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.
The purpose of the Quaternary Geology of Calumet and Manitowoc Counties, Wisconsin report is to provide an interpretation of the distribution and history of glacial deposits and a map showing their distribution.
This report should be useful for planning and development agencies in making land-use decisions, and to the non-metallic mining industry to aid in locating potential sources of aggregate.
The stratigraphic framework presented provides a basis for future detailed groundwater studies in the area. Finally, we hope that naturalists and others interested in the geologic history of the land on which we live will enjoy reading this report.
The report is available for sharing and downloading from the Wisconsin Geological & Natural History Survey.
We hope you find it both interesting and valuable. For geological surveys and information in other states, please contact us.
SCS Engineers promotes Carlo Lebron to lead the Southeastern region operations, including all environmental consulting, landfill, landfill gas, and solid waste business. He commences his responsibilities immediately, under the title Business Unit Director, and is managing the staff and business operations of six offices in Florida and Georgia, and including projects in Puerto Rico. His primary office is located in Tampa, Florida.
Today’s landfill design professionals can help eliminate unsafe configurations and institute features that can proactively warn of and minimize hazards for operator and customer safety. Designers consider subgrade conditions, geotechnical factors and regulatory requirements when specifying how steep a landfill may be constructed.
The practical aspects of landfill operations and maintenance play a significant role in slope configurations since the landfill must provide safe access to monitoring points, environmental control features, and mowing.
Bob Gardner highlights the most important features to consider for landfill cells, including the design and construction phases of the entire landfill’s infrastructure. Bob covers a broad range of topics including:
Many states regulate the maximum design slope, and although these vary, it is up to the landfill designer to take practical, safety and regulatory considerations into account when establishing the slope configuration. Bob recommends working closely with the field staff to incorporate a design that is user-friendly, effective and safe.
Read the WasteToday article “Ensuring safety during landfill design,” by clicking here.
About the Author: Bob Gardner, PE, BCEE
…and have fun doing it! In true SCS spirit, our offices are busy helping others in their communities, so that everyone’s holiday is a little bit brighter. A special thanks to our Young Professionals who think BIG, for organizing a national food drive with a healthy competition between our offices. The offices nationwide donated several thousand pounds of food to their local food banks.
In Overland Park, Susan McCart headed up the team’s packaging party to provide 35 custom-made holiday care packages to the members of her son’s Air Force unit. Similarly, our other offices are donating to local causes and to those serving our country.
We are happy that we can help, not just at this time of the year, but year round.
Sustainable environmental programs require multi-disciplinary professionals who have highly technical engineering skills and can develop solutions in coordination with state and local entities, private businesses, and the public.
SCS Engineers announces several strategic management enhancements following its Board of Directors meeting in November. The firm promoted several individuals and hired new professionals to increase support for its landfill, waste management, and clean energy clients in states where recycling goals and the reduction of greenhouse gases are advancing at a rapid pace.
SCS Engineers is an employee-owned corporation, with a Board of Directors that sets policies, appoints officers and committees, and otherwise serves the employee-shareholders by governing the corporation. SCS Engineers includes three specialty business practices: SCS Field Services, SCS Energy, and SCS Tracer.
The Board confirmed the company’s list of officers for the year ahead, including the promotions of Pete Carrico to Senior Vice President of SCS Field Services Operations and Maintenance, and Julio Nuno to SCS Engineers’ Senior Vice President of Environmental Services, Southwest.
Promoted to Vice President were Myles Clewner (Florida), Jim Ritchie, Srividhya Viswanathan, Art Jones, and Sol Sim (California); and Tom Lock (Pennsylvania).
SCS also welcomes new Project Director, Daniel Dietch, to its Miami, Florida, office. Mr. Dietch comes to the firm with more than 20 years of academic and professional experience in solid waste management. His experience includes master planning, landfill closure plans, operations and technology reporting, rate models and cost-benefit analyses, data management, and procurement. His expertise will help support achieving state and local sustainable recycling and waste management goals. Mr. Dietch is also the Mayor of Surfside, Florida, and brings the unique big-picture perspective of a public servant.
“These colleagues are a key part of our success, and we are proud to announce their promotions,” said President and CEO Jim Walsh. “Our clients and SCS are thriving as new professionals join with our best and brightest employee-owners.”
Of interest to industries concerned with wastewater ammonia treatment or landfill leachate ammonia treatment.
SCS Engineers publishes a new SCS Technical Bulletin entitled “Treatment of Ammonia in Wastewater and Leachate – Considerations and Technologies.”
Reducing the amount of ammonia in landfill leachate and other industrial wastewaters are often necessary to meet discharge standards. Proven wastewater treatment technologies can effectively reduce ammonia concentrations, but selecting the right technology requires careful consideration. This SCS Technical Bulletin provides background on ammonia in wastewater, and reviews factors to consider in selecting a treatment technology. The Bulletin includes a review of eight of the most common and effective treatment and disposal methods for wastewater with elevated ammonia or nitrogen.
Read or share the SCS Technical Bulletin here.
Explore SCS’s Liquids Management resources here.
Landfill base grades not only make leachate collection and removal possible but also have a significant impact on the amount of landfill airspace. For landfill operators, airspace is the primary asset, because it represents the level of revenue the operator can expect. Airspace is a commodity to be maximized.
Operators expect to get the most airspace from their landfill designer and depend on the engineer to design the grades to maximize it. Placing your trust in an engineer is a noble matter, but as the operator, you check, verify, and confirm that what the designer has engineered is what is needed to provide you with the expected value. An experienced landfill designer looks for ways to provide airspace above and beyond the operator’s expectations.
SCS has been in the business of designing landfills for nearly half a century. We have significant experience in optimizing landfill designs and maximizing airspace. SCS is often retained to design a new expansion to an existing landfill. Upon starting work we analyze the entire facility holistically to see all of the potential ways to maximize airspace around and above the existing landfill. Every cubic yard of additional airspace is a big achievement for our clients and in turn for us.
SCS often evaluates permitted, yet to be developed, base grades for operators. The intent is to determine whether additional airspace can be achieved by applying a different design to the base of the landfill. SCS has turned the science of geometry into mathematical models utilized to quickly evaluate base grades. Specific parameters of the currently permitted base grades are plugged in the mathematical model along with those of the alternative and the model provides quantitative values (cubic yards) of the difference between the permitted grades and the alternative. The values are quickly returned. After modeling, the operator may decide to modify the design to gain the additional airspace based on the alternative design. Contact us to work with our landfill design experts to assist you with an evaluation.
Contact Dr. Ali Khatami with questions about the model.
SCS Engineers continues to expand and advance its team of environmental professionals in Northern California by welcoming Wendell L. Minshew, a licensed professional engineer specializing in civil engineering.
“As a highly-qualified addition to the team, Wendell will help SCS Engineers provide exceptional environmental service to our clients in Northern California,” said Ambrose McCready, Vice President with SCS Engineers. “His significant background in engineering strengthens our regional team, and helps ensure we meet and exceed client objectives.”
With more than 30 years of engineering experience, Minshew specializes in leading the design, planning, permitting and construction management of solid and hazardous waste facilities. He obtained his Bachelor of Science in civil engineering from CSU Fresno and is a licensed Professional Engineer in California, Nevada, Oregon, and Arizona.
SCS serves Northern California through our offices in the San Francisco Peninsula, Sacramento, Oakland, Modesto, Santa Rosa, and Pleasanton. See our nationwide locations.
Many schools and school districts are prioritizing a shift toward zero waste and sustainability. However, learning to manage material resources on-site in a more sustainable manner presents operational and monetary challenges. Learn the benefits and steps to plan a financially sustainable program from Tracie Bills of SCS Engineers.
Tracie creates realistic approaches which allow for flexibility while maneuvering the unique challenges that occur. She takes you step-by-step through building a successful program and refers to established efforts such as in the City of San Jose that already have established zero waste programs in their schools.
Read the article by clicking here.
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