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U.S. Department of the Interior, Bureau of Reclamation

Federal facility (Gold Ores), El Dorado County, California. NPDES permit CA0084905, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall 001 form Q quarterly (16 values), outfall INF form Q quarterly (2 values), outfall 001 form Y yearly, outfall 001 form Z every 47 months
Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Specific conductancedaily maximumreport only (umho/cm)all year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Arsenic, total recoverablemonthly average≤ 140 ug/Lall year001
Arsenic, total recoverabledaily maximum≤ 280 ug/Lall year001
Nickel, total recoverablemonthly average≤ 92 ug/Lall year001
Nickel, total recoverabledaily maximum≤ 180 ug/Lall year001
Lead, total recoverablemonthly average≤ 11 ug/Lall year001
Lead, total recoverabledaily maximum≤ 22 ug/Lall year001
Chromium, total recoverablemonthly average≤ 150 ug/Lall year001
Chromium, total recoverabledaily maximum≤ 290 ug/Lall year001
Copper, total recoverablemonthly average≤ 31 ug/Lall year001
Copper, total recoverabledaily maximum≤ 62 ug/Lall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
%Effect Static 4 Day Chronic Raphidocelis subcapitatamonthly medianreport only (% effect)all year001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly medianreport only (% effect)all year001
%Effect Static Renewal 7Day Chronic Pimephales promelasmonthly medianreport only (% effect)all year001
% Survival Static Renewal 96Hr Acute Pimephales promelasminimum≥ 70 % survivalall year001
% Survival Static Renewal 96Hr Acute Pimephales promelasminimum≥ 70 % survivalall year001
% Survival Static Renewal 96Hr Acute Pimephales promelasminimum median≥ 90 % survivalall year001
% Survival Static Renewal 96Hr Acute Pimephales promelasminimum median≥ 90 % survivalall year001
% Survival Flow Through 96Hr Acute Pimephales promelasminimum≥ 70 % survivalall year001
% Survival Flow Through 96Hr Acute Pimephales promelasminimum≥ 70 % survivalall year001
% Survival Flow Through 96Hr Acute Pimephales promelasminimum median≥ 90 % survivalall year001
% Survival Flow Through 96Hr Acute Pimephales promelasminimum median≥ 90 % survivalall year001
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)averagereport only (tox chronic)all year001
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)maximumreport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaaveragereport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiamaximumreport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Pimphales promelasaveragereport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Pimphales promelasmaximumreport only (tox chronic)all year001
Flow, wastewater by-passing trtmnt plantdaily maximumreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

How strict are these limits?

Cited limits by parameter: California's rules and the federal ones.

Same industry: the 5 Metal Mining permits in California.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0084905 · MCP: https://passage-data.com/mcp