Humboldt State University

NPDES permit CA0025151 · Minor NON-POTW · expired, expires 2024-12-31 · 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 2024-12-31 and is expired: 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
1required values missing, on 1 form(s)
15of 26 forms filed late

Last period with anything received: 2026-03-31. Most often over: Zinc, total recoverable (2), Di[2-ethylhexyl] phthalate [DEHP] (1), Copper, total recoverable (1).

Reporting

Reports are due about 60 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (230)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeINST MAX report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001TurbidityMO AVG <= 75 NTU all year
001TurbidityMO AVG <= 75 NTU all year
001TurbidityMO AVG <= 75 NTU all year
001TurbidityWKLY AVG <= 100 NTU all year
001TurbidityWKLY AVG <= 100 NTU all year
001TurbidityWKLY AVG <= 100 NTU all year
001TurbidityINST MAX <= 225 NTU all year
001TurbidityINST MAX <= 225 NTU all year
001TurbidityINST MAX <= 225 NTU all year
001TurbidityMO AVG <= 75 NTU all year
001TurbidityWKLY AVG <= 100 NTU all year
001TurbidityINST MAX <= 225 NTU all year
001RadioactivityDAILY MX 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. CDAILY MX report only all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001SalinityDAILY MX report only all year
001SalinityDAILY MX report only all year
001SalinityDAILY MX report only all year
001SalinityDAILY MX report only all year
001Solids, total suspendedINST MAX <= 60 mg/L all year
001Solids, total suspendedINST MAX <= 60 mg/L all year
001Solids, total suspendedINST MAX <= 60 mg/L all year
001Solids, total suspendedINST MAX <= 60 mg/L all year
001Solids, settleableMO AVG <= 1 mL/L all year
001Solids, settleableMO AVG <= 1 mL/L all year
001Solids, settleableMO AVG <= 1 mL/L all year
001Solids, settleableWKLY AVG <= 1.5 mL/L all year
001Solids, settleableWKLY AVG <= 1.5 mL/L all year
001Solids, settleableWKLY AVG <= 1.5 mL/L all year
001Solids, settleableINST MAX <= 3 mL/L all year
001Solids, settleableINST MAX <= 3 mL/L all year
001Solids, settleableINST MAX <= 3 mL/L all year
001Solids, settleableMO AVG <= 1 mL/L all year
001Solids, settleableWKLY AVG <= 1.5 mL/L all year
001Solids, settleableINST MAX <= 3 mL/L all year
001Oil & GreaseMO AVG <= 25 mg/L all year
001Oil & GreaseWKLY AVG <= 40 mg/L all year
001Oil & GreaseINST MAX <= 75 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Arsenic, total recoverable6A <= 8 ug/L all year
001Arsenic, total recoverable6A <= 8 ug/L all year
001Arsenic, total recoverable6A <= 8 ug/L all year
001Arsenic, total recoverableDAILY MX <= 32 ug/L all year
001Arsenic, total recoverableDAILY MX <= 32 ug/L all year
001Arsenic, total recoverableDAILY MX <= 32 ug/L all year
001Arsenic, total recoverableINST MAX <= 80 ug/L all year
001Arsenic, total recoverableINST MAX <= 80 ug/L all year
001Arsenic, total recoverableINST MAX <= 80 ug/L all year
001Arsenic, total recoverableDAILY MX report only all year
001Arsenic, total recoverableDAILY MX report only all year
001Selenium, total recoverableDAILY MX report only all year
001Selenium, total recoverableDAILY MX report only all year
001Selenium, total recoverableDAILY MX report only all year
001Selenium, total recoverableDAILY MX report only all year
001Thallium, total recoverableDAILY MX report only all year
001Thallium, total recoverableDAILY MX report only all year
001Thallium, total recoverableDAILY MX report only all year
001Thallium, total recoverableDAILY MX report only all year
001Beryllium, total recoverable [as Be]DAILY MX report only all year
001Beryllium, total recoverable [as Be]DAILY MX report only all year
001Beryllium, total recoverable [as Be]DAILY MX report only all year
001Beryllium, total recoverable [as Be]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Nickel, total recoverable6A <= 5 ug/L all year
001Nickel, total recoverable6A <= 5 ug/L all year
001Nickel, total recoverable6A <= 5 ug/L all year
001Nickel, total recoverableDAILY MX <= 20 ug/L all year
001Nickel, total recoverableDAILY MX <= 20 ug/L all year
001Nickel, total recoverableDAILY MX <= 20 ug/L all year
001Nickel, total recoverableINST MAX <= 50 ug/L all year
001Nickel, total recoverableINST MAX <= 50 ug/L all year
001Nickel, total recoverableINST MAX <= 50 ug/L all year
001Nickel, total recoverableDAILY MX report only all year
001Nickel, total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Zinc, total recoverable6A <= 20 ug/L all year
001Zinc, total recoverable6A <= 20 ug/L all year
001Zinc, total recoverable6A <= 20 ug/L all year
001Zinc, total recoverableDAILY MX <= 80 ug/L all year
001Zinc, total recoverableDAILY MX <= 80 ug/L all year
001Zinc, total recoverableDAILY MX <= 80 ug/L all year
001Zinc, total recoverableINST MAX <= 200 ug/L all year
001Zinc, total recoverableINST MAX <= 200 ug/L all year
001Zinc, total recoverableINST MAX <= 200 ug/L all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverable6A <= 2 ug/L all year
001Lead, total recoverable6A <= 2 ug/L all year
001Lead, total recoverable6A <= 2 ug/L all year
001Lead, total recoverableDAILY MX <= 8 ug/L all year
001Lead, total recoverableDAILY MX <= 8 ug/L all year
001Lead, total recoverableDAILY MX <= 8 ug/L all year
001Lead, total recoverableINST MAX <= 20 ug/L all year
001Lead, total recoverableINST MAX <= 20 ug/L all year
001Lead, total recoverableINST MAX <= 20 ug/L all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverable6A <= 3 ug/L all year
001Copper, total recoverable6A <= 3 ug/L all year
001Copper, total recoverable6A <= 3 ug/L all year
001Copper, total recoverableDAILY MX <= 12 ug/L all year
001Copper, total recoverableDAILY MX <= 12 ug/L all year
001Copper, total recoverableDAILY MX <= 12 ug/L all year
001Copper, total recoverableINST MAX <= 30 ug/L all year
001Copper, total recoverableINST MAX <= 30 ug/L all year
001Copper, total recoverableINST MAX <= 30 ug/L all year
001Copper, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Antimony, total recoverableDAILY MX report only all year
001Antimony, total recoverableDAILY MX report only all year
001Antimony, total recoverableDAILY MX report only all year
001Antimony, total recoverableDAILY MX report only all year
001Polynuclear Aromatic Hydrocarbons [PAHs]MO AVG <= .0088 ug/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]MO AVG <= .0088 ug/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]MO AVG <= .0088 ug/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
001Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 3.5 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 3.5 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 3.5 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX 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
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, totalMO TOTAL report only all year
001Flow, totalMO TOTAL report only all year
001Volume, totalMO TOTAL report only all year
001Volume, totalMO TOTAL report only all year
001Volume, totalMO TOTAL report only all year
001Polychlorinated biphenyls [PCBs], sum of Aroclors and CongenersDAILY MX report only all year
001Polychlorinated biphenyls [PCBs], sum of Aroclors and CongenersDAILY MX report only all year
001Polychlorinated biphenyls [PCBs], sum of Aroclors and CongenersDAILY MX report only all year
001Polychlorinated biphenyls [PCBs], sum of Aroclors and CongenersDAILY MX report only all year
001EnterococciDAILY MX report only all year
001Mercury, total recoverable6A <= .04 ug/L all year
001Mercury, total recoverable6A <= .04 ug/L all year
001Mercury, total recoverable6A <= .04 ug/L all year
001Mercury, total recoverableDAILY MX <= .16 ug/L all year
001Mercury, total recoverableDAILY MX <= .16 ug/L all year
001Mercury, total recoverableDAILY MX <= .16 ug/L all year
001Mercury, total recoverableINST MAX <= .4 ug/L all year
001Mercury, total recoverableINST MAX <= .4 ug/L all year
001Mercury, total recoverableINST MAX <= .4 ug/L all year
001Mercury, total recoverableDAILY MX report only all year
001Coliform, fecal generalDAILY MX report only all year
001Coliform, total generalDAILY MX report only all year
001Storm water flowDAILY MX report only all year
001Storm water flowDAILY MX report only all year
001Storm water flowDAILY MX report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisMAXIMUM report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppVALUE report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppVALUE report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppVALUE report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppMAXIMUM report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppMAXIMUM report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppMAXIMUM report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppVALUE report only all year
001Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus sppMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusMAXIMUM report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusVALUE report only all year
001Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusMAXIMUM report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaVALUE report only all year
001Chronic Mthd Germ Tube Length Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMAXIMUM report only all year

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