EPA · Maryland · discharge permits by parameter

pH change [range] in Maryland

102Permits carrying a limit
10With a recorded exceedance
119Nationwide

Permits

Permit holder	NPDES ID	City	Program	Discharger	Receiving water
JENKINS PROPERTY	MDG498049	BRANDYWINE		Minor	Swanson Creek - Black Swamp Creek
MASON DIXON MATERIALS .CECIL PLANT	MDG499768	PORT DEPOSIT		Minor	FURNACE BAY
COKESBURY ROAD MINE	MDG499767	PERRYVILLE		Minor	LOWER SUSQUEHANNA RIVER
BELVEDERE PLANT	MDG499889	PORT DEPOSIT		Minor	Furnace Bay via PRINCIPIO CREEK
LAUREL HILL QUARRY	MDG490457	LAUREL		Minor	ISRAEL'S CREEK-Upper Monacacy River
GARDINER - ROAD TRACT S&G	MDG498008	WALDORF		Minor	ZEKIAH SWAMP
GRANTLEY PLANT	MDG499831	BALTIMORE		Minor	GWYNN'S RUN
MCCONCHIE SAND AND GRAVEL FACILITY	MDG498015	PORT TOBACCO		Minor	NANJEMOY CREEK
PERRYVILLE PLANT	MDG499888	PERRYVILLE		Minor	PRINCIPIO CREEK
ZIMMERMAN PIT # 2	MDG499806	LEONARDTOWN		Minor	Breton Bay
DAVIDSONVILLE PLANT	MDG493115	DAVIDSONVILLE		Minor	PATUXENT RIVER
HARVE DE GRACE QUARRY	MDG492956	HARVE DE GRACE,		Minor	SUSQUEHANNA RIVER
MOUNTAIN MATERIALS, INC.	MDG492282	JOPPA		Minor	Lower Winters Run
DULEY WASH PLANT	MDG493000	BRANDYWINE		Minor	ROCK CREEK
JENKINS PIT	MDG499708	JOPPA		Minor	LOWER WINTERS RUN
CARRUTH & SON, INC	MDG499745	WALDORF		Minor	Zekiah Swamp
PATUXENT MATERIALS, INC.	MDG491836	BALTIMORE		Minor	Gwynns Falls
MFI CONCRETE, LLC	MDG498066	WOODBINE	Industrial stormwater	Minor	UNNAMED TRIB TO S BRANCH PATAPSCO RIVER
CAROLINE MATERIALS, LLC	MDG499729	DENTON		Minor	UPPER CHOPTANK
CYPRUS MINES	MDG490361	BALTIMORE		Minor	BACK River
ATLANTIC CONCRETE MD LLC	MDG490741	COCKEYSVILLE		Minor	Beaverdam Run-Loch Raven Reservoir
LAPLATA S&G READY MIX FACILITY	MDG499758	LAPLATA		Minor	ZEKIAH SWAMP
LEE PIT # 1	MDG490170	BRANDYWINE		Minor	Patuxent River - Middle
MCINTOSH PIT	MDG499844	MECHANICSVILLE		Minor	LOWER POTOMAC RIVER
RANDALLSTOWN QUARRY	MDG499881	RANDALLSTOWN		Minor	FALLS RUN via PATAPSCO RIVER-LOWER NORTH BR
SCHUSTER CONCRETE READY MIX, LLC	MDG499755	LAUREL		Minor	ANACOSTIA CREEK
R.B. BAKER, INC. - PATCHETT PIT	MDG499864	QUEENSTOWN		Minor	Lower Chester River via QUEENSTOWN CREEK
MCCENEY PIT	MDG499863	SILVER SPRING		Minor	WASHINGTON METRO
MECHANICSVILLE RMC	MDG491091	MECHANICSVILLE		Minor	Lockes Swamp Creek via Lower Patuxent River
BYLER S&G	MDG498016	MECHANICSVILLE		Minor	Lower Patuxent River
MIDLAND QUARRY	MDG498047	MIDLAND		Minor	George's Creek
PINESBURG QUARRY	MDG491405	WILLIAMSPORT		Minor	UNNAMED TRIBUTARY TO POTOMAC RIVER
SUPERIOR SAND COMPANY	MDG490383	FRIENDSVILLE		Minor	YOUGHIOGHENY RIVER
ELKTON PLANT	MDG499726	ELKTON		Minor	Big Elk CREEK
MARSHYHOPE SAND/GRAVEL LLC.	MDG491600	FEDERALSURG		Minor	Marshyhope Creek
RED TOAD ROAD PIT	MDG499887	NORTHEAST		Minor	Northeast River via STONY RUN
ROCKVILLE F & F CO.,INC.PLT # 5	MDG499770	ELKRIDGE		Minor	Dorsey Run

Other parameters in Maryland

pH change [range] nationwide