Practical environmental engineering and compliance support for operators, developers, and regulators.`
Engineering landfill gas, biogas & compliance with substance
About Holden Environmental
Holden Environmental, founded by Marcus Holden (MCIWM, CRWM), delivers practical landfill engineering, biogas and compliance solutions.
- The Chartered Institute of Waste Management
What we do
With more than 25 years’ experience, Holden Environmental provides independent, practical support across landfill engineering, landfill gas, renewable energy and environmental compliance. Our work includes landfill gas modelling and optimisation; capping, restoration and basal design; CQA; environmental and odour monitoring; permit applications, variations and surrender; infrastructure and volumetric surveying; AD and biomethane upgrading; due diligence and expert witness support. Our approach is straightforward: technically robust, commercially aware and designed to work in the real world.
25+
Years in Waste & Environmental Projects
Trusted
by UK & International Clients
Dozens of Permits, Variations & Compliance Reports Delivered
Specialist in GasSim, HELP & Biogas Feasibility
Our Services
Our Environmental Services
Landfill Gas & Energy
GasSim modelling, flare sizing, and gas network design to optimise recovery and ensure compliance.
Compliance & Monitoring
Groundwater, leachate, surface water, and odour monitoring with reports built for regulator approval.
AD & Biogas Upgrading
Independent support for AD developers, BioLNG feasibility, and CO₂ recovery solutions.
Our Services
Engineering & Closure
Capping design, basal liner design, and closure plans built for long-term environmental protection and regulatory acceptance.
- Capping and restoration design
- Basal liner system design
- Closure plans and post-closure strategy
- Long-term stability and compliance monitoring
Why Choose Us
Six Reasons For People Choosing Us
Regulatory Expertise
Submissions and reports built for compliance — accepted by regulators
Technical Depth
Advanced GasSim and HELP modelling plus landfill engineering design expertise.
Renewable Focus
Turning landfill gas and biogas into BioLNG and CO₂ recovery opportunities.
20+ Years Experience
Supporting UK and international projects across waste, gas, and energy.
Practical Solutions
No jargon, no overdesign — just workable strategies for operators and developers.
Trusted Partner
Independent consultancy with strong industry networks and proven delivery.
Practical solutions to difficult problems
Get A Solutions For Your Problem Today
Offices
Head Office
Phone: 07564 910185
