Lockheed Martin Space Systems Co — NPDES permit CO0001511: limits, due date and EPA's record

Guided Missiles And Space Vehicles, major discharger, Littleton, Colorado. NPDES permit CO0001511 expired Dec 31, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (138)

Parameter	Statistic	Limit	Months	Outfall
N-Nitrosodimethylamine [NDMA]	30-day average	≤ .014 ug/L	all year	004
N-Nitrosodimethylamine [NDMA]	30-day average	≤ .014 ug/L	all year	004
N-Nitrosodimethylamine [NDMA]	daily maximum	report only (ug/L)	all year	004
N-Nitrosodimethylamine [NDMA]	daily maximum	report only (ug/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
Methyl hydrazine	30-day average	report only (ug/L)	all year	004
Methyl hydrazine	30-day average	report only (ug/L)	all year	004
Methyl hydrazine	daily maximum	report only (ug/L)	all year	004
Methyl hydrazine	daily maximum	report only (ug/L)	all year	004
Hydrazine	30-day average	≤ .24 ug/L	all year	004
Hydrazine	30-day average	≤ .24 ug/L	all year	004
Hydrazine	daily maximum	report only (ug/L)	all year	004
Hydrazine	daily maximum	report only (ug/L)	all year	004
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	100
Conductivity	30-day average	report only (dS/m)	all year	100
Conductivity	daily maximum	report only (dS/m)	all year	100
BOD, 5-day, 20 deg. C	30-day average	≤ 30 mg/L	all year	100
BOD, 5-day, 20 deg. C	maximum 7-day average	≤ 45 mg/L	all year	100
pH	minimum	≥ 6.5 SU	all year	100
pH	maximum	≤ 9 SU	all year	100
Bicarbonate ion- [as HCO3]	30-day average	report only (mg/L)	all year	100
Bicarbonate ion- [as HCO3]	daily maximum	report only (mg/L)	all year	100
Solids, total suspended	30-day average	≤ 30 mg/L	all year	100
Solids, total suspended	maximum 7-day average	≤ 45 mg/L	all year	100
Nitrogen, ammonia total [as N]	30-day average	≤ 1 mg/L	all year	100
Nitrogen, ammonia total [as N]	daily maximum	≤ 1 mg/L	all year	100
Nitrogen, nitrite total [as N]	daily maximum	≤ .99 mg/L	all year	100
Nitrogen, inorganic total	daily maximum	report only (mg/L)	all year	100
Nitrogen, inorganic total	rolling average	≤ 17 mg/L	all year	100
Phosphorus, total [as P]	30-day average	≤ 1 mg/L	all year	100
Phosphorus, total [as P]	30-day average	report only (lb/d)	all year	100
Phosphorus, total [as P]	30-day average	≤ 1005 lb/yr	Dec	100
Cyanide, weak acid, dissociable	daily maximum	report only (ug/L)	all year	100
Cyanide, weak acid, dissociable	daily maximum	≤ 5 ug/L	all year	100
Calcium, total recoverable	30-day average	report only (mg/L)	all year	100
Calcium, total recoverable	daily maximum	report only (mg/L)	all year	100
Magnesium, total recoverable	30-day average	report only (mg/L)	all year	100
Magnesium, total recoverable	daily maximum	report only (mg/L)	all year	100
Sodium, total recoverable	30-day average	report only (mg/L)	all year	100
Sodium, total recoverable	daily maximum	report only (mg/L)	all year	100
Sodium adsorption ratio	30-day average	report only (Ratio)	all year	100
Sodium adsorption ratio	daily maximum	report only (Ratio)	all year	100
Sodium adsorption ratio	30-day average	report only (Ratio)	all year	100
Sodium adsorption ratio	daily maximum	report only (Ratio)	all year	100
Chloride [as Cl]	30-day average	report only (mg/L)	all year	100
Chloride [as Cl]	rolling average	report only (mg/L)	all year	100
Arsenic, total recoverable	30-day average	report only (ug/L)	all year	100
Iron, total recoverable	30-day average	report only (ug/L)	all year	100
Iron, total recoverable	rolling average	report only (ug/L)	all year	100
Nickel, total recoverable	30-day average	≤ 810 ug/L	all year	100
Molybdenum, total recoverable	30-day average	report only (ug/L)	all year	100
Molybdenum, total recoverable	rolling average	report only (ug/L)	all year	100
Chromium, hexavalent dissolved [as Cr]	30-day average	≤ 218 ug/L	all year	100
Chromium, hexavalent dissolved [as Cr]	daily maximum	report only (ug/L)	all year	100
Chromium, hexavalent dissolved [as Cr]	rolling average	report only (ug/L)	all year	100
Zinc, potentially dissolved	30-day average	report only (ug/L)	all year	100
Zinc, potentially dissolved	daily maximum	≤ 2876 ug/L	all year	100
Zinc, potentially dissolved	rolling average	≤ 1547 ug/L	all year	100
Silver, potentially dissolved	30-day average	report only (ug/L)	all year	100
Silver, potentially dissolved	daily maximum	≤ 36 ug/L	all year	100
Silver, potentially dissolved	rolling average	≤ 1 ug/L	all year	100
Silver, potentially dissolved	rolling average	≤ .22 ug/L	all year	100
Copper, potentially dissolved	30-day average	≤ 15 ug/L	all year	100
Copper, potentially dissolved	daily maximum	report only (ug/L)	all year	100
Cadmium, potentially dissolvd	30-day average	≤ 7.9 ug/L	all year	100
Cadmium, potentially dissolvd	daily maximum	report only (ug/L)	all year	100
Cadmium, potentially dissolvd	rolling average	report only (ug/L)	all year	100
Lead, potentially dissolvd	30-day average	≤ 46 ug/L	all year	100
Lead, potentially dissolvd	daily maximum	report only (ug/L)	all year	100
Lead, potentially dissolvd	rolling average	report only (ug/L)	all year	100
Manganese, potentially dissolvd	30-day average	report only (ug/L)	all year	100
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	100
Nickel, potentially dissolvd	daily maximum	≤ 8622 ug/L	all year	100
Nickel, potentially dissolvd	rolling average	≤ 122 ug/L	all year	100
Selenium, potentially dissolvd	30-day average	report only (ug/L)	all year	100
Selenium, potentially dissolvd	daily maximum	report only (ug/L)	all year	100
Selenium, potentially dissolvd	rolling average	report only (ug/L)	all year	100
Oil and grease	instantaneous maximum	≤ 10 mg/L	all year	100
Chromium, trivalent total recoverable	30-day average	report only (ug/L)	all year	100
Chromium, trivalent total recoverable	daily maximum	≤ 991 ug/L	all year	100
Chromium, trivalent total recoverable	rolling average	≤ 149 ug/L	all year	100
Carbon tetrachloride	30-day average	≤ 4 ug/L	all year	100
1,2-Dichloroethane	30-day average	≤ 5 ug/L	all year	100
Benzene	30-day average	≤ 5 ug/L	all year	100
Benzene	rolling average	≤ 6.5 ug/L	all year	100
Tetrachloroethylene	30-day average	≤ 21 ug/L	all year	100
Tetrachloroethylene	rolling average	report only (ug/L)	all year	100
1,1-Dichloroethylene	30-day average	≤ 3.2 ug/L	all year	100
1,1-Dichloroethylene	rolling average	≤ 21 ug/L	all year	100
1,1,1-Trichloroethane	30-day average	≤ 200 ug/L	all year	100
1,1,1-Trichloroethane	rolling average	≤ 595 ug/L	all year	100
1,1,2-Trichloroethane	30-day average	≤ 5 ug/L	all year	100
Vinyl chloride	30-day average	≤ .46 ug/L	all year	100
Trichloroethylene	30-day average	≤ 10 ug/L	all year	100
Trichloroethylene	rolling average	report only (ug/L)	all year	100
Flow, in conduit or thru treatment plant	30-day average	≤ .55 MGD	all year	100
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	100
Chlorine, total residual	30-day average	≤ .15 mg/L	all year	100
Chlorine, total residual	instantaneous maximum	≤ .38 mg/L	all year	100
Mercury, total [low level]	30-day average	≤ .2 ug/L	all year	100
E. coli	30-day geometric mean	report only (#/100mL)	all year	100
E. coli	maximum 7-day geometric mean	report only (#/100mL)	all year	100
Sulfide-hydrogen sulfide [undissociated]	30-day average	report only (mg/L)	all year	100
Sulfide-hydrogen sulfide [undissociated]	rolling average	report only (mg/L)	all year	100
Sodium Absorption Ratio	30-day average	report only (fail=0;pass=1)	all year	100
Sodium Absorption Ratio	daily maximum	report only (fail=0;pass=1)	all year	100
Sulfate	30-day average	report only (mg/L)	all year	100
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia	minimum value	≥ 100 %	all year	100
LC50 Static Renewal 96Hr Acute Pimephales promelas	minimum value	≥ 100 %	all year	100
pH	minimum	≥ 6 SU	all year	106
pH	maximum	≤ 9 SU	all year	106
Cyanide, total [as CN]	30-day average	≤ 650 ug/L	all year	106
Cyanide, total [as CN]	daily maximum	≤ 1200 ug/L	all year	106
Cadmium, total [as Cd]	30-day average	≤ 260 ug/L	all year	106
Cadmium, total [as Cd]	daily maximum	≤ 690 ug/L	all year	106
Chromium, total [as Cr]	30-day average	≤ 1710 ug/L	all year	106
Chromium, total [as Cr]	daily maximum	≤ 2770 ug/L	all year	106
Copper, total [as Cu]	30-day average	≤ 2070 ug/L	all year	106
Copper, total [as Cu]	daily maximum	≤ 3380 ug/L	all year	106
Lead, total [as Pb]	30-day average	≤ 430 ug/L	all year	106
Lead, total [as Pb]	daily maximum	≤ 690 ug/L	all year	106
Nickel, total [as Ni]	30-day average	≤ 2380 ug/L	all year	106
Nickel, total [as Ni]	daily maximum	≤ 3980 ug/L	all year	106
Silver, total [as Ag]	30-day average	≤ 240 ug/L	all year	106
Silver, total [as Ag]	daily maximum	≤ 430 ug/L	all year	106
Zinc, total [as Zn]	30-day average	≤ 1480 ug/L	all year	106
Zinc, total [as Zn]	daily maximum	≤ 2610 ug/L	all year	106
Oil and grease	30-day average	≤ 26 mg/L	all year	106
Oil and grease	instantaneous maximum	≤ 52 mg/L	all year	106
Flow, in conduit or thru treatment plant	30-day average	report only (MGD)	all year	106
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	106
Suspended Solids, Total	30-day average	≤ 31 mg/L	all year	106
Suspended Solids, Total	maximum 7-day average	≤ 60 mg/L	all year	106
Total toxic organics [TTO] [40 CFR433]	daily maximum	≤ 2130 ug/L	all year	106
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	UST1

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/CO0001511 · MCP: https://passage-data.com/mcp