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Insight into the Hazardous Waste Management Industry – A Profile of Clean Harbors Facilities

by David Nguyen – Staff Writer

Clean Harbors is a hazardous waste management company operating across North America. Their location in Mississauga is a hazardous waste terminal and transfer station, receiving, handling, and transporting flammable solids destined to the U.S. for incineration.  Non-flammable solids and liquid hazardous waste is sent to their facility in Lambton, Ontario.  The Lambton facility includes a hazardous waste landfill and a liquid hazardous waste incinerator.

Clean Harbors coordinates hazardous waste management solutions across the Canada-U.S. border.  It is makes business sense for the company to transport flammable solids that are hazardous to its U.S. incinerator instead of having a facility in Canada.  “Liquid injection incinerators are a lot cheaper,” says Mike Parker, Vice President, Canadian Environmental Compliance. “There really isn’t a strong enough market to support [hazardous solid incineration] in Canada.”

Mississauga Site Activities

Carriers bring the hazardous waste to the transfer station, where the manifests and documentation are reviewed to ensure that the facility is permitted to receive the material. Receiving times are typically planned ahead of time to prevent surges of shipments on site. Once off loaded, the waste is sampled to confirm the material profile noted in the manifest and then staged for further processing. The entire staging area is built over sealed drains leading to a blind sump to prevent any spills from leaving the site. “All the liquids from our sumps, even if it’s just rain water… get put into tanks and go down for incineration,” says Parker.

Every drum the facility receives has its contents verified, sampled, and tested. Samples are analyzed for PCBs, pH, ignitability/ flashpoint, sulfide, chloride, oxidation, cyanide, and water reactivity in order to get a profile for the waste, after which a code is attached to the drum to indicate its destination and disposal.

Staging Area (photo by David Nguyen)

This information is stored in their management system that tracks the inventory at their various facilities, including the shipping information and profiles of all items. The information is removed for approval to be received on site. The system also tracks the manifests for the generator, carrier, receiver, and the ministry, internal inspections, and monthly reports to be sent to the ministry.

After sorting and sampling, the waste is safely sorted into various streams for consolidation, bulking, or blending.

“It has to be in the same waste class to mix and match. We can’t mix something flammable with something non-flammable,” says Parker.

“Even if they are in the same waste class, we take samples from each drum, mix it together, and if nothing happens, we can do it” says Erica Carabott, Facility Compliance Manager.

Liquid waste is bulked in tank farms until there is enough to fill a taker truck to be sent to Lambton for incineration. Solid waste is loaded into pits where the material is shredded up, bulked, and mixed with a solidifying agent to take up any free liquids in the solid waste streams.

Lambton Facility Activities 

Many of the materials received at the Mississauga Transfer station are transported to the Clean Harbors Lambton facility offers services including waste neutralization, incineration of hazardous waste, inorganic pre-treatment of hazardous waste, thermal desorption of solid and sludge, and landfill disposal of hazardous waste.

Liquid waste is blended in a controlled neutralization process at the acid and alkali plant before being fed to the incinerator. The liquid waste injection incinerator operates 24 hours a day, 7 days a week, consisting of a fix unit incinerator, a semi-dry spray dryer absorber, and a four-compartment baghouse. The site capacity is about 100 000 tonnes per year and can process pumpable material that does not contain PCBs, pathogens, radioactives, and cylinders.

Lambton Incinerator (Photo Credit: Clean Harbors)

The landfill is situated in natural clay, and accepts a variety of hazardous waste excluding explosives, PCBs, radioactive, pathological wastes, or compressed gasses. Due to the Land Disposal Restriction prohibiting the disposal of untreated hazardous waste on land, Clean Harbors has an inorganic solid pre-treatment processing plant which mixes inorganic waste (primarily metal bearing solids) with reagents to prevent the metals from becoming leachable.

Furthermore, a thermal desorption unit is used to condense and recover water and organics from organic solid waste. The waste is fed into a kiln that heats the waste to 400-450 degrees Celsius to strip the organics from the waste. The vapours are condensed to remove liquid organics during the process, with the remaining emissions vented to the incinerator. The residual solids are then tested for any remaining organics or metals, and then disposed of in the hazardous landfill on site.

“You can understand why it takes a lot of money to treat the stuff in the landfill. It cooks it for about a half hour – that’s a lot of heat and a lot of money” says Parker. “With testing at the front and testing at the end,” adds Carabott .

Clean Harbor’s Lambton Hazardous Waste Landfill (Courtesy: Clean Harbors)

These facilities and processes allow Clean Harbors to work with their clients to develop cost effective solutions to handling and disposing of hazardous waste materials throughout the Great Lakes Basin in both Canada and the United States. In addition, Clean Harbors conducts regular outreach programs with the local community regarding the safe operations and reporting conducted at the Lambton facility.

Special thanks to Mike Parker and Erica Carabott for taking the time to speak with me and show me around the Mississauga Transfer station.

Unsafe Levels of Contamination found in Edmonton Neighbourhood

As reported in the Edmonton Journal, unsafe levels of hazardous chemicals were found in unoccupied land near the property that was previously occupied by a wood treatment plant site.  However, the analytical results from soil samples taken from residential properties in the vicinity of the plant found no hazardous chemicals in the top level of soil.

An Alberta Health official recently stated that soil testing has been completed in the Verte-Homesteader community — located near the former Domtar wood treatment facility.

Workers drill core samples in a contaminated parcel of land at the old wood treatment plant site in Edmonton, June 28, 2018. (Photo Credit: Kaiser/Postmedia)

“The results show no issues in the surface soil of any of the homeowners’ properties, but there were four areas of unoccupied land in the southeast corner of the neighbourhood where chemicals were found above health guidelines and that area is now being fenced off,” spokesman Cam Traynor said in an email.

A map showed two tests in the soon-to-be-fenced area exceeded human health guidelines for dioxins and furans.

In the spring, about 140 homeowners near the site of the former wood treatment plant at 44 Street and Yellowhead Trail were warned soil and groundwater in the area was contaminated with a list of potentially cancer-causing substances.

Officials said no contaminants were known to be in residential areas.

From 1924 to 1987, the land was the site of a plant in which toxic chemicals were used to treat railroad ties, poles, posts and lumber. Parts of the property are now a housing development.

The site’s current owners and developers, 1510837 Alberta Ltd. and Cherokee Canada Inc., were ordered to build a fence around the contaminated land to reduce potential health risks earlier this year.  Cherokee Canada did not immediately respond to a request from the Edmonton Journal.

Alberta Environment and Parks also directed the companies, including former owner Domtar, to take environmental samples and create plans to remove contaminants and conduct human health risk assessments. The orders also affected a greenbelt southeast of the site currently owned by the City of Edmonton.

The recently completed testing covered the top one-third of a metre of soil. Traynor said deeper soil testing in the broader area is ongoing. That work, along with a human health risk assessment, is expected to be completed this fall.

Couple admits illegally storing 4,500 tons of hazardous waste in warehouse

As reported in the St. Louis Post-Dispatch, a husband and wife recently plead guilty to a U.S. federal charge and admitted improperly transporting 4,500 tons of hazardous waste and storing it in a warehouse near St. Louis, Missouri.

The couple, both in their 60’s, pleaded guilty in U.S. District Court in St. Louis to a misdemeanor charge of placing someone in danger of death or serious bodily injury from a hazardous waste.

Green Materials LLC facility in Missouri (Photo Credit: Robert Patrick, Post Dispatch)

Their company, Missouri Green Materials LLC, Missouri Green Materials LLC stored a large quantity of spent sandblasting materials inside a warehouse located in the town of Berger, approximately 70 miles west of St. Louis.  They couple admitted that they arranged for the transport and storage of the hazardous waste from Mississippi, and failed to tell both the trucking companies that hauled the waste and the personnel that unloaded it of the danger.  Their storage facility was not properly permitted was not registered as a permitted hazardous waste storage or recycling facility.

The sandblasting waste materials are considered to be hazardous because they contain amounts of certain metals, including cadmium, that exceed regulatory limits established by the Missouri Department of Natural Resources and the U.S. Environmental Protection Agency (U.S. EPA).

The materials were stored in a warehouse in a flood plain for more than four years.  There are no indications of any release of the materials from the warehouse.

The couple have agreed to pay $1.5 million to the U.S. EPA for the costs of dealing with the waste. They could face probation or a sentence of six months behind bars for the crime under federal sentencing guidelines.

The source of the sandblasting waste was for a site in Mississippi.  An Ohio company, U.S. Technology Corp had been buried the waste.  The company was repeatedly ordered by regulators to remove it.

In 2016, the U.S. EPA and U.S. Technology signed a consent agreement whereby the company agreed to remove the waste from Green Material’s facility in Missouri and test the site for soil contamination.  According to prosecutors, this work was never performed.

U.S. Technology and president Raymond Williams, 71, both pleaded not guilty in the case. A hearing has been scheduled to change both pleas later in June.

Some sandblasting waste is classified as hazardous

All Hazards Waste Management Planning (WMP) Tool

The U.S. EPA recommends that communities have a Waste Management Plan (WMP) that addresses the management of waste generated by all hazards, particularly from homeland security incidents ranging from natural disasters and animal disease outbreaks to chemical spills and nuclear incidents to terrorist attacks involving conventional, chemical, radiological, or biological agents.

This tool is intended to assist emergency managers and planners in the public and private sectors in creating or updating a comprehensive plan for managing waste generated from man-made and natural disasters. The tool walks the user through the process of developing and implementing a plan. The tool also contains many resources that can be used as aids to various aspects of the planning process. View and use at https://wasteplan.epa.gov.

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