SCS Engineers welcomes Mark Pearson, P.E, to the firm’s environmental engineering practice. As a Project Director, he and his team will provide water and wastewater engineering and consulting to public and private entities in the region and the U.S. from SCS’s Overland Park office.
Mark brings decades of expertise in environmental engineering, with an emphasis on wastewater design for water treatment plants, wells, pumping stations, and including sewers and waterlines. His experience includes project management through facility planning, design, and construction phases; a good fit for SCS’s comprehensive solutions.
A Professional Engineer licensed in three states, he supports clients with the design, construction, and implementation of environmental treatment systems for water and wastewater plants and post-industrial use, reuse, and the disposal of liquids. Mark helps support industries and landfills facing increasing regulatory policies, higher standards required by water treatment plants, and the rising costs associated with protecting water supplies.
Mark has worked on a wide range of projects around the world and in the United States. He is a certified Envision Sustainability Professional (ENV SP) and a member of the National Council of Examiners for Engineering and Surveying (NCEES). He earned his bachelor’s degree in civil engineering from the Missouri University of Science and Technology, and his master’s degree in environmental engineering from California State University-Long Beach.
“Mark’s expertise and knowledge enhance SCS’s ability to provide sustainable process treatment design and wastewater solutions to industrial and landfill clients who are responsible for leachate and liquids management, which is a significant operational expense for them,” stated Nathan Hamm, a Vice President of SCS Engineers and Central region lead in the Liquids Management program.
SCS Staff Professional, Spencer Nichols, supports clients as a Sustainable Materials Management (SMM) Specialist. He earned his BA in Political Science/International Relations & Environmental Studies with a Minor in Public Policy at Tulane University. Spencer is passionate about sustainability; in high school, he volunteered at a non-profit organization working closely with community members to create organic farms on school campuses. These farm projects provide healthy food to local food banks while at the same time educating students about the environmental and social benefits of organic agriculture. Spencer also led a service trip to Latin America to help agrarian communities restore their environment after regional industrial agriculture had caused widespread degradation. Spencer became Chapter President of the non-profit Global Student Embassy (GSE) and led a group of students in fundraising and environmental efforts. During his year-long tenure, he worked on environmental and community-based initiatives in California and Nicaragua, culminating in a fully-funded scholarship program for Nicaraguan students to visit GSE Chapters in the United States.
In 2017, Spencer met SCS Senior Project Manager, Tracie Bills, through his network, and learned about the SMM work she performs for SCS clients. They stayed in touch and would occasionally meet to discuss opportunities and the evolving environmental field. When the role for a SMM Specialist opened up at SCS, Spencer landed the job! SCS Engineers was a perfect fit for his interests, education, and entrepreneurial spirit. Five months in, Spencer still loves the work. In particular, he says he appreciates working in the environmental industry and enjoys learning something new every day.
Spencer works for numerous clients and finds the variety of his work rewarding because the focus is on recycling and organics management challenges. He is gaining experience in waste management sustainability and zero waste practices, as well as managing records, producing project updates, and conducting recycling characterization studies. For one of his clients, Spencer is working to identify recycling markets for wood so the materials can be repurposed instead of buried in landfills.
Spencer also conducts outreach, customer assistance, and technical assistance for another client in Contra Costa County, California. He supports their environmental and regulatory initiatives by “educating their clients on materials management best practices to ensure improved outcomes and an excellent customer service experience for everyone involved.” His mission is to help reduce business waste while improving diversion of materials away from landfills.
To be responsive in his role and for his customers, he works in a fast-paced environment. This challenge helps him grow professionally every day. Spencer’s passion for helping businesses reduce waste in a practical manner helps him work toward his ultimate goal to impact his community in a positive way.
Spencer is contemplating enrolling in graduate school to earn a Sustainability MBA; he also wants to continue his work as an environmental consultant in the Non-Profit Sector in his free time. He enjoys hiking, mountain biking, and photography – all in keeping with his passion for protecting our environment for future generations.
Well done, Spencer!
Find your career at SCS Engineers – We’re always looking for those with an entrepreneurial spirit, who find working for their clients, community, and the environment a rewarding journey!
The Ignition Firebrand Awards recognize system integrators and industrial organizations that create innovative industry solutions.
SCS Engineers and partner Corso Systems jointly received a 2019 Firebrand Award yesterday at the annual Ignition Community Conference. The firms won recognition for their next-generation visualization and control system for landfills.
SCS and Corso use SCS’s Remote Monitoring and Control, or SCS RMC® to upgrade and provide a flexible, scalable platform integrated with Ignition 8 and Ignition Perspective. The next-generation options include 3D imaging from drones and virtual reality (VR). SCS uses aerial data from their drones to compose topographic mapping, 2D images, 3D renderings, GIS, thermal, near-infrared (NIR), and methane leak detection for waste facilities.
After flying the San Timoteo Landfill, uploading the imagery, and mapping the facility, they embed both the 2D images and 3D rendering into Perspective. The team can take those rendered images and apply them into a Microsoft HoloLens VR headset as well, which allows decision-makers at San Bernardino County to “walk the site” from their offices. Now, landfill executives and operators can view their sites remotely from any device, anywhere. Other benefits include:
The firms and SCS RMC® have received a tremendous amount of positive feedback. SCS RMC® is now rolling out similar solutions at more landfills, for pipelines, and other industrial applications. A video on the 2019 ICC Award website explains how the system works and what landfill owners and operators can expect.
Well done and congratulations on providing superior client service!
Silica dust exposes over two million construction workers per year and is an area of high concern for OSHA. Workers create the dust when cutting, sawing, grinding, drilling, and crushing stone, rock, concrete, brick, block, and mortar.
Although crystalline silica is a common mineral found in the earth’s crust, common construction operations and cutting or crushing stone could result in unsafe conditions for workers. Industrial grade sand used in certain foundry work and hydraulic fracturing (fracking) is also a source of exposure.
OSHA’s standard (29 CFR 1926.1153) requires employers to protect workers from overexposure to respirable crystalline silica during construction, demolition, blasting, and tunneling activities. SCS Engineers Health and Safety (H&S) practice offers services and training to protect your workers and the public from exposure, therefore reducing your business risk.
SCS helps businesses fully implement control methods as the OSHA standard dictates, and we can measure and assess workers’ exposure to silica to determine which controls work best.
The value of using an SCS Engineers team is that we are not only qualified H&S practitioners; we are in the construction business too. We understand what is necessary to protect workers and your business under many different construction operations and conditions whether they are on petrochemical, utility, transportation, or brownfield project sites.
SCS can also create a written exposure control plan to identify all relevant tasks involving potential exposure and the methods to protect workers.
Our services are comprehensive and include accredited laboratory analysis and any necessary regulatory reporting. We also offer various types of training for workers to implement your company’s exposure control plan.
For more information, visit our Industrial H&S website pages, contact us at service@scsengineers, or call 702-645-1521 or toll-free at 800-767-4727.
We’re here to help.
SCS Engineers writes blogs to offer suggestions and tips, which we hope will save you money in your short and long-term landfill operations. Here are several popular ones from our landfill series SCS Advice from the Field, along with links to articles and papers with more details.
Landfill Disposal Cell Base Slope Design – – Focuses on the loss of the airspace and lower liquid transmissivity in the geocomposite drainage layer of landfills with steeper slopes. Also, the analytical formulation presented in Dr. Khatami’s publication “Formulation for Optimizing Landfill Base Slopes and Maximizing Airspace,” provides landfill owner/operators with an analytical tool to perform a basic sensitivity analysis in a short period at a very low cost.
Landfill Leachate Collection Pipe, SDR 11 vs. SDR 17 HDPE – – Designing a leachate collection system for a landfill disposal cell involves numerous engineering analyses of different components involved in collecting and conveying leachate. One of the important engineering evaluations is the determination of structural stability of HDPE leachate collection pipes at the bottom of the landfill.
Wastewater Deep Injection Wells For Wastewater Disposal – Industries Tap a Unique Resource – – The increasingly stringent surface water discharge standards are an ongoing challenge for industries generating a wastewater stream. DIWs could be considered as a potentially viable option for long-term, cost-effective wastewater disposal, where a viable receiving geologic strata exists and when wastewater management alternatives are evaluated.
Dynamic Compaction for New Development on Old Landfills – – Dynamic compaction is a proven geotechnical construction engineering method used to improve certain landfill areas to support their redevelopment. A combustible gas barrier layer is generally required below the building footprint to collect subsurface combustible gases. The article “Pursuing Dynamic Compaction,” has more details.
Control Engineering is a publication for automation engineers who design, implement, maintain, and manage control/instrumentation systems, components, and equipment for a wide range of industries and manufacturers. The magazine’s Engineering Leaders Under 40 Program recognizes professionals under the age of 40 who are making a significant contribution as control and plant engineering professionals. Dave Hostetter of SCS Engineers is one of these recognized for his professionalism and contributions this year. Dave’s work supports multiple industries, including waste management, and he is well known for his work designing and implementing remote monitoring and control systems, called RMC.
In 2014, finding most systems inadequate and too expensive for waste management, SCS Engineers developed and launched a new technology platform called SCS eTools©. The SCS RMC© component is used to control remote equipment and alert operations to changes in conditions.
RMC systems are useful for reducing operations, maintenance, monitoring, and reporting costs; decreasing risk; and increasing the ability to understand, operate, and troubleshoot control systems and equipment. Overall, RMC systems improve the owner/operator’s quality of life and the bottom line by allowing them to get the most out of their control systems and equipment.
Dave is the SCS RMC Regional Manager for all states east of the Mississippi. His responsibilities include developing and implementing RMC technologies for use in environmental control systems. These systems, such as cloud-based SCADA, help private industry and municipalities achieve their environmental goals, protect workers, and help minimize operational costs.
Dave is a leader in applied technology for the waste industry – he listens to his clients’ concerns and goals, keeping his solutions focused on their needs. Respected by his clients, peers, and SCS co-workers, he delivers sustainable solutions that balance the clients’ need to provide services and products while protecting our environment.
Young himself, he embraces the SCS culture of dedicating himself to developing other young engineers into future leaders like himself and sharing his knowledge for the betterment of industries and the environment.
Well done!
Proposed Amendments to the Coal Ash Regulations, Public Hearing Registration Open
EPA is proposing further amendments to the regulations governing the disposal of coal combustion residuals, commonly known as coal ash.
The proposal addresses two issues remanded by the courts back to EPA for action. EPA is proposing a modification to one of the criteria used to determine if coal ash is being beneficially used or would be considered disposal. The second proposed change is to the requirements for managing piles of coal ash. Other proposed changes include revisions to enhance public access to information.
In addition to accepting written comments on this proposal, EPA is holding two public hearings – one in person in Arlington, Virginia on October 2, 2019, and a second one that will be held virtually.
To learn more about this proposal and the public hearings, learn how to comment and register to speak or observe, visit: https://www.epa.gov/coalash/coal-ash-rule#July2019proposal.
Upcoming e-Manifest Fiscal Years 2020-2021 User Fees
EPA announced the new e-Manifest user fees for fiscal years 2020-2021 (October 1, 2019-September 30, 2021). These user fees are set based on the manifest usage and processing costs for each manifest type.
EPA encourages the hazardous waste industry to adopt fully-electronic manifesting as soon as possible so that industry members can take maximum advantage of the benefits and cost savings of electronic manifesting. However, EPA acknowledges that it will take time for industries and receiving facilities to fully transition to electronic manifests. EPA supports the wide adoption of electronic manifesting by the regulated community as soon as it is feasible.
For more information and to view the new user fees, visit https://www.epa.gov/e-manifest/e-manifest-user-fees-and-payment-information#2020fees.
Comment Period Open for Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 108(b) Electric Power Industry Proposal
EPA is seeking public comment on a proposed rule not imposing financial responsibility requirements under CERCLA Section 108(b) for Electric Power Generation, Transportation, and Distribution facilities.
The comment period for the proposed changes is open for 60 days, through September 27, 2019. To learn more, view the proposal, and how to submit comments visit: https://www.epa.gov/superfund/proposed-action-financial-responsibility-requirements-under-cercla-section-108b-classes.
Incremental Sampling Methodology (ISM) at PCB Cleanup Sites
ISM has been shown to be a valid and effective method for determining the concentrations of contaminants, including PCBs, in heterogeneous soils when designed appropriately. This document has a brief description of ISM and provides EPA’s policy of reviewing and approving site-specific applications to use ISM at PCB cleanup sites: https://www.epa.gov/pcbs/incremental-sampling-methodology-ism-pcb-cleanup-sites.
New and Updated Pharmaceutical Frequent Questions Posted
EPA recently updated several frequent questions about the final rule establishing management standards for hazardous waste pharmaceuticals and amending the P075 listing for nicotine. Additionally, EPA added a section about the sewer ban, which was effective August 21, 2019.
Check out the frequent questions out here: https://www.epa.gov/hwgenerators/frequent-questions-about-management-standards-hazardous-waste-pharmaceuticals-and.
Use these EPA resources to learn more, or contact SCS at and we’ll help answer your questions.
ISWA, a worldwide organization, promotes and develops professional waste management to protect human health and the environment as well as to ensure sustainable resource management.
The International Solid Waste Association (ISWA) General Secretariat announced the reelection of James Law for a second term as a board member representing the Organization Members of ISWA. His second term begins on October 6, at the ISWA General Assembly held during the 2019 World Congress in Bilbao, Spain. He is currently the Chair of the ISWA Working Group on Landfill and the Task Force on Closing Dumpsites Initiative as well.
Mr. Law has been a member of ISWA for 11 years. He became active after attending a World Congress conference in Singapore as a presenter and a trainer at the Landfill training workshop on how to use HELP modeling. “I love to attend and network at the annual World Congress, it is such a rewarding and educational experience with the world top experts in waste management and sustainability,” said Law.
James Law, PE, BCEE, LEED AP BD+C, SC, IWM, and SCS Engineers’ National Expert for Geotechnical and Landfill Engineering, has over three decades of engineering and management experience in geotechnical engineering and subsurface soil investigation – exploration programs (including landfill slope stability, embankment and MSE Wall evaluations), solid waste management, landfill engineering, and closure design. Mr. Law’s solid waste management experience also includes landfill gas collection and utilization as alternate energy expertise.
He has a commendable public-service record and contributes widely and regularly to industry associations and non-profits holding the International Status certification as an International Waste Manager by ISWA. James Law is recognized globally for his work toward the remediation and closure of open dumps; imperative to mitigate the impact on the environment and adverse effects on public health.
Law co-authored an ISWA publication on “The Roadmap for Closing Open Dumpsites,” released at the 2016 World Congress in Novi Sad, Serbia and has been involved in ISWA’s ongoing campaign to close the world’s 50 largest dumpsites ever since. ISWA and its national member, the Solid Waste Association of North America (SWANA) work together along with other global organizations such as Climate Clean Air Coalition (CCAC) on this globally significant movement.
Law regularly speaks and publishes papers at national and international conferences, as well as serving on the Editorial Board for the ISWA WM&R publication as a reviewer and author. His recent editorial article on “ISWA’s Closing Dumpsites Initiative: Status of Progress” co-authored with Dave Ross was published in the 2019 WM&R publication, Volume 37 (6).
In August 2019, SCS Energy broke ground on construction of a 4,000-scfm landfill gas to renewable natural gas (RNG) plant in Indianapolis. Indy High Btu, LLC engaged SCS Energy to build the RNG plant under an engineer/procure/construct (EPC) agreement. Indy High Btu, LLC is jointly owned by Kinetrex Energy, Southside Landfill, and EDL Energy.
The RNG plant employs an iron redox scrubber for hydrogen sulfide removal, membranes for carbon dioxide removal and pressure swing adsorption for nitrogen removal. The plant is on schedule to achieve commercial operation in February 2020.
Kinetrex, as a major distributor of LNG, intends to convert the RNG into LNG. RNG from the plant will fuel trucks replacing nearly 8 million gallons of diesel a year. RNG is less expensive than diesel and significantly reduces the emission of methane and other greenhouse gases.
The Indy High Btu RNG plant is the third landfill gas-to-RNG plant designed by SCS to employ nitrogen removal, meeting pipeline specifications and maximizing gas recovery. Two other plants, including a 5,000-scfm project in Kentucky, which commenced operation in March 2018, and a 5,000-scfm project in Texas, which is currently under construction and scheduled to begin operations in November 2019, are both SCS Energy designs.
SCS Energy is a practice of SCS Engineers specializing in Biogas, Anaerobic Digestion, Renewable Natural Gas and Energy Systems for industrial and agricultural operations.
An SCS Advice from the Field blog.
Self-priming pumps can provide excellent performance in the design of a landfill leachate removal system. Landfill owners and operators prefer them to help control construction and maintenance costs too.
A typical system for removing leachate from landfill disposal cells is to have a collection point (sump) inside the lined area of the disposal cell at the toe of the landfill perimeter berm slope with large riser pipes extended from the top of the berm to the bottom of the sump. Removal of leachate from the sump takes place by placing specialized submersible pumps inside the large riser pipes with electric controls for ON-OFF switches inside the control panel of the pumps located at the top of the landfill perimeter berm. The pumps are equipped with wheels that roll down the riser pipe and are positioned in the horizontal portion of the riser pipe at the bottom of the sump. The discharge line from the pump extends up through the riser pipe, and after exiting the riser pipe at the top of the berm, connects to a leachate force main in the perimeter berm. Leachate in the sump flows into the riser pipe through perforations in the riser pipe and reaches the intake of the submersible pump for removal from the sump.
Maintenance of such submersible pumps is not easy; the entire pump assembly including the power cable connected to the pump, level control leads, discharge line, and the pump is taken out of the riser pipe to have access to the pump. Normally, the entire pump assembly is soiled with leachate and slime sticking to the pipes, lines, and the pump while submerged in leachate. The discharge line could be a 2-inch diameter solid HDPE pipe long enough to reach the sump bottom from the top of the perimeter berm. Depending on the depth of the landfill from the top of the perimeter berm, the discharge lines could be long; which means the technician has to handle the extraction of a long and heavy pipe connected to a heavy pump at the lower end of the pipe, out of the rise pipe. Technicians handling the maintenance of the submersible leachate pumps must be well trained about safety aspects of the activities involved in the maintenance of such pumps. The structure located at the top of the berm, where the riser pipes and leachate piping are located, should be watertight to prevent liquids generated during maintenance activities from escaping into the berm structure and entering the environment. It is a safe practice to have more than one technician attempting to remove a submersible pump for maintenance purposes.
For landfills with depth to the bottom of the disposal cell less than the water column vacuum pressure (for practical purposes less than 15 ft.), self-priming pumps may be a feasible replacement for specialized submersible pumps. Self-priming pumps are not specialized pumps, come in all sizes, are much less expensive than the submersible pumps, and can easily be installed inside the structure at the top of the perimeter berm with a 2-inch line extended to the bottom of the riser pipe for leachate removal. Maintenance of such pumps is significantly less cumbersome than submersible pumps, with one technician able to handle replacement or maintenance of the pump in a much shorter period than that of a submersible pump. The work is not necessarily a dirty job where the technician has to handle a significant amount of leachate and slime. For maintenance of the pump, the 2-inch diameter pipe inside the riser pipe for removal of leachate does not need to be extracted. The self-priming pumps are normally designed to prime easily after each maintenance session. A check valve on the intake of the pump and a check valve near the bottom of the removal pipe prevents the liquid inside the pump and the removal pipe from flowing back down to the sump when the pump goes OFF, which prevents the need for priming the pump on the next ON cycle. The leachate level control can be a bubbler system installed inside the pump control panel with the air hosing extended to the bottom of the riser pipe. The initial setting of the bubbler system allows to control ON and OFF levels of the pump.
Self-priming pumps could also be used for double lining systems equipped with a secondary sump and a primary sump. A secondary pump removes liquids from the secondary sump and a primary pump removes leachate from the primary sump. In areas where freezing conditions during the wintertime are expected, self-priming pumps can also be used as long as the pumps and exposed piping are located inside an enclosed housing to prevent frost.
The author, Ali Khatami, Ph.D., P.E., has used self-priming pumps in his designs, where applicable, for over the past 20 years and has experienced very satisfactory performance results from the pumps, even those included in very large pumping networks. Testimonials from his clients regarding ease of maintenance and lesser capital cost for construction of the system is a good track record for a sound system to be used in the future.
Liquids Management and Landfill Design
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