{"permit":"MI0001121","name":"General Motors LLC","state":"MI","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MI0001121"},"about":[{"label":"What it is","text":"Machine Tools, Metal Forming Types (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Bay City, Michigan","href":"https://www.openstreetmap.org/?mlat=43.6067&mlon=-83.8779#map=14/43.6067/-83.8779"},{"label":"Last 12 months","text":"No values over a limit. 14 required values not reported"},{"label":"Permit","text":"In force until Oct 1, 2030"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MI","sic":"35","permits":4,"list":"https://passage-data.com/api/v1/permits?state=MI&sic=35","page":"https://passage-data.com/dmr/s/MI/35"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":"<=","value":".5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":"<=","value":"25","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Sulfate, total [as SO4]","parameter_code":"00945","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Polychlorinated biphenyls [PCBs]","parameter_code":"39516","statistic":"maximum value","qualifier":"<","value":".2","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Equipment inspection - visual","parameter_code":"46478","statistic":"value","qualifier":null,"value":null,"unit":"N=0;Y=1","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"38","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001A"},{"outfall":"001","parameter":"Outfall observation,visual, y/n response","parameter_code":"84130","statistic":"value","qualifier":null,"value":null,"unit":"N=0;Y=1","report_only":true,"enforceable":true,"months":"all","limit_set":"001A"}],"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":"MI","sic":"35"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MI&sic=35","url":"https://passage-data.com/api/v1/permits?state=MI&sic=35","page":"https://passage-data.com/dmr/s/MI/35"},{"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":"MI0001121"},"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=MI0001121"},{"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":"MI0001121"},"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=MI0001121"}]}