DAWN MINING COMPANY

NPDES permit WA0025721 · Major NON-POTW · administratively continued, expires 2000-10-30 · 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 2000-10-30 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
0required values missing, on 0 form(s)
1of 48 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (95)

OutfallParameterStatisticLimitMonths
001Oxygen demand, chem. [high level] [COD]DAILY AV <= 100 mg/L all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Hardness, total [as CaCO3]DAILY AV report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Manganese, total [as Mn]DAILY AV <= 3 mg/L all year
001Manganese, total [as Mn]DAILY MX <= 10 mg/L all year
001Zinc, total [as Zn]DAILY AV <= .5 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
001Cadmium, total recoverableDAILY AV <= .1 mg/L all year
001Cadmium, total recoverableDAILY MX <= .015 mg/L all year
001Copper, total recoverableDAILY AV <= .126 mg/L all year
001Copper, total recoverableDAILY MX <= .184 mg/L all year
001Radium 226, totalDAILY AV <= 10 pCi/L all year
001Radium 226, totalDAILY MX <= 30 pCi/L all year
001Radium 226, dissolvedDAILY AV <= 3 pCi/L all year
001Radium 226, dissolvedDAILY MX <= 10 pCi/L all year
001Uranium, totalDAILY AV <= 2 mg/L all year
001Uranium, totalDAILY MX <= 4 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
002Oxygen demand, chem. [high level] [COD]DAILY AV <= 100 mg/L all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Hardness, total [as CaCO3]DAILY AV report only Jan, Apr, Jul, Oct
002Manganese, total [as Mn]DAILY AV <= 3 mg/L all year
002Manganese, total [as Mn]DAILY MX <= 10 mg/L all year
002Zinc, total [as Zn]DAILY AV <= .5 mg/L all year
002Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
002Cadmium, total recoverableMO AVG <= .1 mg/L all year
002Cadmium, total recoverableDAILY MX <= .015 mg/L all year
002Copper, total recoverableMO AVG <= .126 mg/L all year
002Copper, total recoverableDAILY MX <= .184 mg/L all year
002Radium 226, totalDAILY AV <= 10 pCi/L all year
002Radium 226, totalDAILY MX <= 30 pCi/L all year
002Radium 226, dissolvedDAILY AV <= 3 pCi/L all year
002Radium 226, dissolvedDAILY MX <= 10 pCi/L all year
002Uranium, totalDAILY AV <= 2 mg/L all year
002Uranium, totalDAILY MX <= 4 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY AV <= 100 mg/L all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY AV <= 20 mg/L all year
003Solids, total suspendedDAILY MX <= 30 mg/L all year
003Hardness, total [as CaCO3]DAILY AV report only all year
003Hardness, total [as CaCO3]DAILY MX report only all year
003Manganese, total [as Mn]DAILY AV <= 3 mg/L all year
003Manganese, total [as Mn]DAILY MX <= 10 mg/L all year
003Zinc, total [as Zn]DAILY AV <= .5 mg/L all year
003Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
003Cadmium, total recoverableDAILY AV <= .01 mg/L all year
003Cadmium, total recoverableDAILY MX <= .015 mg/L all year
003Copper, total recoverableDAILY AV <= .126 mg/L all year
003Copper, total recoverableDAILY MX <= .184 mg/L all year
003Radium 226, totalDAILY AV <= 10 pCi/L all year
003Radium 226, totalDAILY MX <= 30 pCi/L all year
003Radium 226, dissolvedDAILY AV <= 3 pCi/L all year
003Radium 226, dissolvedDAILY MX <= 10 pCi/L all year
003Uranium, totalDAILY AV <= 2 mg/L all year
003Uranium, totalDAILY MX <= 4 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Toxicity [acute], Ceriodaphnia dubiaM6 report only Apr, Jun, Oct
003Toxicity [chronic], Ceriodaphnia dubiaM6 report only Apr, Jun, Oct
003Toxicity [acute], Pimephales promelas [Fathead Minnow]M6 report only Apr, Jun, Oct
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]M6 report only Apr, Jun, Oct
004Oxygen demand, chem. [high level] [COD]DAILY AV <= 100 mg/L all year
004Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedDAILY AV <= 20 mg/L all year
004Solids, total suspendedDAILY MX <= 30 mg/L all year
004Hardness, total [as CaCO3]DAILY AV report only all year
004Manganese, total [as Mn]DAILY AV <= 3 mg/L all year
004Manganese, total [as Mn]DAILY MX <= 10 mg/L all year
004Zinc, total [as Zn]DAILY AV <= .5 mg/L all year
004Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
004Cadmium, total recoverableDAILY AV <= .01 mg/L all year
004Cadmium, total recoverableDAILY MX <= .015 mg/L all year
004Copper, total recoverableDAILY AV <= .126 mg/L all year
004Copper, total recoverableDAILY MX <= .184 mg/L all year
004Radium 226, totalDAILY AV <= 10 pCi/L all year
004Radium 226, totalDAILY MX <= 30 pCi/L all year
004Radium 226, dissolvedDAILY AV <= 3 pCi/L all year
004Radium 226, dissolvedDAILY MX <= 10 pCi/L all year
004Uranium, totalDAILY AV <= 2 mg/L all year
004Uranium, totalDAILY MX <= 4 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only 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