Tuscan Buttes, CA

Sacramento Metro, CACalaveras County, CA

San FranciscoBay Area, CA

Mariposa County, CATuolumne County, CA

Butte County, CA

ImperialCounty, CA

Amador County, CA

San Luis Obispo(Eastern part), CA Kern County

(Eastern Kern), CA

Nevada County (Western part), CA

Los Angeles-San Bernardino Counties(West Mojave Desert), CA

Riverside County(Coachella Valley), CA

San Diego County, CA

Los Angeles-South CoastAir Basin, CA

Phoenix-Mesa, AZ

Yuma, AZ

Sutter Buttes, CA

San JoaquinValley, CA Las Vegas, NV

Morongo Band of Mission Indians (Nonattainment/Serious)Ventura County, CA

Pechanga Band of Luiseno Mission Indiansof the Pechanga Reservation (Nonattainment/Marginal)

CALIFOR NIACALIFOR NIA

NEVADANEVADA

AR IZ ONAAR IZ ONA

HAW AIIHAW AII

GUAMGUAM

T he 2015 prim a ry a n d secon da ry 8-hour O3NAAQS is 0.070 pa rts per m illion (ppm ) or70 pa rts per billion (ppb). Area s viola tin g the NAAQS a re design a ted "Non a tta in m en t",a n d a re cla ssified ba sed on the severity of their ozon e levels (a s determ in ed ba sed onthe a rea 's “design va lue,” which represen ts a ir qua lity in the a rea for the m ost recen tthree yea rs). All Pa cific territories un der U.S . jurisdiction n ot shown on this m a p a redesign a ted "Atta in m en t/Un cla ssifia ble". T he Tuscan Buttes, CA a n d Sutter Buttes, CAn on a tta in m en t a rea s a re represen ta tion a l on this m a p; true boun da ries a re n ot showndue to sca le.S ources: 83 FR 25776 (Jun e 4, 2018), 83 FR 10376 (M a rch 9, 2018), T eledyn e (2012).AIR 18094 - US EPA R egion 9 2015 8-hour ozon e NAAQS design a tion s.m xd(S eptem ber 13, 2018)

´0 50 100M iles

0 50 100K ilom eters

DES IGNAT IONS IN US EPA R EGION 9FOR T HE 2015 8-HOUR OZ ONE (O3)NAT IONAL AM BIENT AIR QUALIT Y

S T ANDAR DS (NAAQS )Non a tta in m en t/Extrem eNon a tta in m en t/S evere-15Non a tta in m en t/S eriousNon a tta in m en t/M odera teNon a tta in m en t/M a rgin a lNon a tta in m en t/M a rgin a l (R ura l T ra n sport)

Atta in m en t/Un cla ssifia bleS ta te boun da ry or coa stlin eCoun ty boun da ry