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Oxbow Calcining LLC

Petroleum And Coal Products, Port Arthur, Texas. NPDES permit TX0068781, in force until Dec 21, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (9 values), outfall 101 form A monthly (20 values), outfall 102 form A monthly (14 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 105 deg Fall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 65 mg/Lall year001
Solids, total suspendeddaily maximum≤ 80 mg/Lall year001
Carbon, tot organic [TOC]daily average≤ 50 mg/Lall year001
Carbon, tot organic [TOC]daily maximum≤ 65 mg/Lall year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
BOD, 5-day, 20 deg. Cdaily average≤ 20 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily average≤ 1.7 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 2.5 lb/dall year101
pHminimum≥ 6 SUall year101
pHmaximum≤ 9 SUall year101
Solids, total suspendeddaily average≤ 20 mg/Lall year101
Solids, total suspendeddaily maximum≤ 45 mg/Lall year101
Solids, total suspendeddaily average≤ 1.7 lb/dall year101
Solids, total suspendeddaily maximum≤ 2.5 lb/dall year101
Copper, total [as Cu]daily average≤ .002 lb/dall year101
Copper, total [as Cu]daily maximum≤ .004 lb/dall year101
Zinc, total [as Zn]daily average≤ .02 lb/dall year101
Zinc, total [as Zn]daily maximum≤ .04 lb/dall year101
Flow, in conduit or thru treatment plantdaily average≤ .01 MGDall year101
Flow, in conduit or thru treatment plantdaily maximum≤ .015 MGDall year101
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year101
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year101
Enterococcidaily average≤ 35 MPN/100mLall year101
Enterococcidaily maximum≤ 104 MPN/100mLall year101
BOD, 5-day, 20 deg. Cdaily average≤ 1.7 lb/dall year102
BOD, 5-day, 20 deg. Cdaily maximum≤ 2.5 lb/dall year102
pHminimumreport only (SU)all year102
pHmaximumreport only (SU)all year102
Solids, total suspendeddaily averagereport only (lb/d)all year102
Solids, total suspendeddaily maximumreport only (lb/d)all year102
Copper, total [as Cu]daily averagereport only (lb/d)all year102
Copper, total [as Cu]daily maximumreport only (lb/d)all year102
Zinc, total [as Zn]daily averagereport only (lb/d)all year102
Zinc, total [as Zn]daily maximumreport only (lb/d)all year102
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year102
Chlorine, total residualmonthly minimumreport only (mg/L)all year102
Chlorine, total residualmonthly maximumreport only (mg/L)all year102

How strict are these limits?

Cited limits by parameter: Texas's rules and the federal ones.

Same industry: the 32 Petroleum Refining and Related Industries permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0068781 · MCP: https://passage-data.com/mcp