Colorado Dept of Transportation

NPDES permit CO0026069 · Minor NON-POTW · administratively continued, expires 2016-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2016-09-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
2of 36 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (260)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX WK AV report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Temperature, water deg. centigradeMX WK AV report only May, Jul
001Temperature, water deg. centigradeMX WK AV report only Aug, Sep
001Temperature, water deg. centigradeMX WK AV report only Jun
001Temperature, water deg. centigradeDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Temperature, water deg. centigradeDAILY MX report only May, Jul
001Temperature, water deg. centigradeDAILY MX report only Aug, Sep
001Temperature, water deg. centigradeDAILY MX report only Jun
001pHMINIMUM >= 6.5 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
001pHMINIMUM >= 6.5 SU May, Jul
001pHMINIMUM >= 6.5 SU Aug, Sep
001pHMINIMUM >= 6.5 SU Jun
001pHMAXIMUM <= 9 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
001pHMAXIMUM <= 9 SU May, Jul
001pHMAXIMUM <= 9 SU Aug, Sep
001pHMAXIMUM <= 9 SU Jun
001Nitrogen, total [as N]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, total [as N]30DA AVG report only May, Jul
001Nitrogen, total [as N]30DA AVG report only Aug, Sep
001Nitrogen, total [as N]30DA AVG report only Jun
001Nitrogen, total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, total [as N]DAILY MX report only May, Jul
001Nitrogen, total [as N]DAILY MX report only Aug, Sep
001Nitrogen, total [as N]DAILY MX report only Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 16.9 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 17 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 17.1 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 9.1 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 11.9 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 18.5 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 25 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 46.9 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 33 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 17 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 33 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 18.5 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 61 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 62 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 72 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 17.5 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 58 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 67 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 85 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 145 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 81 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 70 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 81 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 62 mg/L Dec
001Nitrogen, inorganic totalDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, inorganic totalDAILY MX report only May, Jul
001Nitrogen, inorganic totalDAILY MX report only Aug, Sep
001Nitrogen, inorganic totalDAILY MX report only Jun
001Phosphorus, total [as P]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Phosphorus, total [as P]30DA AVG report only May, Jul
001Phosphorus, total [as P]30DA AVG report only Aug, Sep
001Phosphorus, total [as P]30DA AVG report only Jun
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only May, Jul
001Phosphorus, total [as P]DAILY MX report only Aug, Sep
001Phosphorus, total [as P]DAILY MX report only Jun
001Cyanide, weak acid, dissociableDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Cyanide, weak acid, dissociableDAILY MX report only May, Jul
001Cyanide, weak acid, dissociableDAILY MX report only Aug, Sep
001Cyanide, weak acid, dissociableDAILY MX report only Jun
001Chloride [as Cl]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chloride [as Cl]30DA AVG report only May, Jul
001Chloride [as Cl]30DA AVG report only Aug, Sep
001Chloride [as Cl]30DA AVG report only Jun
001Arsenic, total recoverable30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Arsenic, total recoverable30DA AVG report only May, Jul
001Arsenic, total recoverable30DA AVG report only Aug, Sep
001Arsenic, total recoverable30DA AVG report only Jun
001Iron, total recoverable30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Iron, total recoverable30DA AVG report only May, Jul
001Iron, total recoverable30DA AVG report only Aug, Sep
001Iron, total recoverable30DA AVG report only Jun
001Iron, dissolved [as Fe]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Iron, dissolved [as Fe]30DA AVG <= 74 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Iron, dissolved [as Fe]30DA AVG report only May, Jul
001Iron, dissolved [as Fe]30DA AVG <= 74 ug/L May, Jul
001Iron, dissolved [as Fe]30DA AVG report only Aug, Sep
001Iron, dissolved [as Fe]30DA AVG <= 74 ug/L Aug, Sep
001Iron, dissolved [as Fe]30DA AVG report only Jun
001Iron, dissolved [as Fe]30DA AVG <= 74 ug/L Jun
001Manganese, dissolved [as Mn]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Manganese, dissolved [as Mn]30DA AVG report only May, Jul
001Manganese, dissolved [as Mn]30DA AVG report only Aug, Sep
001Manganese, dissolved [as Mn]30DA AVG report only Jun
001Manganese, dissolved [as Mn]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Manganese, dissolved [as Mn]DAILY MX report only May, Jul
001Manganese, dissolved [as Mn]DAILY MX report only Aug, Sep
001Manganese, dissolved [as Mn]DAILY MX report only Jun
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only May, Jul
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only Aug, Sep
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only Jun
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only May, Jul
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only Aug, Sep
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only Jun
001Zinc, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Zinc, potentially dissolved30DA AVG report only May, Jul
001Zinc, potentially dissolved30DA AVG <= 22 ug/L May, Jul
001Zinc, potentially dissolved30DA AVG report only Aug, Sep
001Zinc, potentially dissolved30DA AVG <= 22 ug/L Aug, Sep
001Zinc, potentially dissolved30DA AVG report only Jun
001Zinc, potentially dissolved30DA AVG <= 22 ug/L Jun
001Zinc, potentially dissolved30DA AVG <= 22 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Silver, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Silver, potentially dissolved30DA AVG <= .038 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Silver, potentially dissolved30DA AVG report only May, Jul
001Silver, potentially dissolved30DA AVG <= .035 ug/L May, Jul
001Silver, potentially dissolved30DA AVG report only Aug, Sep
001Silver, potentially dissolved30DA AVG <= .037 ug/L Aug, Sep
001Silver, potentially dissolved30DA AVG report only Jun
001Silver, potentially dissolved30DA AVG <= .035 ug/L Jun
001Silver, potentially dissolvedDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Silver, potentially dissolvedDAILY MX <= .94 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Silver, potentially dissolvedDAILY MX report only May, Jul
001Silver, potentially dissolvedDAILY MX <= .71 ug/L May, Jul
001Silver, potentially dissolvedDAILY MX report only Aug, Sep
001Silver, potentially dissolvedDAILY MX <= .77 ug/L Aug, Sep
001Silver, potentially dissolvedDAILY MX report only Jun
001Silver, potentially dissolvedDAILY MX <= .71 ug/L Jun
001Copper, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Copper, potentially dissolved30DA AVG report only May, Jul
001Copper, potentially dissolved30DA AVG report only Aug, Sep
001Copper, potentially dissolved30DA AVG report only Jun
001Copper, potentially dissolvedDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Copper, potentially dissolvedDAILY MX report only May, Jul
001Copper, potentially dissolvedDAILY MX report only Aug, Sep
001Copper, potentially dissolvedDAILY MX report only Jun
001Arsenic, potentially dissolvedDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Arsenic, potentially dissolvedDAILY MX report only May, Jul
001Arsenic, potentially dissolvedDAILY MX report only Aug, Sep
001Arsenic, potentially dissolvedDAILY MX report only Jun
001Cadmium, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Cadmium, potentially dissolvd30DA AVG <= .41 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Cadmium, potentially dissolvd30DA AVG report only May, Jul
001Cadmium, potentially dissolvd30DA AVG <= .38 ug/L May, Jul
001Cadmium, potentially dissolvd30DA AVG report only Aug, Sep
001Cadmium, potentially dissolvd30DA AVG <= .4 ug/L Aug, Sep
001Cadmium, potentially dissolvd30DA AVG report only Jun
001Cadmium, potentially dissolvd30DA AVG <= .38 ug/L Jun
001Cadmium, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Cadmium, potentially dissolvdDAILY MX <= 1.4 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Cadmium, potentially dissolvdDAILY MX report only May, Jul
001Cadmium, potentially dissolvdDAILY MX <= 1 ug/L May, Jul
001Cadmium, potentially dissolvdDAILY MX report only Aug, Sep
001Cadmium, potentially dissolvdDAILY MX <= 1.1 ug/L Aug, Sep
001Cadmium, potentially dissolvdDAILY MX report only Jun
001Cadmium, potentially dissolvdDAILY MX <= 1 ug/L Jun
001Chromium, trivalent, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chromium, trivalent, potentially dissolvd30DA AVG report only May, Jul
001Chromium, trivalent, potentially dissolvd30DA AVG report only Aug, Sep
001Chromium, trivalent, potentially dissolvd30DA AVG report only Jun
001Lead, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Lead, potentially dissolvd30DA AVG <= 1.7 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Lead, potentially dissolvd30DA AVG report only May, Jul
001Lead, potentially dissolvd30DA AVG <= 1.5 ug/L May, Jul
001Lead, potentially dissolvd30DA AVG report only Aug, Sep
001Lead, potentially dissolvd30DA AVG <= 1.6 ug/L Aug, Sep
001Lead, potentially dissolvd30DA AVG report only Jun
001Lead, potentially dissolvd30DA AVG <= 1.5 ug/L Jun
001Nickel, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nickel, potentially dissolvd30DA AVG report only May, Jul
001Nickel, potentially dissolvd30DA AVG report only Aug, Sep
001Nickel, potentially dissolvd30DA AVG report only Jun
001Nickel, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nickel, potentially dissolvdDAILY MX report only May, Jul
001Nickel, potentially dissolvdDAILY MX report only Aug, Sep
001Nickel, potentially dissolvdDAILY MX report only Jun
001Selenium, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Selenium, potentially dissolvd30DA AVG <= 6.6 ug/L May, Jul
001Selenium, potentially dissolvd30DA AVG <= 7 ug/L Aug, Sep
001Selenium, potentially dissolvd30DA AVG report only Jun
001Selenium, potentially dissolvd30DA AVG <= 7 ug/L Jun
001Selenium, potentially dissolvd30DA AVG report only May, Jul
001Selenium, potentially dissolvd30DA AVG report only Aug, Sep
001Selenium, potentially dissolvd30DA AVG <= 7.3 ug/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Selenium, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Selenium, potentially dissolvdDAILY MX report only May, Jul
001Selenium, potentially dissolvdDAILY MX report only Aug, Sep
001Selenium, potentially dissolvdDAILY MX report only Jun
001Selenium, potentially dissolvdDAILY MX report only Jun
001Selenium, potentially dissolvdDAILY MX report only May, Jul
001Selenium, potentially dissolvdDAILY MX report only Aug, Sep
001Selenium, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Oil and greaseINST MAX <= 10 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Oil and greaseDAILY MX <= 10 mg/L May, Jul
001Oil and greaseINST MAX <= 10 mg/L Aug, Sep
001Oil and greaseINST MAX <= 10 mg/L Jun
001Uranium, total30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Uranium, total30DA AVG report only May, Jul
001Uranium, total30DA AVG report only Aug, Sep
001Uranium, total30DA AVG report only Jun
001Flow, in conduit or thru treatment plant30DA AVG <= .37 MGD Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plant30DA AVG <= 1.89 MGD May, Jul
001Flow, in conduit or thru treatment plant30DA AVG <= .97 MGD Aug, Sep
001Flow, in conduit or thru treatment plant30DA AVG <= 2.18 MGD Jun
001Flow, in conduit or thru treatment plantDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantDAILY MX report only May, Jul
001Flow, in conduit or thru treatment plantDAILY MX report only Aug, Sep
001Flow, in conduit or thru treatment plantDAILY MX report only Jun
001Chlorine, total residual30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chlorine, total residual30DA AVG report only May, Jul
001Chlorine, total residual30DA AVG report only Aug, Sep
001Chlorine, total residual30DA AVG report only Jun
001Chlorine, total residualINST MAX <= .034 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chlorine, total residualINST MAX <= .034 mg/L May, Jul
001Chlorine, total residualINST MAX <= .034 mg/L Aug, Sep
001Chlorine, total residualINST MAX <= .034 mg/L Jun
001E. coli30DA AVG <= 626 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coli30DA AVG <= 1774 #/100mL May, Jul
001E. coli30DA AVG <= 1149 #/100mL Aug, Sep
001E. coli30DA AVG <= 2000 #/100mL Jun
001E. coliMX 7D AV <= 1252 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliMX 7D AV <= 3548 #/100mL May, Jul
001E. coliMX 7D AV <= 2298 #/100mL Aug, Sep
001E. coliMX 7D AV <= 4000 #/100mL Jun
001Molybdenum, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Molybdenum, potentially dissolved30DA AVG report only May, Jul
001Molybdenum, potentially dissolved30DA AVG report only Aug, Sep
001Molybdenum, potentially dissolved30DA AVG report only Jun
001Mercury, total [as Hg]30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Mercury, total [as Hg]30DA AVG report only May, Jul
001Mercury, total [as Hg]30DA AVG report only Aug, Sep
001Mercury, total [as Hg]30DA AVG report only Jun
001Oil and grease visualINST MAX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Oil and grease visualINST MAX report only May, Jul
001Oil and grease visualINST MAX report only Aug, Sep
001Oil and grease visualINST MAX report only Jun
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 63 tox chronic Mar, Sep
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 69 tox chronic Jun, Dec
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 69 tox chronic Jun, Dec
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 63 tox chronic Mar, Sep
002BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
002BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspended30DA AVG <= 30 mg/L all year
002Solids, total suspendedMX 7D AV <= 45 mg/L all year
002Flow, in conduit or thru treatment plant30DA AVG <= .072 MGD all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002BOD, 5-day, percent removalMINIMUM >= 85 % all year
002Solids, suspended percent removalMINIMUM >= 85 % all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300Solids, total suspended30DA AVG report only all year
300Solids, total suspendedMX 7D AV report only all year
300Flow, in conduit or thru treatment plant30DA AVG report only all year
300Flow, in conduit or thru treatment plantDAILY MX report only all year

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