Capitol Operating Group, LLC.

NPDES permit NN0020133 · Minor NON-POTW · effective, expires 2027-06-30 · 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.

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

4values over a limit
0required values missing, on 0 form(s)
6of 32 forms filed late

Last period with anything received: 2026-06-30. Most often over: Selenium, total recoverable (4).

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 (44)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L all year
001BOD, 5-day, 20 deg. CHI WK AV <= 35 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 16.7 lb/d all year
001BOD, 5-day, 20 deg. CHI WK AV <= 23.4 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 25 mg/L all year
001Solids, total suspendedHI WK AV <= 35 mg/L all year
001Solids, total suspendedMO AVG <= 16.7 lb/d all year
001Solids, total suspendedHI WK AV <= 23.4 lb/d all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Selenium, total recoverableMO AVG <= 2 ug/L all year
001Selenium, total recoverableDAILY MX <= 20 ug/L all year
001Oil and greaseDAILY MX <= 10 mg/L all year
001PhenanthreneMO AVG <= 6.3 ug/L all year
001PhenanthreneDAILY MX <= 30 ug/L all year
001Solids, total dissolvedDAILY MX <= 1200 mg/L all year
002Flow rateMO AVG report only all year
002Flow rateDAILY MX report only all year
002BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L all year
002BOD, 5-day, 20 deg. CHI WK AV <= 35 mg/L all year
002BOD, 5-day, 20 deg. CMO AVG <= 8.4 lb/d all year
002BOD, 5-day, 20 deg. CHI WK AV <= 11.7 lb/d all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 25 mg/L all year
002Solids, total suspendedHI WK AV <= 35 mg/L all year
002Solids, total suspendedMO AVG <= 8.4 lb/d all year
002Solids, total suspendedHI WK AV <= 11.7 lb/d all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Selenium, total recoverableMO AVG <= 2 ug/L all year
002Selenium, total recoverableDAILY MX <= 20 ug/L all year
002Oil and greaseDAILY MX <= 10 mg/L all year
002PhenanthreneMO AVG <= 6.3 ug/L all year
002PhenanthreneDAILY MX <= 30 ug/L all year
002Solids, total dissolvedDAILY MX <= 1200 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states