Air quality planning involves the protection and improvement of the precious air resource we breathe. On this page you will find the District's air quality plans and CEQA guidelines forachieving and maintaining the health based ambient air quality standards in our region as well as information on how the air quality of the Monterey region compares to the Stateand federal air standards. We also provide county-level inventories of green house gas emissions from the area's on-road motor vehicles.

Glossary of Air Pollution and Regulatory Terms

Ambient Air Quality Standards, Monitoring Network and Attainment Status for the North Central Coast Air Basin (NCCAB)

• State and Federal Ambient Air Quality Standards
• NCCAB Ambient Air Monitoring Stations as of June 2009
• 2006 to 2008 Exceedances and Designation Values for the State Ambient Air Quality Standards
• NCCAB Attainment Status as of January 2009

District Air Plans

• 2008 Air Quality Management Plan
• 2007 Federal Maintenance Plan
• 2005 Particulate Matter Plan

District CEQA Air Quality Guidelines

• 2008 CEQA Guidelines

CEQA Reference Documents and Tools

• Consistency Procedure 2011
• Initial Study Checklist
• URBEMIS 2007 Version 9.2.4 - Freeware for calculating air pollution emissions from land use projects
• ARB Heavy Duty Diesel Truck Idling Regulation

Greenhouse Gas (GHG) Emission Inventories

• Santa Cruz County 2004 Mobile Source GHG Inventory Report
• NCCAB 2010 On-Road Motor Vehicle Inventory Spreadsheet
• Monterey Co. 2010 On-Road Motor Vehicle Inventory Spreadsheet
• Santa Cruz Co. 2010 On-Road Motor Vehicle Inventory Spreadsheet
• San Benito Co. 2010 On-Road Motor Vehicle Inventory Spreadsheet (NOT AVAILABLE - INVENTORY UNDER CONSTRUCTION)
• ARB Statewide GHG Inventory 1990 to 2004
• ARB Statewide GHG Inventory 2000 to 2006