{"permit":"CO0046566","name":"Colorado Mountain Resort Investors LLC","state":"CO","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/CO0046566"},"about":[{"label":"What it is","text":"Sewerage Systems (EPA's industry listing)"},{"label":"Where","text":"Grand County, Colorado","href":"https://www.openstreetmap.org/?mlat=39.960833&mlon=-105.784444#map=14/39.960833/-105.784444"},{"label":"Last 12 months","text":"Over a limit 2 times, last in January 2026 (Solids, suspended percent removal; Nitrogen, ammonia total [as N])"},{"label":"Permit","text":"Expired Nov 30, 2019; 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":"2019-06-03","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/CO0046566#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":"CO","sic":"4952","permits":226,"list":"https://passage-data.com/api/v1/permits?state=CO&sic=4952"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":2,"over_by":[["Solids, suspended percent removal",1],["Nitrogen, ammonia total [as N]",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Nitrogen, ammonia total [as N]","times":1,"find_limits":{"parameter":"ammonia","place":"US-CO","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-CO&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum 7-day average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Discharge to Ranch Creek"},{"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":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum 7-day average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JUN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["AUG"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["SEP"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JUL"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["MAR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JAN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["FEB"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["OCT"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["NOV"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["MAY"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["DEC"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["APR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JUN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["AUG"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["SEP"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JUL"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["MAR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JAN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["FEB"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["OCT"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["NOV"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["MAY"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["DEC"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["APR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"16","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":["FEB"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"18","unit":"mg/L","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"13","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAR"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"25","unit":"mg/L","report_only":false,"enforceable":true,"months":["NOV"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"24","unit":"mg/L","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"22","unit":"mg/L","report_only":false,"enforceable":true,"months":["OCT"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"17","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"18","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"25","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"rolling average","qualifier":"<=","value":"23","unit":"mg/L","report_only":false,"enforceable":true,"months":["SEP"],"limit_set":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Oil and grease","parameter_code":"03582","statistic":"instantaneous maximum","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"30-day average","qualifier":"<=","value":".034","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"Discharge to Ranch Creek"},{"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":"Discharge to Ranch Creek"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"30-day average","qualifier":"<=","value":".4","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"instantaneous maximum","qualifier":"<=","value":".41","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"rolling average","qualifier":"<=","value":".062","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"30-day geometric mean","qualifier":"<=","value":"2000","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"maximum 7-day geometric mean","qualifier":"<=","value":"4000","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"rolling average","qualifier":"<=","value":"689","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, total dissolved","parameter_code":"70295","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, total dissolved","parameter_code":"70295","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, total dissolved","parameter_code":"70295","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, total dissolved","parameter_code":"70295","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"BOD, 5-day, percent removal","parameter_code":"81010","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Solids, suspended percent removal","parameter_code":"81011","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"001","parameter":"Oil and grease visual","parameter_code":"84066","statistic":"instantaneous maximum","qualifier":null,"value":null,"unit":"abst=0;prst=1","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Monitoring for 001A"},{"outfall":"300","parameter":"Plant capacity fact. percent of capacity","parameter_code":"00180","statistic":"30-day average","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"Influent Measurements"},{"outfall":"300","parameter":"Plant capacity fact. percent of capacity","parameter_code":"00180","statistic":"30-day average","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum 7-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum 7-day average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum 7-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Quarterly Influent Measurements"},{"outfall":"300","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"30-day average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Influent Measurements"},{"outfall":"300","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":"Influent Measurements"}],"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":"CO","sic":"4952"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=CO&sic=4952","url":"https://passage-data.com/api/v1/permits?state=CO&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":"ammonia","place":"US-CO","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-CO&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-CO&medium=surface_water","page":"https://passage-data.com/limits/US-CO/ammonia"},{"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":"CO0046566"},"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=CO0046566"},{"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":"CO0046566"},"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=CO0046566"}]}