Our Team

Eilar Associates, Inc. is a team of highly qualified individuals with a reputation for precision, accuracy, timeliness, and accessibility. Our team provides a final product that is both thorough and concise, presented in a manner that is clear to the reader even without a background in noise and/or vibration. Our talented staff has a broad range of experience in acoustics and works together as a collaborative team to meet client needs efficiently and effectively.



 Jonathan BrothersJonathan Brothers, Principal Acoustical Consultant   

Education: B.A., Audio Arts & Acoustics, Columbia College, Chicago

Organizations: ASTM international Committee E33 (Acoustics), Member; Institute for Noise Control Engineering, Member; Acoustical Society of America, Member; County of San Diego CEQA Consultant List, Approved Noise Consultant

Jonathan participates in many projects involving construction noise evaluation and monitoring. He has particular expertise in architectural acoustics, analyzing, evaluating, and recommending mitigation for existing and proposed projects. Jonathan conducts many of the firm’s ASTM compliance NIC and ISR tests for documenting existing assembly performance ratings. Jonathan’s background in construction allows him to quickly identify noise issues in existing construction. Jonathan also provides litigation support and expert witness testimony. Jonathan serves as quality control for all acoustical proposals and reports at Eilar Associates, Inc.

Contact Jonathan


Amy J. HoolAmy L. Hool, Senior Acoustical Consultant   

Education: B.A., Audio Arts & Acoustics, Columbia College, Chicago

Organizations: Acoustical Society of America, Member; Institute for Noise Control Engineering, Member; County of San Diego CEQA Consultant List, Approved Noise Consultant

Amy is involved in many environmental noise studies and manages, analyzes, and resolves complex mechanical noise issues for both newly developed and existing projects. Her experience also includes numerous wireless telecommunications facilities and public and private school facilities for LEED, CHPS, and DSA-HPI certifications.

Contact Amy


Dan Gershun, Acoustical Consultant   

Education: Masters of Science Teaching, Astronomy, University of Wyoming, Laramie, Wyoming; B.S., Physics, University of Hartford, West Hartford, Connecticut

Organizations: Acoustical Society of America, Associate Member

Since joining Eilar Associates in 2016, Dan has been involved in a wide variety of projects, including acoustical design and noise control for mixed-use buildings, commercial buildings, transportation facilities, and performing arts facilities.  He has also participated in several projects involving traffic and construction noise evaluation, control, and monitoring. Prior to joining Eilar Associates, Dan worked as an Independent Contractor for a home theater consultant, providing technology research, drafting, and technical recommendations.

Contact Dan


Mo Ouwenga, Staff Consultant

Education: B.S., Acoustics, Minor in Programming, Columbia College, Chicago

Organizations: Acoustical Society of America, Student Member

Mo comes to Eilar with specific training in architectural, environmental, and engineered acoustics, as well as computer architecture, numerical analysis, and software development. For his senior project at Columbia, he analyzed different noise metrics and their effectiveness in measuring commuter railway noise, and developed software to calculate noise levels using different metrics.  As the newest member of the team, Mo has already worked closely with senior staff on  projects involving residential subdivisions, restaurants, and office spaces.

Contact Mo




 Maria LeechMaria Leech, President and CEO   

Maria became President and CEO in 2013 at the time of her husband Doug’s passing. As an officer of the company since 1990, she has an in-depth knowledge of the company’s mission, clients, subcontractors, and personnel. Maria holds two Master’s degrees and has been involved in contracts and budget administration for thirty years. She is dedicated to meeting the needs of our clients in a professional, accurate, cost-effective, and efficient manner. Please contact Maria to address any administrative issues including contracts, invoicing, and insurance.

Contact Maria


 Melissa Counts, Executive Assistant/Contracts Manager   

Melissa holds an AA degree in Spanish. She joined the Eilar team in 2014. Her diverse office experience, cordial manner, and ability to prioritize enhances all of our efforts. Melissa will get you to the right person when you need assistance.

Contact Melissa