UNITED ALUMINUM CORPORATION, North Haven, CT: NPDES CTR050010 discharge permit, effluent exceedances, inspections, penalties

UNITED ALUMINUM CORPORATION, North Haven, Connecticut: General permit coverage CTR050010, held by United Aluminum Corporation; Industrial stormwater; Effective; issued June 15, 2026, term to September 30, 2030, by CT DEEP.

No violation or effluent exceedance is on file for any of the 32 pollutants listed for NPDES CTR050010.

• pH: 4 limits.
• Conductivity: 2 limits.
• Solids, total suspended: 2 limits.
• Oil & Grease: 2 limits.
• Nitrogen, Kjeldahl, total [as N]: 2 limits.
• Phosphorous, total recoverable: 2 limits.
• Hardness, total [as CaCO3]: 2 limits.
• Zinc, total recoverable: 2 limits.
• Aluminum, total recoverable: 2 limits.
• Lead, total recoverable: 2 limits.
• Copper, total recoverable: 2 limits.
• Acenaphthylene: 2 limits.
• Acenaphthene: 2 limits.
• Anthracene: 2 limits.
• Benzo[b]fluoranthene: 2 limits.
• Benzo[k]fluoranthene: 2 limits.
• Benzo[a]pyrene: 2 limits.
• Chrysene: 2 limits.
• Fluoranthene: 2 limits.
• Fluorene: 2 limits.
• Indeno[1,2,3-cd]pyrene: 2 limits.
• Phenanthrene: 2 limits.
• Pyrene: 2 limits.
• Benzo[ghi]perylene: 2 limits.
• Benzo[a]anthracene: 2 limits.
• Dibenz[a,h]anthracene: 2 limits.
• Naphthalene: 2 limits.
• Nitrogen, nitrate total [as NO3]: 2 limits.
• Chemical Oxygen Demand [COD]: 2 limits.
• LC50 Static 48Hr Acute D. Pulex: 2 limits.
• NOAEL Static 48Hr Acute D. pulex: 2 limits.
• %Surv Static 48Hr Acute Daphnia Pulex: 2 limits.

Connecticut holds 228 Industrial stormwater coverages of this permit type in EPA’s file; 29 were issued before CTR050010.

Coverages issued nearest CTR050010

• 2026-01-01: SW TEST 2, Hartford: CTR010001, held by WPED HQ79
• 2026-06-15: 308-1 MILE CREEK RD, Old Lyme: CTR050001, held by 50 HATCHETTS HILL ROAD LLC
• 2026-06-15: P.C. METALS, INC. SCRAP METAL RECYCLING YARD, Bridgeport: CTR050002, held by P.C Metals, Inc
• 2026-06-15: SPARTECH, LLC, Stamford: CTR050004, held by Spartech, LLC
• 2026-06-15: K&H PROPERTIES, Lisbon: CTR050006, held by Ricon Materials, LLC
• 2026-06-15: COLONIAL COATINGS CORPORATION, Milford: CTR050012, held by COLONIAL COATINGS, INC.
• 2026-06-15: ORANGE AIR NATIONAL GUARD STATION, Orange: CTR050015, held by Orange Air National Guard Station
• 2026-06-15: KUEHNE NEW HAVEN LLC, New Haven: CTR050017, held by Kuehne Chemical Company, Inc
• 2026-06-15: 103 AW AIR NATIONAL GUARD BASE, East Granby: CTR050018, held by BRADLEY AIR NATIONAL GUARD BASE
• 2026-06-15: CT HYPODERMICS, Wallingford: CTR050019, held by Connecticut Hypodermics, Incorporated

UNITED ALUMINUM CORPORATION among its neighbors

6 discharge permits are in the Muddy River subwatershed (HUC 011000040104); CTR050010 is one. Its county: 202, 21 major; CTR050010 is minor permit.

Other permits in the Muddy River subwatershed (HUC 011000040104)

• LAND DEVELOPMENT CINEMARK USA, North Haven: CTGSN2824, minor, term to 2020-09-30
• NORTH HAVEN WPCF, North Haven: CTL100404, minor, term to 2025-12-31
• OF MOSSBERG & SONS INC, North Haven: CTR050129, minor, term to 2030-09-30
• PROPOSED 4.98MW PHOTOVOLTAIC SOLAR ARRAY, North Haven: CTGSN3443, minor, term to 2020-09-30
• UNITED ALUMINUM CORPORATION, North Haven: CT0030201, minor, term to 2012-08-31