Page 6 - Conf2021 Vol39 No4

Mini-Roundabout: from across the state discuss challenges, Upgrades to the trickling filters to include new
A Neighborhood Solution successes, and lessons learned in pavement plastic media to replace the existing wood
(1:30 p.m.) management. Every community throughout media; Conversion from coarse- to fine-bubble
diffused air system; Construction of a new
Tennessee works diligently to leverage limited
Presenter: Joshua Scheenstra, Transportation resources and maintain their roadway asset RAS re-aeration tank and two new secondary
Engineer, OHM Advisors at the highest standard. Topics of discussion clarifiers; Construction of a new disinfection
Mini-roundabouts can be effective tools in will include: pavement management practices; tank and installation of a state-of-the-art
reducing speeds and improving livability collecting, analyzing, maintaining, and reporting PAA disinfection system; and Miscellaneous
in neighborhoods. The modern roundabout pavement data; decision making strategies, electrical, instrumentation and SCADA
has many advantages over other types of and overall pavement serviceable condition over improvements throughout the facility
intersections including traffic calming, reduced a given period of time for the least cost. With At the time of alternatives selection, the City
maintenance, efficient traffic management, public works officials representing communities had not procured full funding for the entire
and increased vehicle and pedestrian safety. across the state, from major metropolitan areas construction project. Discussions were held over
Mini-roundabouts have the same advantages to small rural communities, the roundtable is multiple months regarding prioritization, timing
as larger diameter roundabouts with the added sure to provide valuable knowledge for your for regulatory compliance, construction duration
benefits of being able to fit in smaller R.O.W. pavement management program. and schedule impacts for acquiring funding. The
footprints and further reducing speeds. City intended to leverage State Revolving Fund
This presentation will focus on a mini- Leveraging Alternative Delivery (SRF); and potentially WIFIA, loans to fund most
roundabout that was recently built in a to Achieve the City of Memphis’ of the improvements, but to obtain funds from
residential neighborhood in Southfield, MI. Vision—Process Upgrades at SRF, fully completed drawings and specifications
Content will include intersection alternatives the T.E. Maxson Wastewater were required to begin the loan approval process.
that were evaluated, why a mini was chosen, Treatment Facility (2:30 p.m.) In the end, the joint efforts of the City and CDM
design considerations and challenges, and Smith staff resulted in $85M in funding from
the results. Additionally, the presentation Presenter: Zack Daniel, P.E., Vice President, SRF and $150M in funding from WIFIA.
will include an overview of roundabouts Client Service Leader, CDM Smith, Inc. To expedite construction, the design was broken
and their general characteristics, benefits, The City of Memphis, Tennessee owns and out into individual guaranteed maximum price
and shortcomings along with several other operates the T.E. Maxson Wastewater Treatment (GMP) proposal packages. This would allow the
examples. Time will be allocated for questions Facility (Maxson WWTF), one of the two City to acquire funding in smaller, more attractive
at the end of the presentation. wastewater treatment facilities serving the loans from SRF as opposed to one large loan
Joshua Scheenstra, Transportation Engineer, greater Memphis region. The WWTF is a trickling that was not likely to be approved. These smaller
OHM Advisors filter/activated sludge wastewater treatment packages would also improve the ability for
Joshua is a Transportation Engineer with OHM facility. local and M/WBE firms and contractors to bid on
Advisors in Nashville, TN. Born and raised in Originally constructed in 1975, the facility has smaller, more manageable portions of the work.
East Africa, Joshua was accustomed to traveling a rated capacity of 90 million gallons per day This presentation will discuss how the use
on poor roads where safety was seldom a high (mgd); and a peak hour flow of 170 mgd. In of the DN/CMAR project delivery is allowing
priority. This led him to pursue a Bachelor of 2009, the City began negotiating a new NPDES the City to secure funding by package (from
Science in Engineering at Calvin University in permit that included requirements for the both SRF and WIFIA), expedite construction,
Grand Rapids, MI and subsequently work as a addition of disinfection to the treatment process. including implementing value engineering in
Transportation Engineer. Joshua started with A disinfection evaluation was conducted from the design and construction process, increase
his current employer, OHM Advisors, in 2013 2011 to 2015 at both of the City’s facilities; the number of local and M/WBE subcontractor
and spent the first five years working in their and during this evaluation, it was determined bid opportunities and phase the process
Livonia, MI office. In Michigan, Joshua had the that the WWTF was nearing its biological improvements at the Maxson WWTF to best serve
opportunity to work on numerous roundabout treatment capacity due to heavy industrial the short and long-term goals of the City.
projects from high level concepts to full loading. In late 2015, CDM Smith was retained Zack Daniel, P.E., Vice President, Client
design and construction. Transferring to OHM’s as the Designer/Construction Manager at Risk Service Leader, CDM Smith, Inc.
Nashville office in 2018, he has continued to be (DN/CMAR) to evaluate, design and construct Zack is a Vice President and Client Services
involved in the design of dozens of roundabouts facility improvements to address the following Leader for CDM Smith, Inc. in their Nashville
across the Midwest and desires for more critical issues for the City: Reduction of plant and Memphis, Tennessee offices managing
communities to understand their benefits and odor and off-site odor migration; Increased all projects and operations in middle and
consider implementing them where practical. biological capacity to meet the permitted western Tennessee, Arkansas and Alabama.
90 MGD at current (heavy industrial loaded) He earned his bachelor’s and master’s degrees
Pavement Management and concentrations; Design and implementation in Civil Engineering from The University of
Preservation Roundtable of a disinfection process (facility has never Memphis and has over 20 years of experience
(2:30 p.m.) disinfected prior to discharge); and Meet or in stormwater, water and wastewater projects
exceed Minority and Women-Owned Business
Presenter: Emily Harrell, City of Lakeland (M/WBE) goals and encourage local job growth. including development and implementation of
Public Works Director storm water utilities, water quantity and quality
Join in our pavement management and The recommended scope of improvements improvements projects, and various water and
wastewater treatment, collection,
preservation roundtable, as decision makers was submitted in early 2016 and included:
Improvements to the course screening facility; and distribution projects.
6 TPW Conference 2021