Meet SCS Engineers professionals at BOOTH 403 at the Air & Waste Management Association’s (A&WMA) 116th Annual Conference & Exhibition (ACE 2023), June 5-8, 2023, at the Hyatt Regency in Orlando, Florida.
“Smart Growth: Balancing Development, Restoration, and Resiliency” is this year’s theme. Florida’s abundant coastline, diverse ecosystem, and perennial vacation destination faces unique challenges with respect to impacts from weather, sea-level rise, and other pressures brought on by a growing population. Florida is committed to meeting this challenge through many diverse minds working to plan and adapt to change—in short, to grow smarter and build a more resilient world. The Air & Waste Management Association (A&WMA) will welcome the world’s leading environmental experts, thinkers, and practitioners to Orlando to address environmental challenges, discuss strategies and solutions to climate change, sustainability, new contaminants, and other issues that call for balancing growth with sustainability and resiliency.
Several professionals from SCS Engineers are presenting at the conference, including:
ACE 2023 will unite professionals from major industry, private sector, consulting, government and academia for an exciting event that will explore the ever-expanding environmental challenges and provide solutions to becoming and remaining resilient for tomorrow. This is an ideal opportunity for professionals to share their knowledge to advance the industry, and for environmental companies to showcase their products, services, and solutions with professionals motivated to build a more resilient and sustainable world.
Visit https://www.awma.org/ace2023 for registration information and conference details.
SWANA is offering educational sessions as a webinar series with CEUs available from August through November. Register for just a few or pay one flat fee to participate in as many as you would like.
This week’s Webinar is on Thursday, October 1 at 10:00 am ET, 1 CEU.
State-of-the industry practices pertaining to the design, construction, operations, monitoring, and data analytics of LFG collection and control systems, as well as investigation of the quantity (mass flux) of fugitive (uncollected) LFG emissions.
This 1 hour SWANA Training includes topics on Landfill Gas Emissions. Register through the VRA/SWANA Webinar Series. If you’d like to learn more about the services and technologies discussed during this session, try one of these links:
With the number of LFG monitoring technologies out there, it can be difficult for operators to distinguish which is the best fit. The authors, Pat Sullivan and John Henkelman of Understanding Landfill Gas Monitoring Techniques, do just that, help readers find the approach that works best for their landfill monitoring needs.
Methane can be monitored above the surface of the landfill as a gauge of potential emissions or can be directly measured using techniques that test for the rate or flux of emissions. The above-surface monitoring techniques for gauging potential emissions include surface emission monitoring, ground-based or low-altitude imaging and satellite and aerial imaging.
Landfill methane measurement is the direct measurement of methane emissions from landfills. Direct measurement of methane is more expensive than surface emission monitoring. Four ways to measure landfill methane directly are flux chamber testing, plume measurement, micrometeorological methods, and dispersion modeling.
This paper, presented at A&WMA’s 111th Annual Conference details the Tier 4 process and the potential issues that have arisen from conducting a Tier 4. This paper also assesses potential Tier 4 sites, exceedance reporting, wind monitoring, additional SEM equipment requirements, penetration monitoring, notification and reporting requirements, and impacts on solid waste landfills that will use the Tier 4 SEM procedure for delaying GCCS requirements. This paper reviews the changes between the draft NSPS and the final version of the new NSPS that was promulgated.
Click to read or share the paper, and learn about the authors.
The 2018 Solid Waste Association of North America, Old Dominion Chapter award recognizes significant accomplishments in the solid waste industry.
The Region 2000 Services Authority (Authority), was awarded a SWANA program achievement award on May 9, 2018, for landfill operations at the Region 2000 Regional Landfill – Livestock Road Facility, in Campbell County, Virginia. Clarke W. Gibson, P.E., Director; Larry Hall, Operations Manager; and Robert Arthur, Environmental Compliance and Safety Manager head the Authority’s operations team.
SCS Engineers nominated the team for their achievements through the Authority’s Odor Management Program, which reflects the success of the Authority’s technical strategies as well as their collaboration with the Virginia Department of Environmental Quality (VDEQ) and proactive community outreach efforts.
Livestock Road became a regional landfill in 2012 when the Concord Turnpike Regional Landfill closed. Livestock Road began serving the citizens of the City of Lynchburg and the counties of Appomattox, Campbell, and Nelson with approximately 165,000 citizens living in these communities. More solid waste means more cell development, and more odors to control.
Odor management is a foremost challenge at any landfill, but particularly challenging as Livestock Road was receiving a significant increase in solid waste just as the surrounding area was developing a subdivision adjacent to the landfill. The Authority took action, and today has documented a 98 percent decrease in odor complaints as of March 2018. The results enhance the quality of life of the citizens residing in adjacent communities.
“Effective landfill odor control takes a multi-pronged and diligent approach, we wanted to implement the best management practices and the best technology to address landfill odors. As a result, we believe we have significantly improved the odor problem at our landfill and have greatly improved the quality of life for our neighbors,” stated Clarke Gibson, Director at Region 2000 Services Authority.
The comprehensive Odor Management Program was developed and implemented with the support of SCS Engineers, and is comprised of odor abatement, mitigation, and controls. Numerous elements including systems, investigations, monitoring/analyses, protocols, and practices are part of these three major elements commissioned on a voluntary basis.
“The Authority’s operations team demonstrates excellence in environmental stewardship and community relations through their program,” stated Robert Dick, Vice President, and the SCS Project Director.
CQA is essential for ensuring the proper construction of GCCS and meeting the intent of the design, and can help prevent safety mishaps. Even highly experienced design-build teams invest in expert CQA professionals to protect their capital investment, maintain maximum LFG capture through constructed GCCS, and keep operating and maintenance costs in line. It is critical for CQA person-nel to understand the overall intent of the design drawings, current field conditions, long-term conditions, and strict safety protocols. They must also have the expertise to respond to the questions contractors have during construction, especially regarding modifications to the design which will positively impact safety, long-term performance, and maintenance.
Part 1 of the 3-part article series in MSW Magazine discussed essential elements of the piping system in a landfill gas collection and control system (GCCS). The authors examine landfill GCCS design perspective and the benefits of designing landfill gas (LFG) headers outside of the waste boundary. In Part 2, we focus on construction quality assurance (CQA) services and outline the process of taking the design drawings through completion of the CQA report.
Read Part 2 here. Contains link to Part 1.
SCS Engineers periodically prepares Technical Bulletins to highlight items of interest to our clients and friends who have signed up to receive them. Our most recent SCS Bulletin summarizes the new rules which took effect on October 28, 2016, with compliance obligations under the NSPS Subpart XXX rule beginning November 28, 2016. Originally, states and local air jurisdictions were to submit their proposed EG rules by May 30, 2017; however, there have been some delays in this process, which we condense and detail in this Bulletin. SCS will continually update coverage of this Rule on our website.
We continue SCS’s Advice from the Field blog series with guidance from an article in MSW Magazine by Daniel R. Cooper, Jason Timmons, and Stephanie Liptak.
The authors of a recent article in MSW Management Magazine present engineering ideas that provide for more efficient construction of a GCCS. Gas system operators will benefit by having fewer pumps to operate and maintain and shallower headers that are more easily accessible. Odor management will be easier along with other benefits.
Read the full article here to learn about the design elements for maximizing long-term benefits, impacting: bottom liners, location of the blower/flare station, leachate risers, extraction well targets, and external header piping.
Most often, landfill gas system design is added to an existing landfill cell, but the co-authors of this article explain the benefits of considering the LFG system during the landfill bottom liner design process. Doing so during the early stages of the landfill’s life, make it possible to improve collection efficiencies, lower operating costs, and save time in the future.
Continue to the full article, Planning Ahead for the Bottom Liners, published in MSW Magazine’s November 2017 issue and learn about the co-authors from Sarasota County, Florida Public Utilities and SCS Engineers.
The past few decades of advancements in developing new drainage media have led to the use of geocomposites as the primary drainage layer above the bottom lining system geomembrane. However, you need to be watchful for the free flow of leachate through the thin layer of geocomposite under high gas pressures near the bottom lining system.
Short of investigations and clear guidelines for addressing high gas pressure near the bottom lining system, you can use a gas pressure relief system near the bottom in future new disposal cells. The pressure relief system can simply include a few perforated high-density polyethylene pipes laid in parallel directly above the soil layer placed above the bottom lining system drainage layer, as shown in the schematic.
About the author: Dr. Ali Khatami