PORT OF ST. HELENS

NPDES permit OR0034231 · Major NON-POTW · administratively continued, expires 2007-12-31 · 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.

This permit expired on 2007-12-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 66 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 (32)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade2P <= 32 deg C Jun, Jul, Aug, Sep, Oct
001Temperature, water deg. centigradeMX 7D AV <= 27 deg C Jun, Jul, Aug, Sep, Oct
001Temperature, water deg. centigradeM1 <= 26 deg C Jun, Jul, Aug, Sep, Oct
001Flow rateMO AVG report only all year
001Chlorine, total residualMO AVG report only all year
001Excess thermal loadDAILY MX report only Jun, Jul, Aug, Sep, Oct
001Excess thermal loadMX 7D AV <= 4.46 MW Jun, Jul, Aug, Sep, Oct
001Excess thermal loadM1 <= 3.58 MW Jun, Jul, Aug, Sep, Oct
001pH, maximumDAILY MX <= 8.5 SU all year
001pH, minimumDAILY MN >= 6.5 SU all year
101Solids, total suspendedMO AVG <= 30 mg/L all year
101Solids, total suspendedDAILY MX <= 100 mg/L all year
101Oil & GreaseMO AVG <= 15 mg/L all year
101Oil & GreaseDAILY MX <= 20 mg/L all year
102Chromium, total [as Cr]MO AVG report only all year
102Chromium, total [as Cr]DAILY MX report only all year
102Zinc, total [as Zn]MO AVG report only all year
102Zinc, total [as Zn]DAILY MX report only all year
102Chlorine, free availableMO AVG <= .15 mg/L all year
102Chlorine, free availableDAILY MX <= .38 mg/L all year
103Solids, total suspendedMO AVG <= 30 mg/L all year
103Solids, total suspendedDAILY MX <= 100 mg/L all year
103Oil & GreaseMO AVG <= 15 mg/L all year
103Oil & GreaseDAILY MX <= 20 mg/L all year
104Chromium, total [as Cr]MO AVG report only all year
104Chromium, total [as Cr]DAILY MX report only all year
104Zinc, total [as Zn]MO AVG report only all year
104Zinc, total [as Zn]DAILY MX report only all year
104Chlorine, free availableMO AVG <= .15 mg/L all year
104Chlorine, free availableDAILY MX <= .38 mg/L all year
1BIChlorine, total residualMO AVG <= .15 mg/L all year
1BIChlorine, total residualDAILY MX <= .38 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