Clean Water Act discharge permit · NPDES MDG915049
FORMER SHELL STATION # 100558, Rockville, MD: NPDES MDG915049 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
FORMER SHELL STATION # 100558, held by SHELL STATION, holds NPDES permit MDG915049, which discharges to Rock Creek. EPA’s file records it issued August 23, 2005 and expiring May 24, 2007. 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 | FORMER SHELL STATION # 100558 |
|---|---|
| Permittee as filed | SHELL STATION |
| NPDES ID | MDG915049 |
| 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 | August 23, 2005 |
| Expiration date | May 24, 2007 |
| Address | Rockville, MD 20852 |
| Receiving water | ROCK CREEK |
| Subwatershed | Lower Rock Creek (HUC 020700100102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| tert-Butyl alcohol [TBA] | 2 | 28 | 0 | ||
| Methyl tert-butyl ether [MTBE] | 2 | 26 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 2 | 26 | 0 | ||
| Toluene | 2 | 26 | 0 | ||
| Benzene | 2 | 26 | 0 | ||
| Ethylbenzene | 2 | 26 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 26 | 0 | ||
| Xylene [mix of m+o+p] | 2 | 26 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDG915049.
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 MDG915049.
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, MDG915049.
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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 MDG915049 there.
Nearby on the register
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- Every permit record in Rockville, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.