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Chevron USA Inc, Chevron Products Company

Petroleum Refining, major discharger, Pascagoula, Mississippi. NPDES permit MS0001481 expired Aug 31, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (41 values), outfall 001 form Q quarterly (8 values), outfall 002 form A monthly (8 values), outfall 003 form A monthly (8 values), outfall 005 form A monthly (8 values), outfall 006 form Q quarterly (5 values), and 2 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 80 reports late

Limits in force (94)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 5785 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 11330 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 5065 lb/dall year001
Solids, total suspendeddaily maximum≤ 7913 lb/dall year001
Oil & Greasemonthly averagereport only (mg/L)all year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Oil & Greasemonthly average≤ 1898 lb/dall year001
Oil & Greasedaily maximum≤ 3611 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 3.16 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 20.94 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 202.4 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 1341.23 lb/dall year001
Sulfide, total [as S]monthly averagereport only (mg/L)all year001
Sulfide, total [as S]daily maximumreport only (mg/L)all year001
Sulfide, total [as S]monthly average≤ 31 lb/dall year001
Sulfide, total [as S]daily maximum≤ 70 lb/dall year001
Chromium, hexavalent [as Cr]monthly averagereport only (mg/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]monthly average≤ 2.47 lb/dall year001
Chromium, hexavalent [as Cr]daily maximum≤ 5.54 lb/dall year001
Nickel, total recoverablemonthly average≤ .11 mg/Lall year001
Nickel, total recoverabledaily maximum≤ 1 mg/Lall year001
Nickel, total recoverablemonthly average≤ 6 lb/dall year001
Nickel, total recoverabledaily maximum≤ 58 lb/dall year001
Chromium, total recoverablemonthly averagereport only (mg/L)all year001
Chromium, total recoverabledaily maximumreport only (mg/L)all year001
Chromium, total recoverablemonthly average≤ 28 lb/dall year001
Chromium, total recoverabledaily maximum≤ 82 lb/dall year001
Copper, total recoverablemonthly average≤ .0384 mg/Lall year001
Copper, total recoverabledaily maximum≤ .0595 mg/Lall year001
Copper, total recoverablemonthly average≤ 2.46 lb/dall year001
Copper, total recoverabledaily maximum≤ 3.811 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Phenolic compounds, totalmonthly averagereport only (mg/L)all year001
Phenolic compounds, totaldaily maximumreport only (mg/L)all year001
Phenolic compounds, totalmonthly average≤ 24 lb/dall year001
Phenolic compounds, totaldaily maximum≤ 84 lb/dall year001
Chemical Oxygen Demand [COD]monthly averagereport only (mg/L)all year001
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year001
Chemical Oxygen Demand [COD]monthly average≤ 41814 lb/dall year001
Chemical Oxygen Demand [COD]daily maximum≤ 80634 lb/dall year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasemonthly averagereport only (mg/L)all year002
Oil & Greasemonthly maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year002
Carbon, tot organic [TOC]monthly maximum≤ 35 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year002
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Oil & Greasemonthly averagereport only (mg/L)all year003
Oil & Greasemonthly maximum≤ 15 mg/Lall year003
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year003
Carbon, tot organic [TOC]monthly maximum≤ 35 mg/Lall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year003
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Oil & Greasemonthly averagereport only (mg/L)all year005
Oil & Greasemonthly maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year005
Carbon, tot organic [TOC]monthly maximum≤ 35 mg/Lall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year005
Turbiditydaily maximum≤ 50 NTUall year006
pHminimum≥ 6 SUall year006
pHmaximum≤ 9 SUall year006
Flow, in conduit or thru treatment plantquarterly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
pHminimum≥ 6 SUall year007
pHmaximum≤ 9 SUall year007
Oil & Greasemonthly averagereport only (mg/L)all year007
Oil & Greasemonthly maximum≤ 15 mg/Lall year007
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year007
Carbon, tot organic [TOC]monthly maximum≤ 35 mg/Lall year007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year007
pHminimum≥ 6 SUall year011
pHmaximum≤ 9 SUall year011
Oil & Greasemonthly averagereport only (mg/L)all year011
Oil & Greasemonthly maximum≤ 15 mg/Lall year011
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year011
Carbon, tot organic [TOC]monthly maximum≤ 35 mg/Lall year011
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011

How strict are these limits?

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

Same industry: the 6 Petroleum Refining and Related Industries permits in Mississippi.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0001481 · MCP: https://passage-data.com/mcp