Clean Water Act discharge permit · NPDES MDG499863

MCCENEY PIT, Silver Spring, MD: NPDES MDG499863 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
5Pollutants with an effluent exceedance

MCCENEY PIT, held by PERCONTEE, INC., holds NPDES permit MDG499863, which discharges to Washington Metro. EPA’s file records it issued December 1, 2011 and expiring April 30, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	MCCENEY PIT
Permittee as filed	PERCONTEE, INC.
NPDES ID	MDG499863
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	December 1, 2011
Expiration date	April 30, 2015
Issuing agency	MDE
Address	Silver Spring, MD 20904
Receiving water	WASHINGTON METRO
Receiving water impaired	303(D) Listed
Subwatershed	Paint Branch (HUC 020700100202)
SIC	1423 – Crushed And Broken Granite

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
7With a violation of any kind
5With 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
Temperature, water deg. fahrenheit	12	68	40	September 30, 2015	25% over the limit
Solids, total suspended	24	75	19	September 30, 2016	110% over the limit
pH	24	61	4	June 30, 2013
pH change [range]	24	79	1	September 30, 2016
Solids, settleable	12	36	1	March 31, 2013	39,900% over the limit
Flow, in conduit or thru treatment plant	24	82	0
Temp. diff. between up/down stream deg. F	12	39	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 MDG499863.

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 MDG499863 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers the Clean Water Act discharge permit NPDES MDG499863 for MCCENEY PIT in Silver Spring, MD, held by PERCONTEE, INC., which discharges to WASHINGTON METRO and is listed under the Paint Branch subwatershed HUC 020700100202. The permit is administratively continued as a Minor Discharger class permit, with 7 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.