SILTRONIC CORPORATION

NPDES permit OR0030589 · Major NON-POTW · effective, expires 2028-10-31 · 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 55 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (39)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 340 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 680 lb/d all year
001Phosphorous, total recoverableMO AVG <= 10 mg/L all year
001Phosphorous, total recoverableDAILY MX <= 15 mg/L all year
001Fluoride, total [as F]MO AVG <= 17.4 mg/L all year
001Fluoride, total [as F]DAILY MX <= 32 mg/L all year
001Fluoride, total [as F]MO AVG <= 392 lb/d all year
001Fluoride, total [as F]DAILY MX <= 721 lb/d all year
001Chromium, total [as Cr]MO AVG <= .02 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .05 mg/L all year
001Chromium, total [as Cr]MO AVG <= .45 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 1.13 lb/d 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
001Sodium BisulfiteMO AVG report only all year
001Sodium BisulfiteMO MIN report only all year
001Total toxic organics [TTO] [40 CFR469]QB <= 1.37 mg/L all year
002Phosphorous, total recoverableMO AVG <= 10 mg/L all year
002Phosphorous, total recoverableDAILY MX <= 15 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
002Sodium BisulfiteMO AVG report only all year
002Sodium BisulfiteMO MIN report only all year
003Temperature, water deg. centigradeMO AVG report only all year
003Temperature, water deg. centigradeDAILY MX report only all year
003Temperature, water deg. centigradeMX 7D AV report only all year
003pHDAILY MN >= 6 SU (alert) all year
003pHDAILY MX <= 9 SU (alert) all year
003Solids, total suspendedMO AVG <= 23 mg/L all year
003Solids, total suspendedDAILY MX <= 61 mg/L all year
003Solids, total suspendedMO AVG <= 520 lb/d all year
003Solids, total suspendedDAILY MX <= 1400 lb/d all year
003Chlorine, total residualMO AVG <= .05 mg/L all year
003Chlorine, total residualDAILY MX <= .14 mg/L all year
003Excess thermal loadMX 7D AV <= 22 mkcal/day Jun, Jul, Aug, Sep
003pH range excursions, > 60 minutesTOTAL <= 0 occur/mo all year
003pH range excursions, monthly total accumTOTAL <= 446 min 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