POTAC, LLC

NPDES permit TX0096474 · Minor NON-POTW · administratively continued, expires 2026-05-22 · 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 2026-05-22 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

2values over a limit
0required values missing, on 0 form(s)
0of 13 forms filed late

Last period with anything received: 2026-07-31. Most often over: Sulfide, total [as S] (2).

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 (30)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY AV <= 26 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 49 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY AV <= 132 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 256 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 24 lb/d all year
001Solids, total suspendedDAILY MX <= 38 lb/d all year
001Oil & GreaseDAILY AV <= 8.6 lb/d all year
001Oil & GreaseDAILY MX <= 16 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 5.1 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 11 lb/d all year
001Sulfide, total [as S]DAILY AV <= .16 lb/d all year
001Sulfide, total [as S]DAILY MX <= .32 lb/d all year
001Chromium, hexavalent [as Cr]DAILY AV <= .058 lb/d all year
001Chromium, hexavalent [as Cr]DAILY MX <= .12 lb/d all year
001Chromium, total [as Cr]DAILY AV <= .28 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .6 lb/d all year
001Zinc, total [as Zn]DAILY AV <= .16 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .33 mg/L all year
001Zinc, total [as Zn]DAILY AV <= .036 lb/d all year
001Zinc, total [as Zn]DAILY MX <= .76 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .12 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .16 MGD all year
001Phenolic compounds, totalDAILY AV <= .19 lb/d all year
001Phenolic compounds, totalDAILY MX <= .39 lb/d all year
TXAWhole effluent toxicityDAILY AV <= 100 % all year
TXAWhole effluent toxicityDAILY MX <= 100 % all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP 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