{"permit":"MS0051098","name":"HEARTLAND CATFISH COMPANY INC","state":"MS","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MS0051098"},"about":[{"label":"What it is","text":"Fresh Or Frozen Prepared Fish (EPA's industry listing)"},{"label":"Where","text":"Itta Bena, Mississippi","href":"https://www.openstreetmap.org/?mlat=33.527500&mlon=-90.301667#map=14/33.527500/-90.301667"},{"label":"Last 12 months","text":"Over a limit 7 times, last in September 2026 (Oil & Grease; pH). 7 of 13 reports filed late"},{"label":"Permit","text":"In force until Aug 31, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MS","sic":"20","permits":41,"list":"https://passage-data.com/api/v1/permits?state=MS&sic=20","page":"https://passage-data.com/dmr/s/MS/20"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":7,"over_by":[["Oil & Grease",5],["pH",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Oil & Grease","times":5,"find_limits":{"parameter":"oil grease","place":"US-MS","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=oil+grease&place=US-MS&medium=water_discharge"},{"parameter":"pH","times":2,"find_limits":{"parameter":"ph","place":"US-MS","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MS&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Total production - mass","parameter_code":"00145","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"Total production - mass","parameter_code":"00145","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. 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Runoff"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"1.5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"6","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"daily maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Process Wastewater & Storm Water Runoff"}],"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":"MS","sic":"20"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MS&sic=20","url":"https://passage-data.com/api/v1/permits?state=MS&sic=20","page":"https://passage-data.com/dmr/s/MS/20"},{"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":"oil grease","place":"US-MS","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=oil+grease&place=US-MS&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=oil+grease&place=US-MS&medium=water_discharge","page":"https://passage-data.com/limits/US-MS/oil-grease"},{"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":"MS0051098"},"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=MS0051098"},{"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":"MS0051098"},"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=MS0051098"}]}