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The Measurement Assessment and Research Section (MARS) operates one of the Mobile Source Emissions Testing Facilities within the Mobile Source Laboratory Division (MSLD), equipped with Portable Emissions Measurement Systems (PEMS) and Portable Emissions Acquisition Systems (PEAQS) to generate high-quality, legally defensible emissions data. MARS's mission is to support the development and implementation of heavy-duty on-road and off-road vehicle regulations, strengthen emissions inventories, inform enforcement actions, advance the Clean Truck Check program, and support innovative emissions research. Through surveillance testing of in-use on-road and off-road heavy-duty vehicles and equipment, MARS provides critical insights into real-world emissions performance and regulatory effectiveness. MARS also serves as a platform for evaluating and demonstrating new testing approaches, developing innovative methods for measuring in-use emissions, and expanding CARB's testing capabilities. In collaboration with CARB mobile source workgroups, MARS develops and executes comprehensive test plans, conducts emissions testing, and performs robust data analyses to inform policy and regulatory decisions. Collectively, these efforts provide a scientific foundation for reducing criteria pollutants, greenhouse gases, and toxic air contaminants from the heavy-duty sector and protecting public health and air quality.
MARS is seeking an Air Pollution Specialist to perform complex technical work related to in-use emissions characterization of heavy-duty (HD) on-road and off-road vehicles and equipment. The incumbent will perform on-road emissions measurements with portable emissions measurement systems (PEMS) and the Portable Emissions Acquisition System (PEAQS), and ensure compliance with established test procedures, data quality objectives, and safety protocols. Duties include developing and applying analytical methods for emissions data processing, validation, and interpretation; analyzing large datasets using computational tools; designing and executing test plans; operating advanced emissions measurement systems; coordinating test resources; and preparing technical reports in support of regulatory programs, research initiatives, and emissions assessments, while working independently and collaboratively within a multidisciplinary team to support CARB's mission to protect air quality.
This position offers a balanced mix of laboratory, field, and office-based work and supports CARB's mission by advancing in-use emissions measurement techniques and evaluating emerging heavy-duty vehicle technologies. The incumbent's position may require Statewide travel up to 30% of the time for fieldwork, training or for meetings.
You will find additional information about the job in the Duty Statement .
Working Conditions
This position is not currently eligible for telework. The incumbent will be required to report to the position's designated headquarters location, as indicated on their duty statement, at their own expense.
Effective July 1, 2025, the California Department of Human Resources (CalHR) implemented the Personal Leave Program 2025 (PLP 2025). PLP 2025 directs that each employee shall receive a 3 percent reduction in pay in exchange for 5 hours PLP 2025 leave credits, monthly. The salary range(s) included in the job advertisement do not reflect the 3 percent reduction in pay.

• Standard office environment (artificial lighting, controlled temperature, etc.).
• Daily use of a personal computer, office equipment, and/or telephone.
• Travel may be required.
• Requires repetitive movement of heavy objects and/or operation of heavy machinery or motorized vehicles.

Minimum Requirements You will find the Minimum Requirements in the Class Specification.

• AIR POLLUTION SPECIALIST

Additional Documents

• Job Application Package Checklist
• Duty Statement

Position Details Job Code #:
JC-530727
Position #(s):
673-930-3887-008
Working Title:
Air Pollution Specialist
Classification:
AIR POLLUTION SPECIALIST $5,918.00 - $7,059.00 A
$7,089.00 - $8,872.00 B
$9,158.00 - $11,455.00 C
New to State candidates will be hired into the minimum salary of the classification or minimum of alternate range when applicable.
# of Positions:
Multiple
Work Location:
Riverside County
Telework:
In Office
Job Type:
Permanent, Full Time
Department Information
This employer participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.; for more information about E-Verify, please go to www.dhs.gov/e-verify
CARB values diversity at all levels of the organization and is committed to fostering an environment where employees from various backgrounds, cultures, and personal experiences are welcomed and can thrive. CARB believes the diversity of our employees collectively makes up one of the world's most respected environmental organizations. CARB offers various modern interview options, including remote phone and video interviews. Join CARB and help us improve the lives of all Californians.
Department Website: http://www.arb.ca.gov
Special Requirements
Applicants must include a Statement of Qualifications (SOQ) for this recruitment. The SOQ is a narrative discussion prepared by the applicant describing how their skills, knowledge, abilities, education, training, and experience qualify them for the position. The SOQ documents each candidate's ability to present information clearly and concisely in writing. Candidates whose applications do not include the required SOQ will not be considered for this position. Resumes do not take the place of the SOQ.

• Require Name on SOQ
• Require Job Control Number on SOQ
• Maximum number of pages: 2 (Arial 12 point, single spaced, 1-inch margins)

Application Instructions
Completed applications and all required documents must be received or postmarked by the Final Filing Date in order to be considered. Dates printed on Mobile Bar Codes, such as the Quick Response (QR) Codes available at the USPS, are not considered Postmark dates for the purpose of determining timely filing of an application.
Final Filing Date: 9/16/2026
Who May Apply
Individuals who are currently in the classification, eligible for lateral transfer, eligible for reinstatement, have list or LEAP eligibility, are in the process of obtaining list eligibility, or have SROA and/or Surplus eligibility (please attach your letter, if available). SROA and Surplus candidates are given priority; therefore, individuals with other eligibility may be considered in the event no SROA or Surplus candidates apply. Individuals who are eligible for a Training and Development assignment may also be considered for this position(s). Applications will be screened and only the most qualified applicants will be selected to move forward in the selection process. Applicants must meet the Minimum Qualifications stated in the Classification Specification(s).
How To Apply
Complete Application Packages (including your Examination/Employment Application (STD 678) and applicable or required documents) must be submitted to apply for this Job Posting. Application Packages may be submitted electronically through your CalCareer Account at www.CalCareers.ca.gov. When submitting your application in hard copy, a completed copy of the Application Package listing must be included. If you choose to not apply electronically, a hard copy application package may be submitted through an alternative method listed below:
Address for Mailing Application Packages
You may submit your application and any applicable or required documents to:
State Air Resources Board
Essam Gad
Attn: Classification and Certification Unit
1001 I Street, 5th Floor
Sacramento , CA 95814
Address for Drop-Off Application Packages
You may drop off your application and any applicable or required documents at:
State Air Resources Board
Essam Gad
Classification and Certification Unit
1001 I Street, 5th Floor
Sacramento , CA 95814
The drop-off location is non-operational on weekends and holidays.
08:00 AM - 05:00 PM
Required Application Package Documents
The following items are required to be submitted with your application. Applicants who do not submit the required items timely may not be considered for this job:

• Current version of the State Examination/Employment Application STD Form 678 (when not applying electronically), or the Electronic State Employment Application through your Applicant Account at www.CalCareers.ca.gov. All Experience and Education relating to the Minimum Qualifications listed on the Classification Specification should be included to demonstrate how you meet the Minimum Qualifications for the position.
• Resume is required and must be included.
• Degree and/or School Transcripts
• Other - Cover Letter
• Statement of Qualifications -
  Please see the Special Requirements section of this job advertisement for detailed instructions for the SOQ submission.

Applicants requiring reasonable accommodations for the hiring interview process must request the necessary accommodations if scheduled for a hiring interview. The request should be made at the time of contact to schedule the interview. Questions regarding reasonable accommodations may be directed to the EEO contact listed on this job posting.
Desirable Qualifications In addition to evaluating each candidate's relative ability, as demonstrated by quality and breadth of experience, the following factors will provide the basis for competitively evaluating each candidate:
The ideal candidate will have knowledge of heavy-duty engines, vehicles, and emissions control systems, with experience conducting emissions testing in both laboratory and on-road settings using portable emissions measurement systems (PEMS) and Portable Emissions Acquisition System (PEAQS). The incumbent should be able to develop and apply analytical methods for emissions data processing, validation, and interpretation, analyze large datasets, and prepare technical reports to support regulatory programs and research initiatives. Strong project management, organizational, and problem-solving skills are required, along with the ability to work independently and collaboratively within a multidisciplinary team. Effective written and verbal communication skills for technical reporting and presentations are essential. Programming or scripting skills for database management, instrument communication, and data post-processing are desirable, as is hands-on experience installing sampling systems, operating measurement instruments, and supporting vehicle test setups. Familiarity with experimental design, test planning, troubleshooting measurement systems, and emerging emissions measurement technologies is also preferred. A bachelor's or higher degree in science or engineering is desirable.
Possesses a driver license and maintain a good driving record.
Benefits Benefit information can be found on the CalHR website and the CalPERS website.

• Free Parking

Contact Information
The Hiring Unit Contact is available to answer questions regarding the position or application process.
Department Website: http://www.arb.ca.gov
Hiring Unit Contact:
Margo Liner
(000) -
Margo.Liner@arb.ca.gov
Please direct requests for Reasonable Accommodations to the interview scheduler at the time the interview is being scheduled. You may direct any additional questions regarding Reasonable Accommodations or Equal Employment Opportunity for this position(s) to the Department's EEO Office.
EEO Contact:
Equal Employment Opportunity Office
(000) -
EEOP@arb.ca.gov
California Relay Service: 1-800-735-2929 (TTY), 1-800-735-2922 (Voice) TTY is a Telecommunications Device for the Deaf, and is reachable only from phones equipped with a TTY Device.
Experience and Education
For experience/education to qualify during the application screening process and to ensure that minimum qualifications can be determined, applicants should include all employment history on the Employment Application (STD 678), including detailed job descriptions, hours worked per week, and start/end dates (MM/DD/YYYY). Application packages without this information may experience delayed processing times, and your eligibility for this position may be impacted.
If you are using education to meet the minimum qualifications for this position, you must submit a copy of your transcript or diploma. Applicants who completed their education outside the United States (with foreign degrees/transcripts) must obtain and submit verification of the United States course/degree equivalency.
Foreign education credential evaluation services can be found at https://www.naces.org
Failure to submit all the required documentation will result in an incomplete application and disqualification from consideration for this position.
Address for Mailing or Drop-Off Application Packages
Applying electronically via CalCareers is highly recommended. If submitting hardcopy applications (mail/drop-off), please email Essam.Gad@arb.ca.gov with the JC number in the subject line to confirm submission. Your email will serve as a time stamp that a document was dropped off before the final filing date. Drop-off applications must be received, and date stamped by 5:00 PM on the final filing date.
NOTE: Applicants must not include Social Security Numbers, LEAP status information or paperwork, Equal Employment Opportunity information, exam result notices or scores, or medical or criminal history information on any document within their application package.
You may submit your application and any applicable or required documents to:
California Environmental Protection Agency/State Air Resources Board
Attn: Human Resources Branch/ Classification & Certification unit, JC-530727
1001 I Street, 5th Floor/P.O. Box 2815
Sacramento, CA 95814
Drop-off applications must be received, and date stamped by 5:00 PM on the fina