LFG design

SCS Engineers Landfill and Solid Waste Seminar – Roanoke, VA

March 13, 2020

Join SCS Engineers for our 27th Annual Virginia Landfill & Solid Waste Seminar!

This half-day seminar will provide updates on the latest regulatory, policy, and technological developments in solid waste, landfill, and landfill gas industries. The $100 registration fee includes continental breakfast, seminar materials, lunch, and certificate of completion.

Participants described the seminars as “well organized and beneficial”; with “good coverage of the issues in the industry and real-world examples,” and “thought-provoking presentations.”

To register, download the Flyer and Registration Form.


  • Welcome and Introductions by Paul Mandeville, PE
  • Liquids Management: What Are Our Options? with Darrin Dillah, Ph.D., PE & Parita Shah
  • Virginia Department of Environmental Quality (VDEQ) 2020 Regulatory Update with Kathryn Perszyk, VDEQ
  • Best Available Control (BACT) for Landfill Gas Collection Systems: What Does This Look Like in 2020? with Alex Mandeville, EIT & Bob Dick, PE, BCEE
  • Efficiency Assessments for Landfill & Other Solid Waste Facility Operations with Daniel Jansen
  • Groundwater Sampling: Do You Know What’s Being Done at Your Site? by Jennifer Robb
  • How Recycling Programs Have Adapted and Improved in Response to Difficult Market Conditions with Stacey Demers, LEED AP

The seminar is intended for solid waste management professionals, landfill managers, waste/recycling managers, supervisors, and operators. For attendees already possessing landfill experience, topics will provide a fresh perspective and cover important regulatory and technological updates. For those new to the field, topics will cover essential information on all aspects of landfill development, operations, monitoring, and management.

Full event attendance provides four (4) CPE/T contact hours toward DPOR requirements for Class I and Class II license renewal, as well as three (3) Continuing Education Units for the SWANA Certification Program.






Posted by Laura Dorn at 8:00 am

When Infrastructure Improvement Becomes the Most Efficient Alternative to Unsustainable Landfill Gas Operations and Maintenance Costs

August 4, 2016

The unique nature of landfill decomposition and the demands of safety, environmental compliance, and energy recovery create a dynamic environment under which Landfill Gas (LFG) management systems perform. These conditions place long term stresses on system components and increasingly challenge the ability of operators to effectively and efficiently manage the collection and control of LFG in a cost effective manner.

This case study concerns an aging LFG system located in northern Virginia nicknamed the I-95 Landfill. Operation and maintenance had become onerous and expensive as the system aged. Plans to evaluate, redesign, and rebuild the system with the intention to simplify operation and optimize performance while reducing lifecycle operation and maintenance costs were implemented. This paper presents the site history of the I-95 Landfill along with the approach from system evaluation findings, the design recommendations, construction, and the lessons learned.

Read the Case Study Here




Posted by Diane Samuels at 6:00 am

SCS Engineers’ David P. Hostetter PE, LEED AP, CEM, Named a Waste360 Young Professional Award Winner

May 10, 2016

Penton’s Waste360 Unveils the Next Generation of Leaders in the Waste and Recycling Space Award

Dave Hostetter, SCS Engineers
Dave Hostetter, SCS Engineers

The Waste360 “40 Under 40” awards program recognizes inspiring and innovative professionals under the age of 40 whose work in the waste, recycling, and organics industry has made a significant contribution to the industry. Dave Hostetter focuses on designing landfill gas systems and landfill gas flare systems.  Although still considered a young professional himself, he serves as a mentor to other engineers, providing guidance with hands-on design as well as professional guidance.

Dave is a LEED® Accredited Professional (LEED AP) and a Certified Energy Manager (CEM).  He brings to SCS Engineers an abundance of expertise and fresh ideas. Dave has a keen eye for troubleshooting and diagnosing control system issues. He serves SCS clients wholeheartedly and goes out of his way to provide assistance as well as the expertise needed to make their day-to-day operations run as smoothly as possible.  Dave has participated in a multitude of landfill gas and leachate system designs, including designs for blower and flare stations, wellfields, gas conveyance piping, leachate pumping systems, and groundwater extraction systems.  His vast and varying experience, honest and hard-working approach to projects, and his positive attitude make him a respected resource within the firm.

Dave lives the SCS mission, and clients trust him for his honest and comprehensive approach to their challenges. Dave takes ownership of his work and puts in the time and effort to deliver excellent results and maintain a great relationship with his clients. “Dave Hostetter sets the example of how an honorable, dynamic, and experienced engineer should act at SCS,” said Paul Mandeville, Senior Vice President and Director of SCS’s offices on the east coast. “Dave serves as a model of what young professionals and students should strive to become in their professional and personal careers; we are very proud of him.”

Please join SCS in congratulating Dave Hostetter on his recent recognition by Waste360.

Posted by Diane Samuels at 6:00 am