Dyer Quarry Inc — NPDES permit PA0226530: limits, due date and EPA's record

Industrial or other facility, Colmar, Pennsylvania. NPDES permit PA0226530, in force until Apr 8, 2031. Last 12 months: no values over a limit, 286 required values missing. Source: EPA ECHO, Oct 22, 2026.

Limits in force (286)

Parameter	Statistic	Limit	Months	Outfall
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous minimum	≥ 6 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
pH	instantaneous maximum	≤ 9 SU	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	001A
Solids, total suspended	monthly average	≤ 35 mg/L	all year	001A
Solids, total suspended	monthly average	≤ 35 mg/L	all year	001A
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	001A
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	001A
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	001A
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	001A
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	001A
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	001A
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
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
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	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
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002A
pH	instantaneous minimum	≥ 6 SU	all year	002A
pH	instantaneous maximum	≤ 9 SU	all year	002A
pH	instantaneous maximum	≤ 9 SU	all year	002A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002A
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002A
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	002A
Solids, total suspended	monthly average	≤ 35 mg/L	all year	002A
Solids, total suspended	monthly average	≤ 35 mg/L	all year	002A
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	002A
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	002A
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	002A
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	002A
Flow, in conduit or thru treatment plant	monthly average	≤ .288 MGD	all year	002A
Flow, in conduit or thru treatment plant	monthly average	≤ .288 MGD	all year	002A
Flow, in conduit or thru treatment plant	daily maximum	≤ 1.296 MGD	all year	002A
Flow, in conduit or thru treatment plant	daily maximum	≤ 1.296 MGD	all year	002A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002A
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	002A
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
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	003
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	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	≤ 90 mg/L	all year	003
Solids, total suspended	instantaneous maximum	≤ 90 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
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	003
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
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
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	004
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	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
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	004
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
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	007
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	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
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	007
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
pH	instantaneous maximum	≤ 9 SU	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	009
Solids, total suspended	monthly average	≤ 35 mg/L	all year	009
Solids, total suspended	monthly average	≤ 35 mg/L	all year	009
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	009
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	009
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	009
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	009
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	009
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	009
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Alkalinity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Acidity, total [as CaCO3]	instantaneous maximum	report only (mg/L)	all year	011
Solids, total suspended	monthly average	≤ 35 mg/L	all year	011
Solids, total suspended	monthly average	≤ 35 mg/L	all year	011
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	011
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	011
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	011
Solids, total suspended	instantaneous maximum	≤ 90 mg/L	all year	011
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	011
Solids, settleable	instantaneous maximum	≤ .5 mL/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011
Alkalinity - Acidity [as CaCO3]	instantaneous minimum	≥ 0 mg/L	all year	011

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