RJN's Knowledge Hub

Learn to successfully leverage MSI technologies to evaluate your system’s condition with these three easy steps.

Managing Inflow and Infiltration in Wastewater Systems

One common challenge for all wastewater systems is inflow and infiltration (I/I). By understanding how I/I impacts your system you can safeguard the service life of wastewater assets and ensure sustainable and reliable services for the community. Let's start by unpacking the differences between infiltration and inflow.

Lower Costs with Water Asset Management Best Practices

Embracing a robust and proactive approach to managing sewer, water, and stormwater infrastructure assets can help utility managers improve service reliability, extend the lifespan of assets, avoid failures, and minimize the cost of reactive maintenance.

RJN Named A 2023 Best Firms To Work For Award Recipient

RJN Group Inc. has been named a Zweig Group Best Firms To Work For. With approximately 170 employees spread across offices from Chicago to Houston to Baltimore, achieving this recognition took a tremendous effort from our nationwide team.

Steve Jolley Joins RJN's Senior Leadership Team

Steve Jolley, PE, has joined RJN’s leadership team as vice president of field operations. In this new-to-RJN role, Steve will be responsible for overall field operations.

RJN Announces New Vice Presidents

RJN is pleased to announce that Elizabeth Aguin, PE, and Zach Matyja, PE, have been named Vice President of Operational Support and Vice President of Client Services, respectively.

MSI Drives Rehab Planning for Large Diameter Pipes

Multi-sensor diagnostics used to drive rehabilitation of wastewater pipe

Jeff Griffiths, ENV SP, Joins RJN's East Coast Team

RJN Group, Inc., is pleased to announce that Jeff Griffiths, ENV SP, has joined its team. Serving as the manager of infrastructure assessment, Jeff will work to bring RJN's water and wastewater system evaluations to new markets across the Mid-Atlantic region.

Knowing the What, Where, and When of Storm Water Assets

Building a stormwater asset inventory give the what, where, and when for O&M and capital planning.

Executing Force Main Screening Level Assessments

Screening level assessments (SLA) enable collection system owners cost-effectively evaluate the condition of their force mains.

RJN's Karol Giokas is a Contributing Author of Manhole Rehab Factsheet

Downloadable sanitary sewer manhole rehabilitation resource on materials and methods for renewal.

West Park Five Years Later: Alternatives Analysis Provides Proper Protection

Revisiting the effectiveness of the cost/benefit analysis to alleviate wet-weather sewer system surcharging and create wastewater storage.

RJN Announces Jose Maldonado as Vice President

RJN is pleased to announce that Jose Maldonado, PE, has joined RJN’s senior leadership team as vice president. Jose will now oversee operations for RJN’s Houston office. His promotion to vice president is effective immediately.

When Inflow & Infiltration (I/I) Persists

When you have completed a comprehensive inflow/infiltration (I/I) reduction program, but I/I levels are still not where you want them to be, what’s next? Finding those persistent sources requires diligence and good quality data.

Can Conserving Water During Rain Prevent Overflows? (Part 1)

I recently caught up with an old college friend who mentioned she was refraining from using water during heavy rains so that she wouldn't contribute to overloading the sewer system. It sparked an impromptu lesson on urban hydrology and after hearing similar concerns expressed elsewhere, I thought it was worth sharing my thoughts. No one welcomes beach closings or basement backups, but is abstaining from water use during storms a good way to help prevent sewer overflows? The answer is maybe sometimes, but not really, depending on context. Let me explain.

Kraig Moodie Joins RJN's East Coast Leadership Team

RJN Group, Inc., is pleased to announce that Kraig Moodie has joined its senior leadership team to oversee all East Coast operations. Servings as a regional vice president, Kraig will ensure that RJN continues to deliver on its promise of providing pragmatic and innovative flow monitoring and wastewater system engineering solutions to our clients.

RJN Announces New President and CEO, Paul Costa to lead the firm

RJN is pleased to announce the Board of Directors has selected Paul Costa to serve as RJN’s next President and CEO. Costa, a 30-year industry veteran, assumed the leadership role at the beginning of August 2021.

Case Study: An Award-Winning Emergency Siphon Repair Project

Designing large diameter gravity sewers is challenging. Designing gravity sewers in fully-developed urban areas is even more so.

West Park: Alternatives Analysis Provides Proper Protection

If the last few years have shown us anything, it is that storm events are trending toward the severe end of the spectrum in terms of both intensity and frequency. However, while major storms typically make the headlines as they pose a serious threat to our nation’s communities, sometimes it is the less intense storms that cause the most issues for collection system operators.

Inflow/Infiltration Sources Captured on Video

Inflow/infiltration or clean water entering the collection system can strain capacity and cause overflows. Identifying sources and mitigating those sources through rehabilitation can significantly improve the performance of the collection system. Water seeping into the system through dead laterals, interstitial flow, and leaking connections is often not just seeping as shown in these videos.

RJN Earns Best Firm to Work For Recognition Again in 2021

RJN Group Inc. has been named a Zweig Group Best Firms To Work For. This recognition is a culmination of effort . by all of our employees—from Denver, to Houston, to Baltimore. RJN Vice President of Human Resources Gary Wendel said that he was very proud of RJN’s employee-owners for the part they each play in creating an award-winning work environment.

Fixing Stormwater's Bad Grade for Current Structural Conditions

On its first American Society of Civil Engineers (ASCE) report card, the nation’s stormwater infrastructure received a D+. While a D+ is not unheard of, as wastewater infrastructure also received a D+, it still does not bode well for our stormwater infrastructure. Flooding issues have compounded as impermeable surfaces increase with development and current systems age beyond their designed service life. Unlike its sewer and water counterparts, stormwater doesn’t benefit from the administrative muscle that can facilitate expedited progress.

Case Study: Large Diameter Lining Project

In 2014, RJN found the City of Joliet had numerous interceptors in poor condition. One of which, the large-diameter Rock Run Interceptor (RRI), was flagged as a high priority due to its proximity to the Rock Run Creek.

Manhole Rehabilitation Specification Tips

NASSCO has elevated and standardized the approach for inspecting sewer assets, both sewers using Pipeline Assessment Certification Program (PACP™) standards and structures using Manhole Assessment Certification Program (MACP™) standards. However, once a structure inspection has been performed, how do you get to a rehabilitation program and develop specifications for bidding?

Can Conserving Water During Rain Prevent Overflows? (Part 2)

In Part 1, this discussion centered on whether conserving water on rainy days could help prevent overflows in separated sewer systems. Combined sewers are the focus of this discussion. By design, combined sewers are significantly larger than sanitary sewers, so in a well-functioning combined sewer system, pipeline capacity is rarely the primary constraint. Instead, it is the capacity of downstream treatment facilities that can easily be exhausted.

The 411 on Preventative Maintenance Programs

So, you reviewed thousands upon thousands of feet of CCTV footage and now you have mountains of data on your sewer system. Great, but now what? How do you take the time, effort, and spreadsheets teeming with information from your CCTV endeavors and turn them into something that works for you? As your fight-or-flight response begins to kick in, take a moment to collect yourself and know that you’re not alone. Now that you’ve recentered yourself and crept back in from the fire escape, our asset management pro, Tristan Nickel, PE, AWAM, has some insights on putting your data to work.

Randy Brodner, PE Joins RJN's Omaha Team

RJN Group, Inc., is pleased to announce that Vice President Randall “Randy” Brodner, PE, has relocated to Omaha to take the helm of RJN's Nebraska-based operations. With 15 years of experience delivering engineering assessment and design services for large and small diameter collection and distribution system pipelines, Randy will bring new perspectives to providing innovative solutions to our Nebraska clients.

Avoiding the Perils of CIPP While Maximizing Its Benefits

So your engineering team has decided to use cure-in-place-pipe (CIPP) to prolong the useful life of the municipal pipelines, but what can the team do to ensure it's successful? Because CIPP programs have become commonplace, it is becoming more prevalent to encounter CIPP lining failures on installations long before the end of their estimated life, oftentimes within the first year of installation. These failures are expensive, frustrating, and completely avoidable.

RJN Announces New Principals: Randy Brodner, PE, & Todd Leistner

At RJN, when individuals demonstrate acute business acumen and an aptitude for leadership, our firm takes notice. With this in mind, we are pleased to announce that Randall Brodner, PE, and Todd Leistner have been named RJN principals.

Asset Management Program Designed to Grow

A case study featuring the development of a water and wastewater utility maintenance program for a growing Texas community originated by RJN's risk analyses.

Avoiding the Perils of CIPP While Maximizing Its Benefits

Best practices for engineering design and construction of cure-in-place pipe, a trenchless rehabilitation technology.

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