Knowledge Hub

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 .
Inflow/Infiltration Sources Captured on Video
Inflow/infiltration or clean water entering the collection system can strain capacity and cause overflows.
The 411 on Preventative Maintenance Programs
So, you reviewed thousands upon thousands of feet of CCTV footage and now you have mountains of data
Multi-Scan Inspection Drives Large Diameter Pipe Rehab
Like most cities across the US, the City of Tulsa is dealing with the maintenance and operation of an aging sanitary sewer infrast...
Dog Day in the Field - Mishap while performing manhole inspection
On any day, given the nature of the work we do at RJN, our firm’s field personnel see all manner of strange things. 

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 t...
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. 
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 w...
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 w...
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 syst...
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 ...
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 overs...
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-ye...
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...
Manhole Rehabilitation Specification Tips
NASSCO has elevated and standardized the approach for inspecting sewer assets, both sewers using Pipeline Assessment Certification...
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 o...
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 operatio...
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.
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 Inter...
Case Study: Designing an Asset Program to Grow with the Community
This small Texas town cast a gigantic vision for creating an asset management program for their water and wastewater systems. RJN ...
RJN named a 2022 Zweig Group Best Firms To Work For
RJN Group Inc. has been named a Zweig Group Best Firms To Work For company. With approximately 170 employees spread across offices...
Executing Force Main Screening Level Assessments
Force mains are a bit of an enigma in the municipal infrastructure landscape. They are critical system assets with a very high con...