SCL History

Systems Consulting, LLC was founded by Gretchen and Everette Adams in 1999. Both have over 20 years’ experience with corporate, local, state, and federal agencies. As an executive business manager in the aerospace industry, Everette managed cost performance and quality assurance engineers on NASA, military and government contracts, while Gretchen worked as a high tech business and marketing executive. Their primary focus was the establishment of general management consultants that provide a full range of professional services to clients: financial, administrative, consulting and human resources. With their complementary skills and expertise, Everette and Gretchen established a partnership that has steadily gained a reputation for integrity and excellence.

SCL boasts an extensive project and construction management portfolio. Key to its history is the firm’s participation as Quality Assurance Auditor for the Central Puget Sound Regional Transit Authority's (Sound Transit) Capital Projects Program Lifetime Capital Plan and its $7.6 billion regional mass transit system. Impacting rail, facility, roads, bridge, tunnel, bus, train, light rail, commuter rail, signal, and utility systems, this 5-year project provided the foundation for the firm's performance on future transportation and infrastructure projects.

In 2005, SCL partnered with its client and the King County Department of Natural Resources Solid Waste Division during an area closure of the Cedar Hills Landfill. This entry into hazardous and toxic waste management served as a significant turning point for the firm; SCL was now face-to face with new clients, different technologies, diverse professional capabilities, unknown risks and challenges. Ultimately, the challenge paid off—participation in this award-winning project launched SCL’s Waste Management and Wastewater portfolios.

In addition, SCL would provide cost validation, administrative, utility, and information systems support services for the Washington State Department of Transportation’s (WSDOT) $17 billion Regional Transportation Investment District project. The firm’s work impacted over 75 highway, road, and bridge endeavors along the I-5 corridor.

In 2009, SCL returned to Sound Transit to conduct an Independent Assessment of Operations Start-up of the Link Light Rail Initial Segment. As prime, SCL looked at the complete life cycle of an agency seeking a full funding grant agreement through to the initial segment startup.

In 2010, SCL joined the Denver Transit Partners (DTP) to participate as Quality Assurance Manager on the first public-private partnership for commuter rail in the United States - RTD's FasTracks Eagle P3, Denver, Colorado. Using the design, build, finance, operate and maintain (DBFOM) delivery method, the project will include over 36 miles of electrified commuter rail and 15 stations from the hub at Denver Union Station (DUS) to the Denver International Airport (DIA). The total capital cost of the projected 30 year project is $2.1 billion. As QA Manager, SCL facilitated the ISO 9001:2008 certification development for the project.

Today, SCL continues to deliver outstanding professional services in engineering and construction. Whether impacting transportation systems, public works or other infrastructure projects, SCL continues to expand its operations to new markets while maintaining our role as the standard in Program and Project Management, oversight and consulting services.

Systems Consulting, LLC is a registered engineering firm in the States of Washington and Colorado with headquarters in Tacoma, WA. SCL is a certified DBE, MWBE, 8a, HUB, SCS, and SBE Company operating within the generally accepted standards of professional care which entail compliance with all applicable laws regulations and codes.






"The mission at SCL is simple - ensure that projects are safe, on-time and on budget


and connecting communities that improve the quality of life while being vigilant stewards of the environment requires investment in the best talent, state-of-the-art technology and ongoing training. These remain vital to our mission and the way forward."