US OIL AND REFINING CO.

NPDES permit WA0001783 · Major NON-POTW · effective, expires 2031-06-30 · 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

0values over a limit
255required values missing, on 62 form(s)
0of 204 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 (77)

OutfallParameterStatisticLimitMonths
001ATemperature, water deg. fahrenheitDAILY MX report only (alert) all year
001ABOD, 5-day, 20 deg. CDAILY MX report only (alert) all year
001ABOD, 5-day, 20 deg. CMO AVG report only (alert) all year
001ABOD, 5-day, 20 deg. CMO AVG <= 126 lb/d (alert) all year
001ASolids, total suspendedDAILY MX report only (alert) all year
001ASolids, total suspendedMO AVG report only (alert) all year
001ASolids, total suspendedMO AVG <= 107 lb/d (alert) all year
001AOil and grease, hexane extr methodDAILY MX <= 15 mg/L (alert) all year
001AOil and grease, hexane extr methodMO AVG <= 39 lb/d (alert) all year
001ANitrogen, ammonia total [as N]DAILY MX report only (alert) all year
001ANitrogen, ammonia total [as N]MO AVG report only (alert) all year
001ANitrogen, ammonia total [as N]MO AVG <= 14 lb/d all year
001ASulfide, total [as S]DAILY MX report only (alert) all year
001ASulfide, total [as S]MO AVG report only (alert) all year
001ASulfide, total [as S]MO AVG <= .71 lb/d all year
001AChromium, hexavalent [as Cr]MO AVG <= .06 lb/d all year
001AChromium, total [as Cr]Single Rdg report only (alert) all year
001AChromium, total [as Cr]MO AVG <= .88 lb/d all year
001AChromium, hexavalent dissolved [as Cr]DAILY MX <= 50 ug/L all year
001ATotal phenolsDAILY MX report only (alert) all year
001ATotal phenolsMO AVG report only (alert) all year
001APhenolics, totalMO AVG <= .65 lb/CFS/d all year
001ApH, maximumDAILY MX <= 9 SU (alert) all year
001ApH, minimumDAILY MN >= 6 SU (alert) all year
001AFlowMO AVG report only (alert) all year
001AChemical oxygen demand [COD]DAILY MX report only (alert) all year
001AChemical oxygen demand [COD]MO AVG report only (alert) all year
001AChemical Oxygen Demand [COD]MO AVG <= 633 lb/d (alert) all year
001ADaily excursion time [min]MO TOTAL <= 446 min all year
001BTurbidityDAILY MX <= 25 NTU (alert) all year
001BpHDAILY MN >= 5 SU all year
001BpHDAILY MX <= 9 SU all year
001BOil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
001BCopper, total [as Cu]DAILY MX <= 5.8 ug/L all year
001BDurationMO TOTAL report only (alert) all year
001BFlow, totalMO TOTAL report only (alert) all year
001BFree Oil Visual SheenSingle Rdg report only (alert) all year
002TurbidityDAILY MX <= 25 NTU (alert) all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
002Copper, total [as Cu]DAILY MX <= 5.8 ug/L all year
002DurationMO TOTAL report only (alert) all year
002Flow, totalMO TOTAL report only (alert) all year
002Free Oil Visual SheenSingle Rdg report only (alert) all year
003TurbidityDAILY MX <= 25 NTU (alert) all year
003pHDAILY MN >= 5 SU all year
003pHDAILY MX <= 9 SU all year
003Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
003DurationMO TOTAL report only (alert) all year
003Flow, totalMO TOTAL report only (alert) all year
003Free Oil Visual SheenSingle Rdg report only (alert) all year
005TurbidityDAILY MX <= 25 NTU (alert) all year
005pHDAILY MN >= 5 SU all year
005pHDAILY MX <= 9 SU all year
005Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
005Copper, total [as Cu]Single Rdg report only (alert) all year
005DurationMO TOTAL report only (alert) all year
005Flow, totalMO TOTAL report only (alert) all year
005Free Oil Visual SheenSingle Rdg report only (alert) all year
DFSDurationMO TOTAL report only (alert) all year
DFSFlow, totalMO TOTAL report only (alert) all year
NUTRNitrogen, total [as N]DAILY MX report only (alert) all year
NUTRNitrogen, nitrite total [as N]DAILY MX report only (alert) all year
NUTRNitrogen, nitrate total [as N]DAILY MX report only (alert) all year
NUTRNitrogen, Kjeldahl, dissolved [as N]DAILY MX report only (alert) all year
NUTRNitrogen, Kjeldahl, total [as N]DAILY MX report only (alert) all year
NUTRCarbon, tot organic [TOC]DAILY MX report only (alert) all year
NUTRCarbon, dissolved organic [as C]DAILY MX report only (alert) all year
NUTRBOD, carbonaceous [5 day, 20 C]DAILY MX report only (alert) all year
NUTRParticulate Organic CarbonDAILY MX report only (alert) all year
ORBBOD, 5-day, 20 deg. CMO AVG report only (alert) all year
ORBBOD, 5-day, 20 deg. CMO AVG report only (alert) all year
ORBFlowDAILY MX report only (alert) all year
PRODTotal Production - volumeMO AVG report only (alert) all year
RAINRainfallDAILY MX report only (alert) all year
RAINRainfallMO TOTAL 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