About Us

LOI Environmental & Demolition Services management team has worked together since 1987. LOI Environmental & Demolition Services field supervisors and laborers have worked in the industry for between 8 and 25 years, primarily for LOI. We provide our customers with high quality knowledge, skill and responsiveness, regardless of the size of the project. We take a straightforward, courteous approach with our customers and gain satisfaction in the fact that so many customer relationships have been ongoing for many years, providing the continuity of service that is so valuable when working with owners with multiple building issues over a period of years.

Mission Statement:

Our mission is to provide the highest quality Abatement and Demolition services while taking care of the people and the environment.

Meet our Management Team!

John Mayer  President

email linkedin
John Mayer

John and his father started Lake Oswego Insulation in 1976 installing commercial and residential insulation. In 1985 they transitioned into performing environmental services, and shortly thereafter John became President and later sole owner as LOI grew to be an industry leader in asbestos abatement. Later, he guided the company’s expansion into lead-based paint removal and mold remediation. In 2011, he expanded operations further to include demolition services.

John spends most of his free time with his daughter. He enjoys teaching her the game of golf on the weekends. His favorite thing in the world is his finger touch handshake with his daughter. His favorite iPhone app. is the Flashlight.

Ken Brien  Vice President of Environmental Services

email linkedin
Ken Brien

Ken started out as a field supervisor in abatement. In 1987 he became one of the primary estimators / project managers for the company. He also supervises the field employees as well as coordinating scheduling and day-to-day site operations. Recently Ken was made Vice-President of Environmental Services.

Ken enjoys taking walks with his new black lab puppy, Gus. On weekends he attends to yard work and his honey-do list and then takes his fiancé out for date night. On Sunday he plays 36 holes of golf. Kens favorite iPhone app. is Golf Club Atlas.

Trip Turner  Vice President of Demoltion Services

email linkedin
Trip Turner

Trip began his construction career as an asbestos abatement certified worker at LOI before moving on to work for Northwest Demolition, where he not only learned the demolition business, but also moved into project management there. He later moved on to Elder Demolition before returning to LOI to helm the new Demolition Services division.

Trip is very involved with his family and friends. On weekends Trip enjoys golf with his wife and weekend trips to Sunriver. Trip’s favorite iPhone app is ESPN.

Juanita Amacher  Chief Financial Officer

email linkedin
Juanita Amacher

As Chief Financial Officer, Juanita Amacher brings over 36 years of financial management experience, twenty-five of those years in the construction industry. In this role, Juanita directs all financial aspects of the business including accounting practices, budgeting, financial planning, interface with the financial community, financial analysis, acquisitions and ventures, and monitoring of financial performance.

Prior to joining LOI Juanita worked as a Group Claims Manager for Northwest Administrators and a Life and Disability Claims Manager for First Far West Insurance. Juanita earned her Management Certificate at Portland Community College and is a Certified Life Coach and MVA.

Juanita enjoys good food, good wine and spa days with her girlfriends. On weekends she likes to go to the beach with her fiancé and their dog. Her favorite iPhone app is My Fitness Pal.

John Kerekes  Senior Project Manager

email linkedin
John Kerekes

John started out as a project estimator back in 1986 and has become our mold remediation specialist for the company. He also manages many of our larger-scale asbestos abatement projects. His knowledge of engineering, pipe-fitting and building systems contributes a unique perspective on challenges that arise on projects.

Harlo  Vice President of Building Security

Harlo

Harlo started off in home security. Her main goal was to clean up the neighborhood and keep it safe. Harlo attended school at Petco High before realizing she was too advanced and dropped out. A few months ago her owner started working for LOI Environmental and Demolition Services and she took over the security there.

Harlo loves spending time with her roommate Blitz and her older brother Jax. Her favorite things in the world are the Dingos from Petco. On the weekend she enjoys long walks downtown with her owner. Her favorite app. is the GPS app. because she hates getting lost.