CDR Staff

Staff edited copy for Construction & Demolition Recycling magazine.


A new force in town

Wood Recycling

LEDR Recycling’s new mixed C&D recycling system is helping the St. Louis-area firm further process its wood and other materials for higher-quality end products.

May 12, 2015

LEDR Recycling (Landfill-Environmental-Diversion-Reclamation), St. Charles, Missouri, has opened an indoor material recovery facility (MRF) featuring a customized construction and demolition (C&D) recycling system.

John Davis, president and managing partner of LEDR Recycling, opened the 35,000-square-foot facility close to St. Louis knowing the city’s metropolitan area continues to grow as the operating windows for regional landfills close.

According LEDR’s website,, the new C&D MRF is strategically located in the heart of one of the fastest growing parts of the St. Louis metropolitan area.

Continental Biomass Industries (CBI), Newton, New Hampshire, designed, manufactured and shipped the C&D recycling center out of its Newton headquarters. The system, which began full operations in April, is expected to process more than 50 tons of throughput an hour and will accept a variety of materials such as wood, concrete, drywall, plastic, metal, cardboard and aggregates. The facility plans to operate eight to 10 hours per day, five to six days per week.

“The durability of this system compared to others across the industry is what caught my eye,” Davis says of the company’s new C&D recycling center. “It’s such a simple system while others look like a giant mousetrap. Its simplicity is going to make everything more efficient, even on the maintenance side of things.”

Pick of the litter

A specialized CBI Magnum Force 5400 Downswing grinder will become part of the processing system at the end of June. LEDR Recycling says it is installing the CBI 5400 horizontal grinder as it is downsizing all of its handpicked wood to produce a premium end product that opens up multiple markets.

Grinding the processed material allows LEDR Recycling to maximize the pay load for transportation as well. Bulky materials such as half sheets of plywood and two-by-fours can now be consolidated and loaded into a trailer at full capacity. The horizontal feed of the CBI 5400 allows longer pieces to be processed more quickly.

Trucks dropping off loads of recoverable C&D within the St. Louis area typically wait at least an hour before a recycling facility can accept their materials for processing, according to Davis. LEDR Recycling’s strategic location gives trucks an opportunity to drop their C&D loads off at a 3-acre facility that is less 25 miles from downtown St. Louis.


Fuel for thought

Wood is an end market that affects construction and demolition (C&D) recyclers differently from region to region. Unlike secondary commodities like metals, wood is less dependent on the global economy and driven more by regional end markets and regulations surrounding its use in fuel applications.

ReEnergy Holdings LLC, based in Latham, New York, processes C&D wood at its C&D recycling facilities for the company’s fuel facilities in the Northeast and in North Carolina. During C&D World, which was held in late March in Nashville, Tennessee, Michael Buckley, ReEnergy’s regional director of asset management, described the company’s footprint and the issues it faces in the states it operates.

ReEnergy has both a renewable energy sector and waste services sector. The company’s eight biomass facilities generate 300 megawatts of capacity; and its C&D recycling facilities in Maine, Massachusetts and New Hampshire can process 1 million tons of material per year and processed 700,000 tons in 2014.

Connecticut, Maine and New York all have specifications for fuel that include requirements for the amount of chromated-copper-arsenate (CCA) treated wood, plastic, nonwood, noncombustible and fines are allowed. Connecticut and New York regulate the wood through a chemical analysis, while Maine requires a physical characterization of CCA wood.

Connecticut, Maine and New York allow some level of nonwood components in the fuel. In New York, nonwood, including plastic, can only make up 0.5 percent of the blend. Connecticut and Maine manage the percentage of fines, both states requiring the fuel be made up of less than 10 percent 1/4-inch-minus fines. Buckley described Connecticut as tougher than other states because it requires a weekly inspection on all suppliers, while New York requires monthly tests on suppliers to make sure the fuel they are producing meets the specifications.

Buckley explained that in New York he sends out samples from suppliers, and if it passes, the facility receives Renewable Energy Credits (RECs). “Quality control and quality insurance is very important in New York,” Buckley stressed.

Buckley has been procuring wood for ReEnergy since 2013. Chemical analysis also is conducted in three areas: arsenic, lead and chlorine.

“Arsenic is a really tough mark to hit,” Buckley said. CCA removal programs of our suppliers have to be steady. Connecticut is the strictest in its requirements for arsenic. Given that arsenic is a natural element in natural harvested wood, Buckley said it is a difficult spec to hit. Maine, on the other hand, uses a blended fuel so the biomass facility can use both harvested wood and C&D wood and average it out to eliminate the percentage of arsenic. Other states don’t allow blending and require the types of wood to be burned separately.

When Buckley first began procuring wood for ReEnergy he said he did weekly testing on all the suppliers’ material as there was “a lot riding on the results.” He said he tested for arsenic and lead on a weekly basis until he was comfortable with the outcomes. Following the tests, ReEnergy developed an educational document on what to look for in the wood. ReEnergy also would provide suppliers with the test results.

“Typically, suppliers will be more than happy to accommodate,” Buckley said, noting there aren’t many markets available. “Our suppliers are more than happy to work with us,” he said.

C&D World was March 28-31 at the Music City Center in Nashville.


“It’s a major timesaver for those transporting the C&D that needs to be processed,” says CBI’s Stationary Systems Manager Matt Skinner. “Now more recoverable materials can be processed in a shorter amount of time and LEDR Recycling can get the most out of its sorted recyclable items.”

Davis has more than 35 years of experience in the heavy construction and highway construction fields and has focused on recycling concrete aggregate the past four years. As members of the Construction & Demolition Recycling Association (CDRA), Aurora, Illinois, both CBI and Davis say they understand why the recycling of recoverable C&D materials is important. LEDR Recycling’s stationary system is just the latest in a long line of stationary systems CBI has custom designed for the past 15-plus years.

“Every system is different but there’s always one common goal with each design and that’s to figure out how to give our customer the very best and most efficient system possible,” says Skinner.

Davis entertained offers from other suitors but ultimately decided that CBI was the best fit for his operation.

“We’re going to recycle every possible item we can,” says Davis. “We’ll be sure to sort all of the wood, metal, concrete, stone, dirt, plastics and cardboard we receive. It’s a great industry to work in because it’s the right thing to do for the environment. Everybody works to recycle more efficiently while making sure their plants are also operating as efficiently as possible.”


Gaining a share in wood processing

In late April, the Terex Material Processing division of Terex Corp., Westport, Connecticut, announced it had the acquired the equipment company Continental Biomass Industries Inc. (CBI), Newton, New Hampshire. Terex says it has significantly expanded its Terex Environmental Equipment (TEE) product line through the acquisition, which serves the wood, biomass and recycling industries.

Terex says the acquisition adds dimensions to its TEE business that would otherwise have taken years to develop. The acquisition will add customization and specialty product capabilities that enable TEE to serve even the most demanding requirements of customers worldwide, the company explains.

Kieran Hegarty, president of Terex Materials Processing, says, “Wood processing, biomass fuel production and recycling are strong and growing industries that are driven by increasing global demand for environmentally responsible solutions to waste disposal and alternative energy. We see a real opportunity to bring value to customers in these industries by providing equipment that combines the know-how of CBI and TEE with our existing materials processing expertise.”

The CBI brand will be maintained as a Terex brand within the portfolio. CBI products will serve the high-capacity, full-feature needs of recycling, wood processing and biomass customers, including custom-engineered solutions. CBI products will be represented by a direct sales force who will work in collaboration with TEE and other Terex distributors to maximize market potential.


Information in this article was provided by Continental Biomass Industries, Newton, New Hampshire.


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