiperspirants and Deodorants
- March 18, 2005 - Antiperspirants and Deodorants
- November 21, 2002 - Multi-Purpose Lubricants
- July 11, 2002 - Aerosol Coating
- February 13, 2002 - Adhesives
- September 28, 2000 - Hair Mousses
- December 17, 1999 - Hair Mousses
- March 2, 1999 - Aerosol Insect Repellents
- November 12, 1998 - Dusting Aids
- November 9, 1998 - Antiperspirants and Deodorants
- September 29, 1998 - Antiperspirants and Deodorants
Information on variances for Consumer Products can be found in Article 2, § 94514. Variances.
Information on variances for Aerosol Coating Products can be found in Article 3, § 94525. Variances.
2020 San Diego Ozone State Implementation Plan
The California Air Resources Board adopted the San Diego County Air Quality Management Plan for attaining the Federal 8-hour 75 parts per billion (ppb) and 70 ppb Ozone standards at a public hearing to be held on November 19, 2020. The plan projects attainment for the standards by 2026 and 2032, respectively. Below you will find links to the Air Quality Management Plan and CARB's staff report as well as other documentation.
CARB Documents
- Public Notice (October 16, 2020)
- Staff Report (October 16, 2020)
- Resolution 20-29 (November 19, 2020)
- 2025 Updates to Motor Vehicle Emissions Budgets (February 14, 2025)
District Documents
- Plan (Approved October 14, 2020)
- RACT Demonstration (Approved October 14, 2020)
Status of District Implementation of SCM for Automotive Coatings
Listed below is the rulemaking schedule for the air districts that have planned a workshop or hearing for proposed amendments to their automotive coatings rules, consistent with the Suggested Control Measure (SCM).
The list is provided solely as an information service. Each individual air district is responsible for their rulemaking schedule. The California Air Resources Board is not responsible for scheduling dates, times, or locations of the workshops and/or hearing or any changes of those dates and times. Therefore, the dates listed are subject to change by the air districts. It is recommended that if you are interested in attending a workshop or hearing that you contact the individual air district prior to making travel plans.
Districts that have adopted the Suggested Control Measure
| District | Rule Number | Adopted Date |
| Bay Area AQMD | Rule 8-45 | December 3, 2008 |
| Imperial County APCD | Rule 427 | February 23, 2010 |
| Mojave Desert AQMD | Rule 1116 | August 23, 2010 |
| Placer County APCD | Rule 234 | October 14, 2010 |
| Sacramento Metropolitan AQMD | Rule 459 | August 25, 2011 |
| San Diego County APCD | Rule 67.20.1 | June 30, 2010 |
| San Joaquin County APCD | Rule 4612 | September 21, 2006 |
| San Luis Obispo APCD | Rule 423 | November 19, 2008 |
| Santa Barbara County APCD | Rule 339 | June 19, 2008 |
| South Coast AQMD | Rule 1151 | December 2, 2005 |
| Ventura County APCD | Rule 74.18 | November 11, 2008 |
| Yolo-Solano AQMD | Rule 2.26 | December 10, 2008 |
Suggested Control Measure for Automotive Coatings
The California Air Resources Board (CARB), in cooperation with the air pollution control and air quality management districts (district), developed a Suggested Control Measure for Automotive Coatings (SCM).
2005 Suggested Control Measure Documents
The SCM promotes uniformity amongst district rules, improves enforceability, and achieves additional reductions of volatile organic compounds. The Board approved the SCM on October 20, 2005. This web page contains links relevant to the development of the SCM.
- Status of District Implementation of SCM
- Staff Report for SCM
- 2002 Survey of Automotive Refinishing Coatings
Rules Log Database (RLDB)
The Rules Log Database (RLDB) chronicles the history of rules controlling sources of air pollution, as developed and adopted by California's 35 air pollution control and air quality management districts. The RLDB lists the dates the district board first adopted and subsequently amended or rescinded a rule, and the date the California Air Resources Board (CARB) received the rule. The RLDB also lists the date the rule was submitted, upon request of the district, to the United States Environmental Protection Agency (U.S. EPA) for inclusion in to the State Implementation Plan (SIP). Finally, the RLDB gives the dates and types of U.S. EPA rulemaking actions on the rule.
Currently, the RLDB contains records for rules that are intended by the districts to be revisions to the SIP and which were adopted or amended during the period January 1, 1981, to the present.
Access the RLDB
View the Rules Log Database (RLDB)
U.S. EPA's "Little Blue Book"
Contact
Emissions from Automotive Maintenance and Repair Activities
ARB Presentation on the Draft Proposed ATCM |
Click here to start slide presentation. |
Table of Contents |
Information Gathering (continued) Evaluation of Alternative Products and Processes Evaluation of Alternative Products and Processes (cont.) |
Presented by: Mark Williams |
Air Toxics Program
Emissions from Automotive Maintenance and Repair Activities
California Greenhouse Gas Inventory - Forests and Other Lands
Background
The ARB's greenhouse gas (GHG) inventory for forests and other lands tracks the removal of carbon dixoide from the atmosphere and emissions of GHGs to the atmosphere. The inventory includes carbon dioxide uptake by vegetation and GHG emissions from wild and prescribed fires, the decomposition and combustion of residues from harvest, conversion to other land types, and discarded wood products. The key GHGs of concern are carbon dioxide, methane and nitrous oxide. The exchange of carbon dioxide between the atmosphere and land occurs through uptake by plant photosynthesis and release via respiration, and the decomposition and combustion of biomass. Methane is emitted during incomplete combustion of biomass and under anaerobic conditions in soils. Nitrous oxide is emitted from combustion of biomass.
Current forest sector emission and sequestration estimates in the ARB's GHG inventory are based on a 2004 California Energy Commission study which quantified carbon stock in forests and rangelands. The study focused on a time period from 1994 to 2000 and was geographically limited to the northern part of the State. Results from the study were extrapolated to include the entire state and to other years. The study was limited in geographic and temporal scope and afforded few options for updating. Updated methods for regular periodic quantification of greenhouse gas fluxes on forest, range, and other natural lands are in development.
Research and Planned Improvements
In 2011, ARB contracted with researchers from University of California (UC) Berkeley to develop a new data-driven methodology for assessing carbon stock changes for all land in California except agricultural and urban areas. The new methods use California specific land based data sets and satellite remote sensing data. The covered ecosystems include forests, woodlands, shrub lands, grasslands, and wetlands. Data sources for the new method include Forest Inventory and Analysis (FIA) ground-based data (vegetation type, tree species and dimensions, percent canopy cover, etc.) from the USDA-Forest Service, remote sensing products from NASA's MODIS sensor, geospatial vegetation data (vegetation community type, canopy height, percent canopy cover) from the federal Landscape Fire and Resource Management Planning Tools Project (Landfire), geospatial fire and harvest occurrence data from CalFIRE, and ancillary data on shrub lands and grasslands.
The method enables analysts to retrospectively assess ecosystem carbon stock changes resulting from fire, human activities, and other processes. It will enable monitoring of changes on the land over time and periodic quantification of the GHG flux associated with changes in ecosystem carbon stocks. The research has generated a wealth of new data to support a planned update to the GHG inventory.
Additional work is needed to evaluate the data provided by the UC Berkeley research, to incorporate additional new data, and to identify further research needed to expand use of these tools. The sources and methods for quantifying ecosystem carbon and GHG flux in this sector are complex. Continued refinements will advance carbon quantification, attribution of GHG flux by disturbance process, and reduce uncertainty.
The UC Berkeley research report describing the development of the new methodology is available below.
- Battles, Gonzalez et al. California Forest and Rangeland Greenhouse Gas Inventory Development, Final Report [PDF-2.8 mB]
Links
For general questions regarding the GHG inventory for forests and other lands, please contact: Anny Huang, Manager, Emission Inventory Analysis Section, Phone: (916) 323-8475
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