Denver Federal Center — NPDES permit CO0034878: limits, due date and EPA's record

Federal facility (Nonclassifiable Establishments), Denver, Colorado. NPDES permit CO0034878 expired Mar 31, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (418)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	30-day average	≤ 30 mg/L	all year	001
Solids, total suspended	7-day average	≤ 45 mg/L	all year	001
Oil & Grease	daily maximum	≤ 10 mg/L	all year	001
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	001
Iron, total recoverable	daily maximum	report only (ug/L)	all year	001
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	001
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	001
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	001
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	001
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	001
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	001
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	001
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	001
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	001
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	001
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	001
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	001
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	001
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	001
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	001
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	001
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	001
Benzene	30-day average	report only (ug/L)	all year	001
Benzene	daily maximum	≤ 5 ug/L	all year	001
Tetrachloroethylene	30-day average	report only (ug/L)	all year	001
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	001
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	001
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	001
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	001
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	001
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	001
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	001
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	001
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	001
Vinyl chloride	30-day average	report only (ug/L)	all year	001
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	001
Trichloroethylene	30-day average	report only (ug/L)	all year	001
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	001
BTEX	30-day average	report only (ug/L)	all year	001
BTEX	daily maximum	≤ 100 ug/L	all year	001
Phosphorus, Total	30-day average	report only (mg/L)	all year	001
Phosphorus, Total	daily maximum	report only (mg/L)	all year	001
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	001
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	001
Flow, total	monthly average	report only (MGD)	all year	001
Flow, total	daily maximum	report only (MGD)	all year	001
Oil and grease visual	instantaneous maximum	report only (N=0;Y=1)	all year	001
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	001
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	001
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	30-day average	≤ 30 mg/L	all year	002
Solids, total suspended	7-day average	≤ 45 mg/L	all year	002
Oil & Grease	daily maximum	≤ 10 mg/L	all year	002
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	002
Iron, total recoverable	daily maximum	report only (ug/L)	all year	002
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	002
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	002
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	002
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	002
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	002
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	002
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	002
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	002
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	002
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	002
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	002
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	002
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	002
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	002
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	002
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	002
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	002
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	002
Benzene	30-day average	report only (ug/L)	all year	002
Benzene	daily maximum	≤ 5 ug/L	all year	002
Tetrachloroethylene	30-day average	report only (ug/L)	all year	002
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	002
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	002
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	002
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	002
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	002
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	002
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	002
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	002
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	002
Vinyl chloride	30-day average	report only (ug/L)	all year	002
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	002
Trichloroethylene	30-day average	report only (ug/L)	all year	002
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	002
BTEX	30-day average	report only (ug/L)	all year	002
BTEX	daily maximum	≤ 100 ug/L	all year	002
Phosphorus, Total	30-day average	report only (mg/L)	all year	002
Phosphorus, Total	daily maximum	report only (mg/L)	all year	002
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	002
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	002
Flow, total	monthly average	report only (MGD)	all year	002
Flow, total	daily maximum	report only (MGD)	all year	002
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	002
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	002
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	002
pH	minimum	≥ 6.5 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Solids, total suspended	30-day average	≤ 30 mg/L	all year	003
Solids, total suspended	7-day average	≤ 45 mg/L	all year	003
Oil & Grease	daily maximum	≤ 10 mg/L	all year	003
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	003
Iron, total recoverable	daily maximum	report only (ug/L)	all year	003
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	003
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	003
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	003
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	003
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	003
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	003
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	003
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	003
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	003
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	003
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	003
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	003
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	003
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	003
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	003
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	003
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	003
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	003
Benzene	30-day average	report only (ug/L)	all year	003
Benzene	daily maximum	≤ 5 ug/L	all year	003
Tetrachloroethylene	30-day average	report only (ug/L)	all year	003
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	003
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	003
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	003
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	003
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	003
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	003
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	003
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	003
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	003
Vinyl chloride	30-day average	report only (ug/L)	all year	003
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	003
Trichloroethylene	30-day average	report only (ug/L)	all year	003
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	003
BTEX	30-day average	report only (ug/L)	all year	003
BTEX	daily maximum	≤ 100 ug/L	all year	003
Phosphorus, Total	30-day average	report only (mg/L)	all year	003
Phosphorus, Total	daily maximum	report only (mg/L)	all year	003
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	003
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	003
Flow, total	monthly average	report only (MGD)	all year	003
Flow, total	daily maximum	report only (MGD)	all year	003
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	003
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	003
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	003
pH	minimum	≥ 6.5 SU	all year	004
pH	maximum	≤ 9 SU	all year	004
Solids, total suspended	30-day average	≤ 30 mg/L	all year	004
Solids, total suspended	7-day average	≤ 45 mg/L	all year	004
Oil & Grease	daily maximum	≤ 10 mg/L	all year	004
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	004
Iron, total recoverable	daily maximum	report only (ug/L)	all year	004
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	004
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	004
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	004
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	004
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	004
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	004
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	004
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	004
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	004
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	004
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	004
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	004
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	004
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	004
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	004
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	004
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	004
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	004
Benzene	30-day average	report only (ug/L)	all year	004
Benzene	daily maximum	≤ 5 ug/L	all year	004
Tetrachloroethylene	30-day average	report only (ug/L)	all year	004
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	004
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	004
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	004
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	004
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	004
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	004
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	004
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	004
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	004
Vinyl chloride	30-day average	report only (ug/L)	all year	004
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	004
Trichloroethylene	30-day average	report only (ug/L)	all year	004
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	004
BTEX	30-day average	report only (ug/L)	all year	004
BTEX	daily maximum	≤ 100 ug/L	all year	004
Phosphorus, Total	30-day average	report only (mg/L)	all year	004
Phosphorus, Total	daily maximum	report only (mg/L)	all year	004
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	004
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	004
Flow, total	monthly average	report only (MGD)	all year	004
Flow, total	daily maximum	report only (MGD)	all year	004
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	004
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	004
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	004
pH	minimum	≥ 6.5 SU	all year	005
pH	maximum	≤ 9 SU	all year	005
Solids, total suspended	30-day average	≤ 30 mg/L	all year	005
Solids, total suspended	7-day average	≤ 45 mg/L	all year	005
Oil & Grease	daily maximum	≤ 10 mg/L	all year	005
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	005
Iron, total recoverable	daily maximum	report only (ug/L)	all year	005
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	005
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	005
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	005
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	005
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	005
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	005
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	005
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	005
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	005
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	005
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	005
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	005
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	005
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	005
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	005
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	005
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	005
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	005
Benzene	30-day average	report only (ug/L)	all year	005
Benzene	daily maximum	≤ 5 ug/L	all year	005
Tetrachloroethylene	30-day average	report only (ug/L)	all year	005
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	005
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	005
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	005
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	005
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	005
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	005
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	005
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	005
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	005
Vinyl chloride	30-day average	report only (ug/L)	all year	005
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	005
Trichloroethylene	30-day average	report only (ug/L)	all year	005
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	005
BTEX	30-day average	report only (ug/L)	all year	005
BTEX	daily maximum	≤ 100 ug/L	all year	005
Phosphorus, Total	30-day average	report only (mg/L)	all year	005
Phosphorus, Total	daily maximum	report only (mg/L)	all year	005
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	005
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	005
Flow, total	monthly average	report only (MGD)	all year	005
Flow, total	daily maximum	report only (MGD)	all year	005
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	005
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	005
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	005
pH	minimum	≥ 6.5 SU	all year	006
pH	maximum	≤ 9 SU	all year	006
Solids, total suspended	30-day average	≤ 30 mg/L	all year	006
Solids, total suspended	7-day average	≤ 45 mg/L	all year	006
Oil & Grease	daily maximum	≤ 10 mg/L	all year	006
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	006
Iron, total recoverable	daily maximum	report only (ug/L)	all year	006
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	006
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	006
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	006
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	006
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	006
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	006
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	006
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	006
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	006
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	006
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	006
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	006
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	006
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	006
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	006
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	006
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	006
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	006
Benzene	30-day average	report only (ug/L)	all year	006
Benzene	daily maximum	≤ 5 ug/L	all year	006
Tetrachloroethylene	30-day average	report only (ug/L)	all year	006
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	006
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	006
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	006
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	006
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	006
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	006
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	006
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	006
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	006
Vinyl chloride	30-day average	report only (ug/L)	all year	006
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	006
Trichloroethylene	30-day average	report only (ug/L)	all year	006
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	006
BTEX	30-day average	report only (ug/L)	all year	006
BTEX	daily maximum	≤ 100 ug/L	all year	006
Phosphorus, Total	30-day average	report only (mg/L)	all year	006
Phosphorus, Total	daily maximum	report only (mg/L)	all year	006
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	006
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	006
Flow, total	monthly average	report only (MGD)	all year	006
Flow, total	daily maximum	report only (MGD)	all year	006
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	006
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	006
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	006
pH	minimum	≥ 6.5 SU	all year	007
pH	maximum	≤ 9 SU	all year	007
Solids, total suspended	30-day average	≤ 30 mg/L	all year	007
Solids, total suspended	7-day average	≤ 45 mg/L	all year	007
Oil & Grease	daily maximum	≤ 10 mg/L	all year	007
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	007
Iron, total recoverable	daily maximum	report only (ug/L)	all year	007
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	007
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	007
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	007
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	007
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	007
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	007
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	007
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	007
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	007
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	007
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	007
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	007
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	007
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	007
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	007
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	007
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	007
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	007
Benzene	30-day average	report only (ug/L)	all year	007
Benzene	daily maximum	≤ 5 ug/L	all year	007
Tetrachloroethylene	30-day average	report only (ug/L)	all year	007
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	007
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	007
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	007
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	007
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	007
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	007
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	007
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	007
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	007
Vinyl chloride	30-day average	report only (ug/L)	all year	007
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	007
Trichloroethylene	30-day average	report only (ug/L)	all year	007
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	007
BTEX	30-day average	report only (ug/L)	all year	007
BTEX	daily maximum	≤ 100 ug/L	all year	007
Phosphorus, Total	30-day average	report only (mg/L)	all year	007
Phosphorus, Total	daily maximum	report only (mg/L)	all year	007
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	007
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	007
Flow, total	monthly average	report only (MGD)	all year	007
Flow, total	daily maximum	report only (MGD)	all year	007
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	007
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	007
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	007
pH	minimum	≥ 6.5 SU	all year	008
pH	maximum	≤ 9 SU	all year	008
Solids, total suspended	30-day average	≤ 30 mg/L	all year	008
Solids, total suspended	7-day average	≤ 45 mg/L	all year	008
Oil & Grease	daily maximum	≤ 10 mg/L	all year	008
Iron, total recoverable	30-day average	≤ 1000 ug/L	all year	008
Iron, total recoverable	daily maximum	report only (ug/L)	all year	008
Chromium, total recoverable	30-day average	≤ 100 ug/L	all year	008
Chromium, total recoverable	daily maximum	report only (ug/L)	all year	008
Zinc, potentially dissolved	30-day average	≤ 207 ug/L	all year	008
Zinc, potentially dissolved	daily maximum	≤ 273 ug/L	all year	008
Silver, potentially dissolved	30-day average	≤ .88 ug/L	all year	008
Silver, potentially dissolved	daily maximum	≤ 5.6 ug/L	all year	008
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	008
Copper, potentially dissolved	daily maximum	≤ 23 ug/L	all year	008
Cadmium, potentially dissolvd	30-day average	≤ 1.1 ug/L	all year	008
Cadmium, potentially dissolvd	daily maximum	≤ 4.7 ug/L	all year	008
Lead, potentially dissolvd	30-day average	≤ 4.7 ug/L	all year	008
Lead, potentially dissolvd	daily maximum	≤ 122 ug/L	all year	008
Manganese, potentially dissolvd	30-day average	≤ 2006 ug/L	all year	008
Manganese, potentially dissolvd	daily maximum	≤ 3631 ug/L	all year	008
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	008
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	008
Selenium, potentially dissolvd	30-day average	≤ 4.6 ug/L	all year	008
Selenium, potentially dissolvd	daily maximum	≤ 18.4 ug/L	all year	008
Benzene	30-day average	report only (ug/L)	all year	008
Benzene	daily maximum	≤ 5 ug/L	all year	008
Tetrachloroethylene	30-day average	report only (ug/L)	all year	008
Tetrachloroethylene	daily maximum	report only (ug/L)	all year	008
1,1-Dichloroethane	30-day average	report only (ug/L)	all year	008
1,1-Dichloroethane	daily maximum	≤ 700 ug/L	all year	008
1,1-Dichloroethylene	30-day average	report only (ug/L)	all year	008
1,1-Dichloroethylene	daily maximum	≤ 7 ug/L	all year	008
1,1,1-Trichloroethane	30-day average	report only (ug/L)	all year	008
1,1,1-Trichloroethane	daily maximum	≤ 200 ug/L	all year	008
1,2,4-Trichlorobenzene	30-day average	report only (ug/L)	all year	008
1,2,4-Trichlorobenzene	daily maximum	report only (ug/L)	all year	008
Vinyl chloride	30-day average	report only (ug/L)	all year	008
Vinyl chloride	daily maximum	≤ 2 ug/L	all year	008
Trichloroethylene	30-day average	report only (ug/L)	all year	008
Trichloroethylene	daily maximum	≤ 5 ug/L	all year	008
BTEX	30-day average	report only (ug/L)	all year	008
BTEX	daily maximum	≤ 100 ug/L	all year	008
Phosphorus, Total	30-day average	report only (mg/L)	all year	008
Phosphorus, Total	daily maximum	report only (mg/L)	all year	008
Mercury, total recoverable	30-day average	≤ .01 ug/L	all year	008
Mercury, total recoverable	daily maximum	report only (ug/L)	all year	008
Flow, total	monthly average	report only (MGD)	all year	008
Flow, total	daily maximum	report only (MGD)	all year	008
Oil and grease visual	instantaneous maximum	≤ 0 N=0;Y=1	all year	008
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	report only (%)	all year	008
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	report only (%)	all year	008
Flow, total	30-day average	≤ .13 MGD	all year	SUM
Flow, total	daily maximum	report only (MGD)	all year	SUM

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/CO0034878 · MCP: https://passage-data.com/mcp