Welcome to the home of HSA Golden, where help with your toughest environmental problems is just a few clicks away.

We offer an extensive range of environmental engineering and waste management consulting services worldwide. We are experts in the permitting and engineering of landfills, transfer stations, and recycling facilities. We assess and remediate soil and groundwater contamination using cutting-edge, state-of-the-art tools. We perform environmental due diligence and compliance work, including Phase I and Phase II Environmental Site Assessments (ESAs). We also provide expert witness services in support of environmental litigation.

We are the one-stop solution you’ve been looking for to assist with all of your environmental consulting needs, and we’ve been around long enough to know exactly how to help.  Give us a call… if we’re open, and sometimes even if we’re not, we will answer.


Landfill & Solid Waste

We work with landfills, recycling facilities, and transfer stations…

Waste Transfer and Recycling

As experts in solid waste engineering, let us help you design your next project.


Waste to Energy

We offer a full range of waste to energy engineering consulting services.


Leverage our strong knowledge of the mining industry’s needs, including…

Contamination & Remediation

Our team of engineers, geologists, and earth scientists has the experience…

Site Development Engineering

HSA Golden provides comprehensive civil engineering services for site…

Water Supply & Hydrology

Depend on HSA Golden’s hydrogeologic expertise to help you…

Litigation Support

HSA Golden has highly experienced experts to assist your legal team…


We provide direct, personalized service to all of our clients, and we devote the same careful attention to all of our projects, regardless of their size, complexity, or location. If you’ve been looking for an environmental engineering and consulting firm that’s fanatical about details, relentless in looking after your best interests, keeps you in the loop, and is always mindful of the big picture, look no further… your life just got a whole lot easier.

Some of our clients…


Since 1989, HSA Golden has provided environmental engineering and consulting services to clients all over the world. Our practice areas include solid and hazardous waste management, waste-to-energy, site development engineering, environmental due diligence, and litigation support, among others. From governmental agencies and multinational, publicly traded corporations to smaller, single-office real estate and legal firms, we are proud of not only the relationships we’ve built, but also of the trust that our clients continue to place in us.