EPA collects data from the states and regions on their air quality and state implementation plan (SIP) progress. This information is compiled in a database, and used to create reports, trend charts, and maps.

SIP status reports

Reports for nonattainment area SIP requirements

State Designated Area Reports - For lead (2008), find the status of a state's submissions and EPA actions on those submissions.
National Designated Area Reports - For lead (2008), find a single SIP required element for all applicable states, find the status of state submissions and EPA actions on those submissions.
NAAQS Designated Area Reports - For lead (2008), find the status of all state submissions and EPA actions on those submissions.

Reports for infrastructure SIP requirements

• Infrastructure SIP status reports for lead national SIP status
• Infrastructure SIP status reports listed by state and then search for lead (2008)

SIPs approved by EPA

• View approved SIPs by state: organized by states in each EPA region.

Air quality data 

Lead air quality trends: View lead level trends; measured nationally, regionally, and locally; up to 2014.

Lead Design Values: view statistics that describe the air quality status of a given area relative to the level of EPA's National Ambient Air Quality Standards. These Excel reports are listed by pollutant. 

Green Book

• Lead Green Book: listings of areas designated nonattainment for lead (2008). It includes current designation and classification status, area maps, reports, and Federal Register notices.