All of Colorado

Leading Provider

Of Waste Solutions

About Us

Our customer service extends from the first phone call to the technician shaking your hand after a completed job. Unparalleled customer service from top to bottom sets GDM apart from other environmental organizations that can take care of your industrial vacuum job but will leave you feeling like dirt. You shouldn’t have to choose a good job or excellent customer service, if you want both, choose GDM Environmental.

GDM is Colorado’s best for two reasons – our people and our service. We’re a local company but big on infrastructure and can take on projects of all sizes. Though we perform large jobs like entire restaurant franchises along the Front Range or sewer line inspections for whole towns, we also cater to the mom and pop restaurant owner or the homeowner with septic tank problems. We don’t consider any job too large or too little; if you have problems we have the solution.

gdm team

When you reach out to GDM, you will reach a real person and not a voicemail inbox. Your call will be answered by someone in our Colorado Springs office who wants to help you. Don’t waste your time on a call that isn’t returned or a contact form that goes unanswered – call us for service right away.

If you’re ready for the best service, the best equipment, and most importantly the quickest response time in Colorado, call GDM Environmental today.

Meet The Team


Garry Mentzer


Tom Cox

General Manager

Amalie Chango

Office Manager

Shane Ernst

Fleet Manager

Heath Kirkham


Freddie Marquez

Operations / Safety Manager