Thought Leadership

Are you ready for Colorado’s new Digital As-Constructed Requirements?

By Nate Osterberg, Pipeline Inspector, WSB

Effective January 14, 2021, the Colorado Department of Transportation (CDOT) will mandate that all new permitted utility installations meet Digital As-Constructed Requirements (DAC) in accordance with the Utility Accommodation Code Rule 3.3.4.6.2.  New requirements under State Highway Accommodation Code, 2 CCR 601-18, Rule 3.3.4.6.2 Digital As-Constructed Requirements, Plan and Profile 3.3.4.3 mandate uniformity in utility mapping, as-builts and plan-and-profile submissions. Utility permits will begin stipulating this requirement soon.  Additionally, there are new Plan and Profile requirements for all Horizontal Directional Drilling (HDD) operations within CDOT’s Right of Way.

But what does this mean?

Essentially, this means that anyone working within CDOT’s Right of Way must perform a digital utility locate survey for any underground utilities – commonly known as Subsurface Utility Engineering (SUE).  The survey must be submitted using their chosen software. 

What is SUE?

SUE is an engineering practice used to obtain reliable underground utility information. Accurate and successful SUE practices benefit contractors, transportation departments and utility companies by limited the need for unnecessary utility relocations, avoiding unexpected conflicts and enhancing safety.

How do I do this digitally?

You combine the right tools with the right expertise. The digital world of 3D modeling can be intimidating, but a digital approach is actually more accurate, efficient and safe. Using mobile mapping software, utilities can be captured, recorded and displayed precisely accurately and seamlessly. 

Learn more about our complete Pipeline services or Utility Mapping and how to prepare for upcoming requirements.

Using Advanced Traffic Simulation Technology for Construction Staging and Maintenance of Traffic

By Do Nam, Sr. Traffic Operations Engineer, WSB

Construction operations on roadways disrupt normal traffic flow and generate undesirable delay. As traffic continues to increase throughout many metro areas, the Federal Highway Administration has been encouraging DOTs to be more proactive in their maintenance of traffic during construction. 

Good construction staging provides safe and efficient traffic operations throughout a project to minimize impacts on the community during construction. WSB has begun development of traffic models that simulate the flow of traffic under different staging scenarios. These traffic simulation models consider all available routes, how construction will impact these routes and how much additional time this will add for commuters. These models are being used to determine if there are improvements that need to be made on any surrounding routes to allow for better operations throughout construction.

This new approach is more proactive than past construction staging methods and is based upon data. By modeling actual construction conditions, we’re able to pinpoint where potential challenges may occur during construction and how to avoid them. Below is a list of potential benefits of construction staging and maintenance of traffic modeling using traffic simulation.

The benefits of advanced traffic simulation for construction staging and maintenance of traffic

1. By understanding what the impacts to the community are, we can be more proactive in mitigating them.
2. If we better understand what routes traffic will use, we can ensure that traffic controls are set up to accommodate additional traffic volumes.
3. Limit changes can be evaluated.
4. Informs decisions on critical maintenance items.
5. Provides a public engagement tool for cities and residents.

Through advanced traffic simulation technology, we’ve been able to enhance construction staging plans resulting in better projects.

US Fish and Wildlife Service decide listing monarch butterfly is “warranted but precluded”

By Roxy Robertson, Environmental Scientist, WSB

The United States Fish and Wildlife Service (USFWS) recently announced their decision to list the monarch butterfly under the Endangered Species act is “warranted but precluded”. The USFWS will not issue a proposed rule to list the monarch officially until 2024 due to insufficient funding and personnel. The listing will be evaluated annually to determine its eligibility and listing decision may be expedited under a new administration.

What does the USFWS decision mean?

• The “warranted but precluded” decision means that the USFWS has determined the monarch butterfly meets the definition of a threatened or endangered species, but the agency lacks the resources to take further action to list the species at this time.
• Since monarch butterflies still face threats and decline, there is a strong likelihood that monarch conservationists will challenge and litigate the decision.
• If litigation occurs, the USFWS could be ordered to prioritize the listing prior to 2024. This could result in a listing of the species within a short timeframe. If this occurs, partners enrolled in the Candidate Conservation Agreement for Monarch Butterfly on Energy and Transportation Lands (CCAA) are protected against regulatory actions that may occur following the listing decision.

Why is the CCAA important?

• By enrolling in the CCAA, partners will be protected against any regulatory actions that may result from future listing. Enrollment avoids risks to planned projects that may impact monarchs and their habitat by giving assurance that no additional regulatory requirements will be imposed by the USFWS beyond the terms of the CCAA agreement.
• The conservation efforts of enrolled partners will help to save the monarch species. This decision means that monarch butterflies are in trouble and unless the species experiences dramatic improvements in the next few years, a future listing of this species is certain.
• Enrollment in the CCAA demonstrates the partner’s commitment to conservation of this species.

Learn more about the Candidate Conservation Agreement and how the listing decision will impact right of way on energy and transportation lands. 

Simplifying MS4 compliance through technology

By Jake Newhall, Project Manager, WSB

Minnesota’s Municipal Separate Storm Sewer System (MS4s) are currently in the process of applying for coverage under the revised MS4 General Permit. The updated MS4 General Permit creates changes in the ways that MS4 permittees will operate, starting with modifications that address procedural and programmatic changes needed to comply with updated rules. 

One of the main changes is new performance-based responses to Total Suspended Solids (TSS) and Total Phosphorus (TP); including a TMDL assessment to identify and prioritize activities to achieve reductions. WSB’s SWAMP system helps to address these new regulations by streamlining TMDL compliance through tracking and documenting improvements that have been completed to date or since the baseline of TMDL development. The SWAMP system also helps target subwatersheds that are underperforming or lacking the necessary treatment to meet water quality goals. SWAMP improves efficiency by saving time on planning and modeling when developing an efficient plan to address TMDL requirements.

Aside from improving compliance with new MS4 TMDL requirements, SWAMP continues to help address existing MS4 requirements.

• Estimate TP and TSS reduction from existing ponds and BMPs
• Prioritize inspection and maintenance activities related to ponds and BMPs
  • Ensure standard operating procedures are in place and stormwater management features continue to function as designed
• Inspection and maintenance activities are automatically updated and reflect real-time information
• Tracks and stores completed activity records for on-demand reporting

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2021 Public Engagement Look Ahead

By Dan Pfeiffer, Director of Public Engagement, WSB

Spring is rapidly approaching; in Minnesota the snow is melting and talk of spring load restrictions has begun which means the construction season is just around the corner. Now is the time to start thinking about successful project communications and engagement, the first step is planning.

2020 brought out our adaptability showing that we can continue to move projects forward, engage the community, and bring decision-making to the virtual space. The focus on spatially distanced engagement will likely continue through at least the first half of 2021. We are optimistic that the second half of 2021 will bring us together in-person while continuing to offer virtual engagement, including virtual options will encourage increased community participation moving forward.

Develop a Plan

Identify your engagement goals, audience, and messaging before focusing on the tactic or tool you want to use. Your selected tactic or tool is only effective if your audience can use it.

Early and Often

Communicating clear usable messages early and often with the community reduces uncertainty and mitigates anxiety. Develop messages and calls-to-action that your audiences can read, understand, and use the first time they encounter it.

Tools and Techniques

Use tools and techniques that are familiar to your targeted audiences, including the physical space in your community. Even as we’ve all socially distanced in the pandemic, many of us still get out to the parks, trails, and community gathering spaces. Consider including in-place signage along roadways and trails, posters and sidewalk decals at faith institutions, and grocery stores to help inform residents.

In-person Engagement

A critical measure for when to begin in-person engagement, beyond public health official’s guidance, will be our communities themselves. When our communities begin to hold in-person events we should ask to be there with them.

Flexibility

Finally, remember that your communications and engagement program should be monitored and controlled like other project management processes. This allows for controlled changes to the plan to reflect on-the-ground conditions. 

As another construction season approaches, it is necessary to ensure plans are in place for staying connected to our communities. WSB’s team of communications and engagement professionals are ready to support communities through all phases of the project.

Using sonar technology to manage invasive species

By Tony Havranek, Sr. Ecologist, WSB

Implementing the Modified Unified Technique on Hanson Lake.

Asian carp are some of the newest invaders of our lakes, rivers and streams. Asian carp is a term used collectively to describe bighead carp, black carp, grass carp and silver carp. Fast growing and invasive, these specific fish are causing problems along the Mississippi River and surrounding bodies of water.

Asian carp are labeled as invasive because of their effect on ecosystems, water quality and native fish populations. Like the Common carp, Asian carp are highly invasive and have disrupted our food web.  In 2019, Hanson Lake #3 Homeowners Association (HOA), located in Nebraska, commissioned the WSB natural resources team to address the growing Asian carp population in the lake. The lake’s recreation had taken a hit because of the carp’s ability to fly out of the water, disrupting boaters and swimmers.

Hanson Lake is unique. In the past, commercial fishing crews had identified high populations of Asian carp, but effectively trapping and netting the fish was challenging due to obstructions at the bottom of the lake. These obstructions were preventing the nets from capturing the fish.

With many non-nettable locations located throughout Hanson Lake, we needed to find a solution that would drive the invasive carp into areas where we could capture and extract them.  A few years ago, I read about a new harvesting technique developed in China called the modified unified technique. Using this technique, fish are herded into a concentrated area where they can be easily netted and harvested. The technique requires the use of underwater speakers and block nets.

In collaboration with the United States Geological Survey (USGS), we decided to implement the Modified Unified Technique on Hanson Lake. We connected underwater speakers to amplifiers and played a pattern of noises including ice cracking, feedback, human voices, gunshots and hammering. The pattern of noises was played on repeat to begin herding the fish into the waiting nets. Throughout several days, the sound waves drove the fish into the nettable areas of the lake where seine nets were placed.

Once the harvest was complete, over 26,000 pounds of rough fish were removed from Hanson Lake. Comparatively in 2018, 8,200 pounds of fish were removed from the lake. Rough estimates indicate that over 30 percent of the lake’s rough fish were removed during this operation which will significantly improve recreation and water quality in the area.

What’s so bad about Asian carp?

Aquatic Invasive Species are behind some of the most drastic changes to freshwater systems in the world today. According to the U.S. Department of Agriculture, Asian carp were first brought to the United States for use in aquaculture ponds. These fish have now invaded the Mississippi River that connects to many bodies of water throughout the nation. Natural Resources organizations and groups are fearful that Asian carp will invade the Great Lakes which would have a severe impact on recreational and commercial fisheries.  Many cities, counties and watersheds are taking proactive steps to mitigate the invasive species to protect and preserve the ecology and water quality throughout the nation.

Read our full Hanson Lake Report here.

Your MS4 Permit Re-issuance To-Do List

By Meghan Litsey, Director of Environmental Compliance, WSB

The countdown to the release of the updated MS4 Permit has begun. The current MS4 Permit expired on July 31, 2018 and the MPCA is tentatively planning to reissue the updated Permit before the end of this year.

As a new permit approaches, take a few minutes to reflect on the progress you’ve made towards meeting your measurable goals over the last five years. We’ve developed procedures, adopted ordinances, formed partnerships, inspected and eliminated illicit discharges, monitored construction sites, and assessed our ponds…and now it is time to start thinking about the next permit cycle.

Soon we will work through the Part II application that outlines how our MS4 programs will come into compliance with the updated MS4 Permit requirements. Before the new MS4 Permit is released, there are some important to-dos to help you get organized before the permit arrives.

Here’s what you can do now:

1. Review and update your storm sewer system map. Take a close look at storm sewer, pond, outfall, and structural stormwater BMP locations and ownership information and complete updates, as needed.
2. Dust off ordinances, written procedures, enforcement response procedures, form templates, and save them in a convenient location – they’ll come in hand for the Part II application.
3. Complete a mock audit. By understanding the current state of your program compared to the existing requirements, you’ll be ready to fill in the blanks in the Part II application with ease. As a bonus, this activity will also help you start preparing for the 2020 MS4 Annual Report; a bit of preparation this fall will save hours of agony in June.
4. Organize your files and recordkeeping mechanisms. Consider creating a shared drive so everyone on your team can help track and contribute to MS4 activities. If your current set-up isn’t working, now is the time to find a system that works for easy tracking for the next permit cycle.
5. Continue the routine upkeep of your MS4 program to keep operations running smoothly, including staff training, erosion control inspections and enforcement, public education efforts, annual meeting, etc. The permit may be expired, but we must continue to implement our programs and ultimately manage our stormwater conveyance systems.   

Start checking things off your list, and in no time at all, you’ll be ready to take-on whatever the new MS4 Permit has in store.

WSB Achieves Complete Nitrate Removal in Drinking Water with Biological Filtration

Many groundwater sources in the United States have elevated levels of nitrate, which can lead to public drinking water suppliers exceeding the Environmental Protection Agency’s (EPA) Maximum Contaminant Level (MCL) limit of 10 mg/L. Regularly consuming water with nitrate concentrations above the MCL can reduce the oxygen-carrying capacity of the blood; resulting in shortness of breath and possibly fatality in humans. Conventional approaches to treating nitrate include ion exchange or reverse osmosis, both which are effective but generate large quantities of brine salts leading to multiple environmental concerns.

WSB has successfully removed nitrate from the groundwater without generating harmful residuals using biological filtration. Biological filtration removes nitrate through denitrification. Denitrification is the process by which nitrate is removed from the source water by converting it to non-toxic nitrogen gas (78 percent of the air we breathe is comprised of nitrogen). Biological filtration employs conventional filters to clean the source water. However, the filters are populated with naturally occurring microbes that enable the biological conversion of nitrate. Both the Minnesota Department of Health (MDH) and the EPA consider biological denitrification to be an efficient and effective method for treating nitrate in public drinking water supplies, additionally, it significantly reduces the amount of chemicals used and generate significantly fewer residuals. An external carbon source may need to be dosed to promote microbial growth in the filters depending on the type of water to be treated (groundwater or surface water).

Although biological denitrification has been used in wastewater treatment for decades, it has only been effectively used in the United Stated for drinking water treatment in recent years. Therefore, MDH requires a pilot study to be completed prior to implementing this treatment process full-scale. WSB recently completed a biological filtration pilot study for the City of Hastings, Minnesota.  Hastings’ water supply is provided by groundwater wells that are open to the Jordan Sandstone Aquifer. The Jordan Aquifer is a shallow and, sometimes vulnerable, aquifer that commonly produces groundwater with significant levels of nitrate. Hasting’s wells produce water nitrate concentrations that range from 6 to 9 mg/L. The city currently has an existing ion exchange water treatment plant that removes the majority of the nitrate before it enters the distribution system. The figure above shows the nitrate removal results obtained during the pilot study. The average influent nitrate concentration during the 12-week pilot study was 6.7 mg/L. WSB’s biological filtration pilot plant consistently reduced the influent nitrate concentrations in Hastings’ well water to below 1.0 mg/L. Several samples had non-detectable levels of nitrate which demonstrated the pilot plant’s capability to remove all nitrate from the City’s raw water. Nitrate removal did not occur immediately as the microbes required a couple of weeks to populate the filters in order to denitrify the water. These microbes are not harmful to humans as they are inactivated using disinfection prior to pumping the water to the distribution system. Nitrite is formed as an intermediary step between nitrate and nitrogen gas. Nitrite causes similar health effects than nitrate, but it is more toxic as its MCL is only 1.0 mg/L. Effluent nitrite concentrations were maintained at zero or near zero during the pilot study.

If your community’s source water has elevated nitrate levels, WSB’s water treatment engineers can work with you to develop a comprehensive pilot protocol, collaborate with state agencies, and conduct a pilot study using WSB’s pilot plant to help you determine if biological filtration can treat most or all of the nitrate in your raw water without generating harmful residuals. For more information, please contact WSB.

Candidate Conservation Agreement: Right of way preservation creates viable habitat for butterflies

By Alison Harwood, Director of Natural Resources, WSB

The U.S. Fish and Wildlife Service (USFWS) is investigating threats to the monarch butterfly. The monarch is being considered to join the list of species registered under the Endangered Species Act. The listing decision is expected to occur in December. If listed, projects and activities that involve impacts to the monarch or their habitat could face delays as a result of required USFWS consultation. To avoid potential delays, transportation and energy groups are enrolling in the Candidate Conservation Agreement with Assurances (CCAA) program. The CCAA allows transportation and energy groups nationwide to gain protections for certain covered activities by implementing conservation measures to sustain a viable habitat for monarchs, within the right of way on energy and transportation lands. Enrolling in the program can help these groups avoid costly project delays.

Protecting our environment allows us to work with nature, not against it.

The monarch butterfly is a beautiful sight, with its brilliant red-orange wings, black veined exterior and white spotting. However, this attractive pollinator is not something to take for granted. The monarch is a vital species in our planet’s ecosystem and contributes to the environment through pollination and as an important food source for birds, small animals and other insects.

Preserving and monitoring butterfly habitat within right of way segments is a top priority for the CCAA and affiliated members. In Minnesota, any stretch of right of way along the road is commonly identified as habitat; except for urban areas that contain no vegetation. This habitat supports milkweed and a variety of blooming nectar plants that monarchs regularly frequent. Before forming a chrysalis, the monarch caterpillar relies on milkweed as its primary food source. Without it, the larva cannot develop into a butterfly.

Monarch habitats are threatened by activities such as mowing, spraying, or grading. If listed and without proper permitting, any damage to monarch habitat as a result of these activities is in direct violation of the Endangered Species Act. Entities in violation of the Endangered Species Act may be fined and unable to continue their project work until proper permitting has been processed and approved.

Morrison County puts conservation measures in place.

WSB recognizes the importance of maintaining, improving and creating a viable habitat. Our Natural Resources team recently partnered with the Morrison County Highway Department to help them determine which segments of right of way require conservation measures. As part of the conservation study, our environmental scientists will calculate and analyze the total acreage of right of way and provide recommendations on conservation best practices (as indicated per the CCAA) such as guidelines for mowing. The CCAA requires each County transportation group to implement conservation measures on five percent of the total right of way area. An approved list of management practices is covered in the agreement for communities to review.

The CCAA program is open for enrollment until the effective listing date (anticipated as December 2021 or January 2022). Members can apply for the program and receive coverage before the ruling is made. Interested entities can only join the CCAA prior to the listing date.

By maintaining, improving and creating a safe habitat, monarchs will have the environment they need to survive and thrive for generations to come.

To learn more about the CCAA and how to enroll, visit their website.

Using 4D/5D to Mitigate Risk and Identify Project Opportunity

By Kelsey Peterson, Graduate Engineer, WSB

4D/5D modeling is intended to improve the accuracy and efficiency of projects. It has applications throughout the project life-cycle, from preliminary design to project close-out with the contractor. Learn more about some of the ways incorporating into your project and improve your projects overall success.

4D models help mitigate project risk by visualizing project conflicts that are not easily identified in traditional Gantt style bar charts. A 3D model linked to a project schedule provides the project team the opportunity to identify and mitigate project staging, utility, and discipline conflicts by providing a visual of how construction will play out as a function of time. It also provides a visual of project opportunities, allowing the project team to reschedule activities that may be better sequenced to reduce construction delays and cost, as well as redesign the 3D model to include missing design elements that would otherwise delay construction. Project time and cost savings are the direct result of using the 4D model to identify and mitigate project risks early on in construction.

The 4D/5D models provide a level of transparency that encourages coordination between project team members, creating team accountability through clear vision of project construction. The 4D/5D model is used to bring project conflicts to the surface and create the opportunity for project team members (owner, contractor, engineer, and project stakeholders) to resolve challenges in a collaborative environment.

4D/5D modeling enhances project coordination by allowing new project team members and stakeholders be brought up to speed quickly on the design and staging of the project. This greatly enhances project communication relative to the use of a traditional Gantt style activity chart. It also provides the opportunity for developing staff to become familiar with a project that may, historically, have been easier for a more senior staff member to visualize. The 4D/5D model allows the project team to develop and review a safety plan visually and highlight construction activities where accidents and risks can be reduced prior to the activity occurring on the project.

By incorporating 4D/5D modeling, your projects will run more smoothly and efficiently. It allows you to mitigate risk though the application of a timeline to the overall plan creating greater vision and improve efficiency by encouraging team work and increasing overall project vision. Contact us for more information how modeling can be applied to your projects.