Columbia River Carbonates

NPDES permit WA0039721 · Minor NON-POTW · effective, expires 2030-09-30 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 43 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WA permits in EPA's filings — check your permit).

Limits in force (27)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX <= 17.5 deg C all year
001Temperature, water deg. centigradeMO AVG <= 17.5 deg C all year
001Oxygen, dissolved [DO]MINIMUM >= 8 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 45 mg/L all year
001Turbidity, backgroundDAILY MX report only (alert) all year
001Turbidity, backgroundMO AVG report only (alert) all year
001Turbidity, changeDAILY MX <= 5 NTU all year
001Turbidity, changeMO AVG <= 5 NTU all year
001pH, maximumMAXIMUM <= 9 SU all year
001pH, minimumMINIMUM >= 6 SU all year
001FlowDAILY MX report only (alert) all year
001FlowMO AVG report only (alert) all year
002Temperature, water deg. fahrenheitDAILY MX <= 104 deg F all year
002Temperature, water deg. fahrenheitMO AVG <= 104 deg F all year
002BOD, 5-day, 20 deg. CDAILY MX report only (alert) all year
002BOD, 5-day, 20 deg. CMO AVG report only (alert) all year
002Solids, total suspendedDAILY MX report only (alert) all year
002Solids, total suspendedMO AVG report only (alert) all year
002Oil and grease [soxhlet extr.] tot.DAILY MX <= 75 mg/L all year
002Oil and grease [soxhlet extr.] tot.MO AVG <= 75 mg/L all year
002pH, maximumMAXIMUM <= 9 SU all year
002pH, minimumMINIMUM >= 5.5 SU all year
002FlowDAILY MX <= 10000 gal/d all year
002FlowMO AVG <= 5000 gal/d all year
003TurbidityDAILY MX report only (alert) all year
003TurbidityMO AVG report only (alert) 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