More than 500,000 people call Volusia County home. Situated on the east coast of Central Florida, the county has 47 miles of Atlantic Ocean beaches and beachfront cities including Daytona Beach, Ormond Beach and New Smyrna Beach. Volusia County has an abundance of natural beauty and some of the most beautiful parks in the United States.
Green Volusia is the county’s long-term initiative designed to provide residents and visitors with information about green, or sustainable, practices to reduce the impact on the environment. Green Volusia provides information about environmentally responsible practices that benefit the whole community as well as encouraging stewardship and conservation of our natural resources.
Despite the best green practices, it came time to expand the county’s landfill. The City Council approved a contract for Professional Construction Quality Assurance (CQA) and Engineering Services with SCS Engineers. SCS is an award-winning environmental consulting, engineering and construction company known for sustainable environmental solutions. The Council selected SCS for their in house expertise in MSW cell construction, and successful record of delivering the highest quality environmental engineering services.
Before the Court: EPA admits that it has failed to meet its nondiscretionary obligations to implement the Landfill Emissions Guidelines, as compelled by the CAA. The only questions before the Court were whether the Plaintiffs have standing and, if so, how long to give EPA to comply with its overdue nondiscretionary duties under the Landfill Emissions Guidelines. The Plaintiffs are the States of Illinois, Maryland, New Mexico, Oregon, Rhode Island, California, Vermont, and the Commonwealth of Pennsylvania.
Ruling: Plaintiffs have standing, and the EPA must approve existing submitted plans by September 6 and issue the federal plan by November 6.
Impact on Landfill Owners/Operators: This will create some confusion, as landfills will be working on getting revised rules in place while at the same time start complying with the old EG rule. We are already doing that with XXX sites, but this ruling adds complexity. If EPA keeps to the schedule and we have final approved revised rules by March 2020, landfills won’t have to do as much under the old rules before new ones take effect.
Contact your SCS Project Manager for more information, email us at , or follow SCS on your preferred social media.
Stormwater management at landfills is changing as owners/operators are adapting their operating plans and designs to minimize the risks that come with heavier rainfall, and severe storm conditions. Landfill engineers are “overdesigning,” in regions hard hit in recent years by severe weather, and not designing for what is labeled as a statistically probable 25-year-storm.
Operations and maintenance are also preparing for changing conditions. William Mojica, Republic Services Director of Environmental Compliance is quoted in this article saying “It’s understanding the facility’s lifecycle, what best management practices (BMPs) are required and anticipating what may come.”
Jonathan Meronek, of SCS Engineers, notes similar strategies are being explored or employed along the U.S. coastlines including designing retention facilities to handle much larger storms.
At EUEC 2019 learn how SCS can minimize leachate and contact water management at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices.
Through this SCS presentation of case studies, you will learn how to assess leachate and contact water management issues and implement techniques to minimize leachate and contact water management at your landfill.
Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. Our presentation will provide you with useful tools to ensure your landfill is designed and operated to effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.
2019 EUEC in San Diego, February 25-17, 2019. Conference details here.
Learn how to minimize leachate and contact water management at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices.
Through this SCS presentation of case studies, you will learn how to assess leachate and contact water management issues and implement techniques to minimize leachate and contact water management at your landfill.
Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. Our presentation will provide you with useful tools to ensure your landfill is designed and operated to effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.
2019 EUEC in San Diego, February 25-17, 2019. Conference details here.
Learn how to minimize leachate and contact water management costs at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices. Through the SCS use of case studies, you will learn how to assess leachate and contact water management issues and implement cost-saving techniques at your landfill.
Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. The SCS presentation at USWAG will provide you with useful tools to ensure your landfill is designed and operated to cost-effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.
SCS Engineers – Serving Utilities Nationwide
Landfills are getting larger in height and greater in footprint area, but the location of leachate tanks, leachate ponds, or discharge points to an on-site or off-site leachate treatment plant usually don’t change.
A larger footprint means leachate force mains are getting longer and pumps have to work harder to push leachate through the system to a target point. Some operators carry on with the same pumps for decades and don’t monitor the performance of the pumps after expanding the landfill footprint.
SCS highly recommends that you evaluate the performance of the existing pumps again. Such an evaluation may require hydraulic analysis of the entire network of pipes along with pumps, or whatever segment of the network that is affected by the expansion. The effort is minimal in retrospect, but the operator makes sure that the system will function in an optimized zone with minimal wear on the pumps.
Sometimes the hydraulic evaluation may require up-sizing all or certain pumps in leachate sumps because not enough flow can go through the force main due to high friction loss in the expanded leachate force main. Up-sizing pumps may be achievable depending on the type of the leachate sump, i.e., riser system or vertical manholes. If the up-sized pump in a riser system is too long to fit inside a riser system or too long to the point of making routine maintenance too cumbersome, your engineer needs to come up with another idea.
Booster pumps along an expanded leachate force main can certainly be an option. Booster pumps can be the inline or offline type. Install the inline pumps on the actual force main, and position the offline type on the side so that liquids go through bends and elbows to reach the pump, and again through bends and elbows to get back in the force main. In either case, the booster pump adds hydraulic energy to the flow inside the force main to push the liquids at a higher pressure and velocity through the remainder of the force main and to the target point.
Operators need to be aware of the dynamic nature of the leachate piping network and the role of booster pumps in dynamic environments. After landfill expansion, with new cells coming online -increasing leachate generation, and when closing landfill slopes -decreasing leachate generation over time, the flow in the force main may change. Sometimes booster pumps have to be up-sized or down-sized depending on flow and pressure in the system.
Have a Leachate System question? Contact the author Ali Khatami.
A look at the confusion stemming from regulatory uncertainty of new rules limiting air emissions from municipal solid waste landfills by David Greene, P.E., SCS Engineers – Asheville, NC.
The landfill industry continues to work with EPA Administration to get a longer-term stay to work out needed NSPS/EG rule changes. At this time, industry representatives are hopeful both these related goals can be achieved.
While the new NSPS/EG rules became effective back in 2016, the concerns with the rules raised at the time still remain unresolved. Despite this, we can expect resolution though it may take some time to fix. The fog should be lifting, yielding changes that are expected to be more workable for both the landfill industry and state/local regulators. In the meantime, stay tuned and stay informed.
Read the full article with links to the NSPS/EG update in a recently published SCS Technical Bulletin.
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.
