{"permit":"MD0020206","name":"U.S ARMY CORPS OF ENGINEERS","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/MD0020206"},"about":[{"label":"What it is","text":"Federal facility · Sewerage Systems (EPA's industry listing)"},{"label":"Where","text":"Chesapeake City, Maryland","href":"https://www.openstreetmap.org/?mlat=39.526667&mlon=-75.812222#map=14/39.526667/-75.812222"},{"label":"Last 12 months","text":"Over a limit 2 times, last in November 2025 (BOD, 5-day, 20 deg. C)"},{"label":"Permit","text":"Expired Jul 31, 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":"2026-02-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/MD0020206#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":"MD","sic":"4952","permits":163,"list":"https://passage-data.com/api/v1/permits?state=MD&sic=4952"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":2,"over_by":[["BOD, 5-day, 20 deg. C",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"BOD, 5-day, 20 deg. C","times":2,"find_limits":{"parameter":"bod","place":"US-MD","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-MD&medium=water_discharge"}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum weekly average","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":["FEB","MAR","APR","MAY"],"limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly average minimum","qualifier":">=","value":"5.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","JUN","JUL","AUG","SEP","OCT","NOV","DEC"],"limit_set":"20-DP-2524"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum monthly average","qualifier":"<=","value":".5","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":".8","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"8.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum monthly average","qualifier":"<=","value":".5","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":"<=","value":".8","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"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":"20-DP-2524"},{"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":"20-DP-2524"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"maximum","qualifier":"<=","value":".1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"maximum monthly geometric mean","qualifier":"<=","value":"126","unit":"MPN/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"20-DP-2524"}],"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":"MD","sic":"4952"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MD&sic=4952","url":"https://passage-data.com/api/v1/permits?state=MD&sic=4952"},{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"bod","place":"US-MD","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-MD&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-MD&medium=water_discharge","page":"https://passage-data.com/limits/US-MD/bod"},{"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":"MD0020206"},"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=MD0020206"},{"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":"MD0020206"},"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=MD0020206"}]}