Air Resources Board

Mary

1001

0.

I Street

Nichols,

P.O.

Chairman

Box 2815 W

Matthew Rodriquez Sacramento, California 95812 www.arb.ca.gov Edmund G. Brown Jr.

Secretaiy for Governor

Environmental Protection

November 25, 2013

Mr. Jared Blumenfeld

Regional Administrator

Region 9

U.S. Environmental Protection Agency

75 Hawthorne Street

San Francisco, California 94105

Dear Mr. Blumenfeld:

We are transmitting our recommendations for area designations and boundaries under

the federal air quality standards for particulate matter 2.5 microns or less in diameter

(PM2.5) as requested in the U.S. Environmental Protection Agency (U.S. EPA)

memorandum of April 16, 2013 from the Assistant Administrator to the Regional

Administrators.

PM2.5 Nonattainment Areas

We base our recommendations on ambient PM2.5 concentrations measured from 2010

through 2012 by over 90 Federal Reference Method (FRM) and Federal Equivalent

Method (FEM) monitors located throughout California. FEM data for both the

South Coast Air Basin and the San Diego Air Basin were excluded from this process as

formally requested by the affected air districts and detailed in the accompanying staff

report.

The Air Resources Board (ARB) recommends that U.S. EPA designate the following

three areas as nonattainment for the revised PM2.5 annual standard of 12.0 tg/m 3,with

the remaining areas of the State designated as unclassifiable/attainment:

• South Coast Air Basin.

• San Joaquin Valley Air Basin.

• Imperial County (partial).

As specified in the enclosed Staff Report, ARB staff recommends that the

nonattainment area boundaries coincide with the each area’s current PM2.5

nonattainment boundary.

The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption.

For a list of simple ways you can reduce demand and cut your energy costs, see our website: http:llwww.arb.ca.ov.

California Environmental Protection Agency

Printed on Recycled Paper
Mr. Jared Blumenfeld

November25, 2013

Page 2

ARB’s designation recommendations include only non-tribal lands. ARB is committed to

working with tribal authorities to protect and enhance the ambient air quality throughout

the State.

If you have any questions, please contact Lynn Terry, Deputy Executive Officer, at

(916) 322-2739, or Sylvia Vanderspek, Branch Chief, Air Quality Planning Branch, at

(916) 324-7163.

Sincerely,

rdW.o

Executive Officer

Enclosure

cc: Mr. Brad Poirez

Air Pollution Control Officer

Imperial County Air Pollution Control District

150 South 9th Street

El Centro, California 92243

Mr. Seyed Sadredin

Air Pollution Control Officer

San Joaquin Valley Air Pollution Control District

1990 E. Gettysburg

Fresno, California 93736

Mr. Barry Wallerstein

Air Pollution Control Officer

South Coast Air Quality Management District

21865 E. Copley Drive

Diamond Bar, California 91765-4182

Ms. Lynn Terry

Deputy Executive Officer

Executive Office

Ms. Sylvia Vanderspek, Chief

Air Quality Planning Branch

Qir Quality Planning and Science Division
State of California

PM2.5 Area Designation

Recommendations for the

Revised Federal PM2.5 Annual Standard 

Release Date: October 28, 2013

Public Meeting Date: November 21-22, 2013

 

California Environmental Protection Agency

AIR RESOURCES BOARD
Page Intentionally Left Blank
Summary

On December 14, 2012, the U.S. Environmental Protection Agency (U.S. EPA)

strengthened the annual National Ambient Air Quality Standard (NAAQS or 

standard) for particulate matter 2.5 micrometers or less in diameter (PM2.5) from 

15.0 μg/m3 to 12.0 μg/m3. The State of California is required to submit area 

designation recommendations and appropriate boundaries to U.S. EPA for this 

standard by December 14, 2013. The purpose of this report is to share the 

staff’s technical analysis and recommendations to be sent to U.S. EPA. 

U.S. EPA will make final designations in December 2014.

California Air Resources Board (ARB) staff has performed an analysis to 

determine appropriate designation areas throughout the State using criteria 

outlined in the U.S. EPA’s guidance memorandum.

1

 Determination of 

attainment/nonattainment is based on comparing a three-year average of the 

annual average concentration to the level of the standard. This is known as the 

design value. These three-year rolling averages are updated once the year’s 

monitoring data is reviewed and certified. 

Due to the success of ongoing programs, many California counties already meet 

the 12.0 μg/m3 standard. Based on 2010-2012 PM2.5 air quality monitoring data, 

the three areas that do not meet the standard are: South Coast Air Basin, San 

Joaquin Valley and Imperial County. Staff is recommending that the boundaries 

for the 15.0 μg/m3 standard for the South Coast Air Basin and the San Joaquin 

Valley be retained for the new standard. The recommended boundary for 

Imperial County is the same as the boundary for the 35 μg/m3 24-hour standard. 

While U.S. EPA is expected to base final designations on 2011-2013 PM2.5 data, 

the attainment status is not expected to be different with the addition of 2013 

data. 

Air Quality Analysis

ARB maintains a comprehensive PM2.5 monitoring network, including Federal 

Reference Method (FRM) mass samplers, Federal Equivalent Method (FEM) 

continuous mass samplers, and chemical speciation samplers. ARB staff uses

these monitoring data to determine PM2.5 concentrations in relation to the federal 

standard. Speciation samplers are used to determine the nature of the PM2.5

pollution and to assist in assessing the efficacy of emission reduction strategies. 

ARB staff’s initial designation recommendations are based on ambient PM2.5

concentrations measured from 2010 through 2012 by over 90 FRM/FEM

monitors, sited and operated in accordance with federal requirements, and 

located throughout the State. 

U.S. EPA allows for the exclusion of certain FEM data, if the data have compared 

poorly with FRM data, in accordance with the Particulate Matter NAAQS rule 

1 April 16, 2013, Initial Area Designations for the 2012 Revised Primary Annual Fine Particle 

National Ambient Air Quality Standard, Memorandum from Gina McCarthy, Assistant 

Administrator, Office of Air and Radiation to Regional Administrators, Regions 1-10.

1

 
published on January 15, 20132 and specific to the provisions detailed in 

§58.10 (b)(13) and §58.11 (e). Consequently, formal requests were submitted to 

the U.S. EPA by the South Coast Air Quality Management District (South Coast 

AQMD)3 and the San Diego County Air Pollution Control District (San Diego

APCD)4 to exclude the use of FEM data in comparison to the NAAQS due to 

insufficient comparability to collocated PM2.5 monitors. In anticipation of U.S. 

EPA granting this request, the data from these monitors were not used in 

calculating the 2012 annual PM2.5 design values. 

The U.S. EPA’s guidance memorandum also states that air quality monitoring 

data affected by exceptional events may be excluded from use in identifying a 

violation if certain criteria are met. The 2012 design values in this document do 

not reflect the exclusion of impacts from exceptional events, as these events 

would not affect attainment status based on data for 2010 through 2012. 

However, should this change with the addition of data for 2013, ARB staff will 

submit any required documentation to U.S. EPA in accordance with federal policy

on exceptional events prior to final designations. 

The following table provides the annual PM2.5 design value for three air districts 

with monitors violating the standard: South Coast AQMD, San Joaquin Valley Air 

Pollution Control District (San Joaquin Valley APCD), and the Imperial County Air 

Pollution Control District (Imperial County APCD). Attachment 1 contains the 

PM2.5 design values for all monitors in California.

Table 1: Nonattainment Area Design Values

Air District Nonattainment Area

High Site

2012

Annual Average

Design Value

(μg/m3)

South Coast AQMD Mira Loma, Riverside County 15.2

San Joaquin Valley APCD Clovis, Fresno County 16.0

Imperial County APCD Calexico, Imperial County 14.0

Boundary Analysis

In California, if the pollution problem is regional in nature, the primary 

considerations for air quality planning are air basin and air district boundaries. 

Consistent with State law, California’s air basin boundaries were established

based on a scientific assessment of emissions, geography, and meteorology,

with consideration of political jurisdictions. Basin boundaries are formally 

2 National Ambient Air Quality Standards for Particulate Matter; Final Rule. 78 Federal Register 

10 (15 January 2013), pp. 3086-3287.

3 South Coast Air Quality Management District. Annual Air Quality Monitoring Network Plan. 

July 2013. http://www.aqmd.gov/tao/AQ-Reports/AQMonitoringNetworkPlan/AQnetworkplan.htm. 4 San Diego Air Pollution Control District. 2012 Air Quality Network Plan. July 2013. 

http://www.sdapcd.org/air/reports/2012_network_plan.pdf.

2

 
adopted by ARB in regulation. Local air districts have been established, and 

their jurisdictions defined, by State statute. ARB typically uses a combination of 

air basin and air district lines to identify boundaries for areas that violate air 

quality standards, with the exception of situations where a single city or 

community has a unique air pollution problem distinct from the region. 

The Clean Air Act requires that a nonattainment area must include not only the 

area that is violating the standard, but also nearby areas that contribute to 

violations. Accordingly, ARB’s recommended nonattainment boundaries are 

sufficiently large to include both the violating and contributing areas. U.S. EPA 

guidance recommends that in making boundary recommendations for 

nonattainment areas, states evaluate each area on a case-by-case basis in 

consideration of the following five factors:

• Air quality data

• Emissions and emission-related data

• Meteorology

• Geography/topography

• Jurisdictional boundaries

The boundaries already in existence for the 24-hour PM2.5 standard, and in the 

case of the South Coast and San Joaquin Valley Air Basins, the previous annual 

PM2.5 standard, are the result of extensive technical analyses,5 and continue to 

appropriately reflect conditions under the revised annual PM2.5 standard. 

Designation Recommendations

After consideration of the five factors outlined in U.S. EPA’s guidance 

memorandum, ARB staff recommends the nonattainment area boundaries 

outlined below.

Imperial County Air Pollution Control District

No portion of Imperial County was designated nonattainment for the previous 

annual standard of 15 μg/m3. In 2006, after extensive technical analysis, 

U.S. EPA designated a portion of Imperial County as nonattainment of the 

24-hour PM2.5 standard of 35 μg/m3. Based on 2010-2012 monitoring data, only 

one monitor in Imperial County is in nonattainment for the revised annual PM2.5

standard, with a design value of 14.0 μg/m3

. The violations of the PM2.5 standard 

are localized at the monitor at Calexico, on the U.S. – Mexico border, at the 

southern end of Imperial County. ARB staff’s assessment of air quality in the 

region indicates the area would attain the PM2.5 air quality standard but for 

emissions emanating from outside of the United States, in particular, from the 

5 Letter from James Goldstene, Executive Officer, ARB, to Wayne Nastri, Regional Administrator, 

U.S. EPA , December 17, 2007, plus enclosures; Letter from Wayne Nastri, Regional 

Administrator, U.S. EPA, to Arnold Schwarzenegger, Governor, State of California, 

August 18, 2008, plus enclosures; Letter from James Goldstene, Executive Officer, ARB, to 

Wayne Nastri, Regional Administrator, U.S. EPA , October 15, 2008, plus enclosures.

3

 
much larger adjacent city of Mexicali, Mexico. Consideration of U.S. EPA’s five 

factors indicates that this international pollutant transport contributes to elevated 

PM2.5 levels at Calexico and, to a much lesser extent, the urban area to the 

north. This analysis of the contribution of international transport to the annual 

PM2.5 standard is consistent with the assessment previously submitted for the 

recently revised 24-hour PM2.5 standard and U.S. EPA’s extensive technical 

analysis in support of the final designations.

5

 Consistent with the previous 

assessment of the impacts of international pollutant transport on PM2.5 in 

Imperial County, ARB recommends the annual PM2.5 nonattainment area 

coincide with the nonattainment area already in existence. 

The recommended Imperial County PM2.5 nonattainment area includes the urban 

areas of Calexico, Brawley, El Centro, Holtville, Imperial, Seeley, and 

Westmorland. The area is under the jurisdiction of the Imperial County Air 

Pollution Control District. The official boundary is provided in Attachment 2.

San Joaquin Valley Air Basin

In 1997, the San Joaquin Valley Air Basin (San Joaquin Valley) was designated 

nonattainment of the annual PM2.5 standard of 15.0 μg/m3

. Based on 2010-2012

monitoring data, the San Joaquin Valley remains in nonattainment of the revised 

annual PM2.5 standard with a design value of 16.0 μg/m3 measured at the Clovis–

N Villa Ave monitoring site. In addition to data recorded at the high site listed in 

Table 1, other monitors distributed throughout the San Joaquin Valley record 

violations of the standard (Attachment 1). Consideration of U.S. EPA’s five 

factors indicates broad regional contribution to elevated PM2.5 levels and 

supports the use of the air basin boundary which reflects the regional nature of 

PM2.5 pollution in this area. Consistent with this recent analysis, the assessment 

previously submitted for the recently revised 24-hour PM2.5 standard, and U.S. 

EPA’s extensive technical analysis in support of their final designations,5 ARB 

recommends the annual PM2.5 nonattainment area coincide with the 

nonattainment area already in existence. 

The recommended San Joaquin Valley PM2.5 nonattainment area consists of 

San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and Western 

Kern Counties. The area is under the jurisdiction of the San Joaquin Valley Air 

Pollution Control District. The official boundary is provided in Attachment 2.

South Coast Air Basin

In 1997, the South Coast Air Basin (South Coast) was designated nonattainment 

of the annual PM2.5 standard of 15.0 μg/m3. Based on 2010-2012 monitoring 

data, the South Coast remains in nonattainment of the revised annual PM2.5

standard with a design value of 15.2 μg/m3 measured at the Mira Loma–

Van Buren monitoring site. In addition to data recorded at the high site listed in 

Table 1, other monitors distributed throughout the South Coast record violations 

of the standard (Attachment 1). Consideration of U.S. EPA’s five factors 

indicates broad regional contribution to elevated PM2.5 levels and supports the 

4
use of the air basin boundary which reflects the regional nature of PM2.5 pollution 

in this area. Consistent with this recent analysis, the assessment previously 

submitted for the recently revised 24-hour PM2.5 standard, and U.S. EPA’s 

extensive technical analysis in support of their final designations,5 ARB 

recommends the annual PM2.5 nonattainment area coincide with the 

nonattainment area already in existence. 

The recommended South Coast PM2.5 nonattainment area includes Western 

Los Angeles (excluding Catalina and San Clemente Islands), Orange, 

Southwestern San Bernardino, and Western Riverside Counties. This area is 

under the jurisdiction of the South Coast Air Quality Management District. The 

official boundary is provided in Attachment 2.

The areas recommended by ARB as nonattainment for the PM2.5 standard are 

illustrated below (Figure 1):

Figure 1: Proposed Nonattainment Areas

5
Page Intentionally Left Blank

6
ATTACHMENT 1

PM2.5 Annual Average and Annual Design Values (ug/m3)

Annual Average Annual Design Values

Basin SiteName 2010 2011 2012 2010 2011 2012

GBV Keeler-Cerro Gordo Road 7.1 8.1 6.7 7.0 7.4 7.3

GBV Mammoth Lakes-Gateway HC

LC Lakeport-Lakeport Blvd 3.0 3.4 3.8 4.5 3.2 3.4

LT South Lake Tahoe-Sandy Way 

MC Echo Summit 

MC Grass Valley-Litton Building 4.5 4.2 3.8 6.2 4.4 4.2

MC Portola-161 Nevada Street 9.7 11.9 13.0 10.9 10.3 11.5

MC Portola-Commercial Street 

MC Quincy-N Church Street 7.1 10.8 9.5 10.9 9.4 9.1

MC San Andreas-Gold Strike Road 4.9 9.1 7.0 6.5 7.2 7.5

MC Truckee-Fire Station 5.6 6.6 6.2 7.0 6.0 6.1

MD Lancaster-43301 Division Street 5.9 7.1 5.4 7.0 6.9 6.1

MD Lancaster-W Pondera Street 

MD Mojave-923 Poole Street 4.6 6.3 6.5 5.5 5.4 5.8

MD 

Ridgecrest-100 West California 

Avenue 5.1 5.6 5.3 6.0 5.5 5.3

MD Victorville-14306 Park Avenue 7.2 6.8 6.7 8.3 7.7 6.9

MD Victorville-Armagosa Road 

NC Eureka-Humboldt Hill 8.2 6.8

NC Eureka-I Street 5.5 6.2 5.4 6.5 6.1 5.7

NC Eureka-Jacobs 5.6 6.6 5.7 6.8 6.4 6.0

NC Ukiah-County Library 6.6 7.6 4.6 8.7 8.6 6.3

NC Willits-125 E Commercial Street 7.7 9.9 7.4 8.3

NCC Carmel Valley-Ford Road 5.7

NCC Hollister-Fairview Road 5.8 5.9 5.1 6.1 5.7 5.6

NCC King City-415 Pearl Street 6.1

NCC Salinas-#3 6.6 6.4 5.6 6.5 6.3 6.2

NCC Salinas-Natividad Road #2 

NCC Santa Cruz-2544 Soquel Avenue 6.5 6.5 5.9 6.3 6.3 6.3

NEP Alturas-W 4th Street 

NEP Yreka-Foothill Drive 4.5 5.5 5.7 5.7 5.1 5.2

SC Anaheim-Harbor Blvd 

SC Anaheim-Pampas Lane 10.2 10.9 10.8 11.8 11.1 10.6

SC Azusa 10.8 12.1 11.0 12.7 12.0 11.3

SC Big Bear City-501 W. Valley Blvd 8.4 8.4 8.0 9.1 8.9 8.2

SC Burbank-W Palm Avenue 12.4 13.2 12.2 13.9 13.6 12.6

SC Compton-700 North Bullis Road 12.5 13.0 11.7 13.2 13.4 12.4

SC Fontana-Arrow Highway 11.9 12.6 12.8 13.8 12.9 12.4

SC Los Angeles-North Main Street 11.9 12.9 12.5 14.1 13.1 12.4

1
ATTACHMENT 1

PM2.5 Annual Average and Annual Design Values (ug/m3)

Annual Average Annual Design Values

Basin SiteName 2010 2011 2012 2010 2011 2012

SC Lynwood 

SC Mira Loma Van Buren 15.2 15.3 15.0 16.9 15.9 15.2

SC Mission Viejo-26081 Via Pera 8.0 8.5 7.9 9.3 8.7 8.1

SC North Long Beach 10.5 11.0 10.3 12.5 11.4 10.6

SC Ontario-1408 Francis Street 13.0 13.3 12.4 14.5 13.7 12.9

SC Pasadena-S Wilson Avenue 10.2 10.8 10.1 11.8 11.1 10.4

SC Pico Rivera 

SC Pico Rivera-4144 San Gabriel 12.5 12.5 11.9 14.1 13.3 12.3

SC Reseda 10.2 10.2 10.5 11.1 10.6 10.3

SC Riverside-Magnolia 11.0 11.8 11.4 12.5 12.0 11.4

SC Riverside-Rubidoux 13.1 13.6 13.5 15.0 14.1 13.4

SC San Bernardino-4th Street 11.1 12.2 11.8 12.5 12.1 11.7

SC South Long Beach 10.4 10.7 10.5 12.2 11.2 10.5

SCC Arroyo Grande-2391 Willow Road 10.0 12.0 9.6 10.5

SCC Atascadero-Lewis Avenue 6.3 7.6 6.2 7.9 7.7 6.7

SCC El Rio-Rio Mesa School #2 8.5 8.8 8.8 9.6 9.2 8.7

SCC Nipomo-Guadalupe Road 8.2 8.3 8.1 8.2 8.2

SCC Ojai-Ojai Avenue 9.5

SCC Piru-3301 Pacific Avenue 8.5 7.6 9.6 9.2 8.5 8.6

SCC

San Luis Obispo-3220 South 

Higuera St 5.5 6.7 6.2 6.4 6.1 6.1

SCC San Luis Obispo-Marsh Street 

SCC

Santa Barbara-700 East Canon 

Perdido 7.7 11.0 8.6 9.2 9.9 9.5

SCC Santa Barbara-W Carillo Street 

SCC Santa Maria-906 S Broadway 5.6 7.8 7.6 6.8 6.9 7.2

SCC Santa Maria-Broadway 

SCC Simi Valley-Cochran Street 8.7 8.7 9.3 9.9 9.2 8.9

SCC Thousand Oaks-Moorpark Road 8.7 8.6 9.5 9.9 9.3 9.0

SD Alpine-Victoria Drive 7.7

SD Camp Pendleton 8.0 12.0 10.7 10.8 10.2

SD Chula Vista 9.6 9.9 10.1 11.1 10.3 9.8

SD El Cajon-Redwood Avenue 10.8 10.6 10.5 12.1 11.2 10.6

SD Escondido-E Valley Parkway 10.5 10.4 10.5 12.7 11.5 10.5

SD San Diego-1110 Beardsley Street 10.4 10.8 11.0 12.0 11.0 10.7

SD San Diego-12th Avenue 

SD San Diego-Kearny Villa Road 8.7

SD San Diego-Overland Avenue 8.7 8.9 8.1 10.2 9.4 8.6

SFB Concord-2956 A Treat Blvd

2
ATTACHMENT 1

PM2.5 Annual Average and Annual Design Values (ug/m3)

Annual Average Annual Design Values

Basin SiteName 2010 2011 2012 2010 2011 2012

SFB Concord-2975 Treat Blvd 7.1 7.8 6.6 8.3 7.8 7.2

SFB Fremont-Chapel Way 8.5 9.1

SFB Gilroy-9th Street 8.2 8.1 7.4 8.6 8.4 7.9

SFB Livermore-793 Rincon Avenue 7.6 7.9 6.6 9.0 8.2 7.4

SFB Napa-Jefferson Avenue 13.7

SFB Oakland-9925 International Blvd 7.8 10.1 9.5 8.8 9.1 9.1

SFB Oakland-West 7.1

SFB Redwood City 8.4 8.8 8.5 8.7 8.6 8.6

SFB San Francisco-Arkansas Street 10.5 9.5 8.2 10.0 9.9 9.4

SFB San Jose-4th Street 

SFB San Jose-Jackson Street 8.8 9.9 9.1 10.2 9.6 9.3

SFB San Jose-Tully Road 

SFB San Pablo-Rumrill Blvd 7.3

SFB San Rafael 10.7 9.9 8.0 9.5

SFB Santa Rosa-5th Street 7.3 8.6 8.3 8.1 8.1 8.0

SFB Vallejo-304 Tuolumne Street 7.7 9.8 9.0 9.1 9.1 8.8

SJV Bakersfield-410 E Planz Road 17.6 14.4 14.7 21.2 18.2 15.6

SJV Bakersfield-5558 California Avenue 14.2 16.2 13.0 18.4 16.5 14.5

SJV Bakersfield-Golden State Highway 

SJV Clovis-N Villa Avenue 14.7 17.9 15.4 16.4 17.0 16.0

SJV Corcoran-Patterson Avenue 17.9 17.1

SJV Fresno-1st Street 13.0 15.5 14.1 15.2 14.5 14.2

SJV Fresno-Garland 14.1

SJV Fresno-Hamilton and Winery 13.4 15.4 12.7 14.9 14.5 13.9

SJV Hanford-S Irwin Street 14.8

SJV Madera-28261 Avenue 14 20.4 16.0

SJV Manteca-530 Fishback Rd 10.8 8.3

SJV Merced-2334 M Street 11.2 10.4 9.5 13.2 11.7 10.4

SJV Merced-S Coffee Avenue 16.3 15.6 11.0 18.2 14.3

SJV Modesto-14th Street 12.3 14.7 11.9 13.8 13.3 12.9

SJV Stockton-Hazelton Street 11.0 11.3 12.4 12.2 11.2 11.6

SJV

Tranquility-32650 West Adams 

Avenue 7.1 8.2 7.1 7.5

SJV Turlock-S Minaret Street 12.7 17.1 14.8 15.3 14.9

SJV Visalia-N Church Street 13.6 16.1 14.8 16.5 15.2 14.8

SS Brawley-220 Main Street 6.3 7.1 8.1 7.5 7.1 7.2

SS Brawley-Main Street 

SS Calexico-Ethel Street 12.8 13.5 15.8 12.9 14.0 14.0

SS El Centro-9th Street 6.6 7.5 7.5 7.5 7.4 7.2

3
ATTACHMENT 1

PM2.5 Annual Average and Annual Design Values (ug/m3)

Annual Average Annual Design Values

Basin SiteName 2010 2011 2012 2010 2011 2012

SS Indio-Jackson Street 6.8 7.2 7.6 7.7 7.3 7.2

SS Palm Springs-Fire Station 5.9 6.0 6.5 6.6 6.2 6.1

SV Auburn-11645 Atwood Road 5.5

SV Chico-East Avenue 

SV Chico-Manzanita Avenue 8.0 12.1 8.2 11.5 10.1 9.4

SV Colusa-Sunrise Blvd 5.0 6.8 7.3 7.5 6.3 6.3

SV Red Bluff-310 S Main Street 9.8 11.1 8.4 9.8

SV Redding-Health Dept Roof 4.6 5.4 5.9 8.4 5.3 5.3

SV Roseville-N Sunrise Blvd 6.6 8.5 6.5 8.4 7.9 7.2

SV Sacramento-Del Paso Manor 8.8 10.5 9.1 10.9 10.0 9.5

SV 

Sacramento-Health Dept Stockton 

Blvd 7.8 10.1 8.2 9.9 9.2 8.7

SV Sacramento-T Street 8.1 10.1 8.3 9.5 9.2 8.8

SV Woodland-Gibson Road 5.7 7.6 6.4 7.6 6.9 6.6

SV Yuba City-Almond Street 5.9 8.0 6.9 8.2 7.3 6.9

SV: Calculated using combined data for Chico-Manzanita and Chico-East (Q1&Q2 data 

are from Manzanita; Q3&Q4 data are from East); 

SJV: 2012 data for Fresno-1st are from Fresno-Garland

These values are based on FRM data only.

4
ATTACHMENT 2

BOUNDARIES FOR RECOMMENDED NONATTAINMENT AREAS

South Coast

Los Angeles County (P)

Orange County

Riverside County (P)

San Bernardino County (P)

The entirety of Orange County and those portions of Los Angeles, Riverside, and 

San Bernardino counties described below:

Los Angeles County (P)

That portion of Los Angeles County which lies south and west of a line described 

as follows: 

Beginning at the Los Angeles-San Bernardino County boundary and running 

west along the Township line common to Township 3 North and Township 2 

North, San Bernardino Base and Meridian; 

then North along the range line common to Range 8 West and Range 9 West; 

then west along the Township line common to Township 4 North and Township 3 

North; 

then north along the range line common to Range 12 West and Range 13 West 

to the southeast corner of Section 12, Township 5 North and Range 13 West; 

then west along the south boundaries of Sections 12, 11, 10, 9, 8, and 7, 

Township 5 North and Range 13 West to the boundary of the Angeles National 

Forest which is collinear with the range line common to Range 13 West and 

Range 14 West; 

then north and west along the Angeles National Forest boundary to the point of 

intersection with the Township line common to Township 7 North and Township 6 

North (point is at the northwest corner of Section 4 in Township 6 North and 

Range 14 West); 

then west along the Township line common to Township 7 North and Township 6 

North; 

then north along the range line common to Range 15 West and Range 16 West 

to the southeast corner of Section 13, Township 7 North and Range 16 West; 

then along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, Township 

7 North and Range 16 West; 

1
ATTACHMENT 2

then north along the range line common to Range 16 West and Range 17 West 

to the north boundary of the Angeles National Forest (collinear with the Township 

line common to Township 8 North and Township 7 North); 

then west and north along the Angeles National Forest boundary to the point of 

intersection with the south boundary of the Rancho La Liebre Land Grant; 

then west and north along this land grant boundary to the Los Angeles-Kern 

County boundary.

Riverside County (P)

That portion of Riverside County which lies to the west of a line described as 

follows: 

Beginning at the Riverside-San Diego County boundary and running north along 

the range line common to Range 4 East and Range 3 East, San Bernardino Base 

and Meridian; 

then east along the Township line common to Township 8 South and Township 7 

South; 

then north along the range line common to Range 5 East and Range 4 East; 

then west along the Township line common to Township 6 South and Township 7 

South to the southwest corner of Section 34, Township 6 South, Range 4 East; 

then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, 

Township 6 South, Range 4 East; 

then west along the Township line common to Township 5 South and Township 6 

South; 

then north along the range line common to Range 4 East and Range 3 East; 

then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, 

Township 5 South, Range 3 East; 

then north along the range line common to Range 2 East and Range 3 East; to 

the Riverside-San Bernardino County Line.

San Bernardino County (P)

That portion of San Bernardino County which lies south and west of a line 

described as follows: 

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ATTACHMENT 2

Beginning at the San Bernardino-Riverside County boundary and running north 

along the range line common to Range 3 East and Range 2 East, San 

Bernardino Base and Meridian; 

then west along the Township line common to Township 3 North and Township 2 

North to the San Bernardino-Los Angeles County boundary.

San Joaquin Valley

Fresno County

Kern County (P)

Kings County

Madera County

Merced County

San Joaquin County

Stanislaus County

Tulare County

The entirety of the counties of Fresno, Kings, Madera, Merced, San Joaquin, 

Stanislaus, and Tulare, and that portion of Kern County described below:

Kern County (P)

That portion of Kern County which lies west and north of a line described as 

follows: 

Beginning at the Kern-Los Angeles County boundary and running north and east 

along the northwest boundary of the Rancho La Liebre Land Grant to the point of 

intersection with the range line common to Range 16 West and Range 17 West, 

San Bernardino Base and Meridian; 

north along the range line to the point of intersection with the Rancho El Tejon 

Land Grant boundary; 

then southeast, northeast, and northwest along the boundary of the Rancho El 

Tejon Land Grant to the northwest corner of Section 3, Township 11 North, 

Range 17 West; 

then west 1.2 miles; 

then north to the Rancho El Tejon Land Grant boundary; 

then northwest along the Rancho El Tejon line to the southeast corner of Section

34, Township 32 South, Range 30 East, Mount Diablo Base And Meridian; 

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ATTACHMENT 2

then north to the northwest corner of Section 35, Township 31 South, Range 30

East; 

then Northeast along the boundary of the Rancho El Tejon Land Grant to the 

southwest corner of Section 18, Township 31 South, Range 31 East; 

then east to the southeast corner of Section 13, Township 31 South, Range 31 

East; 

then north along the range line common to Range 31 East and Range 32 East, 

Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township

29 South, Range 32 East; 

then east to the southwest corner of Section 31, Township 28 South, Range 32 

East; 

then north along the range line common to Range 31 East and Range 32 East to 

the northwest corner of Section 6, Township 28 South, Range 32 East, 

then west to the southeast corner of Section 36, Township 27 South, Range 31 

East, 

then north along the range line common to Range 31 East and Range 32 East to 

the Kern-Tulare County boundary.

Imperial County

Imperial County (P)

That portion of Imperial County which lies within the line described as follows: 

Beginning at the intersection of the United States-Mexico border and the 

southeast corner of Township 17 South, Range 11 East, San Bernardino Base 

and Meridan,

then north along the range line of the eastern edge of Range 11 East, 

then east along the township line of the southern edge of Township 12 South to 

the northeast corner of Township 13 South, Range 15 East, 

then south along the range line common to Range 15 East and Range 16 East, 

to the United States-Mexico border.

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