Laurel Prep PLT LLC — NPDES permit PA0236306: limits, due date and EPA's record

Bituminous Coal And Lignite - Surface, Central City, Pennsylvania. NPDES permit PA0236306 expired May 13, 2025; its limits still apply. Last 12 months: no values over a limit, 74 required values missing. Source: EPA ECHO, Oct 22, 2026.

Limits in force (49)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	≥ 6 SU	all year
pH	instantaneous minimum	≥ 6 SU	all year
pH	instantaneous maximum	≤ 9 SU	all year
pH	instantaneous maximum	≤ 9 SU	all year
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year
Solids, total suspended	monthly average	≤ 35 mg/L	all year
Solids, total suspended	monthly average	≤ 35 mg/L	all year
Solids, total suspended	daily maximum	≤ 70 mg/L	all year
Solids, total suspended	daily maximum	≤ 70 mg/L	all year
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year
Chloride [as Cl]	instantaneous maximum	report only (mg/L)	all year
Chloride [as Cl]	instantaneous maximum	report only (mg/L)	all year
Sulfate, total [as SO4]	instantaneous maximum	report only (mg/L)	all year
Sulfate, total [as SO4]	instantaneous maximum	report only (mg/L)	all year
Iron, total [as Fe]	monthly average	≤ 1.5 mg/L	all year
Iron, total [as Fe]	monthly average	≤ 1.5 mg/L	all year
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year
Iron, total [as Fe]	instantaneous maximum	≤ 3.8 mg/L	all year
Iron, total [as Fe]	instantaneous maximum	≤ 3.8 mg/L	all year
Manganese, total [as Mn]	monthly average	≤ 1 mg/L	all year
Manganese, total [as Mn]	monthly average	≤ 1 mg/L	all year
Manganese, total [as Mn]	daily maximum	≤ 2 mg/L	all year
Manganese, total [as Mn]	daily maximum	≤ 2 mg/L	all year
Manganese, total [as Mn]	instantaneous maximum	≤ 2.5 mg/L	all year
Manganese, total [as Mn]	instantaneous maximum	≤ 2.5 mg/L	all year
Aluminum, total [as Al]	monthly average	≤ .75 mg/L	all year
Aluminum, total [as Al]	monthly average	≤ .75 mg/L	all year
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year
Aluminum, total [as Al]	instantaneous maximum	≤ .75 mg/L	all year
Aluminum, total [as Al]	instantaneous maximum	≤ .75 mg/L	all year
Flow, in conduit or thru treatment plant	instantaneous maximum	report only (MGD)	all year
Flow, in conduit or thru treatment plant	instantaneous maximum	report only (MGD)	all year
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year
Solids, total dissolved	monthly average	≤ 5000 lb/d	all year
Solids, total dissolved	monthly average	≤ 5000 lb/d	all year
Solids, total dissolved	annual average	≤ 5000 lb/d	all year
Osmotic pressure, total, unf whl wtr	monthly average	≤ 50 mOsm/kg	all year
Osmotic pressure, total, unf whl wtr	monthly average	≤ 50 mOsm/kg	all year
Osmotic pressure, total, unf whl wtr	daily maximum	≤ 50 mOsm/kg	all year
Osmotic pressure, total, unf whl wtr	daily maximum	≤ 50 mOsm/kg	all year
Osmotic pressure, total, unf whl wtr	instantaneous maximum	≤ 50 mOsm/kg	all year
Osmotic pressure, total, unf whl wtr	instantaneous maximum	≤ 50 mOsm/kg	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/PA0236306 · MCP: https://passage-data.com/mcp