The following Web pages provide information about EPA's air monitoring regulations and guidance and state and local monitoring plans.

• National Air Monitoring Strategy

• Sampling Schedule Calendar

• State and Local Monitoring Plans

• Monitoring Regulations

• 40 CFR 50 - National Primary and Secondary Ambient Air Quality Standards (including Federal Reference Methods)Exit

• 40 CFR Part 53 — Ambient Air Monitoring Reference and Equivalent MethodsExit

• 40 CFR Part 58 — Ambient Air Quality SurveillanceExit

• Policy Memoranda and Technical Guidance

• National Program Manager (NPM) Guidance - Monitoring Appendix

• Network Assessment Tools and Guidance