Clean Water Act discharge permit · NPDES 03R10I00Z

DIVISION PRT-B CSO-027, Washington, DC: NPDES 03R10I00Z discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

DIVISION PRT-B CSO-027, held by CBNA Halmar Clean Rivers JV, holds NPDES permit 03R10I00Z. EPA’s file records it issued October 6, 2025 and expiring February 16, 2027.

DIVISION PRT-B CSO-027, Washington, District of Columbia: Coverage under a general permit 03R10I00Z, held by CBNA Halmar Clean Rivers JV; Construction stormwater; Effective; issued October 6, 2025, term to February 16, 2027, by U.S. EPA.

District of Columbia holds 228 Construction stormwater coverages of this permit type in EPA’s file; 173 were issued before 03R10I00Z. CBNA Halmar Clean Rivers JV holds 9 permits in District of Columbia.

Other permits held by CBNA Halmar Clean Rivers JV

DIVISION PRT-B CSO-020, Washington: 03R10I00I, issued June 26, 2025
DIVISION PRT-B CSO-024, Washington: 03R10I00V, issued September 9, 2025
DIVISION PRT-B CSO-029, Washington: 03R10I01C, issued December 19, 2025
DIVISION PRT-B CSO-22, Washington: 03R10I01N, issued February 26, 2026
DIVISION PRT-B JBAB, Washington: 03R10I01O, issued May 22, 2026
DIVISION PRT-B CSO-022, Washington: DCR1000DC, issued November 5, 2024
DIVISION PRT-B WEST POTOMAC PARK, Washington: DCR1000DK, issued January 14, 2025
DIVISION PRT-B CSO-028, Washington: DCR1000DP, issued February 28, 2025

Coverages issued nearest 03R10I00Z

September 9, 2025: DIVISION PRT-B CSO-024, Washington, 03R10I00V, held by CBNA Halmar Clean Rivers JV
September 10, 2025: HOWARD UNIVERSITY HOSPITAL, Washington, 03R10I00T, held by Gilbane Building Company
September 23, 2025: P-158 MARINE BACHELORS ENLISTED QUARTERS, Washington, 03R10I00W, held by Clark Construction
September 26, 2025: THE PARKS AT WALTER REED - PARCEL Z, Washington, 03R10I00X, held by NVR, INC.
September 30, 2025: DIVISION PRT-B TUNNEL SYSTEM, Washington, 03R10I00Y, held by DC Water/DC Clean Rivers
October 7, 2025: KIPP VALOR DC ACADEMY, Washington, 03R10I010, held by Benoit Laverdure
October 7, 2025: WHITTIER ES - MODULAR CAMPUS, Washington, 03R10I011, held by Haddcon LLC
October 10, 2025: FOOD & FRIENDS, Washington, 03R10I012, held by Ingrid Arguenta
October 15, 2025: PARK MORTON, Washington, 03R10I013, held by Joe Nelson
October 27, 2025: 4201 ALBEMARLE STREET NW, Washington, 03R10I014, held by Saint Columba's Vestry

DIVISION PRT-B CSO-027 among its neighbors

EPA’s permit file holds 129 discharge permits in the Pimmit Run-Potomac River subwatershed (HUC 020700100103), 03R10I00Z among them. Its county holds 242, 4 of them major permits; 03R10I00Z is a minor permit.

Other permits in the Pimmit Run-Potomac River subwatershed (HUC 020700100103)

1 K STREET SW, Dc: 03R10I00N, minor permit, permit term to February 16, 2027
10TH AND IRVING, Arlington: VAG830644, minor permit, discharging to Potomac River-Pimmit Run, permit term to February 29, 2028
10TH AND IRVING, Arlington: VAR10V086, minor permit, discharging to Potomac River-Pimmit Run, permit term to June 30, 2029
113 POTOMAC AVENUE SW, Washington: DCR1000A4, minor permit, permit term to February 16, 2027
12 STREET AND CONSTITUTION PUMP STATION, Washington: DCNOEJ00I, minor permit, permit term to September 18, 2023
12 STREET AND MAINE AVENUE PUMPING STATION, Washington: DCNOEJ00J, minor permit, permit term to September 18, 2023
14 STREET BRIDGE PUMPING STATION, Washington: DCNOEJ00E, minor permit, permit term to September 18, 2023
1501 FAIRFAX DRIVE, Arlington: VAR10U872, minor permit, discharging to Potomac River-Pimmit Run, permit term to June 30, 2029
15TH AND S APARTMENTS, Washington: DCR10008T, minor permit, permit term to February 15, 2022
1812 N MOORE STREET, Arlington: VAG830340, minor permit, discharging to Potomac River-Pimmit Run, permit term to February 25, 2023

What the register holds for DIVISION PRT-B CSO-027: 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 03R10I00Z.

Identity

Facility as filed	DIVISION PRT-B CSO-027
Permittee as filed	CBNA Halmar Clean Rivers JV
NPDES ID	03R10I00Z
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	October 6, 2025
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Washington, DC 20007
Receiving water impaired	303(D) Listed
Subwatershed	Pimmit Run-Potomac River (HUC 020700100103)

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 03R10I00Z.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES 03R10I00Z.

Inspections

EPA’s inspection file holds no inspection for NPDES 03R10I00Z.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES 03R10I00Z.

Watch this permit

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Nearby on the register

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

DIVISION PRT-B CSO-027 sits among 178 storm water construction permits in District of Columbia, and 0.6% of those have a violation on file. The Pimmit Run-Potomac River subwatershed holds 55 NPDES permits, this permit included. Including this permit, 83.4% of the 175 storm water construction permits in District of Columbia were issued before it.