Richard Burke

US Ecology, Inc. engages in the provision of environmental services to commercial and government entities. It operates through the following segments: Waste Solutions, Field Services, and Energy Waste. The Waste Solutions segment includes a range of specialty material management services including transportation, recycling, treatment and disposal of hazardous, non-hazardous, E&P and radioactive waste at company-owned landfill, wastewater, deep-well injection, and other treatment facilities. The Field Services segment offers specialty field services and total waste management solutions to commercial and industrial facilities and to government entities through 10-day transfer facilities and at customer sites, both domestic, and international. The Energy Waste segment provides safe and compliant energy waste management and critical support services to up-stream oil and gas customers in the Permian and Eagle Ford basins primarily operating in Texas. The company was founded in 1952 and is headquartered in Boise, ID.

ECP Environmental Growth Opportunities Corp. is a blank check company. It is formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was founded on October 29, 2020 and is headquartered in Summit, NJ.

Sierra Lake Acquisition Corp. operates as a blank check company. It was formed for the purpose of effectuating a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, or other similar business combination with one or more businesses. The company was founded on January 26, 2021 and is headquartered in Chicago, IL.

Veolia North America LLC provides environmental solutions. It offers zero waste to landfill, recycling of other qualified materials, turnkey treatment, waste streams to energy, deep well injection, medical disposal, hazardous waste stabilization and landfill, wastewater treatment, industrial cleaning, and remediation services. The company is headquartered in Lombard, IL.

Energy Capital Partners Management LP (ECP) is a private equity firm founded in 2005 by Doug Kimmelman. The firm is headquartered in Summit, New Jersey with an additional office in San Diego, Fort Lauderdale, New York City, Houston and Seoul .

Biffa Plc is engaging in the provision of waste management services. It operates through the following segments: Collections, Resources and Energy, Specialist Services, and Group Business Function. The Collections segment encompasses municipal, industrial and commercial. The Resources and Energy segment is consisted of inerts, organics, recycling, and landfill gas sub-divisions. The Specialist Services includes the company shop group, hazardous waste, integrated resource management, and Biffpack. The company was founded in 1912 and is headquartered in High Wycombe, the United Kingdom.