Clean Water Act discharge permit · NPDES 03R10I00C

DIVISION PRT-B TUNNEL SYSTEM, Washington, DC: NPDES 03R10I00C discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

DIVISION PRT-B TUNNEL SYSTEM, held by DC Water/DC Clean Rivers, holds NPDES permit 03R10I00C. EPA’s file records it issued June 11, 2025 and expiring February 16, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for DIVISION PRT-B TUNNEL SYSTEM: its NPDES ID, its permit type and status, its dates, its address in Washington, District of Columbia. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES 03R10I00C.

Identity

Facility as filed	DIVISION PRT-B TUNNEL SYSTEM
Permittee as filed	DC Water/DC Clean Rivers
NPDES ID	03R10I00C
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	June 11, 2025
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Washington, DC 20004
Receiving water impaired	303(D) Listed
Subwatershed	Pimmit Run-Potomac River (HUC 020700100103)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES 03R10I00C.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES 03R10I00C.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, 03R10I00C.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID 03R10I00C there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

DIVISION PRT-B TUNNEL SYSTEM, a storm water construction permit held by DC Water/DC Clean Rivers in Washington, is one of 178 such permits on EPA's NPDES register in the District of Columbia, this one included. It sits within a group of 55 NPDES permits in the Pimmit Run-Potomac River subwatershed, this one included. Of the District of Columbia storm water construction permits, 0.6% of the 178 have a violation on file, and this permit records none of the numeric-limit or effluent exceedance counts.