Darigold, Inc.

NPDES permit WA0037478 · Minor NON-POTW · administratively continued, expires 2020-12-30 · 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.

This permit expired on 2020-12-30 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
65required values missing, on 5 form(s)
0of 24 forms filed late

Last period with anything received: 2026-04-30.

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 (38)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX <= 95 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 75 lb/d all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM >= 6 SU all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX <= 95 lb/d all year
001Solids, total suspendedMO AVG <= 75 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 6 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L all year
001Chlorine, total residualDAILY MX report only all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001Coliform, fecal generalMO AVG <= 200 #/100mL all year
001FlowDAILY MX <= .6 MGD all year
001FlowMO AVG <= .48 MGD all year
001BTemperature, water deg. centigradeMO AVG <= 40 deg C all year
001BBOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
001BpHMAXIMUM <= 9 SU all year
001BpHMINIMUM >= 6 SU all year
001BSolids, total suspendedMO AVG <= 45 mg/L all year
001BOil and grease, hexane extr methodMO AVG <= 100 mg/L all year
001BNitrogen, ammonia total [as N]MO AVG <= 10 mg/L all year
001BCyanide, total [as CN]DAILY MX <= 1.4 mg/L all year
001BArsenic, total [as As]DAILY MX <= .23 mg/L all year
001BCadmium, total [as Cd]DAILY MX <= .15 mg/L all year
001BChromium, total [as Cr]DAILY MX <= 2 mg/L all year
001BCopper, total [as Cu]DAILY MX <= .25 mg/L all year
001BLead, total [as Pb]DAILY MX <= .14 mg/L all year
001BNickel, total [as Ni]DAILY MX <= 1.8 mg/L all year
001BSilver, total [as Ag]DAILY MX <= .16 mg/L all year
001BZinc, total [as Zn]DAILY MX <= 1.4 mg/L all year
001BSelenium, total [as Se]DAILY MX <= .2 mg/L all year
001BChlorine, total residualMO AVG <= 1 mg/L all year
001BMercury, total [as Hg]DAILY MX <= .0003 mg/L all year
001BFlowDAILY MX <= .55 MGD all year
001BFlowMO AVG <= .45 MGD 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