OXBOW CALCINING LLC

NPDES permit TX0068781 · Minor NON-POTW · effective, expires 2028-12-21 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 36 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (43)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 65 mg/L all year
001Solids, total suspendedDAILY MX <= 80 mg/L all year
001Carbon, tot organic [TOC]DAILY AV <= 50 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 65 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
101BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
101BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
101BOD, 5-day, 20 deg. CDAILY AV <= 1.7 lb/d all year
101BOD, 5-day, 20 deg. CDAILY MX <= 2.5 lb/d all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Solids, total suspendedDAILY AV <= 20 mg/L all year
101Solids, total suspendedDAILY MX <= 45 mg/L all year
101Solids, total suspendedDAILY AV <= 1.7 lb/d all year
101Solids, total suspendedDAILY MX <= 2.5 lb/d all year
101Copper, total [as Cu]DAILY AV <= .002 lb/d all year
101Copper, total [as Cu]DAILY MX <= .004 lb/d all year
101Zinc, total [as Zn]DAILY AV <= .02 lb/d all year
101Zinc, total [as Zn]DAILY MX <= .04 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= .01 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= .015 MGD all year
101Chlorine, total residualMO MIN >= 1 mg/L all year
101Chlorine, total residualMO MAX <= 4 mg/L all year
101EnterococciDAILY AV <= 35 MPN/100mL all year
101EnterococciDAILY MX <= 104 MPN/100mL all year
102BOD, 5-day, 20 deg. CDAILY AV <= 1.7 lb/d all year
102BOD, 5-day, 20 deg. CDAILY MX <= 2.5 lb/d all year
102pHMINIMUM report only all year
102pHMAXIMUM report only all year
102Solids, total suspendedDAILY AV report only all year
102Solids, total suspendedDAILY MX report only all year
102Copper, total [as Cu]DAILY AV report only all year
102Copper, total [as Cu]DAILY MX report only all year
102Zinc, total [as Zn]DAILY AV report only all year
102Zinc, total [as Zn]DAILY MX report only all year
102Flow, in conduit or thru treatment plantDAILY AV report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
102Chlorine, total residualMO MIN report only all year
102Chlorine, total residualMO MAX 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