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Federal Highway Administration - Central Federal Lands

Federal facility (Nonclassifiable Establishments), Denver, Colorado. NPDES permit CO0034860, 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: outfall 001 form A quarterly (30 values), outfall 001 form W quarterly (2 values), outfall RW01 form M quarterly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 8 reports late

Limits in force (33)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrade30-day averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspended30-day averagereport only (mg/L)all year001
Solids, total suspendeddaily maximum≤ 30 mg/Lall year001
Oil & Greasedaily maximum≤ 10 mg/Lall year001
Phosphorus, total [as P]30-day averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Selenium, potentially dissolvd30-day averagereport only (ug/L)all year001
Selenium, potentially dissolvddaily maximumreport only (ug/L)all year001
Benzene, ethylbenzene, toluene, xylene combination30-day averagereport only (ug/L)all year001
Benzene, ethylbenzene, toluene, xylene combinationdaily maximumreport only (ug/L)all year001
Benzene30-day averagereport only (ug/L)all year001
Benzenedaily maximumreport only (ug/L)all year001
1,1-Dichloroethane30-day averagereport only (ug/L)all year001
1,1-Dichloroethanedaily maximum≤ 700 ug/Lall year001
1,1,1-Trichloroethane30-day average≤ 200 ug/Lall year001
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all year001
Vinyl chloride30-day average≤ 1 ug/Lall year001
Vinyl chloridedaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plant30-day average≤ .029 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ .043 MGDall year001
1,1-Dichloroethene30-day average≤ 7 ug/Lall year001
1,1-Dichloroethenedaily maximumreport only (ug/L)all year001
Trichloroethene30-day average≤ 5 ug/Lall year001
Trichloroethenedaily maximumreport only (ug/L)all year001
1,4-Dioxane30-day averagereport only (ug/L)all year001
1,4-Dioxanedaily maximumreport only (ug/L)all year001
Oil and grease visualinstantaneous maximumreport only (N=0;Y=1)all year001
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year001
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelasdaily maximum≤ 0 pass=0;fail=1all year001
1,4-Dioxaneaverage valuereport only (ug/L)Jan, Feb, Mar, Jul, Aug, SepRW01

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
1,4-Dioxane, 30-day average1 ug/Lnew1.2 ug/L (9 values)1.2×

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/CO0034860 · MCP: https://passage-data.com/mcp