{"permit":"CT0000434","name":"AHLSTROM NONWOVENS LLC","state":"CT","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/CT0000434"},"about":[{"label":"What it is","text":"Paper Mills (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Windsor Locks, Connecticut","href":"https://www.openstreetmap.org/?mlat=41.926111&mlon=-72.626667#map=14/41.926111/-72.626667"},{"label":"Last 12 months","text":"Over a limit once, last in December 2025 (LC50 Static 48Hr Acute Pimephales promelas). 9 of 91 reports filed late"},{"label":"Permit","text":"In force until Jan 31, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"CT","sic":"26","permits":4,"list":"https://passage-data.com/api/v1/permits?state=CT&sic=26","page":"https://passage-data.com/dmr/s/CT/26"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":1,"over_by":[["LC50 Static 48Hr Acute Pimephales promelas",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"008","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"instantaneous maximum","qualifier":"<=","value":"110","unit":"deg F","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","SEP","OCT","NOV"],"limit_set":"Combined discharge of NCCWDSNs 08A, 08B, 08C, 08D and 08E)"},{"outfall":"008","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"instantaneous maximum","qualifier":"<=","value":"95","unit":"deg F","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","DEC"],"limit_set":"Combined discharge of NCCWDSNs 08A, 08B, 08C, 08D and 08E)"},{"outfall":"008","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"instantaneous maximum","qualifier":"<=","value":"115","unit":"deg F","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"Combined discharge of NCCWDSNs 08A, 08B, 08C, 08D and 08E)"},{"outfall":"008","parameter":"Flow rate","parameter_code":"00056","statistic":"monthly average","qualifier":"<=","value":"6","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"Combined discharge of NCCWDSNs 08A, 08B, 08C, 08D and 08E)"},{"outfall":"008","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly average minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Combined discharge of NCCWDSNs 08A, 08B, 08C, 08D and 08E)"},{"outfall":"008","parameter":"BOD, 5-day, 20 deg. 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