Case Study

Glenview S&G Landfill

Landfill Closure

  • Sandbanks LLC
  • Sandbanks LLC
  • Commercial
  • Chelmsford, MA

Project Overview

The Glenview site was a 32-acre legacy Brownfield site with an uncapped, non-compliant 17-acre inactive landfill, in a highly visible, densely populated and heavily traveled retail / residential corridor of Chelmsford, MA. In 1997, the area, once an aggregate quarry, became a soil landfill in response to the need for soil disposal on projects such as the I-93 Big Dig.

After placing a significant amount of soil and partially capping the site, the landfill was abandoned by the owner, leaving behind an environmental hazard and a slew of back taxes. The improperly constructed cap eroded, became torn, and was subject to a fire. Keeping the landfill in this state was a continued risk to the surrounding community. Since the existing cap could not be salvaged, a new cap needed to be installed in accordance with state regulations. The current owner, Sandbanks, LLC, was looking for a solution to properly close the site while also generating the necessary revenue to pay for the expensive cap. Charter proposed a project concept which included a strong technical solution, the proper regulatory framework for project approvals, and had gained a consensus from stakeholders, which included Local/State Government, State Regulators, and Community and Property Owners. At the center of the concept was an innovative economic model which involved importing, grading, and shaping materials to prep the site for final closure while also generating the necessary revenue to fund the cap construction.

To implement this Environmental Public-Private Partnership (EP3) strategy, Charter hired Langdon Environmental, LLC to prepare the design and assist with the permitting process. The team worked closely with the Massachusetts Department of Environmental Protection (MassDEP) and the Town of Chelmsford to acquire the mandatory permits and crucial public comments on the project. By working with regulatory agencies and consultants, Charter stabilized the existing site drainage features and existing partial cap, imported soils for grading and shaping, installed a new multi-layer cap, and most importantly, resolved a $12.5M environmental liability at no cost to the owner.

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  • Glenview Landfill after grass has been planted
  • flat view of tarps on Glenview Landfill
  • Overhead view of Glenview Landfill

Commitment to Being a Partner of Choice

"Chris Ryan [Charter’s Project Manager] was instrumental in overseeing and achieving the successful consolidation, capping, and closure of this large-scale former landfill area. His continuous communication with regulatory agencies and major stakeholders allowed for the successful import of 837,000 tons of soils without a single complaint from the surrounding community or incident on‐site. Chris was responsible for managing the transition of a potential environmental liability into a properly capped area with opportunity for future re‐use. I would highly recommend Chris and Charter for future work."

Bruce Haskell, Principal, Langdon Environmental LLC, Glenview Landfill Design Engineer
Glenview project site overhead
Glenview S&G Landfill

32 Acre legacy Brownfield site with a 17 acre landfill

Glenview Infographic 340 projects

Supported over 340 projects by taking in shaping and grading material

Location

Glenview Landfill is located just up the street from a busy Chelmsford town center with many local businesses, high traffic volume, and is surrounded by residents. One of the biggest concerns raised by the public was traffic congestion from truck deliveries on an already bustling local roadway. By performing traffic studies and working with the Town of Chelmsford, Charter developed a traffic route that significantly reduced traffic impacts. To help mitigate community concerns, the project team held several public forums and Charter managed a website dedicated to the project which provided updates and additional resources. A wheel wash was also used to help with dust control and to minimize any off-site tracking of materials into the surrounding community. Throughout the entire project, with over 24,800 truckloads at an average of 45 loads/operating day and over 9,800 hours worked, there were no traffic incidents or complaints and zero safety incidents.

Innovative Solution backed by Comprehensive Due Diligence

Charter’s ability to leverage its soil management expertise allowed us to provide an alternative delivery method, resulting in a financially and environmentally beneficial solution for all stakeholders. Comprehensive due diligence and initial project screening helped us develop a technical solution and design an end condition that directly addressed not only the environmental concerns of the site but the financial concerns as well. From the start, Charter had an in-depth understanding of the underlying environmental liabilities relative to the groundwater, soil and the extent of waste on site. We developed a technical solution that was based on importing and placing approved regulated materials (soils, sediments, street sweepings, catch basin cleanings, etc.) for use as grading and shaping materials as subgrade to the installation of a state of the art HDPE cap system. The end condition was designed to incorporate multiple options for placing the property back into productive reuse and redevelopment.

A major component of successfully implementing the project was creating an innovative economic model to relieve the financial burden created by back taxes when the site was previously abandoned. Charter structured a creative business model that utilized tip fees from the imported grading and shaping materials to fund site characterization, design, engineering, permitting, construction and repayment of the more than $500,000 in taxes owed as well as funding long term operations and maintenance (O&M). By using Charter capital and project generated revenue stream, we funded the design, permitting, remediation / construction, payment of all real estate taxes (in arrears and current). Through executing this model, the environmental liability was resolved at no cost to the private landowner or the state/local government. The property was transformed from a long standing, complex and unresolved environmental hazard to a secure and regulatory compliant site well positioned for redevelopment.

Glenview project site overhead
Glenview Infographic 9,842 hours

9,842 hours worked with zero incidents and zero lost time

Means & Methods

To prep the site so it could start receiving soils, Charter set up erosion controls and stormwater diversion berms, installed temporary access roads, and purchased and installed wheel wash racks and a truck scale. With the site properly set up, between June 2015 and September 2016, Charter received over 837,000 tons of soils from more than 340 construction projects throughout eastern Massachusetts, raising the landfill approximately 50’. To control stormwater runoff, 7,500 LF of new stormwater swales and down chutes were created and a three-bay detention basin was installed. This piece was vital to the success of the project because the primary purpose of the final cap is to; minimize stormwater infiltration and reduce the potential for leachate generation; prevent erosion of the landfill surface; and provide controls for stormwater runoff. The multi-layer cap also eliminated wind and volatized gas impacts to air quality, control the migration of landfill gases, and isolated wastes from the environment, eliminating the possibility of direct contact. The capping installation constructed included:

  • 6” bedding layer (approx. 16,500 CY) installed over the imported soils
  • 18 acres of HDPE Liner
  • 12” Sand Drainage Layer (approx. 33,000 CY)
  • 8” Topsoil (approx. 27,500 CY)
  • 22 acres of seeding

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