Project Profile: Major Stormwater Mapping Project Locates Many Previously Unknown Structures

At this point, you are probably very familiar with RJN’s capabilities when it comes to wastewater services, including condition assessments like manhole inspections, smoke testing, dyed water flooding, and building inspections as well as flow monitoring, hydraulic modeling, master planning, SSES, and remediation and design. What you might not know is that RJN can apply our impressive skill set and use of advanced technologies to stormwater systems as well.

For example, over the last three years, RJN has been using advanced technologies to map and assess the condition of the City of San Antonio’s stormwater collection system with stellar results led by RJN’s Stormwater Lead and Project Manager Noelle Gaspard, P.E., GISP, CFM.… Read the rest

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Technology Spotlight: RJN Deploys Device that Provides 360-degree Image Captures of 100 Percent of Structures

RJN Group, Inc. has yet another option for manhole inspection in its growing portfolio of evaluative tools: It is called Panoramo SI, offered by IBAK, and it proves to be very helpful due to its technologically advanced capabilities.

As RJN rolled out this IBAK camera for manhole inspections in Fort Smith, Arkansas, crews quickly became familiar with the easy-to-use scanning system while building speed and production numbers. On the office side, manhole images coming in for coding are extremely clear and detailed, allowing office staff to quickly provide accurate NASSCO MACP, Level 2 inspections to the client. Soon RJN will be expanding usage of this technology to other upcoming projects, including Jefferson, Arkansas, and COSA stormwater (City of San Antonio, Texas).… Read the rest

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RJN’s Methods for Surviving this Winter’s Madness

Safety for Cold Weather

Snow on a manhole cover resembling a snowflakeThis winter has been brutal and that is putting it mildly. Even though the temperatures are at record setting lows and the snow is piling up to heights well above our vehicles, RJN field crews still need to get out there to perform field investigations for our clients.

To prepare our field crews for the cold weather (and at times Arctic Blasts), we stock every field vehicle with an emergency kit, blankets, and hand warmers. Each crew member is supplied with snow pants, winter jackets, winter coveralls, latex coated winter gloves, and full face masks.

We don’t stop at just providing the crews with the right materials.… Read the rest

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Wastewater system improvements – Hot Springs as industry innovator

Hot Springs HeaderHistory

In August 2008, the City of Hot Springs was placed under a Consent Administrative Order (CAO) by the Environmental Protection Agency (EPA) due to violations primarily related to wastewater overflows in the collection system.

Wastewater system overflows are typically caused by pump station failures, inadequate pipe size, piping degradation, and from insufficient maintenance and repair over time.

The CAO required that the city:

  • Eliminate dry weather overflows by January 2011. Dry weather overflows typically result from pump station mechanical or power failure.
  • Eliminate wet weather overflows by January 2018. Wet weather overflows typically result from inflow and infiltration of stormwater, thereby exceeding system capacity during heavy rainfall events.
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Going Down the Manhole – Tulsa Style

How does one descend a manhole when its opening is nine feet above the ground but the tripod is only seven feet tall?


RJN’s Tulsa office recently faced this dilemma while doing manhole inspections for the City of Tulsa, Oklahoma. Inspections of above-grade structures are always challenging, but when the rim is above the inspector’s head, some specialty equipment and a little creativity are necessary to get the job done. In addition to the height of the manholes, the configuration of the structures created another obstacle. The openings were typically toward the corner of the flat top slab where the tripod legs could not straddle the opening and maintain level footing on the slab, and highly uneven tripod legs make for a very un-sturdy and unsafe setup.… Read the rest

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