Clean Water Act discharge permit · NPDES MDG498060

ROCKVILLE PLANT, Rockville, MD: NPDES MDG498060 discharge permit, effluent exceedances, inspections, penalties

Name: ROCKVILLE PLANT, NPDES MDG498060: Clean Water Act discharge permit record
Creator: Velarion Records
License: https://www.usa.gov/government-works

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
2Pollutants with an effluent exceedance

ROCKVILLE PLANT, held by Daniel G. Schuster, LLC, holds NPDES permit MDG498060, which discharges to Unnamed Trib To Rock Creek. EPA’s file records it issued January 25, 2013 and expiring April 30, 2015. 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.

Identity

Facility as filed	ROCKVILLE PLANT
Permittee as filed	Daniel G. Schuster, LLC
NPDES ID	MDG498060
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	January 25, 2013
Expiration date	April 30, 2015
Issuing agency	Maryland Department of The Environment
Address	Rockville, MD 20850
Receiving water	Unnamed Trib to Rock Creek

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

Effluent limits and exceedances

5Pollutants on file
4Under a numeric limit
4With a violation of any kind
2With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	2	5	2	February 28, 2022	47% over the limit
Oil and grease	0	3	2	October 31, 2024	123% over the limit
pH	2	6	0
Flow, in conduit or thru treatment plant	2	4	0
pH change [range]	2	0	0

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 MDG498060.

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.

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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 MDG498060 there.

Nearby on the register

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

The Velarion Records page covers NPDES permit MDG498060 for the ROCKVILLE PLANT in Rockville, MD, held by Daniel G. Schuster, LLC, which discharges to Unnamed Trib To Rock Creek. The permit is administratively continued, was issued January 25, 2013 and expired April 30, 2015, and the page lists 5 pollutants on file, 4 under a numeric limit, and 2 with an effluent exceedance.