STRUCTURAL METALS, INC.

NPDES permit TX0083178 · Major NON-POTW · administratively continued, expires 2025-05-14 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-05-14 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
1of 17 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (49)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 10 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 25 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 30 lb/d all year
001Solids, total suspendedDAILY MX <= 45 lb/d all year
001Oil & GreaseDAILY AV <= 10 lb/d all year
001Oil & GreaseDAILY MX <= 15 lb/d all year
001Chloride [as Cl]DAILY AV <= 430 lb/d all year
001Chloride [as Cl]DAILY MX <= 500 lb/d all year
001Sulfate, total [as SO4]DAILY AV <= 500 lb/d all year
001Sulfate, total [as SO4]DAILY MX <= 650 lb/d all year
001Cadmium, total [as Cd]DAILY MX <= .05 mg/L all year
001Chromium, total [as Cr]DAILY AV <= .1 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .2 lb/d all year
001Copper, total [as Cu]DAILY AV <= .2 lb/d all year
001Copper, total [as Cu]DAILY MX <= .5 lb/d all year
001Lead, total [as Pb]DAILY AV <= .165 lb/d all year
001Lead, total [as Pb]DAILY MX <= .495 lb/d all year
001Zinc, total [as Zn]DAILY AV <= .247 lb/d all year
001Zinc, total [as Zn]DAILY MX <= .74 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .12 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .18 MGD all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001Chlorine, total residualMO MAX <= 4 mg/L all year
001E. coliDAILY AV <= 126 CFU/100mL all year
001E. coliDAILY MX <= 399 CFU/100mL all year
TX1Whole effluent toxicity - retest #148HR MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #248HR MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex48HR MIN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulexMO AV MN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute D. PulexSINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states