{"permit":"AR0037745","name":"Little Rock, City of-Little Rock Zoological Gardens","state":"AR","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/AR0037745"},"about":[{"label":"What it is","text":"Botanical And Zoological Gardens (EPA's industry listing)"},{"label":"Where","text":"Little Rock, Arkansas","href":"https://www.openstreetmap.org/?mlat=34.747194&mlon=-92.330278#map=14/34.747194/-92.330278"},{"label":"Last 12 months","text":"Over a limit 5 times, last in April 2026 (Chlorine, total residual; Oxygen, dissolved [DO]). 6 of 36 reports filed late"},{"label":"Permit","text":"Expired May 31, 2026; its limits still apply until a new permit is issued, and EPA still expects the reports"}],"renewal_due":null,"renewal_check":{"offered_because":"permit_expired","application_due":"2025-12-02","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/AR0037745#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":"AR","sic":"84","permits":2,"list":"https://passage-data.com/api/v1/permits?state=AR&sic=84"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":5,"over_by":[["Chlorine, total residual",4],["Oxygen, dissolved [DO]",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Chlorine, total residual","times":4,"find_limits":{"parameter":"chlorine","place":"US-AR","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-AR&medium=surface_water"}],"limits":[{"outfall":"002","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"002-Seasonal Qtr-Washwater/Runoff"},{"outfall":"002","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"002-Seasonal Qtr-Washwater/Runoff"},{"outfall":"002","parameter":"Oxygen demand, chem. 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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":"AR","sic":"84"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=AR&sic=84","url":"https://passage-data.com/api/v1/permits?state=AR&sic=84"},{"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":"chlorine","place":"US-AR","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-AR&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-AR&medium=surface_water","page":"https://passage-data.com/limits/US-AR/chlorine"},{"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":"AR0037745"},"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=AR0037745"},{"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":"AR0037745"},"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=AR0037745"}]}