The Plastics Industry Association (Plastics) has announced two personnel moves, naming Charlotte Dreizen director, sustainability and environment, and Mónica Mancilla Cooke senior director, human resources, effective immediately.

As a member of the organization’s sustainability team in the newly created role, Dreizen will conduct direct oversight of activities that encompass Operation Clean Sweep (OCS), a program founded by Plastics and operated in partnership with the American Chemistry Council’s Plastics Division, and also will head Plastics' educational efforts and external efforts that prioritize the reduction of plastics in the environment.
OCS gives companies that handle resin the opportunity to commit to protocols designed to help reach zero resin loss in operations to the environment.
“I couldn’t be more thrilled for the opportunity to join Plastics and to lead Operation Clean Sweep,” Dreizen says. “Achieving zero resin loss is a mission-critical sustainability goal and I’m excited to support our membership throughout the supply chain in ensuring that no plastic pellet, flake or powder enters the environment."
Dreizen’s background includes experience supporting circular economy and net-zero carbon initiatives. Before joining Plastics, she led the American Institute of Architects’ 2030 Commitment, which measured progress toward carbon neutrality by tracking data for 3.5 billion gross square feet of construction for more than 1,100 companies nationwide.
She also managed recycling programs, policy and education for the Washington Department of Public Works Office of Waste Diversion as well as worked at the Sustainable Packaging Coalition.

“In Charlotte we’ve found someone with hands-on experience in helping companies achieve real sustainability goals,” Plastics President and CEO Matt Seaholm says. “Charlotte stands out among experts with theories on sustainability and is already an invaluable asset to our members. Her public presence in providing guidance and tools to better understand the challenges with recycling is admired by professionals across our industry.”
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Cooke has a human resources background that comprises roles in a variety of organizations in Washington, including work with the Information Technology Industry Council, the American Petroleum Institute and the International Republican Institute.
“We’re building a larger, top-flight team at Plastics—it takes someone with Mónica’s HR expertise to help us ensure the success of our professional environment,” Seaholm says. “Mónica brings a wealth of compliance, talent recruitment and development experience that will help PLASTICS continue to grow and thrive.”
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