Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Enforcement

Guidance: Using and Issuing Superfund Section 106(a) Administrative Orders

Memorandum addresses the Agency's use of administrative orders under section 106(a) of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, commonly referred to as Superfund). The administrative enforcement authority is an important component of the Agency's enforcement program authorized under CERCLA. Guidance was developed to assist the regional offices in developing and maintaining an effective CERCLA administrative enforcement program. Issued 9/8/1983.

A portion of this guidance was superseded in part by the 3/7/90 guidance on CERCLA 106(a) unilateral administrative order (UAO) for remedial design/remedial action (RD/RA).

  • Guidance Memorandum on Use and Issuance of Administrative Orders under Section 106(a) of CERCLA (pdf) (906.33 KB)

Enforcement

  • Enforcement Basics
  • National Enforcement and Compliance Initiatives
    • Mitigating Climate Change
    • Addressing Exposure to PFAS
    • Protecting Communities from Coal Ash Contamination
    • Reducing Air Toxics in Overburdened Communities
    • Increasing Compliance with Drinking Water Standards
    • Chemical Accident Risk Reduction
  • Air Enforcement
  • Water Enforcement
  • Waste, Chemical and Cleanup Enforcement
  • Criminal Enforcement
  • Enforcement at Federal Facilities
  • Data and Results
  • Policy, Guidance and Publications
Enforcement: Contact Us
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on July 26, 2024
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.