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U.S. General Services Administration

Federal facility (Nonclassifiable Establishments), Denver, Colorado. NPDES permit CO0035033, in force until Dec 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (32 values), form W monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 28 reports late

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrade30-day averagereport only (deg C)all year001A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001A
pHminimum≥ 6.5 SUall year001A
pHmaximum≤ 9 SUall year001A
Solids, total suspended30-day average≤ 30 mg/Lall year001A
Solids, total suspendeddaily maximumreport only (mg/L)all year001A
Oil & Greasedaily maximum≤ 10 mg/Lall year001A
Phosphorus, total [as P]30-day averagereport only (mg/L)all year001A
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001A
Selenium, potentially dissolvd30-day averagereport only (ug/L)all year001A
Selenium, potentially dissolvddaily maximumreport only (ug/L)all year001A
Benzene, ethylbenzene, toluene, xylene combination30-day averagereport only (ug/L)all year001A
Benzene, ethylbenzene, toluene, xylene combinationdaily maximumreport only (ug/L)all year001A
Benzene30-day averagereport only (ug/L)all year001A
Benzenedaily maximumreport only (ug/L)all year001A
1,1-Dichloroethane30-day averagereport only (ug/L)all year001A
1,1-Dichloroethanedaily maximumreport only (ug/L)all year001A
1,1,1-Trichloroethane30-day average≤ 200 ug/Lall year001A
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all year001A
Vinyl chloride30-day average≤ 2 ug/Lall year001A
Vinyl chloridedaily maximumreport only (ug/L)all year001A
1,1-Dichloroethene30-day average≤ 7 ug/Lall year001A
1,1-Dichloroethenedaily maximumreport only (ug/L)all year001A
Flow rate30-day average≤ .043 MGDall year001A
Flow ratedaily maximum≤ .072 MGDall year001A
Trichloroethene30-day average≤ 5 ug/Lall year001A
Trichloroethenedaily maximumreport only (ug/L)all year001A
cis-1,2-Dichloroethene30-day average≤ 70 ug/Lall year001A
cis-1,2-Dichloroethenedaily maximumreport only (ug/L)all year001A
1,4-Dioxane30-day averagereport only (ug/L)all year001A
1,4-Dioxanedaily maximumreport only (ug/L)all year001A
Oil and grease visualinstantaneous maximum≤ 0 N=0;Y=1all year001A
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiainstantaneous maximumreport only (pass=0;fail=1)all year001A
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelasinstantaneous maximumreport only (pass=0;fail=1)all year001A
1,4-Dioxaneaverage valuereport only (ug/L)Apr, May, Jun, Oct, Nov, DecRW01

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
1,4-Dioxane, 30-day average1 ug/Lnew4.35 ug/L (8 values)4.35×

How strict are these limits?

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

Same industry: the 4 Nonclassifiable Establishments permits in Colorado.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CO0035033 · MCP: https://passage-data.com/mcp