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NPDES TXG113979 · Clean Water Act

MV PORT AUTHUR RM 1, Port Authur, TX: NPDES TXG113979 discharge permit, effluent exceedances, inspections, penalties

MV PORT AUTHUR RM 1, Port Authur, Texas: General permit coverage TXG113979, held by Texas Materials Group, Inc.; Effective; issued November 7, 2025, term to November 6, 2026.

No violation or effluent exceedance is on file for any of the 20 pollutants listed for NPDES TXG113979.

  • pH: 2 limits.
  • Solids, total suspended: 1 limit.
  • Oil & Grease: 1 limit.
  • Arsenic, total [as As]: 1 limit.
  • Barium, total [as Ba]: 1 limit.
  • Cadmium, total [as Cd]: 1 limit.
  • Chromium, total [as Cr]: 1 limit.
  • Copper, total [as Cu]: 1 limit.
  • Lead, total [as Pb]: 1 limit.
  • Manganese, total [as Mn]: 1 limit.
  • Nickel, total [as Ni]: 1 limit.
  • Silver, total [as Ag]: 1 limit.
  • Zinc, total [as Zn]: 1 limit.
  • Selenium, total [as Se]: 1 limit.
  • Whole effluent toxicity - retest #1: 1 limit.
  • Whole effluent toxicity - retest #2: 1 limit.
  • Flow, in conduit or thru treatment plant: 1 limit.
  • Mercury, total [as Hg]: 1 limit.
  • LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit.
  • LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit.

Other permits held by Texas Materials Group, Inc.

MV PORT AUTHUR RM 1 among its neighbors

124 discharge permits are in the Salt Bayou subwatershed (HUC 120402010300); TXG113979 is one. Its county: 302, 16 major; TXG113979 is minor permit.

Other permits in the Salt Bayou subwatershed (HUC 120402010300)

Identity

FacilityMV PORT AUTHUR RM 1
PermitteeTexas Materials Group, Inc.
NPDES IDTXG113979
StatusEffective
TypeGeneral permit coverage
ClassMinor
Facility typeNon-POTW
IssuedNovember 7, 2025
ExpiresNovember 6, 2026
AddressPort Authur, TX 77655
SubwatershedSalt Bayou (HUC 120402010300)

NPDES TXG113979: effluent limits and exceedances

MV PORT AUTHUR RM 1 (NPDES TXG113979): 20 pollutants on file, 20 limited; 0 with a violation of any kind, 0 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
pH200
Solids, total suspended100
Oil & Grease100
Arsenic, total [as As]100
Barium, total [as Ba]100
Cadmium, total [as Cd]100
Chromium, total [as Cr]100
Copper, total [as Cu]100
Lead, total [as Pb]100
Manganese, total [as Mn]100
Nickel, total [as Ni]100
Silver, total [as Ag]100
Zinc, total [as Zn]100
Selenium, total [as Se]100
Whole effluent toxicity - retest #1100
Whole effluent toxicity - retest #2100
Flow, in conduit or thru treatment plant100
Mercury, total [as Hg]100
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)100
LC50 Pass/Fail Static 24Hr Acute Menidia menidia100

NPDES TXG113979: inspections, violations and enforcement

NPDES TXG113979 (MV PORT AUTHUR RM 1): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES TXG113979

NPDES TXG113979: 20 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.