Org Chart - Monitoring and Laboratory Division

This page last reviewed December 18, 2014


Monitoring and Laboratory Division Mission Statement:

The Monitoring and Laboratory Division's primary responsibility is operation and maintenance of California's air quality and greenhouse gas monitoring network, including related quality assurance, chemical laboratory analysis, and emergency response programs. The Division also certifies and evaluates vapor recovery control equipment used at gasoline dispensing facilities, and develops regulations and strategies for controlling emissions from a range of gasoline-powered equipment and fueling system. In addition, the Division develops and operates state-of-the art emissions laboratory and in-field testing capabilities for trucks, buses, and off-road equipment in support of ARB's regulatory, air quality, and enforcement programs.


Monitoring and Laboratory Division Organizational Chart (PDF)




Michael Benjamin, Chief

  • Telephone: (916) 323-2915
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street,
    Sacramento, CA 95811

Evaporative Controls & Certification Branch

Manjit Ahuja, Chief

  • Telephone: (916) 327-8528
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street,
    Sacramento, CA 95811
Angus MacPherson, Testing & Certification Section
  • Telephone: (916) 445-4686
  • Mailing Address:
    California Air Resources Board
    1900 14th Street
    Sacramento, CA 95811
Jim Watson, Engineering & Regulation Development Section
  • Telephone: (916) 327-1282
  • Mailing Address:
    California Air Resources Board
    1900 14th Street
    Sacramento, CA 95811
Aimee Davis, Staff Services Manager I
  • Telephone: (916) 322-3289
  • Fax: (916) 327-8217
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811

Air Quality Surveillance Branch

Ken Stroud, Chief

  • Telephone: (916) 324-7630
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street,
    Sacramento, CA 95811
Joe Guerrero, P.E., Air Monitoring North Section
  • Telephone: (916) 324-7591
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Fernando Amador, Air Monitoring South Section
  • Telephone: (626) 575-6635
  • Mailing Address:
    California Air Resources Board
    9480 Telstar Avenue
    El Monte, CA 91731
Mac McDougall, Special Purpose Monitoring Section
  • Telephone: (916) 327-4720
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Reginald Smith, Operation and Data Support Section
  • Telephone: (916) 327-1238
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811

Northern Laboratory Branch

Michael Werst, Chief

  • Telephone: (916) 322-6202
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street,
    Sacramento, CA 95811
Russell Grace, Special Analyses Section
  • Telephone: (916) 322-2496
  • Mailing Address:
    California Air Resources Board
    1900 14th Street
    Sacramento, CA 95811
Kathleen Gill, Organic Laboratory Section
  • Telephone: (916) 445-9483
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Vacant, Inorganic Laboratory Section
  • Telephone:
  • Mailing Address:
  • California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811

Quality Management Branch

Mike Miguel, Chief

  • Telephone: (916) 322-0960
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street,
    Sacramento, CA 95811
Ranjit Bhullar, Quality Assurance Section
  • Telephone: (916) 322-0223
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Patrick Rainey, Quality Management Section
  • Telephone: (916) 327-4756
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Jeff Wright, Data Analysis and Special Projects Section
  • Telephone: (916) 322-7055
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811
Greg Vlasek, Office of Emergency Response
  • Telephone: (916) 323-4294
  • Mailing Address:
    California Air Resources Board
    1301 V Street
    Sacramento, CA 95811

Freight Emissions Testing & Research Branch

Tao Huai, Chief

  • Telephone: (916) 324-2981
  • Mailing Address:
    California Air Resources Board
    Monitoring & Laboratory Division
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811

Shaohua Hu, Measurement Assessment and Research Section

  • Telephone: (916) 445-2176
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811

Don Chernich, Freight Emissions Assessment and Testing Section

  • Telephone: (916) 322-7620
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812

Keshav Sahay, Measurement and Technology Assessment Section

  • Telephone: (626) 575-6946
  • Mailing Address:
    California Air Resources Board
    9480 Telstar Avenue
    El Monte, CA 91731

John Karim, Portable Emissions Measurement Section

  • Telephone: (626) 459-4303
  • Mailing Address:
    California Air Resources Board
    9480 Telstar Avenue
    El Monte, CA 91731

Engineering and Certification Branch

George Lew,Chief

  • Telephone: (916) 324-6300
  • Mailing Address:
    California Air Resources Board
    P.O. Box 2815
    Sacramento, CA 95812
  • Street Address:
    1927 13th Street
    Sacramento, CA 95811

Lou Dinkler, Engineering & Evaluation Section

  • Telephone: (916) 324-9487
  • Mailing Address:
    California Air Resources Board
    1900 14th Street
    Sacramento, CA 95811

Pat Bennett, Vapor Recovery & Certification Section

  • Telephone: (916) 322-8959
  • Mailing Address:
    California Air Resources Board
    1900 14th Street
    Sacramento, CA 95811

Merrin Wright, Vapor Recovery In-Use Program Section

  • Telephone: (916) 324-6191
  • Mailing Address:
    California Air Resources Board
    1927 13th Street
    Sacramento, CA 95811


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