{"permit":"SD0000027","name":"GCC Dacotah","state":"SD","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/SD0000027"},"about":[{"label":"What it is","text":"Cement, Hydraulic (EPA's industry listing)"},{"label":"Where","text":"Rapid City, South Dakota","href":"https://www.openstreetmap.org/?mlat=44.0869440&mlon=-103.265861#map=14/44.0869440/-103.265861"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"Expired Sep 30, 2013; 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":"2013-04-03","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SD0000027#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":null,"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":"001","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the wet kiln cooling line to settling pond # 1."},{"outfall":"001","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the wet kiln cooling line to settling pond # 1."},{"outfall":"001","parameter":"Flow rate","parameter_code":"00056","statistic":"30-day 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1."},{"outfall":"001","parameter":"Alkalinity, total [as CaCO3]","parameter_code":"00410","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the wet kiln cooling line to settling pond # 1."},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the wet kiln cooling line to settling pond # 1."},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the wet kiln cooling line to settling pond # 1."},{"outfall":"001","parameter":"Oil and grease, hexane extr method","parameter_code":"00552","statistic":"daily 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Lime Creek North."},{"outfall":"003","parameter":"Flow, process wastewater","parameter_code":"78886","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the recycle pond to Lime Creek North."},{"outfall":"003","parameter":"Oil and grease visual","parameter_code":"84066","statistic":"daily maximum","qualifier":"<=","value":"0","unit":"N=0;Y=1","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the recycle pond to Lime Creek North."},{"outfall":"004","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge of storm water runoff from detention pond A unnamed tributary of Spring Pond."},{"outfall":"004","parameter":"Temperature, water deg. 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