SD Science And Technology Authority

NPDES permit SD0028134 · Minor NON-POTW · administratively continued, expires 2012-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2012-06-30 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 52 forms filed late

Last period with anything received: 2026-07-31.

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 (196)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 75 deg F all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001Conductivity30DA AVG <= 3000 umho/cm all year
001ConductivityDAILY MX <= 4375 umho/cm all year
001Oxygen, dissolved [DO]DAILY MN report only all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 8 SU all year
001Solids, total suspended30DA AVG <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 17.5 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 1.8 mg/L all year
001Nitrogen, nitrate total [as N]30DA AVG <= 50 mg/L all year
001Nitrogen, nitrate total [as N]DAILY MX <= 88 mg/L all year
001Cyanide, weak acid, dissociable30DA AVG <= 5.2 ug/L all year
001Cyanide, weak acid, dissociableDAILY MX <= 22 ug/L all year
001Hardness, total [as CaCO3]DAILY MN report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Arsenic, total recoverable30DA AVG <= 150 ug/L all year
001Arsenic, total recoverableDAILY MX <= 340 ug/L all year
001Selenium, total recoverable30DA AVG <= 4.6 ug/L all year
001Selenium, total recoverableDAILY MX <= 12.8 ug/L all year
001Selenite, Total Recoverable30DA AVG report only all year
001Selenite, Total RecoverableDAILY MX report only all year
001Nickel, total recoverable30DA AVG <= 168 ug/L all year
001Nickel, total recoverableDAILY MX <= 1520 ug/L all year
001Silver total recoverable30DA AVG <= 41.1 ug/L all year
001Silver total recoverableDAILY MX <= 41.1 ug/L all year
001Zinc, total recoverable30DA AVG <= 388 ug/L all year
001Zinc, total recoverableDAILY MX <= 388 ug/L all year
001Cadmium, total recoverable30DA AVG <= .76 ug/L all year
001Cadmium, total recoverableDAILY MX <= 8.7 ug/L all year
001Lead, total recoverable30DA AVG <= 18.6 ug/L all year
001Lead, total recoverableDAILY MX <= 477 ug/L all year
001Chromium, total recoverable30DA AVG <= 11 ug/L all year
001Chromium, total recoverableDAILY MX <= 16 ug/L all year
001Copper, total recoverable30DA AVG <= 30.5 ug/L all year
001Copper, total recoverableDAILY MX <= 52 ug/L all year
001Selenate, Total Recoverable30DA AVG report only all year
001Selenate, Total RecoverableDAILY MX report only all year
001Solids, total dissolved30DA AVG <= 3000 mg/L all year
001Solids, total dissolvedDAILY MX <= 4375 mg/L all year
001Mercury, total recoverable30DA AVG <= .012 ug/L all year
001Mercury, total recoverableDAILY MX <= 1.4 ug/L all year
001Hydrocarbons, total petroleumDAILY MX <= 10 mg/L all year
001Oil and grease visualDAILY MX report only all year
001Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
001Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasDAILY MX <= 0 pass=0;fail=1 all year
002Temperature, water deg. fahrenheit30DA AVG report only all year
002Temperature, water deg. fahrenheitDAILY MX <= 65 deg F all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002Conductivity30DA AVG <= 3000 umho/cm all year
002ConductivityDAILY MX <= 4375 umho/cm all year
002Oxygen, dissolved [DO]DAILY MN report only all year
002BOD, 5-day, 20 deg. C30DA AVG report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002pHDAILY MN >= 6.6 SU all year
002pHDAILY MX <= 8.6 SU all year
002Solids, total suspended30DA AVG <= 10 mg/L all year
002Solids, total suspendedDAILY MX <= 17.5 mg/L all year
002Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 1.8 mg/L all year
002Nitrogen, nitrate total [as N]30DA AVG <= 50 mg/L all year
002Nitrogen, nitrate total [as N]DAILY MX <= 88 mg/L all year
002Cyanide, weak acid, dissociable30DA AVG <= 5.2 ug/L all year
002Cyanide, weak acid, dissociableDAILY MX <= 22 ug/L all year
002Hardness, total [as CaCO3]DAILY MN report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Arsenic, total recoverable30DA AVG <= 150 ug/L all year
002Arsenic, total recoverableDAILY MX <= 340 ug/L all year
002Selenium, total recoverable30DA AVG <= 4.6 ug/L all year
002Selenium, total recoverableDAILY MX <= 12.8 ug/L all year
002Selenite, Total Recoverable30DA AVG report only all year
002Selenite, Total RecoverableDAILY MX report only all year
002Nickel, total recoverable30DA AVG <= 168 ug/L all year
002Nickel, total recoverableDAILY MX <= 1520 ug/L all year
002Silver total recoverable30DA AVG <= 41.1 ug/L all year
002Silver total recoverableDAILY MX < 41.1 ug/L all year
002Zinc, total recoverable30DA AVG <= 388 ug/L all year
002Zinc, total recoverableDAILY MX <= 388 ug/L all year
002Cadmium, total recoverable30DA AVG <= .76 ug/L all year
002Cadmium, total recoverableDAILY MX <= 8.7 ug/L all year
002Lead, total recoverable30DA AVG <= 18.6 ug/L all year
002Lead, total recoverableDAILY MX <= 477 ug/L all year
002Chromium, total recoverable30DA AVG <= 11 ug/L all year
002Chromium, total recoverableDAILY MX <= 16 ug/L all year
002Copper, total recoverable30DA AVG <= 30.5 ug/L all year
002Copper, total recoverableDAILY MX <= 52 ug/L all year
002Selenate, Total Recoverable30DA AVG report only all year
002Selenate, Total RecoverableDAILY MX report only all year
002Solids, total dissolved30DA AVG <= 3000 mg/L all year
002Solids, total dissolvedDAILY MX <= 4375 mg/L all year
002Mercury, total recoverable30DA AVG <= .012 ug/L all year
002Mercury, total recoverableDAILY MX <= 1.4 ug/L all year
002Hydrocarbons, total petroleumDAILY MX <= 10 mg/L all year
002Oil and grease visualDAILY MX report only all year
002Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
002Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasDAILY MX <= 0 pass=0;fail=1 all year
MTLTemperature, water deg. fahrenheit30DA AVG report only all year
MTLTemperature, water deg. fahrenheit30DA AVG report only all year
MTLTemperature, water deg. fahrenheitDAILY MX report only all year
MTLTemperature, water deg. fahrenheitDAILY MX report only all year
MTLConductivity30DA AVG report only all year
MTLConductivity30DA AVG report only all year
MTLConductivityDAILY MX report only all year
MTLConductivityDAILY MX report only all year
MTLOxygen, dissolved [DO]DAILY MN report only all year
MTLOxygen, dissolved [DO]DAILY MN report only all year
MTLpHDAILY MN report only all year
MTLpHDAILY MN report only all year
MTLpHDAILY MX report only all year
MTLpHDAILY MX report only all year
MTLSolids, total suspended30DA AVG report only all year
MTLSolids, total suspended30DA AVG report only all year
MTLSolids, total suspendedDAILY MX report only all year
MTLSolids, total suspendedDAILY MX report only all year
MTLNitrogen, ammonia total [as N]30DA AVG report only all year
MTLNitrogen, ammonia total [as N]30DA AVG report only all year
MTLNitrogen, ammonia total [as N]DAILY MX report only all year
MTLNitrogen, ammonia total [as N]DAILY MX report only all year
MTLNitrogen, nitrate total [as N]30DA AVG report only all year
MTLNitrogen, nitrate total [as N]30DA AVG report only all year
MTLNitrogen, nitrate total [as N]DAILY MX report only all year
MTLNitrogen, nitrate total [as N]DAILY MX report only all year
MTLCyanide, weak acid, dissociable30DA AVG report only all year
MTLCyanide, weak acid, dissociable30DA AVG report only all year
MTLCyanide, weak acid, dissociableDAILY MX report only all year
MTLCyanide, weak acid, dissociableDAILY MX report only all year
MTLHardness, total [as CaCO3]30DA AVG report only all year
MTLHardness, total [as CaCO3]30DA AVG report only all year
MTLHardness, total [as CaCO3]DAILY MX report only all year
MTLHardness, total [as CaCO3]DAILY MX report only all year
MTLArsenic, total recoverable30DA AVG report only all year
MTLArsenic, total recoverable30DA AVG report only all year
MTLArsenic, total recoverableDAILY MX report only all year
MTLArsenic, total recoverableDAILY MX report only all year
MTLSelenium, total recoverable30DA AVG report only all year
MTLSelenium, total recoverable30DA AVG report only all year
MTLSelenium, total recoverableDAILY MX report only all year
MTLSelenium, total recoverableDAILY MX report only all year
MTLSelenite, Total Recoverable30DA AVG report only all year
MTLSelenite, Total Recoverable30DA AVG report only all year
MTLSelenite, Total RecoverableDAILY MX report only all year
MTLSelenite, Total RecoverableDAILY MX report only all year
MTLNickel, total recoverable30DA AVG report only all year
MTLNickel, total recoverable30DA AVG report only all year
MTLNickel, total recoverableDAILY MX report only all year
MTLNickel, total recoverableDAILY MX report only all year
MTLSilver total recoverable30DA AVG report only all year
MTLSilver total recoverable30DA AVG report only all year
MTLSilver total recoverableDAILY MX report only all year
MTLSilver total recoverableDAILY MX report only all year
MTLZinc, total recoverable30DA AVG report only all year
MTLZinc, total recoverable30DA AVG report only all year
MTLZinc, total recoverableDAILY MX report only all year
MTLZinc, total recoverableDAILY MX report only all year
MTLCadmium, total recoverable30DA AVG report only all year
MTLCadmium, total recoverable30DA AVG report only all year
MTLCadmium, total recoverableDAILY MX report only all year
MTLCadmium, total recoverableDAILY MX report only all year
MTLLead, total recoverable30DA AVG report only all year
MTLLead, total recoverable30DA AVG report only all year
MTLLead, total recoverableDAILY MX report only all year
MTLLead, total recoverableDAILY MX report only all year
MTLCopper, total recoverable30DA AVG report only all year
MTLCopper, total recoverable30DA AVG report only all year
MTLCopper, total recoverableDAILY MX report only all year
MTLCopper, total recoverableDAILY MX report only all year
MTLChromium, trivalent total recoverable30DA AVG report only all year
MTLChromium, trivalent total recoverable30DA AVG report only all year
MTLChromium, trivalent total recoverableDAILY MX report only all year
MTLChromium, trivalent total recoverableDAILY MX report only all year
MTLSelenate, Total Recoverable30DA AVG report only all year
MTLSelenate, Total Recoverable30DA AVG report only all year
MTLSelenate, Total RecoverableDAILY MX report only all year
MTLSelenate, Total RecoverableDAILY MX report only all year
MTLSolids, total dissolved30DA AVG report only all year
MTLSolids, total dissolved30DA AVG report only all year
MTLSolids, total dissolvedDAILY MX report only all year
MTLSolids, total dissolvedDAILY MX report only all year
MTLMercury, total recoverable30DA AVG report only all year
MTLMercury, total recoverable30DA AVG report only all year
MTLMercury, total recoverableDAILY MX report only all year
MTLMercury, total recoverableDAILY MX report only all year
MTLChromium, hexavalent tot recoverable30DA AVG report only all year
MTLChromium, hexavalent tot recoverable30DA AVG report only all year
MTLChromium, hexavalent tot recoverableDAILY MX report only all year
MTLChromium, hexavalent tot recoverableDAILY MX report only all year
MTLHydrocarbons, total petroleumDAILY MX report only all year
MTLHydrocarbons, total petroleumDAILY MX report only all year
MTLOil and grease visualDAILY MN report only all year
MTLOil and grease visualDAILY 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