Holcim US Inc

NPDES permit CO0000671 · Minor NON-POTW · administratively continued, expires 2026-02-28 · 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 2026-02-28 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

6values over a limit
1required values missing, on 1 form(s)
0of 156 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, total suspended (2), Nitrogen, ammonia total [as N] (2), E. coli (1).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (256)

OutfallParameterStatisticLimitMonths
002Conductivity30DA AVG report only all year
002ConductivityDAILY MX report only all year
002pHMINIMUM >= 6.5 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
002Nitrogen, ammonia total [as N]30DA AVG <= 85 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 85 mg/L all year
002Nitrogen, nitrite total [as N]DAILY MX report only all year
002Nitrogen, nitrate total [as N]DAILY MX <= 3264 mg/L all year
002Nitrogen, inorganic totalDAILY MX report only all year
002Nitrogen, inorganic totalDAILY MX <= 3264 mg/L all year
002Cyanide, weak acid, dissociableDAILY MX report only all year
002Sodium adsorption ratio30DA AVG report only all year
002Sodium adsorption ratioDAILY MX report only all year
002Arsenic, total recoverable30DA AVG report only all year
002Iron, total recoverable30DA AVG report only all year
002Manganese, dissolved [as Mn]30DA AVG report only all year
002Manganese, dissolved [as Mn]DAILY MX report only all year
002Nickel, total recoverable30DA AVG report only all year
002Aluminum, total recoverable30DA AVG <= 87 ug/L all year
002Aluminum, total recoverable30DA AVG <= 54298 ug/L all year
002Aluminum, total recoverableDAILY MX report only all year
002Aluminum, total recoverableDAILY MX <= 317382 ug/L all year
002Cadmium, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX report only all year
002Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
002Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
002Zinc, potentially dissolved30DA AVG report only all year
002Zinc, potentially dissolvedDAILY MX report only all year
002Zinc, potentially dissolvedROLL AVG report only all year
002Silver, potentially dissolved30DA AVG report only all year
002Silver, potentially dissolvedDAILY MX report only all year
002Copper, potentially dissolved30DA AVG report only all year
002Copper, potentially dissolvedDAILY MX report only all year
002Arsenic, potentially dissolvedDAILY MX report only all year
002Cadmium, potentially dissolvd30DA AVG report only all year
002Cadmium, potentially dissolvdDAILY MX report only all year
002Chromium, trivalent, potentially dissolvd30DA AVG report only all year
002Lead, potentially dissolvd30DA AVG report only all year
002Lead, potentially dissolvdDAILY MX report only all year
002Nickel, potentially dissolvd30DA AVG report only all year
002Nickel, potentially dissolvdDAILY MX report only all year
002Selenium, potentially dissolvd30DA AVG report only all year
002Selenium, potentially dissolvdDAILY MX report only all year
002Uranium, potentially dissolvd30DA AVG report only all year
002Uranium, potentially dissolvdDAILY MX report only all year
002Oil and greaseINST MAX <= 10 mg/L all year
002Chromium, trivalent total recoverableDAILY MX report only all year
002Radium 226 + radium 228, total30DA AVG report only all year
002Uranium, total30DA AVG <= 30 ug/L all year
002Flow, in conduit or thru treatment plant30DA AVG <= .2 MGD all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002E. coli30DA GM <= 2000 #/100mL all year
002E. coliMX 7D GM <= 4000 #/100mL all year
002E. coliROLL AVG <= 36 #/100mL all year
002Mercury, total [as Hg]30DA AVG report only all year
002Boron, total30DA AVG report only all year
002Oil and grease visualINST MAX report only all year
002LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
002LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % all year
003Conductivity30DA AVG report only all year
003ConductivityDAILY MX report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspended30DA AVG <= 30 mg/L all year
003Solids, total suspendedMX 7D AV <= 45 mg/L all year
003Nitrogen, ammonia total [as N]30DA AVG <= 85 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX <= 85 mg/L all year
003Nitrogen, nitrite total [as N]DAILY MX report only all year
003Nitrogen, nitrate total [as N]DAILY MX <= 3264 mg/L all year
003Nitrogen, inorganic totalDAILY MX report only all year
003Nitrogen, inorganic totalDAILY MX <= 3264 mg/L all year
003Cyanide, weak acid, dissociableDAILY MX report only all year
003Sodium adsorption ratio30DA AVG report only all year
003Sodium adsorption ratioDAILY MX report only all year
003Arsenic, total recoverable30DA AVG report only all year
003Iron, total recoverable30DA AVG report only all year
003Manganese, dissolved [as Mn]30DA AVG report only all year
003Manganese, dissolved [as Mn]DAILY MX report only all year
003Nickel, total recoverable30DA AVG report only all year
003Aluminum, total recoverable30DA AVG <= 87 ug/L all year
003Aluminum, total recoverable30DA AVG <= 54298 ug/L all year
003Aluminum, total recoverableDAILY MX report only all year
003Aluminum, total recoverableDAILY MX <= 317382 ug/L all year
003Cadmium, total recoverableDAILY MX report only all year
003Lead, total recoverableDAILY MX report only all year
003Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
003Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
003Zinc, potentially dissolved30DA AVG report only all year
003Zinc, potentially dissolvedDAILY MX report only all year
003Zinc, potentially dissolvedROLL AVG report only all year
003Silver, potentially dissolved30DA AVG report only all year
003Silver, potentially dissolvedDAILY MX report only all year
003Copper, potentially dissolved30DA AVG report only all year
003Copper, potentially dissolvedDAILY MX report only all year
003Arsenic, potentially dissolvedDAILY MX report only all year
003Cadmium, potentially dissolvd30DA AVG report only all year
003Cadmium, potentially dissolvdDAILY MX report only all year
003Chromium, trivalent, potentially dissolvd30DA AVG report only all year
003Chromium, trivalent, potentially dissolvdDAILY MX report only all year
003Lead, potentially dissolvd30DA AVG report only all year
003Lead, potentially dissolvdDAILY MX report only all year
003Nickel, potentially dissolvd30DA AVG report only all year
003Nickel, potentially dissolvdDAILY MX report only all year
003Selenium, potentially dissolvd30DA AVG report only all year
003Selenium, potentially dissolvdDAILY MX report only all year
003Uranium, potentially dissolvd30DA AVG report only all year
003Uranium, potentially dissolvdDAILY MX report only all year
003Oil and greaseINST MAX <= 10 mg/L all year
003Chromium, trivalent total recoverableDAILY MX report only all year
003Radium 226 + radium 228, total30DA AVG report only all year
003Uranium, total30DA AVG <= 30 ug/L all year
003Flow, in conduit or thru treatment plant30DA AVG <= .15 MGD all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003E. coli30DA GM <= 2000 #/100mL all year
003E. coliMX 7D GM <= 4000 #/100mL all year
003E. coliROLL AVG <= 36 #/100mL all year
003Mercury, total [as Hg]30DA AVG report only all year
003Boron, total30DA AVG report only all year
003Oil and grease visualINST MAX report only all year
003LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
003LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % all year
009BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
009BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
009BOD, 5-day, 20 deg. C30DA AVG <= 37.5 lb/d all year
009BOD, 5-day, 20 deg. CMX 7D AV <= 56.3 lb/d all year
009pHMINIMUM >= 6 SU all year
009pHMAXIMUM <= 9 SU all year
009Solids, total suspended30DA AVG <= 30 mg/L all year
009Solids, total suspendedMX 7D AV <= 45 mg/L all year
009Solids, total suspended30DA AVG <= 37.5 lb/d all year
009Solids, total suspendedMX 7D AV <= 56.3 lb/d all year
009Oil and greaseINST MAX <= 10 mg/L all year
009Flow, in conduit or thru treatment plant30DA AVG <= .15 MGD all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Chlorine, total residual30DA AVG <= .5 mg/L all year
009Chlorine, total residualINST MAX <= .5 mg/L all year
009E. coli30DA AVG <= 2000 #/100mL all year
009E. coliMX 7D AV <= 4000 #/100mL all year
009Oil and grease visualINST MAX report only all year
010Zinc, potentially dissolved30DA AVG report only all year
010Zinc, potentially dissolvedDAILY MX report only all year
010Cadmium, potentially dissolvd30DA AVG report only all year
010Cadmium, potentially dissolvdDAILY MX report only all year
011Conductivity30DA AVG report only all year
011ConductivityDAILY MX report only all year
011pHMINIMUM >= 6.5 SU all year
011pHMAXIMUM <= 9 SU all year
011Solids, total suspended30DA AVG <= 30 mg/L all year
011Solids, total suspendedMX 7D AV <= 45 mg/L all year
011Cyanide, weak acid, dissociableDAILY MX report only all year
011Cyanide, weak acid, dissociableDAILY MX report only all year
011Sodium adsorption ratio30DA AVG report only all year
011Sodium adsorption ratioDAILY MX report only all year
011Arsenic, total recoverable30DA AVG report only all year
011Iron, total recoverable30DA AVG report only all year
011Iron, total recoverable30DA AVG report only all year
011Selenium, total recoverable30DA AVG <= 180 ug/L all year
011Selenium, total recoverable30DA AVG <= 20 ug/L all year
011Beryllium, total recoverable [as Be]30DA AVG report only all year
011Manganese, dissolved [as Mn]30DA AVG report only all year
011Manganese, dissolved [as Mn]30DA AVG report only all year
011Manganese, dissolved [as Mn]DAILY MX report only all year
011Manganese, dissolved [as Mn]DAILY MX report only all year
011Nickel, total recoverable30DA AVG <= 300 ug/L all year
011Nickel, total recoverable30DA AVG report only all year
011Zinc, total recoverable30DA AVG report only all year
011Zinc, total recoverableDAILY MX report only all year
011Aluminum, total recoverable30DA AVG <= 100 ug/L all year
011Aluminum, total recoverable30DA AVG report only all year
011Aluminum, total recoverableDAILY MX report only all year
011Aluminum, total recoverableDAILY MX report only all year
011Cadmium, total recoverable30DA AVG report only all year
011Cadmium, total recoverableDAILY MX report only all year
011Cadmium, total recoverableDAILY MX <= 164 ug/L all year
011Lead, total recoverableDAILY MX report only all year
011Lead, total recoverableDAILY MX report only all year
011Copper, total recoverable30DA AVG report only all year
011Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
011Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
011Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
011Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
011Zinc, potentially dissolved30DA AVG report only all year
011Zinc, potentially dissolved30DA AVG report only all year
011Zinc, potentially dissolvedDAILY MX report only all year
011Zinc, potentially dissolvedDAILY MX report only all year
011Silver, potentially dissolved30DA AVG report only all year
011Silver, potentially dissolved30DA AVG report only all year
011Silver, potentially dissolvedDAILY MX report only all year
011Silver, potentially dissolvedDAILY MX report only all year
011Copper, potentially dissolved30DA AVG report only all year
011Copper, potentially dissolved30DA AVG report only all year
011Copper, potentially dissolvedDAILY MX report only all year
011Copper, potentially dissolvedDAILY MX report only all year
011Arsenic, potentially dissolvedDAILY MX report only all year
011Cadmium, potentially dissolvd30DA AVG report only all year
011Cadmium, potentially dissolvd30DA AVG <= 59 ug/L all year
011Cadmium, potentially dissolvdDAILY MX report only all year
011Cadmium, potentially dissolvdDAILY MX <= 185 ug/L all year
011Chromium, trivalent, potentially dissolvd30DA AVG report only all year
011Chromium, trivalent, potentially dissolvd30DA AVG report only all year
011Chromium, trivalent, potentially dissolvdDAILY MX report only all year
011Chromium, trivalent, potentially dissolvdDAILY MX report only all year
011Lead, potentially dissolvd30DA AVG report only all year
011Lead, potentially dissolvd30DA AVG report only all year
011Lead, potentially dissolvdDAILY MX report only all year
011Lead, potentially dissolvdDAILY MX report only all year
011Nickel, potentially dissolvd30DA AVG report only all year
011Nickel, potentially dissolvd30DA AVG report only all year
011Nickel, potentially dissolvdDAILY MX report only all year
011Nickel, potentially dissolvdDAILY MX report only all year
011Selenium, potentially dissolvd30DA AVG report only all year
011Selenium, potentially dissolvd30DA AVG <= 182 ug/L all year
011Selenium, potentially dissolvdDAILY MX report only all year
011Selenium, potentially dissolvdDAILY MX <= 586 ug/L all year
011Uranium, potentially dissolvd30DA AVG report only all year
011Uranium, potentially dissolvd30DA AVG report only all year
011Uranium, potentially dissolvdDAILY MX report only all year
011Uranium, potentially dissolvdDAILY MX report only all year
011Oil and greaseINST MAX <= 10 mg/L all year
011Chromium, trivalent total recoverableDAILY MX report only all year
011Chromium, trivalent total recoverableDAILY MX report only all year
011Radium 226 + radium 228, total30DA AVG report only all year
011Uranium, total30DA AVG report only all year
011Uranium, total30DA AVG <= 30 ug/L all year
011Uranium, total30DA AVG report only all year
011Flow, in conduit or thru treatment plant30DA AVG <= 1.8 MGD all year
011Flow, in conduit or thru treatment plantDAILY MX report only all year
011Mercury, total [low level]30DA AVG report only all year
011Mercury, total [low level]DAILY MX report only all year
011Chromium, hexavalent tot recoverable30DA AVG report only all year
011Boron, total30DA AVG <= .75 mg/L all year
011Boron, total30DA AVG report only all year
011Oil and grease visualINST MAX report only all year
011LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
011LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % all year
012Temperature, water deg. centigradeDAILY MX report only all year
012pHMINIMUM >= 6 SU all year
012pHMAXIMUM <= 9 SU all year
012Temperature Increase Deg. CDAILY MX <= 3 deg C 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
300Flow, in conduit or thru treatment plant30DA AVG report only all year
300Flow, in conduit or thru treatment plantDAILY MX report only all year
300CFlow, in conduit or thru treatment plant30DA AVG report only all year
300CFlow, in conduit or thru treatment plantDAILY MX report only all year
301Temperature, water deg. centigradeDAILY MX report only all year
301CFlow, in conduit or thru treatment plant30DA AVG report only all year
301CFlow, in conduit or thru treatment plantDAILY MX report only all year
302CFlow, in conduit or thru treatment plant30DA AVG report only all year
302CFlow, in conduit or thru treatment plantDAILY MX report only all year

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