Columbia River Nitrogen LLC

NPDES permit OR0001635 · Major 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 51 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 OR permits in EPA's filings — check your permit).

Limits in force (39)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeMX 7D AV report only all year
001Thermal DischargeMO AVG <= 3160 mkcal/day Jun, Jul, Aug, Sep
001pHDAILY MN >= 6 SU (alert) all year
001pHDAILY MX <= 9 SU (alert) all year
001Oil & GreaseDAILY MX <= 3 mg/L all year
001Nitrogen, organic total [as N]DAILY MX report only all year
001Nitrogen, organic total [as N]DAILY MX report only all year
001Nitrogen, organic total [as N]MO AVG <= 1 mg/L all year
001Nitrogen, organic total [as N]DAILY MX <= 4 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .4 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 4 mg/L all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]MO AVG <= 1 mg/L all year
001Nitrogen, nitrate total [as N]DAILY MX <= 4 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .14 mg/L all year
001Chlorine, total residualDAILY MX <= .36 mg/L all year
001pH range excursions, > 60 minutesTOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumTOTAL <= 446 min all year
002Temperature, water deg. centigradeDAILY MX report only all year
002pHDAILY MN >= 6 SU (alert) all year
002pHDAILY MX <= 9 SU (alert) all year
002Oil & GreaseDAILY MX <= 3 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG <= .05 mg/L all year
002Chlorine, total residualDAILY MX <= .05 mg/L all year
002pH range excursions, > 60 minutesTOTAL <= 0 occur/mo all year
002pH range excursions, monthly total accumTOTAL <= 446 min all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004Solids, settleableDAILY MX <= .1 mL/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