U.S. SILVER CORP - IDAHO INC

NPDES permit ID0000027 · Major NON-POTW · administratively continued, expires 2024-07-31 · 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 2024-07-31 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

2values over a limit
0required values missing, on 0 form(s)
54of 114 forms filed late

Last period with anything received: 2026-07-31. Most often over: Lead, total recoverable (1), Copper, total recoverable (1).

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (183)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeHA report only all year
001Temperature, water deg. centigradeMX DA AV report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Solids, total suspendedANNL AVG <= 202 lb/d all year
001Cadmium, total recoverableDAILY MX <= 1.6 ug/L all year
001Cadmium, total recoverableDAILY MX <= .027 lb/d all year
001Lead, total recoverableMO AVG <= 24.1 ug/L all year
001Lead, total recoverableDAILY MX <= 58 ug/L all year
001Lead, total recoverableMO AVG <= .39 lb/d all year
001Lead, total recoverableDAILY MX <= .81 lb/d all year
001Copper, total recoverableMO AVG <= 1 ug/L all year
001Copper, total recoverableDAILY MX <= 1 ug/L all year
001Copper, total recoverableMO AVG <= .025 lb/d all year
001Copper, total recoverableDAILY MX <= .025 lb/d all year
001Mercury, total recoverableMO AVG <= .01 ug/L all year
001Mercury, total recoverableDAILY MX <= .02 ug/L all year
001Mercury, total recoverableMO AVG <= .0003 lb/d all year
001Mercury, total recoverableDAILY MX <= .0005 lb/d all year
001Mercury, total recoverableMO AVG <= .01 ug/L all year
001Mercury, total recoverableDAILY MX <= .02 ug/L all year
001Mercury, total recoverableMO AVG <= .0003 lb/d all year
001Mercury, total recoverableDAILY MX <= .0005 lb/d all year
001Mercury, total recoverableMO AVG <= .011 ug/L all year
001Mercury, total recoverableDAILY MX <= .022 ug/L all year
001Mercury, total recoverableMO AVG <= .0003 lb/d all year
001Mercury, total recoverableDAILY MX <= .0005 lb/d all year
001Mercury, total recoverableMO AVG <= .013 ug/L all year
001Mercury, total recoverableDAILY MX <= .026 ug/L all year
001Mercury, total recoverableMO AVG <= .0003 lb/d all year
001Mercury, total recoverableDAILY MX <= .0007 lb/d all year
001Mercury, total recoverableMO AVG <= .021 ug/L all year
001Mercury, total recoverableDAILY MX <= .043 ug/L all year
001Mercury, total recoverableMO AVG <= .0005 lb/d all year
001Mercury, total recoverableDAILY MX <= .0011 lb/d all year
001Chromium, hexavalent tot recoverableDAILY MX report only all year
001Static Renewal Chronic Pimephales PromelasVALUE report only all year
001Static Renewal Chronic Pimephales PromelasSingle Rdg report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaVALUE report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaSingle Rdg report only all year
002Temperature, water deg. centigradeHA report only all year
002Temperature, water deg. centigradeMX DA AV report only all year
002Temperature, water deg. centigradeINST MAX report only all year
002Flow rateMO AVG report only all year
002Flow rateDAILY MX report only all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedANNL AVG <= 80 lb/d all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Zinc, total recoverableMO AVG <= 85 ug/L all year
002Zinc, total recoverableDAILY MX <= 237 ug/L all year
002Zinc, total recoverableDAILY MX <= 163.5 ug/L all year
002Zinc, total recoverableMO AVG <= .63 lb/d all year
002Zinc, total recoverableDAILY MX <= 1.8 lb/d all year
002Zinc, total recoverableDAILY MX <= 1.66 lb/d all year
002Cadmium, total recoverableMO AVG <= .8 ug/L all year
002Cadmium, total recoverableDAILY MX <= 1.3 ug/L all year
002Cadmium, total recoverableMO AVG <= .007 lb/d all year
002Cadmium, total recoverableDAILY MX <= .013 lb/d all year
002Lead, total recoverableMO AVG <= 32 ug/L all year
002Lead, total recoverableMO AVG <= 16 ug/L all year
002Lead, total recoverableDAILY MX <= 88 ug/L all year
002Lead, total recoverableDAILY MX <= 40 ug/L all year
002Lead, total recoverableMO AVG <= .24 lb/d all year
002Lead, total recoverableMO AVG <= .163 lb/d all year
002Lead, total recoverableDAILY MX <= .66 lb/d all year
002Lead, total recoverableDAILY MX <= .406 lb/d all year
002Copper, total recoverableMO AVG <= 1 ug/L all year
002Copper, total recoverableDAILY MX <= 1 ug/L all year
002Copper, total recoverableMO AVG <= .01 lb/d all year
002Copper, total recoverableDAILY MX <= .01 lb/d all year
002Copper, total recoverableMO AVG <= 56 ug/L all year
002Copper, total recoverableDAILY MX <= 120 ug/L all year
002Copper, total recoverableMO AVG <= .42 lb/d all year
002Copper, total recoverableDAILY MX <= .9 lb/d all year
002Copper, total recoverableMO AVG <= 64 ug/L all year
002Copper, total recoverableDAILY MX <= 130 ug/L all year
002Copper, total recoverableMO AVG <= .48 lb/d all year
002Copper, total recoverableDAILY MX <= .97 lb/d all year
002Copper, total recoverableMO AVG <= 110 ug/L all year
002Copper, total recoverableDAILY MX <= 230 ug/L all year
002Copper, total recoverableMO AVG <= .82 lb/d all year
002Copper, total recoverableDAILY MX <= 1.7 lb/d all year
002Copper, total recoverableMO AVG <= 150 ug/L all year
002Copper, total recoverableDAILY MX <= 300 ug/L all year
002Copper, total recoverableMO AVG <= 1.1 lb/d all year
002Copper, total recoverableDAILY MX <= 2.2 lb/d all year
002Copper, total recoverableMO AVG <= 150 ug/L all year
002Copper, total recoverableDAILY MX <= 300 ug/L all year
002Copper, total recoverableMO AVG <= 1.1 lb/d all year
002Copper, total recoverableDAILY MX <= 2.2 lb/d all year
002E. coliMO AVG <= 126 #/100mL all year
002E. coliDAILY MX <= 576 #/100mL all year
002Mercury, total recoverableMO AVG <= .089 ug/L all year
002Mercury, total recoverableDAILY MX <= .178 ug/L all year
002Mercury, total recoverableMO AVG <= .0009 lb/d all year
002Mercury, total recoverableDAILY MX <= .0018 lb/d all year
002Mercury, total recoverableMO AVG <= .092 ug/L all year
002Mercury, total recoverableDAILY MX <= .185 ug/L all year
002Mercury, total recoverableMO AVG <= .0009 lb/d all year
002Mercury, total recoverableDAILY MX <= .0019 lb/d all year
002Mercury, total recoverableMO AVG <= .123 ug/L all year
002Mercury, total recoverableDAILY MX <= .248 ug/L all year
002Mercury, total recoverableMO AVG <= .0013 lb/d all year
002Mercury, total recoverableDAILY MX <= .0025 lb/d all year
002Mercury, total recoverableMO AVG <= .186 ug/L all year
002Mercury, total recoverableDAILY MX <= .373 ug/L all year
002Mercury, total recoverableMO AVG <= .0019 lb/d all year
002Mercury, total recoverableDAILY MX <= .0038 lb/d all year
002Mercury, total recoverableMO AVG <= 1 ug/L all year
002Mercury, total recoverableDAILY MX <= 2 ug/L all year
002Mercury, total recoverableMO AVG <= .0101 lb/d all year
002Mercury, total recoverableDAILY MX <= .0203 lb/d all year
002FlowMO AVG report only all year
002FlowDAILY MX report only all year
002Static Renewal Chronic Pimephales PromelasVALUE report only all year
002Static Renewal Chronic Pimephales PromelasSingle Rdg report only all year
002TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaVALUE report only all year
002TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaSingle Rdg report only all year
REC1Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC1Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC1Temperature, water deg. centigradeMO MAX report only all year
REC1Temperature, water deg. centigradeDAILY MX report only all year
REC1Temperature, water deg. centigrade7 DA AVG report only all year
REC1Temperature, water deg. centigradeVALUE report only all year
REC1pHINST MIN report only all year
REC1pHINST MAX report only all year
REC1pHVALUE report only all year
REC1Alkalinity, total [as CaCO3]DAILY MX report only all year
REC1Carbon, dissolved organic [as C]DAILY MX report only all year
REC1Hardness, total [as CaCO3]DAILY MX report only all year
REC1Hardness, total [as CaCO3]DAILY MX report only all year
REC1Calcium, dissolved [as Ca]DAILY MX report only all year
REC1Magnesium, dissolved [as Mg]DAILY MX report only all year
REC1Sodium, dissolved [as Na]DAILY MX report only all year
REC1Potassium, dissolved [as K]DAILY MX report only all year
REC1Sulfate, dissolved [as SO4]DAILY MX report only all year
REC1Arsenic, dissolved [as As]DAILY MX report only all year
REC1Cadmium, dissolved [as Cd]DAILY MX report only all year
REC1Cadmium, dissolved [as Cd]DAILY MX report only all year
REC1Copper, dissolved [as Cu]DAILY MX report only all year
REC1Copper, dissolved [as Cu]DAILY MX report only all year
REC1Lead, dissolved [as Pb]DAILY MX report only all year
REC1Lead, dissolved [as Pb]DAILY MX report only all year
REC1Zinc, dissolved [as Zn]DAILY MX report only all year
REC1Zinc, dissolved [as Zn]DAILY MX report only all year
REC1Antimony, dissolved [as Sb]DAILY MX report only all year
REC1Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
REC1Mercury, total recoverableDAILY MX report only all year
REC1Mercury, total recoverableDAILY MX report only all year
REC1Chloride, dissolved [as Cl]DAILY MX report only all year
REC2Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC2Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC2Temperature, water deg. centigradeMO MAX report only all year
REC2Temperature, water deg. centigradeDAILY MX report only all year
REC2Temperature, water deg. centigrade7 DA AVG report only all year
REC2Temperature, water deg. centigradeVALUE report only all year
REC2pHINST MIN report only all year
REC2pHINST MAX report only all year
REC2pHVALUE report only all year
REC2Alkalinity, total [as CaCO3]DAILY MX report only all year
REC2Carbon, dissolved organic [as C]DAILY MX report only all year
REC2Hardness, total [as CaCO3]DAILY MX report only all year
REC2Hardness, total [as CaCO3]DAILY MX report only all year
REC2Calcium, dissolved [as Ca]DAILY MX report only all year
REC2Magnesium, dissolved [as Mg]DAILY MX report only all year
REC2Sodium, dissolved [as Na]DAILY MX report only all year
REC2Potassium, dissolved [as K]DAILY MX report only all year
REC2Sulfate, dissolved [as SO4]DAILY MX report only all year
REC2Cadmium, dissolved [as Cd]DAILY MX report only all year
REC2Cadmium, dissolved [as Cd]DAILY MX report only all year
REC2Copper, dissolved [as Cu]DAILY MX report only all year
REC2Copper, dissolved [as Cu]DAILY MX report only all year
REC2Lead, dissolved [as Pb]DAILY MX report only all year
REC2Lead, dissolved [as Pb]DAILY MX report only all year
REC2Zinc, dissolved [as Zn]DAILY MX report only all year
REC2Zinc, dissolved [as Zn]DAILY MX report only all year
REC2Antimony, dissolved [as Sb]DAILY MX report only all year
REC2Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
REC2Mercury, total recoverableDAILY MX report only all year
REC2Mercury, total recoverableDAILY MX report only all year
REC2Chloride, dissolved [as Cl]DAILY MX 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