Enclosure A: California Nonattainment NSR and PSD Rules for 1997 8­hour Ozone and PM2.5 NAAQS

Table 1. Ozone Nonattainment areas – Subpart 2 areas (8 planning areas in 12 Districts)

Permitting Agency

Air Quality

Planning Area

Current

Classification

(Original Class)

Major

Source

Threshold

Major

Mod

Threshold

LAER /

Offset

Threshold

Offset

Ratio

LAER

Trigger

Offset

Trigger

Offset

Ratio

Is NOx an

Ozone

precursor? LAER

Offset

Trigger

Offset

Ratio

LAER

Rule #

Section

Antelope Valley AQMD West Mojave Desert Moderate 100 tpy 40 tpy

New MS or

MM 1.15 to 1

0.0 tpy

(Project)

(At MS)

4 tpy

(Source) 1.2 to 1 Yes Yes Yes Yes

1303

(a)

Bay Area AQMD

San Francisco Bay

Area Air Basin Marginal 100 tpy 40 tpy

New MS or

MM 1.1 to 1

1.8 tpy

(Project)

> 50 tpy

(Source) 1.15 to 1 Yes Yes Yes Yes

2‐2

‐301.1

El Dorado County APCD

Sacramento Metro(part)

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1

1.8 tpy

(Project)

15 tpy

(Source)

At least1.3 to 1 Yes Yes Yes Yes

523.3

(A)

Feather River AQMD

Sacramento Metro(part)

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1 NA NA NA NA No No No No Previou

Imperial County APCD Imperial County

Moderate

(Marginal) 100 tpy 40 tpy

New MS or

MM 1.15 to 1

45.6 tpy

(Project)

45.6 tpy

(Project) 1.2 to 1 Yes Yes Yes Yes

207

E(1)

Mojave Desert AQMD West Mojave Desert Moderate 100 tpy 40 tpy

New MS or

MM 1.15 to 1

4.6 tpy

(Project)

25 tpy

(Source) 1.3 to 1 Yes Yes Yes Yes 1303 A 

Placer County APCD

Sacramento Metro(part)

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1 NA NA NA NA No No No No Previou

Placer County APCD

Sacramento Metro(Mountain Countybasin)

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1

45.6 tpy

(Project)

45.6 tpy

(Project) 1.2 to 1 No No No No

508

(C)(1)

Sacramento Metro AQMD Sacramento Metro

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1

27.4 tpy

(Project)

45.6 tpy

(Project)

At least1.2 to 1 No No No No

Rule 202

(301)

San Joaquin Valley APCD

San Joaquin Valley Air

Basin

Serious

(Extreme) 10 tpy 0 tpy

New MS or

MM

1.5 to 1 0.37 tpy

(Project)

10 tpy

(Source) 1.5 to 1 Yes Yes Yes Yes

2201

(4.1)

South Coast AQMD Coachella Valley

Severe

(Serious) 25tpy 25 tpy

New MS or

MM 1.3 to 1

0.0 tpy

(Project)

(At MS)

4 tpy

(Source) 1.2 to 1 Yes Yes Yes Yes

1303

(a)

L A l S th S 17 N MS 1 2 t 1

0.0 tpy

(P j t) 4 t 1303 

Federal Requirements (40 CFR 51.165) District Rule Requirements Meets Fed Requirements?* 

South Coast AQMD

Los Angeles‐South

Coast Air Basin

Severe 17(Extreme) 10 tpy 0 tpy

New MS or

MM

1.2 to 1

**

(Project)

(At MS)

4 tpy

(Source) 1.2 to 1 Yes Yes Yes Yes

1303

(a)

Ventura County APCD Ventura County (part)

Moderate

(Serious) 50 tpy 25 tpy

New MS or

MM 1.2 to 1

0.0 tpy

(Project)

25 tpy

(Source) 1.3 to 1 Yes Yes Yes Yes

26.2

(A)

Yolo‐Solano AQMD

Sacramento Metro(part)

Severe

(Serious) 25 tpy 25 tpy

New MS or

MM 1.3 to 1

1.8 tpy

(Project)

15 tpy

(Source)

At least

1.3 to 1 Yes Yes Yes Yes 301.1 

Table 2. Ozone Nonattainment areas – Subpart 2 areas with Proposed Rulemakings to Correct Deficiencies

Permitting Agency

Air Quality

Planning Area

Current

Classification

(Original Class)

Major

Source

Threshold

Major

Mod

Threshold

LAER /

Offset

Threshold

Offset

Ratio

LAER

Trigger

Offset

Trigger

Offset

Ratio

Is NOx an

Ozone

precursor? LAER

Offset

Trigger

Offset

Ratio

LAER

Rule #

Section

Feather River AQMD

Sacramento Metro

(part)

Severe

(Serious) 25 tpy 25 tpy

New MS or

MM 1.3 to 1

25 tpy and

1.8 tpy

25 tpy and

10 tpy

At least1.3 to 1 Yes Yes Yes Yes

10.1

(E.1)

Placer County APCD

Sacramento Metro(part)

Severe

(Serious) 25 tpy 25 tpy

New MS or

MM 1.3 to 1 1.8 tpy 10 tpy

At least1.3 to 1 Yes Yes Yes Yes

502

(302)

Sacramento Metro AQMD Sacramento Metro

Severe

(Serious) 25 tpy 25 tpy

New MS or

MM 1.3 to 1

0.0 tpy

(Project)

(At MS) 25 tpy

At least1.3 to 1 Yes Yes Yes Yes

214

(301)

Footnotes:

* Where the District rule establishes applicability thresholds for LAER and offsets that differ from the Federal applicability thresholds, we have evaluated the rule to ensure that it is at least as stringent as the Federal 

** In EPA's 1996 SIP approval action, we approved an offset ratio of 1.2:1 pursuant to CAA Section 182(d)(2).

Federal Requirements (40 CFR 51.165) District Rule Requirements Meets Fed Requirements?* 
Table 3. Ozone Nonattainment areas – Former Subpart 1 Areas Which are SIP Approved

Permitting Agency

Air Quality

Planning Area

Current

Classification

(Original Class)

Major

Source

Threshold

Major

Mod

Threshold

LAER /

Offset

Threshold

Offset

Ratio

LAER

Trigger

Offset

Trigger

Offset

Ratio

Is NOx an

Ozone

precursor? LAER

Offset

Trigger

Offset

Ratio

LAER

Rule #

Section

Eastern Kern APCD Kern Co.

Former

Subpart 1 100 tpy 40 tpy

New MS or

MM 1.0 to 1 36.5 tpy 36.5 tpy 1.2 to 1 Yes Yes Yes Yes

210.1

(3.C & 5.B

San Diego County APCD San Diego Co.

Former

Subpart 1 100 tpy 40 tpy

New MS or

MM 1.0 to 1 45.6 tpy 45.6 1.2 to 1 Yes Yes Yes Yes

20.4

((d))

Table 4. Attainment areas – With SIP Approved PSD Rules or Proposed Rulemakings to Correct Deficiencies

NAAQS

Permitting Agency

Air Quality

Planning Area

Classified

Unclassifiable/

Attainment

NOx is an

Ozone

Precursor

Authority to

Regulate

PM2.5

Is NOx an

Ozone

precursor?

NOx

Rule #

Section

Monterey Bay AQMD Monterey Bay All Applies Applies Yes

207

(2.48)

Mendocino County AQMD North Coast Air Basin All Applies Applies Yes

130

(p7)

Northern Sonoma CountyAPCD North Coast Air Basin All Applies Applies Yes

130

(p6)

North Coast Unified AQMD North Coast Air Basin All Applies Applies No NASacramento Metro AQMD Sacramento Metro

All except Ozone

and PM10 NA Applies NA NA

Footnotes:

* Where the District rule establishes applicability thresholds for LAER and offsets that differ from the Federal applicability thresholds, we have evaluated the rule to ensure that it is at least as stringent as the Federal 

Federal Requirements (40 CFR 51.165) District Rule Requirements Meets Fed Requirements?* 

Federal Requirements (40 CFR 51.166) Meets Fed Requirements? 

Yes

PM2.5 is

Regulated

Pollutant?

YesYesYesYes

General Note Regarding Rule Citations:Rules that have been federally approved are available at the following website maintained by EPA, Region 9: www.epa.gov/region09/air/sips/index.html (via the link for "California").

Rules cited in Table 2, above, are available in docket # EPA‐R09‐OAR‐2011‐0211 at www.regulations.gov.

Rules for which EPA has published a direct final approval that is not yet effective are available in docket # EPA‐R09‐OAR‐2011‐0211 at www.regulations.gov.

(i.e., Mendocino County AQMD Rule 130 and Northern Sonoma County APCD Rule 130, cited in Table 4, above)