RJN Group
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RJN Group, Inc. (RJN) is a professional engineering and specialty field services firm providing sustainable collection system solutions for infrastructure owners. Established in 1975, RJN has earned national recognition as a professional engineering consulting firm and field services provider. RJN is ranked by Engineering News Record as a Top 200 Environmental Firm and a Top 500 Design Firm.
RJN Group
3y ago
So, you reviewed thousands upon thousands of feet of CCTV footage and now you have mountains of great 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.… Read ..read more
RJN Group
4y ago
With schools closed across the nation due to COVID-19, many of you may have found yourselves filling the role of teacher to your kids. We’ve got some great news: RJN can help! Click the link below to download a learning guide, developed by the EPA, that has links to Pre-K–12 environmental education resources with online activities, curricula, storybooks, as well as printable activity sheets to encourage daily learning and fun.
We hope these resources will provide meaningful educational activities about the many issues we face with stormwater pollution, water quality and other envi ..read more
RJN Group
4y ago
When you have completed an extensive
SSES program and implemented rehabilitation to remove Inflow/infiltration (I/I)
sources from your system, 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. A suburban Chicago community was faced with these issues
after 10- and 25-year storms caused hundreds of reported basement backups and
an EPA regulatory action. After determining that I/I was still a major issue
using collected flow data, RJN Group conducted additional sanitary sewer inspections
and instal ..read more
RJN Group
4y ago
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.
Understanding the current state of the CIPP market, including the different types of liner resins, the different installation and curing techniques are important in this ever-changing market. When best practices are incorporated into CIPP design and specification development, it ensures a more success ..read more