Industry Market Signature Projects
Statewide (Michigan) PFOA and PFOS
Landfill Leachate Study In February of 2018, EGLE launched the Industrial Pretreatment Program (IPP) PFAS Initiative to reduce and eliminate discharges of certain PFAS from industrial sources that may pass through wastewater treatment plants. In response, the Michigan Waste and Recycling Association (MWRA) contracted with NTH to conduct a collective study of leachate from landfills in Michigan. NTH’s report for the Michigan Waste and Recycling Association is now being used as a model nationwide on studying impacts of PFOA and PFOS in landfill leachate on WWRF influent. 
Fairlane Green Redevelopment Green Development of a Closed Landfill NTH was retained to assist in the Brownfield redevelopment of the site providing regulatory, environmental and geotechnical engineering services for the project. The development, named Fairlane Green, was developed in phases, the first of which opened in 2005. The NTH Project Team identified three major issues related to the reuse of this Brownfield site. Each of these issues were addressed during design and construction: reducing post-construction settlements, maintaining slope stability, and preventing methane gas migration into the buildings. Additionally, by leveraging our multi-disciplinary expertise and historical site knowledge, NTH has continued to assist various stakeholders with ongoing phases of development. In recent years, these services have included: storm water management, environmental due diligence, geotechnical investigations, and construction quality assurance (CQA). 
Marquette County Landfill
PFAS Assessment PFAS are present in the leachate of every landfill. Although not covered in the landfill’s current NPDES permit for discharge of treated leachate, it is likely that PFAS will be included in the landfill’s next NPDES permit. To proactively address concentrations of PFAS and other pollutants in their leachate, the Marquette County Solid Waste Management Authority retained NTH to evaluate the landfill’s treatment system and its discharge to identify effective cost competitive method to meet likely PFAS permit limits. NTH is currently working on this project. |
General Motors Roofing Program Roof Condition Assessment / Roof Replacement Program NTH professionals performed comprehensive evaluations of all individual roof sections (up to 200) on each General Motors manufacturing facility. During each on-site evaluation, NTH also reviewed available plans, files, and historical data; performed an interior building survey; and discussed roof leakage with on-site personnel. NTH presented reports of the findings for each facility, including color-coded and scaled roof plan drawings, and complete inventories of roof defects and distresses. NTH also included serviceability forecasts for each roof area. 
Perfection Industries
Remedial Investigation, Design and Implementation Perfection Industries experienced a fire at their facility. When the cleanup was completed, agency regulators were concerned that there was a potential for the release of hazardous waste. After the hazardous waste was identified, the U.S. EPA stepped in as the prime regulatory agency. NTH was retained to evaluate if a release had occurred, and design and implement a remedial solution. NTH was able to work closely with the U.S. EPA to identify remediation strategy to meet the regulatory requirements, and also meet the client’s needs for cost containment on this sensitive project. 
Huron Monofill PFAS Compliance
Facility Design & Post-Closure Due Care The Huron Monofill is a closed incinerator ash landfill located on approximately 34 acres is regulated under Part 115 of Michigan’s Act 451, Natural Resources and Environmental Protection Act. NTH’s project team has provided the post-closure due care services for the Huron Monofill since final closure in 2005. Through close coordination with the different stakeholders, the site continues to meet its post-closure obligations consistent with environmental regulations. |