Heidelberg Materials Northeast LLC — NPDES permit PA0224359: limits, due date and EPA's record

Industrial or other facility, Saint Thomas, Pennsylvania. NPDES permit PA0224359, in force until Feb 28, 2031. Last 12 months: no values over a limit, 276 required values missing. Source: EPA ECHO, Oct 22, 2026.

Limits in force (184)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	001
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	001
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	001
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 35 mg/L	all year	001
Solids, total suspended	monthly average	≤ 35 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	001
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	001
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	001
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	001
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	001
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	002
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	002
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	002
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	daily maximum	≤ 9 SU	all year	002
pH	daily maximum	≤ 9 SU	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 35 mg/L	all year	002
Solids, total suspended	monthly average	≤ 35 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	002
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	002
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	002
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	002
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	002
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	002
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	002
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	003
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	003
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	003
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 35 mg/L	all year	003
Solids, total suspended	monthly average	≤ 35 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	003
Solids, total suspended	instantaneous maximum	≤ 35 mg/L	all year	003
Solids, total suspended	instantaneous maximum	≤ 35 mg/L	all year	003
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	003
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	003
Oil & Grease	instantaneous maximum	report only (mg/L)	all year	003
Oil & Grease	instantaneous maximum	report only (mg/L)	all year	003
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	003
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	003
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	003
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	003
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	004
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	004
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	004
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	004
pH	instantaneous maximum	report only (SU)	all year	004
pH	instantaneous maximum	report only (SU)	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
Solids, total suspended	monthly average	≤ 35 mg/L	all year	004
Solids, total suspended	monthly average	≤ 35 mg/L	all year	004
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	004
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	004
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	004
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	004
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	004
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	004
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	004
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	004
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	004
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	004
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	005
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	005
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	005
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
Solids, total suspended	monthly average	≤ 35 mg/L	all year	005
Solids, total suspended	monthly average	≤ 35 mg/L	all year	005
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	005
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	005
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	005
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	005
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	005
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	005
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	005
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	005
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	005
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	005
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	006
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	006
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	006
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
Solids, total suspended	monthly average	≤ 35 mg/L	all year	006
Solids, total suspended	monthly average	≤ 35 mg/L	all year	006
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	006
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	006
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	006
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	006
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	006
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	006
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	006
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	006
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	006
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	006
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	007
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	007
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	007
Specific conductance	instantaneous maximum	report only (umho/cm)	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
Solids, total suspended	monthly average	≤ 35 mg/L	all year	007
Solids, total suspended	monthly average	≤ 35 mg/L	all year	007
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	007
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	007
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	007
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	007
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	007
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	007
Oil & Grease	instantaneous maximum	report only (mg/L)	all year	007
Oil & Grease	instantaneous maximum	report only (mg/L)	all year	007
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	007
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	007
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	007
Flow, in conduit or thru treatment plant	instantaneous minimum	report only (gal/min)	all year	007

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/PA0224359 · MCP: https://passage-data.com/mcp