Passage Data · Check a report · Use it from your AI
Petroleum Refining, major discharger, Laurel, Montana. NPDES permit MT0000264, in force until Oct 31, 2027. Last 12 months: over a limit 4 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| December 2025 | Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia, value | 1 pass=0;fail=1 | ≤ 0 pass=0;fail=1 |
| December 2025 | Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas, value | 1 pass=0;fail=1 | ≤ 0 pass=0;fail=1 |
| March 2026 | Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas, value | 1 pass=0;fail=1 | ≤ 0 pass=0;fail=1 |
| June 2026 | Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas, value | 1 pass=0;fail=1 | ≤ 0 pass=0;fail=1 |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Flow rate | monthly average | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| Conductivity | monthly average | report only (uS/cm) | all year | 002 |
| Conductivity | daily maximum | report only (uS/cm) | all year | 002 |
| Alpha emitting radium isotopes, dissolved | value | report only (pCi/L) | all year | 002 |
| Alpha emitting radium isotopes, dissolved | monthly average | report only (pCi/L) | all year | 002 |
| Alpha emitting radium isotopes, dissolved | daily maximum | report only (pCi/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 331 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 620 lb/d | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| pH | minimum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| Solids, total suspended | monthly average | ≤ 339 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 532 lb/d | all year | 002 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 002 |
| Oil and grease, hexane extr method | monthly average | ≤ 128 lb/d | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 242 lb/d | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | Aug–Oct | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | Aug–Oct | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | Aug–Oct | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | Aug–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 191 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 418 lb/d | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Aug–Oct | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Aug–Oct | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Aug–Oct | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Aug–Oct | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Aug–Oct | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Aug–Oct | 002 |
| Sulfide, total [as S] | monthly average | report only (ug/L) | all year | 002 |
| Sulfide, total [as S] | daily maximum | report only (ug/L) | all year | 002 |
| Sulfide, total [as S] | monthly average | ≤ 1.8 lb/d | all year | 002 |
| Sulfide, total [as S] | daily maximum | ≤ 3.9 lb/d | all year | 002 |
| Sulfide, dissolved, [as S] | monthly average | report only (ug/L) (alert, not enforceable) | all year | 002 |
| Sulfide, dissolved, [as S] | daily maximum | report only (ug/L) (alert, not enforceable) | all year | 002 |
| Sulfide, dissolved, [as S] | monthly average | report only (ug/L) | all year | 002 |
| Sulfide, dissolved, [as S] | daily maximum | report only (ug/L) | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Fluoride | value | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | monthly average | ≤ 13 ug/L | all year | 002 |
| Arsenic, total recoverable | daily maximum | ≤ 19 ug/L | all year | 002 |
| Iron, total recoverable | value | report only (ug/L) | all year | 002 |
| Iron, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | value | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, hexavalent [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ .36 lb/d | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .99 lb/d | all year | 002 |
| Aluminum, dissolved [as Al] | value | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | monthly average | report only (ug/L) | all year | 002 |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | value | report only (ug/L) | all year | 002 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total recoverable | monthly average | ≤ 5.2 lb/d | all year | 002 |
| Chromium, total recoverable | daily maximum | ≤ 9.1 lb/d | all year | 002 |
| Cyanide [A] | value | report only (ug/L) | all year | 002 |
| Cyanide [A] | monthly average | report only (ug/L) | all year | 002 |
| Cyanide [A] | daily maximum | report only (ug/L) | all year | 002 |
| Radium 228, total | value | report only (pCi/L) | all year | 002 |
| Radium 228, total | monthly average | report only (pCi/L) | all year | 002 |
| Radium 228, total | daily maximum | report only (pCi/L) | all year | 002 |
| Phenol | monthly average | report only (ug/L) | all year | 002 |
| Phenol | daily maximum | report only (ug/L) | all year | 002 |
| Phenol | monthly average | ≤ 2.2 lb/d | all year | 002 |
| Phenol | daily maximum | ≤ 4.5 lb/d | all year | 002 |
| Nitrogen, total Kjeldahl | monthly average | report only (mg/L) | Aug–Oct | 002 |
| Chlorine, total residual | monthly average | report only (ug/L) | all year | 002 |
| Chlorine, total residual | daily maximum | report only (ug/L) | all year | 002 |
| Beta/photon emitters | value | report only (mrems/yr) | all year | 002 |
| Beta/photon emitters | monthly average | report only (mrems/yr) | all year | 002 |
| Beta/photon emitters | daily maximum | report only (mrems/yr) | all year | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Hydrogen sulfide | monthly average | ≤ 19.999 ug/L | all year | 002 |
| Hydrogen sulfide | daily maximum | ≤ 19.999 ug/L | all year | 002 |
| Hydrogen sulfide | monthly average | report only (ug/L) | all year | 002 |
| Hydrogen sulfide | daily maximum | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | value | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | monthly average | ≤ 2288 lb/d | all year | 002 |
| Chemical Oxygen Demand [COD] | daily maximum | ≤ 4425 lb/d | all year | 002 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | value | ≤ 0 pass=0;fail=1 | all year | 002 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | value | ≤ 0 pass=0;fail=1 | all year | 002 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| Flow rate | monthly average | report only (MGD) | all year | 003 |
| Flow rate | daily maximum | report only (MGD) | all year | 003 |
| Alpha emitting radium isotopes, dissolved | value | report only (pCi/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 331 lb/d | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 620 lb/d | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 339 lb/d | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 532 lb/d | all year | 003 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 003 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 003 |
| Oil and grease, hexane extr method | monthly average | ≤ 128 lb/d | all year | 003 |
| Oil and grease, hexane extr method | daily maximum | ≤ 242 lb/d | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | Aug–Oct | 003 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | Aug–Oct | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 191 lb/d | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 418 lb/d | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Aug–Oct | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Aug–Oct | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Aug–Oct | 003 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Aug–Oct | 003 |
| Sulfide, total [as S] | monthly average | report only (ug/L) | all year | 003 |
| Sulfide, total [as S] | daily maximum | report only (ug/L) | all year | 003 |
| Sulfide, total [as S] | monthly average | ≤ 1.8 lb/d | all year | 003 |
| Sulfide, total [as S] | daily maximum | ≤ 3.9 lb/d | all year | 003 |
| Sulfide, dissolved, [as S] | monthly average | report only (ug/L) | all year | 003 |
| Sulfide, dissolved, [as S] | daily maximum | report only (ug/L) | all year | 003 |
| Fluoride | value | report only (mg/L) | all year | 003 |
| Arsenic, total recoverable | monthly average | ≤ 13 ug/L | all year | 003 |
| Arsenic, total recoverable | daily maximum | ≤ 19 ug/L | all year | 003 |
| Iron, total recoverable | value | report only (ug/L) | all year | 003 |
| Selenium, total recoverable | value | report only (ug/L) | all year | 003 |
| Chromium, hexavalent [as Cr] | monthly average | report only (ug/L) | all year | 003 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year | 003 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ .36 lb/d | all year | 003 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 1 lb/d | all year | 003 |
| Aluminum, dissolved [as Al] | value | report only (ug/L) | all year | 003 |
| Lead, total recoverable | value | report only (ug/L) | all year | 003 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Chromium, total recoverable | monthly average | ≤ 5.2 lb/d | all year | 003 |
| Chromium, total recoverable | daily maximum | ≤ 9.1 lb/d | all year | 003 |
| Cyanide [A] | value | report only (ug/L) | all year | 003 |
| Radium 228, total | value | report only (pCi/L) | all year | 003 |
| Phenol | monthly average | report only (ug/L) | all year | 003 |
| Phenol | daily maximum | report only (ug/L) | all year | 003 |
| Phenol | monthly average | ≤ 2.2 lb/d | all year | 003 |
| Phenol | daily maximum | ≤ 4.5 lb/d | all year | 003 |
| Nitrogen, total Kjeldahl | monthly average | report only (mg/L) | Aug–Oct | 003 |
| Chlorine, total residual | monthly average | ≤ 170 ug/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ 400 ug/L | all year | 003 |
| Beta/photon emitters | value | report only (mrems/yr) | all year | 003 |
| Hydrogen sulfide | monthly average | ≤ 19.999 ug/L | all year | 003 |
| Hydrogen sulfide | daily maximum | ≤ 19.999 ug/L | all year | 003 |
| Mercury, total recoverable | value | report only (ug/L) | all year | 003 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 003 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 003 |
| Chemical Oxygen Demand [COD] | monthly average | ≤ 2288 lb/d | all year | 003 |
| Chemical Oxygen Demand [COD] | daily maximum | ≤ 4425 lb/d | all year | 003 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | value | ≤ 0 pass=0;fail=1 | all year | 003 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | value | ≤ 0 pass=0;fail=1 | all year | 003 |
Cited limits by parameter: Montana's rules and the federal ones.
Same industry: the 4 Petroleum Refining and Related Industries permits in Montana.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MT0000264 · MCP: https://passage-data.com/mcp