{"permit":"MS0001686","name":"HUNT SOUTHLAND REFINING CO LLC","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/MS0001686"},"about":[{"label":"What it is","text":"Petroleum Refining (EPA's industry listing)"},{"label":"Where","text":"Heidelerg, Mississippi","href":"https://www.openstreetmap.org/?mlat=31.814611&mlon=-89.009028#map=14/31.814611/-89.009028"},{"label":"Last 12 months","text":"Over a limit 2 times, last in August 2026 (Solids, total suspended)"},{"label":"Permit","text":"In force until Jul 31, 2031"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MS","sic":"29","permits":6,"list":"https://passage-data.com/api/v1/permits?state=MS&sic=29","page":"https://passage-data.com/dmr/s/MS/29"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":2,"over_by":[["Solids, total suspended",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Solids, total 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solids","place":"US-MS","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=total+suspended+solids&place=US-MS&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=total+suspended+solids&place=US-MS&medium=water_discharge","page":"https://passage-data.com/limits/US-MS/total-suspended-solids"},{"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":"MS0001686"},"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=MS0001686"},{"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":"MS0001686"},"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=MS0001686"}]}