{"permit":"TN0073237","name":"W. R. Grace & Co.","state":"TN","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/TN0073237"},"about":[{"label":"What it is","text":"Industrial Inorganic Chemicals (EPA's industry listing)"},{"label":"Where","text":"Chattanooga, Tennessee","href":"https://www.openstreetmap.org/?mlat=35.087272&mlon=-85.249936#map=14/35.087272/-85.249936"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until May 31, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"TN","sic":"28","permits":30,"list":"https://passage-data.com/api/v1/permits?state=TN&sic=28","page":"https://passage-data.com/dmr/s/TN/28"},"limits_from_version":null,"record":{"last_filed":"2026-06-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"01A","parameter":"pH","parameter_code":"00400","statistic":"value","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Internal Monitoring 01A"},{"outfall":"01A","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Internal Monitoring 01A"},{"outfall":"01A","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily 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01A"},{"outfall":"01A","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Internal Monitoring 01A"},{"outfall":"01A","parameter":"Iron, total [as Fe]","parameter_code":"01045","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Internal Monitoring 01A"},{"outfall":"01A","parameter":"Aluminum, total [as Al]","parameter_code":"01105","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Internal Monitoring 01A"},{"outfall":"01A","parameter":"Oil and grease","parameter_code":"03582","statistic":"daily 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P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall SWE2"},{"outfall":"SWE2","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"rolling average","qualifier":"<=","value":".62","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall SWE2"},{"outfall":"SWE2","parameter":"Magnesium, total [as Mg]","parameter_code":"00927","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall SWE2"},{"outfall":"SWE2","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall 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reporting for Outfall SWE2"},{"outfall":"SWE2","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":"Semiannual reporting for Outfall SWE2"},{"outfall":"SWE2","parameter":"LC50 Static 48Hr Acute Ceriodaphnia dubia","parameter_code":"TAA3B","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall SWE2"},{"outfall":"SWE2","parameter":"LC50 Static 48Hr Acute Pimephales promelas","parameter_code":"TAA6C","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"Semiannual reporting for Outfall SWE2"}],"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":"TN","sic":"28"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=TN&sic=28","url":"https://passage-data.com/api/v1/permits?state=TN&sic=28","page":"https://passage-data.com/dmr/s/TN/28"},{"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":"TN0073237"},"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=TN0073237"},{"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":"TN0073237"},"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=TN0073237"}]}