South Carolina Ports Authority

NPDES permit SC0001759 · Major NON-POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-03-31 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

4values over a limit
0required values missing, on 0 form(s)
3of 38 forms filed late

Last period with anything received: 2026-08-31. Most often over: pH (2), Solids, total suspended (2).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (45)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001Oxygen demand, ultimateMO AVG <= 129450 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateMO AVG <= 40959 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateMO AVG <= 96764 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateMO AVG <= 40959 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateDAILY MX <= 258900 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateDAILY MX <= 81918 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateDAILY MX <= 193528 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateDAILY MX <= 81918 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]DAILY MN >= 1 mg/L all year
001Oxygen, dissolved [DO]DAILY MN >= 1 mg/L all year
001Oxygen, dissolved [DO]MO AV MN >= 4 mg/L all year
001Oxygen, dissolved [DO]MO AV MN >= 4 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 10898 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 14655 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 21795 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 29310 lb/d all year
001pHINST MIN >= 6 SU all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 33396 lb/d all year
001Solids, total suspendedMO AVG <= 23352 lb/d all year
001Solids, total suspendedDAILY MX <= 66792 lb/d all year
001Solids, total suspendedDAILY MX <= 46704 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Pass/Fail Static 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
004BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 8.5 SU all year
004Solids, total suspendedDAILY MX <= 40 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX 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