Theodore D. Schade 

Air Pollution Control Offiatr 

GREAT BASIN UNIFIED AIR POLLUTION CONTROL DISTRICT 

157 Short Street, Bishop, California 93514-3537 

Tel: 760-872-82 1 1 Fax: 760-872-61 09 

\c \r \r . ubi~apcd orq 

May 19,2010 

Sent Via Federal Express 

Mr. James Goldstene 

Executive Officer 

California Air Resources Board 

100 1 "I" Street 

Sacramento, California 958 14 

RE: 2010 PMlO Maintenance Plan and Redesignation Request for the 

Coso Junction Planning Area 

Dear Mr. Goldstene: 

On behalf of the Governing Board of the Great Basin Unified Air Pollution Control District, I am 

transmitting to the California Air Resources Board the 201 0 PMlO Maintenance Plan and 

Redesignation Request for the Coso Junction Planning Area (2010 Maintenance Plan) adopted by the 

District's Governing Board on May 17, 2010. 

The 2010 PMlO Maintenance Plan is a revision to the 2004 State Implementation Plan for Coso 

Junction. The Governing Board's approved action includes: 1) a recommendation for CARB to 

request that the US Environmental Protection Agency redesignate the area from nonattainment for the 

National Ambient Air Quality Standard for PMlO to attainment based on monitoring data and a 

modeling analysis, and 2) adoption of a maintenance plan that includes requirements to ensure that 

the federal PMlO standard will not be violated in the future. As required to redesignate the area to 

attainment, monitoring data and a modeling analysis showed that the Coso Junction Planning Area 

complied with the federal PMlO standard (150 micrograms per cubic meter for a 24-hour average) 

during the 3-year period from January 2007 through December 2009. 

The enclosed 2010 Maintenance Plan was adopted after a duly-noticed hearing and opportunity for 

written and oral public comment. The Declaration of the District's Board Clerk certifying the facts 

showing the District's compliance with notice and public hearing requirements for the SIP adoption 

and copies of the Board resolution adopting the 201 0 Maintenance Plan and a CEQA notice of 

exemption are also included in this transmittal package. 
James Goldstene. GARB 

May 19,2010 

Page 2 of 2 

The District respecthlly recommends that the Coso Junction Planning Area be redesignated from 

nonattainment to attainment with the federal PMlO standard and that CARB review and approve the 

20 10 Maintenance Plan. We request that the approved 20 10 Maintenance Plan be transmitted to the 

US EPA with a request to redesignate the Coso Junction Planning Area to attainment with the federal 

PMlO standard. 

Sincerely, 

Theodore D. Schade 

Air Pollution Control Officer 

Enclosures (2 hardcopies, 2 CDs) 

cc: Doris Lo, USEPA (wI2 hardcopies, 2 CDs) 

Sarvy Mahdavi, USEPA (w1CD) 

Sylvia Oey, CARB (w1CD) 

Elizabeth Melgoza, CARB (w/CD) 
PROOF OF PUBLIC 'ATION 

(201 5.5 C.C.P.) 

STATE OF CALIFORNIA, I 

1 

COUNTY OF INYO 

I am a citizen of the United States .and a 

resident of the County aforesaid. I am over 

the age of eighteen years, and not a party to 

or interested in the above-entitled matter. I 

am the principal clerk of the printer of the 

The lnyo Register 

County of lnyo 

The lnyo Register has been adjudged a 

newspaper of general circulation by the Superior Court of the County of Inyo, State of 

California, under date of Oct. 5, 1953, Case 

Number 5414; that the notice, of which the 

annexed is a printed copy (set in type not 

smaller than non-pareil), has been published 

in each regular and entire issue of said 

newspaper and not in any supplement 

thereof, on the following dates, to wit: 

APRIL 1, 15 

in the year 201 0 

I certify (or declare) under penalty of perjury 

that the foregoing is true and correct. 

on this 15TH day of APRIL, 201 0 

This space is for County Clerk's Filing Stamp 

APR f 9 20\0 

Proof of Publication of 

Public Notice 

NOTICE OF PUB1 IC 

ADOPTION AND APPROVAL 

OF 2010 

PMlO MAINTENANCE PLAN 

AND 

REDESIGNATION REQUEST 

FOR THE COSO JUNCTION -" PLANNING AREA ,s 

1~ 

PLEASE TAKE NOTICE that rH 

the Governing Board of the - 

Great Basin Unified Air Pollution 

Control District (GBUAPCD) will, 

conduct a public hearing and 

consider for adoption the 2010 

PM 10 Maintenance plan and 

Redesignation Request for the 

(Coso PMlO Plan). The public 

I 

Coso Junction Planning Area - 

hearing, and the Governing 

Board's cons~deration for adoption, will occur at the District 

Governing Board's regular meeting on Monday, May 17, 2010 

at 10:OO a.m. in the Mono 

County Supervisors Chamber. ' 

Mdno County Courthouse, 2nd 

Floor. Main Street (Hlghway 

395). Bridgeport, Califo!nia 

93517. The public hearing on 

the Coso PM10 Plan is set for 

10:15 a.m. The Coso PMlO 

Plan includes 1) a request to redesignate the area from nonattainment for the National Ambient Air Quality Standard for 

PMlO (federal standard) to attainment based on monitoring 

data and a modeling analysis. 

and 2) a maintenance plan that 

contains requirements to ensure 

the federal standard will not be 

violated in the future. Other actions related to the' adoption nf 

the Coso PMlO Plan may also hn +-ban e+ 1hm maatinn hlmm- 
Theodore D. Schade 

Air Pollution Conlrol Officer 

GREAT BASIN UNIFIED AIR POLLUTION CONTROL DISTRICT 

157 Short Street, Bishop, California 93514-3537 

760-872-8211 Fax: 760-872-6109 

BIO #I 0051 7-4~ 

May 17,2010 

I HEREBY CERTIFY that at a regular meeting of the Great Basin Unified Air Pollution Control 

District Governing Board held in the Mono County Supervisors Chambers in Bridgeport, 

California on May 17, 2010 an order was duly made and entered as follows: 

AGENDA ITEM Mc: APPROVAL OFRESOLUTION 2010-01 AND THE 2010 PMIO MAINTENANCE PLAN 

AND REDESIGNATION REQUEST FOR THE COSO JUNCTION PLANNING AREA 

A motion was made by Cervantes and seconded by Arcularius approving Board Resolution 

2010-01, which 1) requests the US Environmental Protection Agency to redesignate the Coso 

Juntion Planning Area from nonattainment for the federal PMlO standard to attainment, 2) 

adopts the PMlO maintenance plan to ensure that compliance with the federal PMlO 

standard is maintained in the Coso Junction Planning Area. The Board than further directed 

the APCO to file a CEQA notice of exemption for this project. 

Ayes: Board Members - Arcularius, Hazard, Sweeney, Cervantes, Veatch, Eastman 

Noes: 0 

Abstain: 0 

Absent: Board Members - McCarroll, Hunt 

Motion carried 610 and so ordered. 

ATTEST: 

.J . ;fl,< Xe f4&.- - 

~<ri DeHaven, Clerk of the Board 
RESOLUTION OF THE GOVERNING BOARD OF THE 

GREAT BASIN UNIFIED AIR POLLUTION CONTROL DISTRICT 

ADOPTING THE 2010 PMlO MAINTENANCE PLAN AND 

REDESIGNATION REQLlEST FOR THE COSO JUNCTION 

PLANNING AREA AND MAKING FINDINGS OF FACT 

WHEREAS, on August 6, 2002, the United States Environmental 

Protection Agency (USEPA) designated the Coso Junction Planning Area as a 

nonattainment a'rea for the National Ambient Air Quality Standard for particulate 

matter of ten (1 0) microns or less in diameter (PMl 0); and 

WHEREAS, the Coso Junction Planning Area for PMlO includes Rose 

Valley, the Coso Geothermal Known Resource Area, and a portion of the China 

Lake Naval Air Weapons Station in southern lnyo County; and 

WHEREAS, the Great Basin Unified Air Pollution Control District, in 

accordance with the designation by USEPA of the Coso Junction Planning Area 

as a nonattainment area adopted the 2004 State lmplementation Plan for the 

Coso Junction Planning Area; and 

WHEREAS, since adoption of the 2004 State lmplementation Plan PMlO 

air quality has improved significantly in the Coso Junction Planning Area as a 

result of implementing dust control measures for windblown dust at Owens Lake, 

California, which is the mqjor contributing 'source of PMlO to the Coso Junction 

Planning Area; and 

WHEREAS, PMlO concentrations measured in the Coso Junction 

Planning Area demonstrated compliance with the National Ambient Air Quality 

Standard for PMlO from 2006 through 2009; and 

WHEREAS, future compliance in the Coso Junction Planning Area will be 

ensured as a result of the implementation of dust control measures at Owens 

Lake, California through requirements contained in the PMlO State 

lmplementation Plan for the Owens Valley Planning Area, approved by the 

USEPA in 1998 and as revised by the Great Basin Unified Air Pollution Control 

District and California Air Resources Board in 2003 and 2008; and 

WHEREAS, the 1990 federal Clean Air Act provides for the State of 

California, after reasonable notice and public hearings, to request that the 

USEPA redesignate the Coso Junction Planning Area to attainment with the 

National Ambient Air Quality Standard for PM10; and 

Resolution 201 0-01 

May 17,2010 

Page 1 of 3 
WHEREAS, a redesignation of the Coso Junction Planning Area to 

attainment with the National Ambient Air Quality Standard for PMlO requires a 

revision of the State Implementation Plan, which provides for the maintenance 

and enforcement of the PMlO standard in the Coso Junction Planning Area (also 

known as a maintenance plan); and 

WHEREAS, under California law, the Great Basin Unified Air Pollution 

Control District is the governmental entity charged with the responsibility of 

developing and adopting such a maintenance plan for the Coso Junction PMlO 

Planning Area, and with the timely submittal of such adopted plan to the 

California Air Resources Board; and 

WHEREAS, pursuant to the California Environmental Quality Act (CEQA), 

the 2010 PMlO Maintenance Plan and Redesignation Request for the Coso 

Junction Planning Area is exempt under s15061 (b)(3) of the CEQA Guidelines; 

and 

WHEREAS, the Great Basin Unified Air Pollution Control District has 

developed and circulated for public review, and received and considered public 

comment upon the revised 201 0 PMlO Maintenance Plan and Redesignation 

Request for the Coso Junction Planning Area; and 

WHEREAS, the 2010 PMlO Maintenance Plan and Redesignation 

Request for the Coso Junction Planning Area is now before this Governing Board 

for consideration of final adoption. 

NOW, THEREFORE, BE IT RESOLVED that following review by this 

Governing Board of the revised 2010 PMlO Maintenance Plan and 

Redesignation Request for the Coso Junction Planning Area, after consideration 

of written and oral public comments received on the proposed 2010 PMlO 

Maintenance Plan and Redesignation Request, this Governing Board hereby 

finds as follows: 

1. The major source contributing to the PMlO nonattainment 

problem in the Coso Junction Planning Area is windblown 

dust from the Owens Lake bed; 

2. PMl 0 monitoring demonstrated that the Coso Junction 

Planning Area has attained the National Ambient Air Quality 

Standard for PMlO as a result of control measures 

implemented at Owens Lake. 

Resolution 2010-01 

May 17.2010 

Page 2 of 3 
3. The 1998 Owens Valley State lmplementation Plan and 

revisions in 2003 and 2008 will ensure that compliance with 

National Ambient Air Quality Standard for PM10 is 

maintained in the Coso Junction Planning Area; 

BE IT FLIRTHER RESOLVED, that in consideration of each of the 

foregoing findings, statements and legal requirements, this Governing Board 

hereby approves and adopts the proposed 201 0 PMlO Maintenance Plan for the 

Coso Junction Planning Area; and 

BE IT FURTHER RESOLVED, that the adopted State lmplementation 

Plan for the Coso Junction Planning Area be forwarded for appropriate review to 

the California Air Resources Board with a request to redesignate the Coso 

Junction Planning Area to attainment with the National Ambient Air Quality 

Standard for PM10. 

APPROVED AND ADOPTED by the Governing Board of the Great Basin Unified 

Air Pollution Control District this 17th day of May, 201 0, by the following vote: 

AYES: Board members - Sweeney, Arcularius, Veatch, Cervantes, Eastman, Hazard 

NOES: O 

ABSTAIN: 0 

ABSENT: Board members - McCarroldunt f 

Mk 

Tom Sweeney, Boa 

ATTEST: 

.A 

2?4.L LL,c&H,- 

Tori DeHaven, Clerk of the Board 

Resolution 2010-01 

May 17.2010 

Page 3 of 3 
157 Short Street, Bishop, California 93514-3537 

Tel: 760-872-821 1 Fax: 760-872-6109 

TO: County Clerk 

County of lnyo 

NOTICE OF EXEMPTION 

FROM: Great Basin Unified Air Pollution Control District 

157 Short Street 

Bishop, California 93514 

Project Title: 2010 PMlO Maintenance Plan and Redesignation Request for the Coso Junction 

Planning Area 

Project Location - Specific: Coso Junction area in Eastern California, southern portion of lnyo County 

Project Location - County: lnyo County (See Figure 1) 

Description of Project: The 2010 PMlO Maintenance Plan and Redesignation Request for the Coso Junction 

Planning Area is a revision to the 2004 State Implementation Plan (SIP) for Coso Junction. The proposed action 

includes: 1) a request to the US Environmental Protection Agency to redesignate the area from nonattainment for 

the National Ambient Air Quality Standard for PMlO (federal standard) to attainment based on monitoring data and 

a modeling analysis, and 2) a maintenance plan that includes requirements to ensure that the federal PMlO 

(particulate matter less than 10 microns in nominal diameter) standard will not be violated in the future. As 

required to redesignate the area to attainment, monitoring data and a modeling analysis showed that the Coso 

Junction Planning Area (CJPA) complied with the federal PMlO standard (150 micrograms per cubic meter for a 24- 

hour average) during the 3-year period from January 2007 through December 2009. The boundaries of the CJPA 

are shown in Figure 1. No new regulations are proposed with the approval of the maintenance plan or the 

recommended action for the US Environmental Protection Agency to redesignate the CJPA from nonattainment to 

attainment with the federal standard. 'The District will rely on existing District rules for PMlO and requirements in 

the 2008 Owens Valley PMlO SIP to ensure that the federal PMlO standard is maintained in the CJPA. 

Agency Approving and Carrying Out the Project: Great Basin Unified Air Pollution Control District 

Reason Why the Project is Exempt: The project will not result in a direct or reasonably foreseeable indirect physical 

change in the environment. CEQA Guidelines §15060(c)(2); 15061(b)(3). 

Lead Agency Contact Person: Duane Ono, Deputy Air Pollution Control Officer, Telephone: (760) 872-821 1 

Signature: - 

Title: Theodore D. &ha&, Air Pollution Control Officer 

Date Received for filing: 
Figure 1. The Coso Junction Planning Area is located in southern lnyo County, California. Windblown dust from the 

exposed lake bed at Owens Lake is the primary source of PMlO that caused federal air quality violations in the CJPA. 

Dust control measures implemented at Owens Lake from 2002 through 2006 resulted in significant reductions in PMIO in 

the CJPA. Compliance with the federal PM10 standard was measured at Coso Junction during the 3-year period from 

January 2007 through December 2009. 

Owerr, Lake Dust Control Areas 

:\ li .