NPDES DMR Non-Receipt Status Search Overview

EPA's Clean Water Act National Pollutant Discharge Elimination System (NPDES) data system of record [Integrated Compliance Information System (ICIS) for NPDES data] automatically generates DMR non-receipt violations for all permittees (majors and non-majors). Discharge Monitoring Report (DMR) values not received within 31 days of the DMR form due date result in the generation of a violation code (D80 or D90). ICIS-NPDES runs a daily process to identify these DMR non-receipt violations and automatically creates violation codes for the missing DMR values with monitoring requirements (D80) and missing DMR values with effluent limits (D90).

ICIS-NPDES uses these DMR non-receipt violation codes (D80 or D90) to generate “reportable noncompliance (RNC) detection” codes [e.g., non-monthly average DMR value was 30 days overdue (= “K”), DMR monthly average value was 30 days overdue or scheduled report was 30 days overdue (= “N”)]. ICIS-NPDES uses “RNC resolution” codes to classify the resolution status of these violations (i.e., noncompliant, resolved pending, or resolved). These RNC resolution codes can be created automatically by ICIS-NPDES or be manually entered by an ICIS-NPDES user. ICIS-NPDES uses violation codes, RNC detection codes, and RNC resolution codes to create a single permit compliance status code for each permittee for each Federal Fiscal Year (FFY) Quarter. ICIS-NPDES generates this permit compliance status code approximately 2 ½ months after the quarter has ended.

This search allows the identification of DMR filers that have unresolved DMR non-receipt violations received later than 40 days after the DMR due date in ICIS-NPDES [i.e., these are facilities with DMR non-receipt Violation codes (D80 or D90) that have an unresolved RNC status code (1 or A) and contribute to a noncompliant permit status]. Although ICIS-NPDES automatically generates DMR non-receipt violation codes if values are not reported within 31 days, EPA's data sharing policy allows states a 40-day window to report DMR values to EPA's data system; therefore, DMR values reported on time to state agencies and shared with EPA within 40 days do not contribute to permit level noncompliance status.

Prior to the NPDES Electronic Reporting Rule, ECHO did not show noncompliant permit compliance status codes for non-major DMR filers in most states (the exceptions being Arkansas and Louisiana, as requested by these two states), when the noncompliance was related to DMR non-receipt violations. ECHO was changed to show the permit compliance status (based on the RNC status code) for all DMR filers for the FFY Quarter that started on 1 July 2017 and following FFY quarters. EPA made these changes to help create an accurate and nationally-consistent set of data about the NPDES program and to provide greater transparency to the public on noncompliance.

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