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Take a look at some of our blogs and articles about the various aspects of solid waste management and management engineering—and much more!

Gas Well Field Monitoring
solid waste management

Gas Well Field Monitoring, Control and Continuous Assessment is a Necessary Step to Ensure Proper Management of Methane Gas at Landfills

Vikek’s Environment Engineers provide sustainable solutions to life-cycle solid waste management challenges throughout the world.   We are a consulting firm that delivers innovative solid waste management solutions to municipal and private sector clients across the country. We partner with municipalities, businesses, and non-governmental organizations to create customized solutions for

Landfill Tripping
solid waste management

Discover How to Set Landfill Tipping Fees to Achieve Intergenerational Fairness

Author: Thomas (Tom) Karston Ph.D, Lead Financial Analyst at Vikek How Should Landfill Tipping Fees for Today’s Customers Help Cover Costs Over Many Decades Into the Future? While modern landfill management involves many critical engineering and environmental challenges, the not-so-simple question of how much to charge customers might be even

Best Practices in Geomembrane Applications for Wastewater Lagoons
Wastewater Lagoon

Best Practices in Geomembrane Applications for Wastewater Lagoons

Optimizing Geomembrane Design and Operation Using the Action Leakage Rate Author: Gary Arndt, Vikek Environmental Engineers, LLC Geomembrane-lined lagoons present unique challenges during their design and construction as well as over the many years they are in service. This blog post aims to help wastewater lagoon operators achieve cost-effective operations

closed landfill transformation

Transformation of a Closed Landfill into a Valuable Asset is Achievable with the Right Framework

The Closed Landfill Value Realization Challenge: Despite over 30 years of effort, we have not adequately solved the closed landfill (CLF) value realization challenges. Since the late 1980s, over 5,000 solid waste landfills have closed and most of these are now subject to perpetual post-closure care, according to data published by the Solid Waste Association of North America (SWANA) and


1. Okereke, V.O., et al (1996). Providing cost-effective Solid Waste Services to an Island Community, In. Proceedings of the Solid Waste Association of America, Northwest Regional Symposium, and Vancouver BC.

2. Okereke, V.O. (2002). Simulation of Landfill Leachate and Gas: Application to Leachate Recirculation and Landfill Gas – to – Energy Projects. IN. Waste Management and the Environment, Cadiz, Spain. WIT Press.

3. Okereke, V.O. (2003). A Landfill gas, Leachate, and Leachate Recirculation Model: Assessing the Economic Feasibility of Landfill gas – to- Energy Projects, J. for Municipal Solid professionals, July/August 2003.

4. Okereke, V.O. (2003). Analysis of Organizational Structure of the Engineering Services Section, King County Solid Waste Division, a White Paper Report.

5. Okereke, V.O. (2004). Solid Waste Management in Nigeria: Challenges and Opportunities. IN. Proceedings of the 19th Annual Northwest Regional Symposium of the Solid Waste Association of America. Everett, Washington.

6. Okereke, V.O. et al (2004). Design Challenges and Approaches for the Horizontal and Vertical Expansion of the Cedar Hills Regional Landfill. IN. Proceedings of the Solid Waste Association of America Landfill Annual Symposium. Monterey, California, USA

7. Okereke, V.O. (2006). Analysis of Carbon Sequestration in the Cedar Hills Regional Landfill. IN. Proceedings of the 21st Annual Pacific Northwest Regional & Canadian Symposium of the Solid Waste Association of America. Richmond, B.C., Canada

8. Okereke, V.O., Talich, C., McEwen, M. (2006). Recovering Airspace from Municipal Solid Waste Landfills: The Cedar Hills Regional Landfill Example. IN. Proceedings of the 21st Annual Pacific Northwest Regional & Canadian Symposium of the Solid Waste Association of America. Richmond, B.C., Canada.

9. Okereke, V.O. (2008). Greenhouse Gas Emission Offsets: Energy Recovery and Carbon Sequestration at the Cedar Hills Regional Landfill. IN. Proceedings of the 2008 American Public Works Association (APWA) Conference, Washington State.

10. Okereke, V.O. (2016). Business Management Process Design: Business Process Reengineering, Solid Waste Division. Internal Consultant Report.

11. Okereke, V.O. (2016). Guidance Paper: Capital Asset Performance Measurement Framework for King County Solid Waste Division, Internal Consultant Report.

12. Okereke, V.O. (2017). A Strategic Approach for Managing Public Sector Solid Waste Utilities. Proceedings 2017 SWANA Northwest Symposium, April 2017

13. Okereke, V.O. (2021). Landfill End-Use Decision Making Framework-Application of Continual Management Processes for Closed Landfill Value Optimization, SWANA Evergreen Chapter Virtual Technical Session, Solid Waste Finance and Decision Management, January 2021

14. Financial Performance Management System, King County SWD, DNRP, WA: 2010 -2012.

15. Solid Waste Transfer and Waste Export Plan, King County SWD, DNRP, WA, WA: 2007- 2011.

16. Karston, Thomas, (2010). Measuring Up. A practical approach to performance measurement in an Enterprise Fund, adjusting for costs that senior management cannot control. MSW Management, April 2010. 

17. Karston, Thomas, (2008). Can You Afford to Recycle? An analysis of the high value of MRF activity at urban transfer stations, and the financial consequences for recycling as it affects the timing of transition from landfills to external rail exporting. MSW Management.

18. Karston, Thomas, (2007). A Practical Solid Waste Rate Development Model, Description of a set of economic and financial models developed to optimize the rate-setting process, and results, for public or private solid waste management organizations in North America, and in virtually any cultural or economic setting, MSW Management July 2007 



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