{"permit":"MN0069051","name":"Saint Croix Forge Inc","state":"MN","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MN0069051"},"about":[{"label":"What it is","text":"Iron And Steel Forgings (EPA's industry listing)"},{"label":"Where","text":"Forest Lake, Minnesota","href":"https://www.openstreetmap.org/?mlat=45.2525628&mlon=-93.0006068#map=14/45.2525628/-93.0006068"},{"label":"Last 12 months","text":"Over a limit 5 times, last in March 2026 (pH; Solids, total suspended)"},{"label":"Permit","text":"In force until Oct 31, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MN","sic":"34","permits":2,"list":"https://passage-data.com/api/v1/permits?state=MN&sic=34"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":5,"over_by":[["pH",3],["Solids, total 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average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["DEC"],"limit_set":null},{"outfall":"D002","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"annual average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["DEC"],"limit_set":null},{"outfall":"D002","parameter":"Aluminum, total [as Al]","parameter_code":"01105","statistic":"annual average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["DEC"],"limit_set":null}],"next":[{"tool":"list_permits","says":"Screening this industry? list_permits lists every permit of it in this state in one call, each with its page and its get_permit address; `get` is the address to fetch.","arguments":{"state":"MN","sic":"34"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MN&sic=34","url":"https://passage-data.com/api/v1/permits?state=MN&sic=34"},{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"ph","place":"US-MN","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MN&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MN&medium=surface_water","page":"https://passage-data.com/limits/US-MN/ph"},{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"MN0069051"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=MN0069051"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"MN0069051"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=MN0069051"}]}