The purpose of this memorandum is to supplement the Office of Enforcement and Compliance Assurance's national National Pollutant Discharge Elimination System (NPDES) guidance by incorporating the "Enforcement Response Timeline for Significant Noncompliance Violations at NPDES Major Facilities" into the Enforcement Management System by reference.

Issued May 29. 2008

• Clarification of NPDES EMS Guidance on Timely and Appropriate Response to Significant Noncompliance Violations (PDF)(3 pp, 408 K)