{"permit":"LA0127094","name":"MATHESON TRI-GAS, INC.","state":"LA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/LA0127094"},"about":[{"label":"What it is","text":"Industrial Gases (EPA's industry listing)"},{"label":"Where","text":"Westlake, Louisiana","href":"https://www.openstreetmap.org/?mlat=30.252472&mlon=-93.312000#map=14/30.252472/-93.312000"},{"label":"Last 12 months","text":"Over a limit 9 times, last in September 2026 (Cyanide, total [as CN]; Copper, total [as Cu]; Phenolics, total recoverable)"},{"label":"Permit","text":"In force until Dec 14, 2027"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2027-06-17","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/LA0127094#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":{"state":"LA","sic":"28","permits":130,"list":"https://passage-data.com/api/v1/permits?state=LA&sic=28","page":"https://passage-data.com/dmr/s/LA/28"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":9,"over_by":[["Cyanide, total [as CN]",5],["Copper, total [as Cu]",2],["Phenolics, total recoverable",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Cyanide, total [as CN]","times":5,"find_limits":{"parameter":"cyanide","place":"US-LA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-LA&medium=surface_water"},{"parameter":"Copper, total [as Cu]","times":2,"find_limits":{"parameter":"copper","place":"US-LA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-LA&medium=surface_water"},{"parameter":"Phenolics, total 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parameter.","arguments":{"parameter":"cyanide","place":"US-LA","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-LA&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-LA&medium=surface_water","page":"https://passage-data.com/limits/US-LA/cyanide"},{"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":"LA0127094"},"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=LA0127094"},{"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":"LA0127094"},"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=LA0127094"}]}