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Colorado Mountain Resort Investors LLC

Sewerage Systems, Grand County, Colorado. NPDES permit CO0046566 expired Nov 30, 2019; its limits still apply. Last 12 months: over a limit 2 times (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (9 values), outfall 001 form Q quarterly (18 values), outfall 300 form I monthly (3 values), outfall 300 form Q quarterly (7 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 2 of 32 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025Solids, suspended percent removal, monthly average minimum84 %≥ 85 %7%
January 2026Nitrogen, ammonia total [as N], rolling average26.2 mg/L≤ 17 mg/L54%

Limits in force (70)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum weekly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 45 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 30 mg/Lall year001
Solids, total suspendedmaximum 7-day average≤ 45 mg/Lall year001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Jun001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Aug001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Sep001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Jul001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Mar001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Jan001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Feb001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Oct001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Nov001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)May001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Dec001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Aug001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Sep001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jul001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Feb001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Dec001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr001
Nitrogen, ammonia total [as N]rolling average≤ 16 mg/LJul001
Nitrogen, ammonia total [as N]rolling average≤ 15 mg/LFeb001
Nitrogen, ammonia total [as N]rolling average≤ 18 mg/LAug001
Nitrogen, ammonia total [as N]rolling average≤ 15 mg/LApr001
Nitrogen, ammonia total [as N]rolling average≤ 13 mg/LMar001
Nitrogen, ammonia total [as N]rolling average≤ 25 mg/LNov001
Nitrogen, ammonia total [as N]rolling average≤ 24 mg/LDec001
Nitrogen, ammonia total [as N]rolling average≤ 22 mg/LOct001
Nitrogen, ammonia total [as N]rolling average≤ 17 mg/LJan001
Nitrogen, ammonia total [as N]rolling average≤ 18 mg/LJun001
Nitrogen, ammonia total [as N]rolling average≤ 25 mg/LMay001
Nitrogen, ammonia total [as N]rolling average≤ 23 mg/LSep001
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year001
Flow, in conduit or thru treatment plant30-day average≤ .034 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residual30-day average≤ .4 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ .41 mg/Lall year001
Chlorine, total residualrolling average≤ .062 mg/Lall year001
E. coli30-day geometric mean≤ 2000 #/100mLall year001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLall year001
E. colirolling average≤ 689 #/100mLall year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)all year001
Plant capacity fact. percent of capacity30-day averagereport only (%)all year300
Plant capacity fact. percent of capacity30-day averagereport only (%)all year300
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year300
BOD, 5-day, 20 deg. Cmaximum 7-day averagereport only (mg/L)all year300
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year300
BOD, 5-day, 20 deg. Cmaximum 7-day averagereport only (lb/d)all year300
Solids, total suspended30-day averagereport only (mg/L)all year300
Solids, total suspendedmaximum 7-day averagereport only (mg/L)all year300
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year300
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year300

How strict are these limits?

Cited limits by parameter: Colorado's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CO0046566 · MCP: https://passage-data.com/mcp