Meszler Engineering Services (MES) is an engineering consultancy specializing in air quality and energy-related research and analysis.  Since establishing operations in January 2003, MES has remained committed to providing clients with personal, insightful, and technically competent representation.  As we begin our 11th year of operation, we sincerely thank the diverse clientele that have allowed MES to represent their various interests, including:

  • the Arizona Department of Environmental Quality;
  • the Bipartisan Policy Center (BPC);
  • the British Columbia Ministry of Environment;
  • Buchalter Nemer;
  • Ceres;
  • Chevalier, Allen & Lichman;
  • the City of Las Vegas Nevada;
  • the County of Los Angeles California;
  • the Diesel Technology Forum;
  • the Foundation for Clean Air Progress (FCAP);
  • the International Council on Clean Transportation (ICCT);
  • the Japan International Transport Institute (JITI);
  • MACTEC Engineering and Consulting;
  • the Maryland Department of the Environment;
  • the Metropolitan Washington Council of Governments;
  • the National Academy of Sciences;
  • the National Commission on Energy Policy (NCEP);
  • the Natural Resources Defense Council (NRDC);
  • the Northeast States Center for a Clean Air Future (NESCCAF);
  • the Northeast States for Coordinated Air Use Management (NESCAUM);
  • PennFuture;
  • Raab Associates;
  • the Rhode Island Department of Environmental Management;
  • the Rhode Island Greenhouse Gas Process;
  • Securing America's Future Energy (SAFE);
  • Sedgwick, LLP;
  • Technical & Business Systems (T&B Systems); and
  • the Visibility Improvement State and Tribal Association of the Southeast.

    Our success is directly dependent on each and every client, and we hope we have provided each of you with outstanding representation.


     Overview of MES: Dan Meszler, as the principal researcher at MES, is directly responsible for the performance of all MES operations.  Through Mr. Meszler, MES offers over 30 years of experience and expertise in a wide range of energy and air quality issues, with particular emphasis on transportation sources.   Moreover, since this expertise is offered through the structure of a small personal services business, MES provides all clients with effective and responsive representation enabled by close, one-to-one, project administration and performance.

    Mr. Meszler's experience spans both the regulatory and private sectors.  From 1982 through 1993, Mr. Meszler was employed with the Maryland Department of the Environment.  At the time of his departure from state service, he was responsible for developing and implementing state policy related to all aspects of mobile source emissions control.  In 1993, Mr. Meszler joined Energy and Environmental Analysis, Inc., an engineering consultancy, where he continued work in the energy and air quality fields, investigating a variety of issues for a wide range of public and private sector clients.  At the end of 2002, Mr. Meszler left Energy and Environmental Analysis to form MES.

    While it is difficult to provide an all-encompassing and detailed listing of the specific areas of expertise that MES offers through Mr. Meszler's services, the following list represents a general overview of the types of issues and analyses he has performed in the past:

  • Emission inventory preparation and review,

  • Energy and fuel consumption impact analysis,

  • Greenhouse gas emissions analysis,

  • Emissions control technology assessment, including detailed effectiveness and cost analysis,

  • Air quality data analysis,

  • Statistical correlation and trend analysis,

  • Vehicle inspection and maintenance (I/M) program analysis (for light and heavy duty vehicles),

  • Laboratory and field test program design, administration, and data analysis,

  • Fuel quality and alternative fuel impact analysis,

  • Nonroad vehicle and engine analysis,

  • Aircraft emissions impact assessment,

  • Model development and implementation, including both fully developed models and detailed adaptation of existing models (such as MOBILE6) to facilitate the investigation of non-standard issues,

  • Transportation and fleet data analysis,

  • Software development using applications ranging from assembler language, FORTRAN, and C to today's widely recognized spreadsheet, database, and statistical analysis programs,

  • Conformity analysis and review, and

  • Regulatory support and documentation development.

    • Although MES is a personal services company, no project is too large or too diverse to implement through our approach.  MES has established working relationships with a number of other firms that are available to supplement MES expertise or labor constraints.   Through the appropriate implementation of subcontractor arrangements, MES can offer services on projects of virtually any size and complexity.  Of course, such arrangements are implemented only after detailed discussions with our clients and appropriate assurances that the effective and close personal interactions offered by MES representation can be maintained under a multi-contractor approach.

    More information about MES can be found on the other pages of this website.  A detailed listing of specific projects performed by Mr. Meszler is provided on the Projects page, and a selection of associated sample work products are available on the Sample Work Products page.  Additional information on Mr. Meszler's qualifications as well as a copy of his resume is included on the Qualifications page.  A sampling of clients to whom Mr. Meszler has previously provided support is included on the Clients page and contact information for a number of individuals familiar with his work is provided on the References page.  Individuals listed as references have graciously agreed to accept inquiries and MES extends sincere thanks for their willingness to tolerate the (hopefully minor) impositions that this acceptance may engender.  Finally, Mr. Meszler can be contacted directly via any of the mechanisms provided on the Contact MES page.

    MES would be most happy to discuss potential services at your convenience and is ready to provide solutions tailored to meet your specific needs.