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

Sutter County (part), CA
(Sutter Butte s)
DESIGNATIONS IN US EPA REGION 9 FOR THE
1997 8-HOUR OZONE (Os)
NATIONAL AMBIENT AIR QUALITY STANDARDS
| Nonattainment/Subpart 2/Extreme
~ Nonattainment/Subpart 2/Severe-15
] Nonattainment/Subpart 2/Serious
] Nonattainment/Subpart 2/Moderate
] Nonattainment/Subpart 2/Marginal
] Attainment (Maintenance)
Unci assifi able/Attainment
San Francisco
Bay Area, CA '.
Thel997 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
ESRI (2006). TANA (2006).	tlTr\
AIR1300055 l.mxd (August 20. 2013)	REGION 9 - AIR

GUAM
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HAWAII

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