Designations in US EPA Region 9 for the 1997 8-hour Ozone (o3) National Ambient Air Quality Standards


CALIFORNIA

Sutter County (part), CA
(Sutterf Butte s)



¦Nevada County (Western part), CA

San Francisco
Bay Area, CA

0	25 50	100 Miles

1	I I I I I I I I

DESIGNATIONS IN US EPA REGION 9 FOR THE
1997 8-HOUR OZONE (Os)
NATIONAL AMBIENT AIR QUALITY STANDARDS
I | Nonattainment/Subpart 2/Extreme

~	Nonattainment, Subpart 2/Severe-17

~	Nonattainment/Subpart 2/Severe-15

~	Nonattainment/Subpart 2/Serious

~	Nonattainment/Subpart 2/Moderate

~	Nonattainment/Subpart 2/Marginal

~	Attainment (Maintenance)

~	Unci assifi abl e/Attainment

The 1997 primary and secondary national ambient air quality standards (NAAQS)
for 8-hour ozone are 0.08 parts per million (ppm). Areas violating the NAAQS are
designated "Nonattainment." Other Pacific territories under EPA Region 9 juris-
diction (not shown on map) are designated "Unclassifiable/Attainment."

Sources: Title 40 CFR Part 81, §303, 305, 312, 329, 352, 353, 354 (2012),
78 FR 33230 (July 5, 2013), 78 FR 1149 (January 8, 2013),	A CDA

78 FR 58189 (September 23, 2013), ESRI (2006), TANA (2006).	tMrV

REGION 9-AIR

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Ventura County, CA \

Los Angeles^!
South Coast A i rBasi rWG

HAWAII

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