{"permit":"MT0032247","name":"Montana DEQ                                                                     ","state":"MT","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MT0032247"},"about":[{"label":"What it is","text":"Water, Sewer, And Utility Lines (EPA's industry listing)"},{"label":"Where","text":"Belt, Montana","href":"https://www.openstreetmap.org/?mlat=47.3787082&mlon=-110.937109#map=14/47.3787082/-110.937109"},{"label":"Last 12 months","text":"Over a limit 36 times, last in August 2026 (Iron, total [as Fe]; Aluminum, dissolved [as Al]; Zinc, total recoverable). 2 required values not reported. 2 of 9 reports filed late"},{"label":"Permit","text":"In force until Nov 20, 2030"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MT","sic":"16","permits":4,"list":"https://passage-data.com/api/v1/permits?state=MT&sic=16","page":"https://passage-data.com/dmr/s/MT/16"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":36,"over_by":[["Iron, total [as Fe]",16],["Aluminum, dissolved [as Al]",10],["Zinc, total recoverable",7]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Iron, total [as Fe]","times":16,"find_limits":{"parameter":"iron","place":"US-MT","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-MT&medium=surface_water"},{"parameter":"Aluminum, dissolved [as Al]","times":10,"find_limits":{"parameter":"aluminum","place":"US-MT","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=aluminum&place=US-MT&medium=surface_water"},{"parameter":"Zinc, total recoverable","times":7,"find_limits":{"parameter":"zinc","place":"US-MT","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=zinc&place=US-MT&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Flow rate","parameter_code":"00056","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Flow rate","parameter_code":"00056","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Conductivity","parameter_code":"00094","statistic":"monthly average","qualifier":null,"value":null,"unit":"uS/cm","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Conductivity","parameter_code":"00094","statistic":"daily maximum","qualifier":null,"value":null,"unit":"uS/cm","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"35","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"70","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Arsenic, total recoverable","parameter_code":"00978","statistic":"monthly average","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Arsenic, total recoverable","parameter_code":"00978","statistic":"daily maximum","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Iron, total [as Fe]","parameter_code":"01045","statistic":"monthly average","qualifier":"<=","value":"3.5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Iron, total [as Fe]","parameter_code":"01045","statistic":"daily maximum","qualifier":"<=","value":"7","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Manganese, total [as Mn]","parameter_code":"01055","statistic":"monthly average","qualifier":"<=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Manganese, total [as Mn]","parameter_code":"01055","statistic":"daily maximum","qualifier":"<=","value":"4","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Zinc, total recoverable","parameter_code":"01094","statistic":"monthly average","qualifier":"<=","value":"146","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Zinc, total recoverable","parameter_code":"01094","statistic":"daily maximum","qualifier":"<=","value":"292","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Aluminum, dissolved [as Al]","parameter_code":"01106","statistic":"monthly average","qualifier":"<=","value":"71","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Aluminum, dissolved [as Al]","parameter_code":"01106","statistic":"daily maximum","qualifier":"<=","value":"143","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Cadmium, total recoverable","parameter_code":"01113","statistic":"monthly average","qualifier":"<=","value":"1.6","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Cadmium, total recoverable","parameter_code":"01113","statistic":"daily maximum","qualifier":"<=","value":"3.1","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Lead, total recoverable","parameter_code":"01114","statistic":"monthly average","qualifier":"<=","value":"12","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Lead, total recoverable","parameter_code":"01114","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"monthly average","qualifier":"<=","value":"19","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"},{"outfall":"001","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"daily maximum","qualifier":"<=","value":"37","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY MONITORING OUTFALL 001"}],"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":"MT","sic":"16"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MT&sic=16","url":"https://passage-data.com/api/v1/permits?state=MT&sic=16","page":"https://passage-data.com/dmr/s/MT/16"},{"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":"iron","place":"US-MT","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-MT&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-MT&medium=surface_water","page":"https://passage-data.com/limits/US-MT/iron"},{"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":"MT0032247"},"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=MT0032247"},{"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":"MT0032247"},"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=MT0032247"}]}