Tag Archives: scs

Environmental Liability and Good Faith

November 13, 2019

Enviro-Check, a new program at the Wisconsin Department of Natural Resources (WDNR), limits environmental liability for organizations that are making a good-faith effort to investigate and correct violations. Enviro-Check empowers businesses and facilities to verify proactively that they are meeting environmental requirements with a third-party assessment. Many states have similar programs; for our blog, we use Enviro-Check as an example.

There are four steps to participate in the Enviro-Check program:
Step 1 – Notify WDNR 30 days before an audit
Step 2 – Conduct Audit within 365 days of application submittal
Step 3 – Submit Report within 45 days of completing the audit
Step 4 – Take Corrective Action within 90 days of a report

Enviro-Check and guidance in other states are beneficial anytime but are especially useful when there are changes at a facility, such as staff or management turnover, replacing equipment or expanding the operations, buying or selling a business, or when new federal or state rules or regulations are announced.

Benefits to your business can include:

  • Limited liability with low or no fines for self-reported and corrected violations
  • Ceilings on the maximum cost per violation
  • Department has more flexibility to waive penalties if violations are corrected
  • Reduced risks, costs, and environmental impacts
  • Increased efficiencies and improved environmental performance
  • Increased confidence for lenders, buyers, customers, shareholders, or certification bodies

SCS Engineers’ environmental compliance teams have experience in air, stormwater, wastewater, solid waste, hazardous waste, spill prevention programs, and emergency response plans. Our auditors and engineers participate in a range of auditing scenarios from single program gap analyses to full environmental compliance audits. Our staff of environmental professionals can help you:

  • File the Notice of Intent Form
  • Conduct the audit
  • Recommend and implement corrective actions
  • Provide tools and procedures to help you stay in compliance
  • File the final audit report

To learn more about how you can have SCS as your third party assessor for WDNR’s Enviro-Check or a program in your state, contact service@scsengineers.com

SCS Engineers Locations





Posted by Diane Samuels at 11:06 am
Tag Archives: scs

Thank You For Your Service and Dedication

November 8, 2019


Happy Veteran’s Day to all of our Veterans here at SCS and across our nation. 

Army National Guard Platoon Leader Wesley Pate deployed to Afghanistan and Kuwait.

On Veterans Day 2019, we decided to interview one of our very own Veterans at SCS! Wesley Pate joined SCS Engineers in August 2018, as a Senior Technician in our Field Services OM&M Business Unit. Wesley graduated from Auburn University where he studied Agriculture and Soils, which is what sparked his interested in getting into environmental services. He joined the Army National Guard in 2013, as a Platoon Leader where he was deployed to Afghanistan and Kuwait. As a Platoon Leader, he was responsible for the rating and professional development of 38 soldiers.  He returned home safely in July 2018, and started his search for a career in Environmental services and found his home at SCS Engineers! As a Senior Technician, he supports our Landfill Gas Collection Systems by conducting monthly well field monitoring on 5 of our landfills in Alabama where he performs maintenance and repairs on the blower and skid as well as troubleshooting the systems.

What is it that attracted you to SCS?

The position was close to what I did before I was deployed. Just the comfort of coming in and already knowing people working here was great. I was familiar with SCS from my prior experience with my previous employer, and it just seemed like a better environment. I liked the way things run at SCS – they did things the way I wanted to do them. Before, if I had a problem, I would have to call someone else to fix it instead of doing it myself. Now I have the freedom to do the monitoring, the troubleshooting, and the repairs all myself as needed. And if I need help, they have the resources to assist. I appreciate the structure in landfill gas with SCS because it’s very professional. And I like that!

What is your favorite part of working at SCS?

The flexibility! Every day it seems like I’m learning something new! When I work with guys from another region, I always learn something from them. I’m constantly learning something new! It never gets boring. There’s always something new coming up, always a new challenge. It tests my brain to figure things out. It’s very rewarding once you do fix something, and it works out. It’s a feeling like “Hey! This actually works, and we found the issue to fix it.” If the clients are happy, then I’m happy with myself.

What would you say is your biggest contribution to SCS?

Wesley, a Senior Technician at SCS out in the field with his team.

That’s a tough one! I guess anytime I feel I’m helping the team. If someone needs help, and I’m able to assist them, and I’m contributing to the team rather than being a burden or a headache. If my project manager needs something and I’m able to help him out and take a load off of him, that makes me feel better about my place on the team. If the boss is happy, then everyone’s happy!

Why do you think you’ve been so successful at SCS?

I’ve been set up for success! We have good management and work with great clients. I like that SCS is more of a team environment, and everyone makes an effort, rather than any one company or contractor carrying the weight of the work. Everyone approaches it as a team, and we brainstorm and determine the best way to come up with the solution. 

What advice would you give a prospective employee at SCS?

For someone coming into OM&M, stay open-minded, as in, don’t be set in your ways. Be willing to work hard and keep your head down and push through it. The work will get easier as you go on. You will learn every day, and the more you learn, the easier it gets! You will get to spend time with the more experienced SCS employees and learn from them that tasks you thought were challenging, don’t have to be. You will observe an employee who has to do the same thing 100 times, and they will teach you the easiest way to do it! 

What do you like to do outside of SCS? Any favorite hobbies?

I love to go bow hunting for whitetail deer in Alabama. I also love doing anything on the water! I have a Bloodhound dog named Reggie, and I love spending time with him.


Thank you for your service!





Posted by Diane Samuels at 2:23 pm
Tag Archives: scs

Chrome Plating Facilities to Meet PFAS Mandates in California

November 1, 2019

This week, 271 chrome plating facilities in California received an order from the California State Water Resources Control Board (SWRCB) mandating the investigation of Per- and poly-fluoroalkyl substances (PFAS) at their facilities. Up until 2016, fume suppressants used by these facilities often contained perfluorooctanesulfonate (PFOS), a variety of PFAS.

PFAS consists of thousands of entirely man-made chemicals characterized by a strong bond between fluorine and carbon that have many manufacturing and industrial applications. They are also found in consumer products such as carpeting, apparel, personal care items, and fast food paper wrappings. PFAS is used in firefighting foam, wire and cable coatings, and in the manufacturing of semiconductors. Health studies have linked small doses of PFAS, including PFOS, to reduced immune response, raised cholesterol, and cancer.

PFAS has been widely used within the chrome plating industry as a chemical fume suppressant. According to the National Association for Surface Finishing, it’s estimated that 30 – 40% of surface finishing facilities have chromium electroplating processes. The beginning of its use in the industry goes back to the 1950s and most recently has been required by many states to reduce harmful hexavalent chrome air emissions. Because the chrome plating industry is so highly regulated and monitored, the required use of PFAS in the plating process is well known and therefore has been “on the radar” of state and federal enforcement agencies as potential sources for PFAS pollution.

For more information or assistance with PFAS in the chrome plating industry in California, contact Senior Geologist Lyn Love at 562-426-9544 or LLove@scsengineers.com.

For help assessing and managing PFAS nationwide please contact service@scsengineers.com for assistance.











Posted by Diane Samuels at 12:24 pm
Tag Archives: scs

SCS Advice from the Field: Gas Removal from Leachate Collection Pipe and Leachate Sump

October 29, 2019


Gas production during the active life of landfills is a well-known phenomenon, with many means to collect and dispose of landfill gas already developed and implemented in landfills across the world. What is less known in the industry is that concentration of landfill gas near the lining system can reach significant levels, causing high gas pressure developing in, and around, the leachate collection drainage layer. High-pressure gas can potentially fill voids within the drainage layer (geocomposite or sand), causing conditions impeding flow in the drainage layer, adversely affecting the free flow of leachate.

Leachate collection pipes encased in gravel are pervious media through which landfill gas can easily travel and high pressures transfer to the sump area. Such conditions can cause significant odors near the sump due to emissions of landfill gas through the drainage layer and the overlying sand layer on the side slope of the perimeter berm near the sump. In addition, high-pressure builds in the riser and cleanout pipes.

The inverted U-shaped section prevents condensate from entering the secondary system riser, while gas is removed effectively from the secondary system.

Consider an effective gas pressure removal system in the sump by installing vertical pipes on the riser pipes behind structures, on top of the perimeter berm, shown here. The vertical pipes are blind-flanged initially at cell construction completion. If the gas pressure build-up becomes significant, or odors are detected in the sump area, the landfill operator connects the vertical pipes to a vacuum source near the sump.

Using a connecting pipe to a vacuum source can also be used to discharge condensate from the gas collection and control system directly into the leachate collection riser pipe.

For a double lining system, with a riser pipe in the primary system and another in the secondary system, both risers will have vertical pipes on them, and both connected to the vacuum source.

However, condensate flowing down the connecting pipe from higher elevations toward the risers should not enter the secondary system. Block it by using a manifold, as shown in the image.

Operators may have a vertical pipe installed on the leachate collection pipe cleanout to apply vacuum directly to the leachate collection pipe.

Keeping gas pressure low in and around the leachate collection pipe promotes the free flow of leachate through the geocomposite or granular medium drainage layer to the leachate collection pipe, and improves leachate removal from the disposal cell.

Using gas removal piping at leachate sumps is highly recommended for warm or elevated temperature landfills where efficient leachate removal from the leachate collection system is another means for controlling landfill temperatures.


About the Author:  Ali Khatami, Ph.D., PE, LEP, CGC, is a Project Director and a Vice President of SCS Engineers. He is also our National Expert for Landfill Design and Construction Quality Assurance. He has nearly 40 years of research and professional experience in mechanical, structural, and civil engineering.

Learn more at Landfill Engineering and Leachate Management




Posted by Diane Samuels at 6:00 am
Tag Archives: scs

New Report on Curbside Recycling Programs Free to SWANA Members

October 24, 2019

SWANA’s Applied Research Foundation report “Resetting Curbside Recycling Programs in the Wake of China” looks at the impact of China’s National Sword Policy.

Issued by the Solid Waste Association of North America’s (SWANA) Applied Research Foundation (ARF) the report provides many observations and insights regarding the impacts of China’s National Sword Policy on curbside recycling programs in the United States and Canada and several options that are preferable to dropping curbside recycling.

David Biderman, SWANA’s Executive Director, and CEO announced the report at WASTECON®. , “Resetting Curbside Recycling Programs in the Wake of China,” is available immediately, free to SWANA members. The report provides crucial data, guidance, and recommendations that will help municipalities and local governments assess alternatives.

China’s National Sword policy banned the import of several recyclable materials from all countries — including mixed paper and mixed plastics; reduced the acceptable level of contamination in scrap and recyclable materials not banned to 0.5%; and imposed tariffs on cardboard, other recovered fiber, metals, and plastics specifically from the United States.

According to the report, the impact of these policies has contributed substantially to a 50% reduction in the revenues received from the sale of recyclables recovered through curbside recycling and has resulted in increased processing costs at material recovery facilities (MRFs).

Municipalities and recycling program managers are taking the opportunity to reevaluate the costs, funding mechanisms, and materials targeted by their curbside recycling programs to make them more sustainable and effective. Most are using solid waste master planning that works with their overall program to remain economically sustainable.

Large urban areas are focusing on creating integrated programs to meet their solid waste and recycling goals while diverting food to food banks, other organic material into compost, all of which reduce greenhouse gas emissions and provide sustainability.

Download the paper, Resetting Curbside Recycling Programs in the Wake of China

Solid Waste Master Planning, Economic Sustainability Case Study City of Oklahoma

Solid Waste Master Planning, Program Integration Case Study  City of San Diego





Posted by Diane Samuels at 6:00 am
Tag Archives: scs

SCS Advice from the Field: Leachate Force Main Casing Pipe and Monitoring for Leaks

October 22, 2019

Landfill operators may add a casing pipe to their leachate force main for additional environmental protection. Consequently, the leachate force main is entirely located inside a casing pipe where the leachate force main is below ground. In the event of a leak from the leachate force main, liquids stay inside the casing pipe preventing leakage into the ground. During monitoring, checking for the presence of leachate inside of the casing pipes is routine.

For many years, I designed the installation of an HDPE monitoring manhole at each leachate removal sump station. Designed at the top of the perimeter berm, where the leachate force main is normally located, these manholes normally remain dry. The leachate force main crosses through the manhole without discharging into it. The casing pipes connecting to the manholes are open-ended at the manhole, draining directly into it. Easy to monitor, if liquids are present, you probably have a leak.

Using field operations experience, we improved the design.

By eliminating the dry manhole for cost savings, we redesigned the leachate line (at right) from a sump connected to the leachate force in the landfill perimeter berm by a double-cased tee.

A blind casing pipe above the surface leaves the leachate line exposed for piping purposes. In this design, the casing pipe does not connect to any vessel for monitoring; instead, it has a pressure gauge or small valve on it for pressure monitoring.

If the gauge reads pressure in the casing pipe, it is indicating there is liquid inside the casing pipe; leachate is leaking from the force main and filling the casing pipe causing the pressure to build. If using a valve, monitoring is opening the valve to look for liquid coming out of the casing pipe. Regularly monitored pressure gauges or valves is a standard operating procedure and easily accomplished.




Posted by Diane Samuels at 6:03 am
Tag Archives: scs

EREF Celebrates 25 Years of Industry Research and Education

October 18, 2019

This week the solid waste industry is celebrating 25 years of valuable research, inspiration, and support of solid waste professionals provided by the Environmental Research & Education Foundation. On Tuesday, industry leaders met to recognize EREF’s impact on the solid waste industry and acknowledge the role stakeholders play supporting the Foundation and sharing the resulting research.

EREF is a trusted source of data-driven, empirical science for the betterment of solid waste management and policy informing industry, federal and state agencies, academics, and the public. The foundation is also a resource for students and young professionals in the solid waste industry, by providing scholarships, internships, and MSW eTextbook programs. These programs inspire young professionals and ultimately add to EREF’s research and the industry as a whole.

EREF receives funding and participation from companies such as SCS Engineers to continue new research and scholarship programs such as the Robert P. Stearns Master’s Scholarship. The foundation is remarkably successful in producing unbiased reports, which translate ideas and data into action for sustainable waste management practices.

Thank you and congratulations from your colleagues at SCS Engineers for 25 years of scientific research and educational initiatives for the benefit of our industry and the communities we serve.





Posted by Diane Samuels at 9:28 am
Tag Archives: scs

Solar Ready CCR Site Closures Help Energy Companies Move Toward a Sustainable Future

October 17, 2019

Solar Ready CCR Site Closures Help Energy Companies Move Toward a Sustainable Future

Electricity is the one big energy source that can be free of carbon emissions. You can make it from the sun. You can make it from the wind. Tap the heat of the Earth, hydropower. While all utilities are moving in a sustainable, environmentally friendly direction, Aliant Energy stands out for making progress and keeping rates reasonable for consumers.

At the recent USWAG Workshop on Decommissioning, Repurposing & Expansion of Utility Assets held October 2019, Eric Nelson presented on the opportunities for solar generation at closed CCR sites and provided an overview of civil and geotechnical considerations when redeveloping closed sites as solar generating assets. His presentation demonstrated these considerations through the use of a case study.

SCS Engineers has assisted Alliant Energy with the design and/or construction of multiple coal combustion residual (CCR) surface impoundment closures. Two of the completed closures are the former Rock River Generating Station in Beloit, Wisconsin, and the M.L. Kapp Generating Station in Clinton, Iowa.

Both sites were closed by incorporating Alliant Energy’s vision to create “solar ready” sites. The Rock River site is now home to just over 2 megawatts (MW) of solar photovoltaic (PV) generating capacity, which was developed on the footprint of the now-closed on-site landfill and ash ponds. Although no solar assets have been developed at the site, the M.L. Kapp ash pond closure represents another opportunity for Alliant Energy to repurpose a closed ash pond for clean power.

Two additional closure designs are in process that incorporates similar elements, making them available for future solar generating asset development.

For more information visit SCS Engineers

Eric J. Nelson, PE, is a Vice President of SCS Engineers and one of our National Experts for Electric Utilities. He is an experienced engineer and hydrogeologist.




Posted by Diane Samuels at 6:00 am
Tag Archives: scs

Navigating the RNG Pipeline Permitting Process at BioCycle’s REFOR19

October 15, 2019

BioCycle REFOR19, 19th Annual Conference, Madison, WI

Planning your RNG pipeline design requires a review of how the project might impact land use, archaeologic resources, endangered resources, floodplains, wetlands, and soil erosion. The linear nature of pipeline projects often requires permits from multiple agencies, transportation authorities, and railroads. Getting the agencies involved early and identifying review timeframes will help keep your project on track.

Betsy and Andy will present two case studies for RNG pipeline projects where multiple permitting agencies were involved. Each project presented unique challenges that required additional coordination with local, state and federal agencies as well as the Department of Transportation and railroad operator. They share the obstacles faced and how you can overcome or avoid them to keep your project on schedule.

Conference Information and Registration

Betsy Powers, SCS Engineers

Betsy Powers, PE, is a senior project manager/civil engineer with over 20 years of consulting experience in civil and environmental engineering at SCS  Engineers. She has extensive experience in the solid waste field and is currently managing the pipeline permitting and design for two RNG projects. Her experience includes design, permitting, and construction of municipal and industrial solid waste landfills, as well as recycling and composting facilities. She managed the civil site design for Wisconsin’s first utility-scale solar photovoltaic (PV) system on a closed industrial landfill.


Andy Zikeli, Air Liquide Advanced Technologies

Andrew Zikeli is a senior biogas project specialist with over 8 years of biogas to renewable natural gas project experience and over 25 years of consulting experience in environmental compliance and permitting.  He has extensive experience in RNG project development, plant design, permitting and commissioning, and is currently managing pipeline installation for two Wisconsin RNG projects.



Biogas, CNG, and RNG case studies , information and resources here



Posted by Diane Samuels at 6:00 am
Tag Archives: scs

From a Summer Evening to Fall Colors

October 11, 2019

We thank our colleague Wendell Minshew for capturing the essence of why we work in environmental consulting and the perfect way to end the workweek.


Happy Friday from SCS Engineers.


Two Chairs


Flowing Leaves


Wendell L. Minshew, PE, SCS Engineers

About Wendell Minshew: Wendell is a Senior Project Manager in our Sacramento office. He has over 30 years of engineering experience. He specializes in civil engineering services in the planning, design, permitting, and construction management of solid and hazardous waste facilities. He is a licensed Professional Engineer in California and Nevada.

And an amazing photographer!





Posted by Diane Samuels at 6:04 am
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