The Ervin Consulting Group

ECG Environmental Key Associates


Tremaine & Associates

TREMAINE & ASSOCIATES, Inc., a certified small woman-owned business, regularly works with ECG to supply Cultural Resources Management services. They specialize in compliance needs related to CEQA, NEPA, and NHPA as well as AB52. Their staff is well versed in private development and public works projects. Typically, they conduct screened undertakings, reconnaissance surveys, evaluate cultural resources for eligibility to the California and National Register of Historic Places, monitor construction ground disturbance, deal with unanticipated discoveries, perform mitigation excavations, consult with Native Americans, and offer sensitivity training for Resident Engineers and construction crews. They have been in business for nearly 25 years and have a long track record for performing quality work and offering innovative solutions.


Saxelby Acoustics

Luke Saxelby has been practicing acoustic and noise control engineering for the past 15 years and is a Board Certified member of the Institute of Noise Control Engineering (INCE).  He is an expert in the requirements of the California Environmental Quality Act (CEQA) relating to noise impacts and has been involved in the preparation of hundreds of noise studies, including CEQA Environmental Impact Reports (EIR) and Mitigated Negative Declarations (MND).  He is also a recognized expert witness in issues relating to building acoustics and noise control and has given testimony on various legal projects including construction defect claims and CEQA litigation. Mr. Saxelby has extensive experience in the use of complex noise modeling programs including the Federal Highway Administration (FHWA) Traffic Noise Model (TNM), the CadnaA (Computer Aided Noise Abatement) sound prediction model, the Federal Aviation Administration’s (FAA) Integrated Noise Model (INM), and the Enhanced Acoustic Simulator for Engineers (EASE) model.  He has also developed many custom computer models used in his practice. Special interests and areas of practice include the application of noise control techniques for mechanical systems, building noise control design, low noise HVAC systems, and architectural acoustics.



Founded in 1990, NCE is a client-focused professional consulting firm integrating the disciplines of regulatory compliance and permitting, engineering, science, and planning to address the environmental resource and infrastructure challenges facing our communities today and in the future. With five offices and nearly 100 employees located across California and Nevada, our commitment to provide value and quality-driven services provides our clients confidence in the work we perform. NCE’s highly qualified technical staff work collaboratively with our clients to ensure successful outcomes through our knowledge and understanding of local conditions and natural resources, as well as established connections with local, state, and federal agencies. NCE’s interdisciplinary teams are often composed of regulatory specialists, planners, technical experts, and engineers, which translates into a very practical approach to environmental and engineering services. We have developed strong relationships with the regulatory entities and agencies throughout California, which facilitates the approval and compliance of our projects. Over 85 percent of NCE’s work is with local public entities. Our company understands public agencies, particularly cities and counties, their culture, how business is done, and what is required technically and politically to deliver projects.  NCE completes California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA) documents; prepares technical studies; obtains federal, state, and local permits; conducts environmental site assessments; and facilitates public scoping for development, infrastructure, utility, and transportation projects for federal, state, and local government agencies and energy and utility companies.


Brunzell Historical

Kara Brunzell is the Owner and Principal of Brunzell Historical, a historic preservation and cultural resource management consulting firm and a certified Woman Business Enterprise (WBE). Brunzell Historical specializes in the recordation, inventory, and evaluation of historic resources. Ms. Brunzell meets the Secretary of the Interior’s Professional Qualification Standards for History and Architectural History. Projects include evaluations of individual properties as well as large-scale documentation efforts. In addition to evaluations, Ms. Brunzell has produced findings of effect, historic context statements, National Register of Historic Places (NRHP) nominations, and Historic American Engineering Record (HAER) documentation. She frequently presents the results of her research to municipal government entities, planning commissions, and non-profit groups. Based in Napa, California, she has worked extensively in the Bay Area and Sacramento, and undertakes projects throughout the state.