{"state":"MD","as_of":"2026-10-15","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-15","page":"/dmr/p/MD","listed":"individual NPDES permits with limits in EPA's file; a general permit's coverages are not listed"},"filter":{"industry":null,"sic":"37","matched_on":"EPA's primary SIC code and its description","over_limit":null,"parameter":null,"renewal":null},"of":393,"without_industry":24,"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 [as Cu]","permits":1},{"parameter":"Zinc, total [as Zn]","permits":1}],"renewal":{"permit_expired":0,"application_overdue":0,"application_due_within_18_months":3},"says":"Of the 3 permits in EPA's SIC 37 in MD, 1 went over a limit between 2025-10-01 and 2026-09-30 (Copper, total [as Cu]: 1; Zinc, total [as Zn]: 1). 0 are past the expiry date EPA's file holds; 3 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=MD&sic=37&over_limit=true","parameter":{"Copper, total [as Cu]":"https://passage-data.com/api/v1/permits?state=MD&sic=37&parameter=Copper%2C+total+%5Bas+Cu%5D","Zinc, total [as Zn]":"https://passage-data.com/api/v1/permits?state=MD&sic=37&parameter=Zinc%2C+total+%5Bas+Zn%5D"},"renewal_due":"https://passage-data.com/api/v1/permits?state=MD&sic=37&renewal=due"}},"permits":[{"permit":"MD0001180","name":"BWI SPARROWS POINT, LLC","major":false,"sic":"3731","industry":"Ship Building And Repairing","record":{"over":0,"over_by":[],"missing":0},"expires":"2028-01-31","renewal":{"status":"application_due_within_18_months","application_due":"2027-08-04"},"page":"https://passage-data.com/dmr/p/MD0001180","json":"https://passage-data.com/api/v1/permits/MD0001180"},{"permit":"MD0000078","name":"NORTHROP GRUMMAN SYSTEMS CORPORATION, ELKTON","major":false,"sic":"3764","industry":"Space Propulsion Units And Parts","record":{"over":0,"over_by":[],"missing":0},"expires":"2028-07-31","renewal":{"status":"application_due_within_18_months","application_due":"2028-02-02"},"page":"https://passage-data.com/dmr/p/MD0000078","json":"https://passage-data.com/api/v1/permits/MD0000078"},{"permit":"MD0067300","name":"U.S. COAST GUARD - BALTIMORE Y","major":false,"sic":"3731","industry":"Ship Building And Repairing","record":{"over":7,"over_by":[["Copper, total [as Cu]",4],["Zinc, total [as Zn]",3]],"missing":0},"expires":"2027-05-31","renewal":{"status":"application_due_within_18_months","application_due":"2026-12-02"},"page":"https://passage-data.com/dmr/p/MD0067300","json":"https://passage-data.com/api/v1/permits/MD0067300"}]}