GCC Dacotah

NPDES permit SD0000027 · Minor NON-POTW · administratively continued, expires 2013-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2013-09-30 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

0values over a limit
0required values missing, on 0 form(s)
0of 40 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among SD permits in EPA's filings — check your permit).

Limits in force (65)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001pHDAILY MN >= 6.6 SU all year
001pHDAILY MX <= 9 SU all year
001Alkalinity, total [as CaCO3]DAILY MX report only all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
001Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
003Temperature, water deg. fahrenheit30DA AVG report only all year
003Temperature, water deg. fahrenheitDAILY MX <= 75 deg F all year
003Temperature, water deg. fahrenheit30DA AVG report only all year
003Temperature, water deg. fahrenheitDAILY MX report only all year
003Temperature, water deg. fahrenheit30DA AVG report only all year
003Temperature, water deg. fahrenheitDAILY MX report only all year
003Flow rate30DA AVG report only all year
003Flow rateDAILY MX report only all year
003Total production - mass30DA AVG report only all year
003pHDAILY MN >= 6.6 SU all year
003pHDAILY MX <= 8.6 SU all year
003Alkalinity, total [as CaCO3]DAILY MX report only all year
003Solids, total suspended30DA AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 45 mg/L all year
003Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
003Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
003Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
003Solids, total dissolved30DA AVG <= 1000 mg/L all year
003Solids, total dissolvedDAILY MX <= 1750 mg/L all year
003Flow, process wastewater30DA AVG report only all year
003Flow, process wastewaterDAILY MX report only all year
003Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
004Temperature, water deg. fahrenheit30DA AVG report only all year
004Temperature, water deg. fahrenheitDAILY MX report only all year
004Flow rate30DA AVG report only all year
004Flow rateDAILY MX report only all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspended30DA AVG <= 50 mg/L all year
004Solids, total suspendedDAILY MX <= 50 mg/L all year
004Oil and grease, hexane extr methodDAILY MX report only all year
004Oil and grease, hexane extr methodDAILY MX report only all year
004Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
004Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
005Temperature, water deg. fahrenheit30DA AVG report only all year
005Temperature, water deg. fahrenheitDAILY MX report only all year
005Flow rate30DA AVG report only all year
005Flow rateDAILY MX report only all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005Solids, total suspended30DA AVG <= 50 mg/L all year
005Solids, total suspendedDAILY MX <= 50 mg/L all year
005Oil and grease, hexane extr methodDAILY MX report only all year
005Oil and grease, hexane extr methodDAILY MX report only all year
005Nickel, total recoverable30DA AVG report only all year
005Nickel, total recoverableDAILY MX report only all year
005Zinc, total recoverable30DA AVG report only all year
005Zinc, total recoverableDAILY MX report only all year
005Copper, total recoverable30DA AVG report only all year
005Copper, total recoverableDAILY MX report only all year
005Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
005Oil and grease visualDAILY MX <= 0 N=0;Y=1 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