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About EPA

About the Office of Chemical Safety and Pollution Prevention (OCSPP)

What We Do

Using sound science as a compass, OCSPP’s mission is to protect you, your family, and the environment from potential risks from pesticides and toxic chemicals. Through innovative partnerships and collaboration, we also work to prevent pollution before it begins. This reduces waste, saves energy and natural resources, and leaves our homes, schools and workplaces cleaner and safer. OCSPP implements the:

Documents Related to Our Mission


Alexandra Dapolito Dunn, Assistant Administrator
Nancy B. Beck, Principal Deputy Assistant Administrator
David Fischer, Deputy Assistant Administrator 
Lynn Dekleva, Associate Assistant Administrator for New Chemicals
Rick Keigwin, Acting Deputy Assistant Administrator
Carol Ann Siciliano, Associate Assistant Administrator
Tom Tyler, Chief of Staff
The Office of Chemical Safety and Pollution Prevention includes:

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Office of Pesticide Programs (OPP)

What We Do

OPP regulates the manufacture and use of all pesticides (including insecticides, herbicides, rodenticides, disinfectants, sanitizers and more) in the United States and establishes maximum levels for pesticide residues in food, thereby safeguarding the nation's food supply. EPA has expanded public access to information about risk assessment and risk management actions to help increase transparency of decision making and facilitate consultation with the public and affected stakeholders.

In addition to our regulatory functions, we provide information and coordinate with partners and stakeholders on issues ranging from worker protection to misuse of pesticides. We participate in a variety of partnerships related to pesticide use, including the Pesticide Environmental Stewardship Program, a voluntary private and public partnership dedicated to reducing pesticide use and risk, and Integrated Pest Management in Schools.

OPP implements:

Learn more about our pesticides program, including general information on pesticides, how to control pests, health and safety issues (including poison prevention), environmental effects, and pesticide regulations.

Programs and projects managed by the Office of Pesticide Programs

Mail code: 7501P | EPA mailing addresses
Location: EPA Headquarters at Potomac Yard South in Arlington, Virginia | Visiting OPP

OPP Organization

Edward Messina, Acting Director

  • Phone: 703-347-0209

Michael Goodis, Acting Deputy Director of Programs

  • Phone: 703-308-8157

Arnold Layne, Deputy Director for Management

  • Phone: 202-564-0758

Antimicrobials Division

  • Anita Pease, Director
    • Phone: 703-305-0392

Biological and Economic Analysis Division

  • Kimberly Nesci, Acting Director
    • Phone: 703-308-8200

Biopesticides and Pollution Prevention

  • Charles Smith, Acting Director
    • Phone: 703-308-8712

Environmental Fate and Effects Division

  • Jan Matuszko, Acting Director
    • Phone: 703-347-8259

Health Effects Division

  • Dana Vogel, Division Director
    • Phone: 703-305-0874

Pesticide Re-evaluation Division

  • Elissa Reaves, Acting Division Director
    • Phone: 703-305-0312

Registration Division

  • Marietta Echeverria, Acting Division Director
    • Phone: 703-305-8578

Further details about OPP's current management team and structure are found in EPA's Pesticide Contacts web area.

Office of Pollution Prevention and Toxics (OPPT)

What We Do

OPPT manages programs under the Toxic Substances Control Act and the Pollution Prevention Act. Under these laws, EPA evaluates new and existing chemicals and their risks, and finds ways to prevent or reduce pollution before it gets into the environment. We also manage a variety of environmental stewardship programs that encourage companies to reduce and prevent pollution. OPPT implements the Toxic Substances Control Act (TSCA), the Pollution Prevention Act and Section 313 of the Emergency Planning and Community Right-to-Know Act

Information on chemicals and their regulation under TSCA, ways to prevent and reduce pollution, and on safer chemicals and their use.

Programs and projects managed by the Office of Pollution Prevention and Toxics

Mail code: 7401M | EPA mailing addresses
Location: EPA Headquarters at Washington, D.C. Federal Triangle campus

OPPT Organization

Yvette T. Collazo, Director
  • Phone: (202) 564-3810
Tala Henry, Deputy Director for Programs
  • Phone: (202) 564-3810
Mark Hartman, Deputy Director for Management
  • Phone: (202) 564-3810

Data Gathering and Analysis Division

  • David Widawsky, Director
    • Phone: (202) 564-8770

Existing Chemicals Risk Assessment Division

  • Andrew Gillespie, Acting Director

Existing Chemicals Risk Management Division

  • Brian Symmes, Acting Director
    • Phone: (202) 564-8800

New Chemicals Division

  • Madison Le, Director
    • Phone: (202) 566-5754

Project Mangement and Operations Division

  • Pamela Myrick, Director
    • Phone: (202) 564-8170

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Office of Program Support (OPS)

What We Do

OPS is responsible for supporting OCSPP administrative programs, including budget, financial management, human resources, information technology, information management, and correspondence management, and is responsible for providing program support services related to rulemaking, peer review, international and intergovernmental relations, and communications.

Programs and projects managed by the Office of Program Support

Mail code: 7201M | EPA mailing addresses
Location: EPA Headquarters at Washington, D.C. Federal Triangle campus

OPS Organization

Carol Ann Siciliano, Director
  • Phone: 202-564-5489
Hayley Hughes, DrPH, MPH, CSP, Deputy Director
  • Phone: 202-564-1116

Information Technology and Resources Management Division 

  • Delores Barber, Director
    • Phone: 703-347-8741

Mission Support Division 

  • Jackie Mosby, Director
    • Phone: 703-308-2226

Communication Services and Information Division 

  • Lynn Vendinello, Director
    • Phone: 202-566-0514

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