Sha Lake Louise Acid Leachate — NPDES permit MD0056341: limits, due date and EPA's record

Refuse Systems, Garrett County, Maryland. NPDES permit MD0056341, in force until Dec 30, 2027. Last 12 months: over a limit 2 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
December 2025	Manganese, total [as Mn], daily maximum	4.9 mg/L	≤ 4 mg/L	23%
December 2025	Manganese, total [as Mn], monthly average	4.9 mg/L	≤ 2 mg/L	145%

Limits in force (80)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	≥ 6.5 SU	all year	001
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Carbon, dissolved organic [as C]	monthly average	report only (mg/L)	all year	001
Carbon, dissolved organic [as C]	monthly average	report only (mg/L)	all year	001
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	001
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	001
Cadmium, total [as Cd]	maximum monthly average	≤ .00072 mg/L	all year	001
Cadmium, total [as Cd]	maximum monthly average	≤ .00072 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .0018 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .0018 mg/L	all year	001
Copper, total [as Cu]	maximum monthly average	≤ .009 mg/L	all year	001
Copper, total [as Cu]	maximum monthly average	≤ .009 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .013 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .013 mg/L	all year	001
Iron, total [as Fe]	monthly average	≤ 3 mg/L	all year	001
Iron, total [as Fe]	monthly average	≤ 3 mg/L	all year	001
Iron, total [as Fe]	daily maximum	≤ 6 mg/L	all year	001
Iron, total [as Fe]	daily maximum	≤ 6 mg/L	all year	001
Manganese, total [as Mn]	monthly average	≤ 2 mg/L	all year	001
Manganese, total [as Mn]	monthly average	≤ 2 mg/L	all year	001
Manganese, total [as Mn]	daily maximum	≤ 4 mg/L	all year	001
Manganese, total [as Mn]	daily maximum	≤ 4 mg/L	all year	001
Zinc, total [as Zn]	maximum monthly average	≤ .12 mg/L	all year	001
Zinc, total [as Zn]	maximum monthly average	≤ .12 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ .12 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ .12 mg/L	all year	001
Aluminum, total [as Al]	monthly average	report only (mg/L)	all year	001
Aluminum, total [as Al]	monthly average	report only (mg/L)	all year	001
Aluminum, total [as Al]	daily maximum	report only (mg/L)	all year	001
Aluminum, total [as Al]	daily maximum	report only (mg/L)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (gal/d)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (gal/d)	all year	001
Toxicity, Chronic	monthly average	≤ 2 toxic	Mar, Jun, Sep, Dec	001
Toxicity, Chronic	monthly average	≤ 2 toxic	Mar, Jun, Sep, Dec	001
pH	minimum	≥ 6.5 SU	all year	002
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Carbon, dissolved organic [as C]	monthly average	report only (mg/L)	all year	002
Carbon, dissolved organic [as C]	monthly average	report only (mg/L)	all year	002
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	002
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	002
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	002
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	002
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	002
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	002
Cadmium, total [as Cd]	maximum monthly average	≤ .00072 mg/L	all year	002
Cadmium, total [as Cd]	maximum monthly average	≤ .00072 mg/L	all year	002
Cadmium, total [as Cd]	daily maximum	≤ .0018 mg/L	all year	002
Cadmium, total [as Cd]	daily maximum	≤ .0018 mg/L	all year	002
Copper, total [as Cu]	maximum monthly average	≤ .009 mg/L	all year	002
Copper, total [as Cu]	maximum monthly average	≤ .009 mg/L	all year	002
Copper, total [as Cu]	daily maximum	≤ .013 mg/L	all year	002
Copper, total [as Cu]	daily maximum	≤ .013 mg/L	all year	002
Iron, total [as Fe]	monthly average	≤ 3 mg/L	all year	002
Iron, total [as Fe]	monthly average	≤ 3 mg/L	all year	002
Iron, total [as Fe]	daily maximum	≤ 6 mg/L	all year	002
Iron, total [as Fe]	daily maximum	≤ 6 mg/L	all year	002
Manganese, total [as Mn]	monthly average	≤ 2 mg/L	all year	002
Manganese, total [as Mn]	monthly average	≤ 2 mg/L	all year	002
Manganese, total [as Mn]	daily maximum	≤ 4 mg/L	all year	002
Manganese, total [as Mn]	daily maximum	≤ 4 mg/L	all year	002
Zinc, total [as Zn]	maximum monthly average	≤ .12 mg/L	all year	002
Zinc, total [as Zn]	maximum monthly average	≤ .12 mg/L	all year	002
Zinc, total [as Zn]	daily maximum	≤ .12 mg/L	all year	002
Zinc, total [as Zn]	daily maximum	≤ .12 mg/L	all year	002
Aluminum, total [as Al]	monthly average	report only (mg/L)	all year	002
Aluminum, total [as Al]	monthly average	report only (mg/L)	all year	002
Aluminum, total [as Al]	daily maximum	report only (mg/L)	all year	002
Aluminum, total [as Al]	daily maximum	report only (mg/L)	all year	002
Whole effluent toxicity	monthly average	≤ 2 Ratio	all year	002
Whole effluent toxicity	monthly average	≤ 2 Ratio	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (gal/d)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (gal/d)	all year	002

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MD0056341 · MCP: https://passage-data.com/mcp