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Clean Water Act discharge permit · NPDES MDG999136

ROCK HALL MARINE RAILWAY, Rock Hall, MD: NPDES MDG999136 discharge permit, effluent exceedances, inspections, penalties

ROCK HALL MARINE RAILWAY, held by Rock Hall Marine Railway, Inc., holds NPDES permit MDG999136, which discharges to Lower Chester River. EPA’s file records it issued June 16, 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.

What the register holds for ROCK HALL MARINE RAILWAY: its NPDES ID, its permit type and status, its dates, its address in Rock Hall, Maryland, its receiving water, and 6 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDG999136.

Identity

Facility as filedROCK HALL MARINE RAILWAY
Permittee as filedRock Hall Marine Railway, Inc.
NPDES IDMDG999136
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 16, 2011
Expiration dateApril 30, 2015
Issuing agencyMaryland Department of The Environment
AddressRock Hall, MD 21661
Receiving waterLower Chester River
Receiving water impaired303(D) Listed
SIC4493 – Marinas
Other EPA IDs (FRS)RCRA handler MDR000506881

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended400
Oil & Grease400
Copper, total [as Cu]400
Lead, total [as Pb]400
Zinc, total [as Zn]400
Flow200

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDG999136.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG999136.

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 MDG999136 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit MDG999136, held by Rock Hall Marine Railway, Inc. for ROCK HALL MARINE RAILWAY in Rock Hall, Maryland, discharging to Lower Chester River. The listed figures are a Minor Discharger class of 6 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.