{"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":"4911","matched_on":"EPA's primary SIC code and its description","over_limit":null,"parameter":null,"renewal":null},"of":151,"without_industry":0,"matched":3,"offset":0,"returned":3,"screen":{"of":3,"window":["2025-10-01","2026-09-30"],"with_record":3,"without_record":0,"over_limit":1,"missing_values":0,"parameters_over":[{"parameter":"Copper, total recoverable","permits":1}],"renewal":{"permit_expired":2,"application_overdue":1,"application_due_within_18_months":0},"says":"Of the 3 permits in EPA's SIC 4911 in MT, 1 went over a limit between 2025-10-01 and 2026-09-30 (Copper, total recoverable: 1). 2 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=4911&over_limit=true","parameter":{"Copper, total recoverable":"https://passage-data.com/api/v1/permits?state=MT&sic=4911&parameter=Copper%2C+total+recoverable"},"renewal_expired":"https://passage-data.com/api/v1/permits?state=MT&sic=4911&renewal=expired","renewal_due":"https://passage-data.com/api/v1/permits?state=MT&sic=4911&renewal=due"}},"permits":[{"permit":"MT0031780","name":"COLSTRIP ENERGY LIMITED PARTNERSHIP                                             ","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-12-31","renewal":{"status":"application_overdue","application_due":"2026-07-04"},"page":"https://passage-data.com/dmr/p/MT0031780","json":"https://passage-data.com/api/v1/permits/MT0031780"},{"permit":"MT0022578","name":"US BUREAU OF RECLAMATION                                                        ","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-08-31","renewal":{"status":"permit_expired","application_due":"2026-03-04"},"page":"https://passage-data.com/dmr/p/MT0022578","json":"https://passage-data.com/api/v1/permits/MT0022578"},{"permit":"MT0030180","name":"YELLOWSTONE ENERGY LIMITED PARTNERSHIP                                          ","major":false,"sic":"4911","industry":"Electric Services","record":{"over":20,"over_by":[["Copper, total recoverable",20]],"missing":0},"expires":"2019-04-30","renewal":{"status":"permit_expired","application_due":"2018-11-01"},"page":"https://passage-data.com/dmr/p/MT0030180","json":"https://passage-data.com/api/v1/permits/MT0030180"}]}