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Alabama State Port Authority

Marine Cargo Handling, Mobile, Alabama. NPDES permit AL0042374, in force until Jan 31, 2031. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 quarterly, form Q quarterly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
May 2026Solids, total suspended, daily maximum95≤ 70 mg/L36%
May 2026Solids, total suspended, monthly average60≤ 35 mg/L71%

Limits in force (30)

ParameterStatisticLimitMonths
Specific conductancemonthly averagereport only (uS/cm)all year
Specific conductancemonthly averagereport only (uS/cm)all year
Specific conductancedaily maximumreport only (uS/cm)all year
Specific conductancedaily maximumreport only (uS/cm)all year
Sulfate [as S]monthly averagereport only (mg/L)all year
Sulfate [as S]monthly averagereport only (mg/L)all year
Sulfate [as S]daily maximumreport only (mg/L)all year
Sulfate [as S]daily maximumreport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 35 mg/Lall year
Solids, total suspendedmonthly average≤ 35 mg/Lall year
Solids, total suspendeddaily maximum≤ 70 mg/Lall year
Solids, total suspendeddaily maximum≤ 70 mg/Lall year
Iron, total [as Fe]monthly average≤ 3 mg/Lall year
Iron, total [as Fe]monthly average≤ 3 mg/Lall year
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year
Manganese, total [as Mn]daily maximum≤ 4 mg/Lall year
Manganese, total [as Mn]daily maximum≤ 4 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year

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

Same industry: the 13 Water Transportation permits in Alabama.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0042374 · MCP: https://passage-data.com/mcp