{"state":"MT","as_of":"2026-10-15","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-15","page":"/dmr/p/MT","listed":"individual NPDES permits with limits in EPA's file; a general permit's coverages are not listed"},"filter":{"industry":null,"sic":"29","matched_on":"EPA's primary SIC code and its description","over_limit":null,"parameter":null,"renewal":null},"of":151,"without_industry":0,"matched":4,"offset":0,"returned":4,"screen":{"of":4,"window":["2025-10-01","2026-09-30"],"with_record":4,"without_record":0,"over_limit":2,"missing_values":0,"parameters_over":[{"parameter":"Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas","permits":2},{"parameter":"Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia","permits":1}],"renewal":{"permit_expired":3,"application_overdue":0,"application_due_within_18_months":1},"says":"Of the 4 permits in EPA's SIC 29 in MT, 2 went over a limit between 2025-10-01 and 2026-09-30 (Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas: 2; Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia: 1). 3 are past the expiry date EPA's file holds; 1 has a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.","narrow":{"over_limit":"https://passage-data.com/api/v1/permits?state=MT&sic=29&over_limit=true","parameter":{"Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas":"https://passage-data.com/api/v1/permits?state=MT&sic=29&parameter=Pass%2FFail+Static+Renewal+96Hr+Acute+Pimephales+Promelas","Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia":"https://passage-data.com/api/v1/permits?state=MT&sic=29&parameter=Pass%2FFail+Static+Renewal+48Hr+Acute+Ceriodaphnia+dubia"},"renewal_expired":"https://passage-data.com/api/v1/permits?state=MT&sic=29&renewal=expired","renewal_due":"https://passage-data.com/api/v1/permits?state=MT&sic=29&renewal=due"}},"permits":[{"permit":"MT0000264","name":"CHS INC                                                                         ","major":true,"sic":"2911","industry":"Petroleum Refining","record":{"over":4,"over_by":[["Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas",3],["Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia",1]],"missing":0},"expires":"2027-10-31","renewal":{"status":"application_due_within_18_months","application_due":"2027-05-04"},"page":"https://passage-data.com/dmr/p/MT0000264","json":"https://passage-data.com/api/v1/permits/MT0000264"},{"permit":"MT0000256","name":"PHILLIPS 66  BILLINGS REFINERY                                                  ","major":true,"sic":"2911","industry":"Petroleum Refining","record":{"over":0,"over_by":[],"missing":0},"expires":"2021-07-31","renewal":{"status":"permit_expired","application_due":"2021-02-01"},"page":"https://passage-data.com/dmr/p/MT0000256","json":"https://passage-data.com/api/v1/permits/MT0000256"},{"permit":"MT0000477","name":"Par Montana, LLC.                                                               ","major":true,"sic":"2911","industry":"Petroleum Refining","record":{"over":1,"over_by":[["Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas",1]],"missing":0},"expires":"2020-07-31","renewal":{"status":"permit_expired","application_due":"2020-02-02"},"page":"https://passage-data.com/dmr/p/MT0000477","json":"https://passage-data.com/api/v1/permits/MT0000477"},{"permit":"MT0028321","name":"Par Montana, LLC.                                                               ","major":false,"sic":"2911","industry":"Petroleum Refining","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-01-31","renewal":{"status":"permit_expired","application_due":"2025-08-04"},"page":"https://passage-data.com/dmr/p/MT0028321","json":"https://passage-data.com/api/v1/permits/MT0028321"}]}