{"permit":"MD0072214","name":"Concrete General Inc","state":"MD","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MD0072214"},"about":[{"label":"What it is","text":"Industrial or other facility"},{"label":"Where","text":"Gaithersburg, Maryland","href":"https://www.openstreetmap.org/?mlat=39.16478&mlon=-77.16451#map=14/39.16478/-77.16451"},{"label":"Last 12 months","text":"No values over a limit. 5 of 5 reports filed late"},{"label":"Permit","text":"In force until Jun 30, 2031"}],"renewal_due":null,"renewal_check":null,"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":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"26-DP-2776"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"8.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"26-DP-2776"},{"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":"26-DP-2776"},{"outfall":"001","parameter":"Suspended Solids, Total","parameter_code":"51530","statistic":"maximum monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"26-DP-2776"},{"outfall":"001","parameter":"Suspended Solids, Total","parameter_code":"51530","statistic":"daily maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"26-DP-2776"},{"outfall":"001","parameter":"Temp. difference, summer [deg. F]","parameter_code":"70013","statistic":"daily maximum","qualifier":"<=","value":"0","unit":"deg F","report_only":false,"enforceable":true,"months":"all","limit_set":"Temp Difference"},{"outfall":"001","parameter":"Temp. difference, winter [deg. F]","parameter_code":"70014","statistic":"daily maximum","qualifier":"<=","value":"0","unit":"deg F","report_only":false,"enforceable":true,"months":"all","limit_set":"Temp Difference"},{"outfall":"001","parameter":"Flow","parameter_code":"74076","statistic":"daily maximum","qualifier":null,"value":null,"unit":"gal/d","report_only":true,"enforceable":true,"months":"all","limit_set":"26-DP-2776"},{"outfall":"001","parameter":"Flow","parameter_code":"74076","statistic":"monthly average","qualifier":null,"value":null,"unit":"gal/d","report_only":true,"enforceable":true,"months":"all","limit_set":"26-DP-2776"}],"next":[{"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":"MD0072214"},"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=MD0072214"},{"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":"MD0072214"},"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=MD0072214"}]}