{"permit":"AR0052558","name":"Spring Cr Materials, Inc. - Cooper Site","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/AR0052558"},"about":[{"label":"What it is","text":"Construction Sand And Gravel (EPA's industry listing)"},{"label":"Where","text":"Oxford, Arkansas","href":"https://www.openstreetmap.org/?mlat=36.223333&mlon=-91.889778#map=14/36.223333/-91.889778"},{"label":"Last 12 months","text":"No values over a limit. 5 of 11 reports filed late"},{"label":"Permit","text":"Expired Jun 30, 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":"2026-01-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/AR0052558#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":"14","permits":30,"list":"https://passage-data.com/api/v1/permits?state=AR&sic=14","page":"https://passage-data.com/dmr/s/AR/14"},"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":"Turbidity","parameter_code":"00070","statistic":"instantaneous maximum","qualifier":"<=","value":"17","unit":"NTU","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Oxygen demand, chem. [low level] [COD]","parameter_code":"00335","statistic":"monthly average","qualifier":"<=","value":"50","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Oxygen demand, chem. [low level] [COD]","parameter_code":"00335","statistic":"daily maximum","qualifier":"<=","value":"75","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"001-Monthly-Stormwater Sand/Gravel Mine"}],"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":"AR","sic":"14"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=AR&sic=14","url":"https://passage-data.com/api/v1/permits?state=AR&sic=14","page":"https://passage-data.com/dmr/s/AR/14"},{"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":"AR0052558"},"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=AR0052558"},{"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":"AR0052558"},"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=AR0052558"}]}