{"state":"MI","as_of":"2026-10-15","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-15","page":"/dmr/p/MI","listed":"individual NPDES permits with limits in EPA's file; a general permit's coverages are not listed"},"filter":{"industry":null,"sic":"45","matched_on":"EPA's primary SIC code and its description","over_limit":null,"parameter":null,"renewal":null},"of":517,"without_industry":1,"matched":3,"offset":0,"returned":3,"screen":{"of":3,"window":["2025-10-01","2026-09-30"],"with_record":3,"without_record":0,"over_limit":3,"missing_values":2,"parameters_over":[{"parameter":"BOD, carbonaceous [5 day, 20 C]","permits":2},{"parameter":"Oil & Grease","permits":1}],"renewal":{"permit_expired":3,"application_overdue":0,"application_due_within_18_months":0},"says":"Of the 3 permits in EPA's SIC 45 in MI, 3 went over a limit between 2025-10-01 and 2026-09-30 (BOD, carbonaceous [5 day, 20 C]: 2; Oil & Grease: 1). 3 are past the expiry date EPA's file holds; 0 have 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=MI&sic=45&over_limit=true","parameter":{"BOD, carbonaceous [5 day, 20 C]":"https://passage-data.com/api/v1/permits?state=MI&sic=45&parameter=BOD%2C+carbonaceous+%5B5+day%2C+20+C%5D","Oil & Grease":"https://passage-data.com/api/v1/permits?state=MI&sic=45&parameter=Oil+%26+Grease"},"renewal_expired":"https://passage-data.com/api/v1/permits?state=MI&sic=45&renewal=expired"}},"permits":[{"permit":"MI0055735","name":"Gerald R Ford International Airport Authority","major":false,"sic":"4581","industry":"Airports, Flying Fields, & Services","record":{"over":4,"over_by":[["BOD, carbonaceous [5 day, 20 C]",4]],"missing":0},"expires":"2025-10-01","renewal":{"status":"permit_expired","application_due":"2025-04-04"},"page":"https://passage-data.com/dmr/p/MI0055735","json":"https://passage-data.com/api/v1/permits/MI0055735"},{"permit":"MI0055328","name":"Michigan Air National Guard","major":false,"sic":"4581","industry":"Airports, Flying Fields, & Services","record":{"over":5,"over_by":[["Oil & Grease",5]],"missing":86},"expires":"2015-10-01","renewal":{"status":"permit_expired","application_due":"2015-04-04"},"page":"https://passage-data.com/dmr/p/MI0055328","json":"https://passage-data.com/api/v1/permits/MI0055328"},{"permit":"MI0036846","name":"Wayne County Airport Authority","major":false,"sic":"4581","industry":"Airports, Flying Fields, & Services","record":{"over":1,"over_by":[["BOD, carbonaceous [5 day, 20 C]",1]],"missing":116},"expires":"2017-10-01","renewal":{"status":"permit_expired","application_due":"2017-04-04"},"page":"https://passage-data.com/dmr/p/MI0036846","json":"https://passage-data.com/api/v1/permits/MI0036846"}]}