
RJN Group, Inc.
Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL
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Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL

Engineering Design Expertise

We are problem solvers with sustainable solutions to complex challenges
St. Charles, IL+5
Engineered For Life

Your Trusted Engineering Partner in the Pacific Northwest
Bingen, WA

Drainage studies, floodplain analysis, and H&H modeling for land developers, engineers, and property owners
Azle, TX

Our work moves people. Our people move us.
Philadelphia, PA+15

Pioneering Underground Energy Storage & Subsurface Injection

The Global Water Practice
Richmond, VA
A History of Engineering Success
Fort Lauderdale, FL+14

Phase I Environmental Site Assessments (ESA) and Prepares Assessments In Accordance With ASTM Standard E1527-05.
Bluefield, VA

Class 1 Injection Well Technology
Round Rock, TX

Quality of Life Through Excellence in Engineering
Jackson, WY+2

Developing Solutions for Environmental Challenges
Springfield, VT+2

Environmental Engineering & Advocacy.
Sacramento, CA

Integrity. Value. Merit.
Engineering With a Cause
Sacramento, CA+9
Best-In-Class Safety, Reliability, & Compliance Solutions
Wichita, KS

Creative Thinking. Custom Solutions.
Memphis, TN+19
Foreseeing critical project phases and providing practical engineering solutions

Precise. Responsive. Solutions.
Hummelstown, PA

Providing Environmental, Surveying, Engineering, and Geoscience Solutions to the Great Lakes Region
Muskegon, MI

Geotechnical Engineering and Environmental Consulting.
Camp Hill, PA

Experienced. Expedient. Exact.