{"permit":"IA0075451","name":"ADVANCED HEAT TREAT CORPORATION","state":"IA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/IA0075451"},"about":[{"label":"What it is","text":"Metal Heat Treating (EPA's industry listing)"},{"label":"Where","text":"Waterloo, Iowa","href":"https://www.openstreetmap.org/?mlat=42.54692&mlon=-92.3924#map=14/42.54692/-92.3924"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Jan 31, 2031"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"IA","sic":"33","permits":7,"list":"https://passage-data.com/api/v1/permits?state=IA&sic=33","page":"https://passage-data.com/dmr/s/IA/33"},"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":"30-day average","qualifier":"<=","value":"73.8","unit":"deg F","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":["AUG"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"30-day average","qualifier":"<=","value":"74.6","unit":"deg F","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"MONTHLY"},{"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":"MONTHLY"},{"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"}],"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":"IA","sic":"33"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=IA&sic=33","url":"https://passage-data.com/api/v1/permits?state=IA&sic=33","page":"https://passage-data.com/dmr/s/IA/33"},{"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":"IA0075451"},"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=IA0075451"},{"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":"IA0075451"},"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=IA0075451"}]}