RNC Status Codes (2018-12-10)

RNC Detection - RNC Resolution Codes (2020-12-30)

EPA Region 4 ICIS-NPDES Registration Instructions and Forms - Version 24.1 (Updated November 14, 2024)

EPA NPDES eRule Implementation: Roadmap for Updating the ICIS Data Submission Service for Phase 2 Data

Entering a Notice of Determination (NOD) as a formal enforcement action

ICIS Web Technical Specifications - Program Reports, RAD WebRIT, Reissuance, Related Activities, Reports Universes, RNC

Frequency of Analysis (2024-10-10)

Guidance for Reporting Imported HFC Actions in ICIS

ICIS NPDES EDT (batch) Resources

Temporarily Closed vs. Permanently Closed Operating Status for Clean Air Act (CAA) Facilities

How to Download EDT Batch Audit Reports from BI Reports

Updating and Deleting NPDES Permit Addresses via EDT

Conducting MY and EOY NEI Data Quality Review (4/1/2014) (Presentation)

ICIS Web Technical Specifications - Enforcement

Mapping a Title V source that is subject to NSPS TTTT. Distinction between 'non-major' and 'major' TTTT.

Calculating Percent Exceedance calculated

ICIS Web Technical Specifications - Expected DMR Schedule, Facilities, FRS, Compliance Monitoring, Security and Navigation

VCMA measure calculated for enforcement cases securing investigation work (2003)

Small Municipality definition

Public NPDES Permit Data