Passage Data · Check a report · Use it from your AI
Electric Services, major discharger, Boulder, Colorado. NPDES permit CO0001112 expired Oct 31, 2017; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Conductivity | 30-day average | report only (dS/m) | all year | 001 |
| Conductivity | daily maximum | report only (dS/m) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Bicarbonate ion- [as HCO3] | 30-day average | report only (mg/L) | all year | 001 |
| Bicarbonate ion- [as HCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .1 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Dec | 001 |
| Calcium, total recoverable | 30-day average | report only (mg/L) | all year | 001 |
| Calcium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Magnesium, total recoverable | 30-day average | report only (mg/L) | all year | 001 |
| Magnesium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Sodium, total recoverable | 30-day average | report only (mg/L) | all year | 001 |
| Sodium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Sodium adsorption ratio | 30-day average | report only (Ratio) | all year | 001 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 001 |
| Sodium adsorption ratio | 30-day average | report only (Ratio) | all year | 001 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 001 |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 226 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 14 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 22 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | 30-day average | ≤ .011 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .019 mg/L | all year | 001 |
| E. coli | 30-day average | report only (#/100mL) | all year | 001 |
| Sulfide-hydrogen sulfide [undissociated] | 30-day average | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | 001 |
| Sulfate | 30-day average | report only (mg/L) | all year | 001 |
| Boron, total | 30-day average | report only (mg/L) | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 10 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 002 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 002 |
| Oil and grease | instantaneous maximum | ≤ 20 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 11 SU | all year | 003 |
| pH | maximum | ≤ 11 SU | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 003 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 003 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 003 |
| Oil and grease | instantaneous maximum | ≤ 20 mg/L | all year | 003 |
| Oil and grease | instantaneous maximum | ≤ 20 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 003 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 004 |
| Solids, total suspended | maximum 7-day average | ≤ 50 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 005 |
| pH | minimum | ≥ 6.5 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | 30-day average | ≤ 105 mg/L | all year | 005 |
| Solids, total suspended | maximum 7-day average | ≤ 160 mg/L | all year | 005 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .0015 MGD | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 005 |
| Chlorine, total residual | instantaneous maximum | ≤ .5 mg/L | all year | 005 |
| E. coli | 30-day average | ≤ 2000 #/100mL | all year | 005 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 005 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 006 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 006 |
| pH | minimum | ≥ 6.5 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | 30-day average | ≤ 105 mg/L | all year | 006 |
| Solids, total suspended | maximum 7-day average | ≤ 160 mg/L | all year | 006 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .0015 MGD | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 006 |
| Chlorine, total residual | instantaneous maximum | ≤ .5 mg/L | all year | 006 |
| E. coli | 30-day average | ≤ 2000 #/100mL | all year | 006 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 006 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 7 Electric Services permits in Colorado.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CO0001112 · MCP: https://passage-data.com/mcp