DERRY STONE & LIME CO INC — NPDES permit PA0601047: limits, due date and EPA's record

NPDES permit PA0601047 · Minor NON-POTW · effective, expires 2028-02-23 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 58 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (308)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. centigrade	INST MAX	report only	all year
001	Temperature, water deg. centigrade	INST MAX	report only	all year
001	Specific conductance	INST MAX	report only	all year
001	Specific conductance	INST MAX	report only	all year
001	pH	INST MIN	>= 6 SU	all year
001	pH	INST MIN	>= 6 SU	all year
001	pH	INST MAX	<= 9 SU	all year
001	pH	INST MAX	<= 9 SU	all year
001	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
001	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
001	Acidity, total [as CaCO3]	INST MAX	report only	all year
001	Acidity, total [as CaCO3]	INST MAX	report only	all year
001	Solids, total suspended	MO AVG	<= 35 mg/L	all year
001	Solids, total suspended	MO AVG	<= 35 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
001	Solids, total suspended	INST MAX	<= 90 mg/L	all year
001	Solids, total suspended	INST MAX	<= 90 mg/L	all year
001	Sulfate, total [as SO4]	INST MAX	report only	all year
001	Sulfate, total [as SO4]	INST MAX	report only	all year
001	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
001	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
001	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
001	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
001	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
001	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
001	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
001	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
001	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
001	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
001	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
001	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
001	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
001	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
001	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
001	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
001	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
001	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
001	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
001	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
001	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
001	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
015	Temperature, water deg. centigrade	INST MAX	report only	all year
015	Temperature, water deg. centigrade	INST MAX	report only	all year
015	Specific conductance	INST MAX	report only	all year
015	Specific conductance	INST MAX	report only	all year
015	pH	INST MIN	>= 6 SU	all year
015	pH	INST MIN	>= 6 SU	all year
015	pH	INST MAX	<= 9 SU	all year
015	pH	INST MAX	<= 9 SU	all year
015	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
015	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
015	Acidity, total [as CaCO3]	INST MAX	report only	all year
015	Acidity, total [as CaCO3]	INST MAX	report only	all year
015	Solids, total suspended	MO AVG	<= 35 mg/L	all year
015	Solids, total suspended	MO AVG	<= 35 mg/L	all year
015	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
015	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
015	Solids, total suspended	INST MAX	<= 90 mg/L	all year
015	Solids, total suspended	INST MAX	<= 90 mg/L	all year
015	Sulfate, total [as SO4]	INST MAX	report only	all year
015	Sulfate, total [as SO4]	INST MAX	report only	all year
015	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
015	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
015	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
015	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
015	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
015	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
015	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
015	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
015	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
015	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
015	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
015	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
015	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
015	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
015	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
015	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
015	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
015	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
015	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
015	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
015	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
015	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
015	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
015	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
016	Temperature, water deg. centigrade	INST MAX	report only	all year
016	Temperature, water deg. centigrade	INST MAX	report only	all year
016	Specific conductance	INST MAX	report only	all year
016	Specific conductance	INST MAX	report only	all year
016	pH	INST MIN	>= 6 SU	all year
016	pH	INST MIN	>= 6 SU	all year
016	pH	INST MAX	<= 9 SU	all year
016	pH	INST MAX	<= 9 SU	all year
016	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
016	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
016	Acidity, total [as CaCO3]	INST MAX	report only	all year
016	Acidity, total [as CaCO3]	INST MAX	report only	all year
016	Solids, total suspended	MO AVG	<= 35 mg/L	all year
016	Solids, total suspended	MO AVG	<= 35 mg/L	all year
016	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
016	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
016	Solids, total suspended	INST MAX	<= 90 mg/L	all year
016	Solids, total suspended	INST MAX	<= 90 mg/L	all year
016	Sulfate, total [as SO4]	INST MAX	report only	all year
016	Sulfate, total [as SO4]	INST MAX	report only	all year
016	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
016	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
016	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
016	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
016	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
016	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
016	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
016	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
016	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
016	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
016	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
016	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
016	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
016	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
016	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
016	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
016	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
016	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
016	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
016	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
016	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
016	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
016	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
016	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
019	Temperature, water deg. centigrade	INST MAX	report only	all year
019	Temperature, water deg. centigrade	INST MAX	report only	all year
019	Specific conductance	INST MAX	report only	all year
019	Specific conductance	INST MAX	report only	all year
019	pH	INST MIN	>= 6 SU	all year
019	pH	INST MIN	>= 6 SU	all year
019	pH	INST MAX	<= 9 SU	all year
019	pH	INST MAX	<= 9 SU	all year
019	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
019	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
019	Acidity, total [as CaCO3]	INST MAX	report only	all year
019	Acidity, total [as CaCO3]	INST MAX	report only	all year
019	Solids, total suspended	MO AVG	<= 35 mg/L	all year
019	Solids, total suspended	MO AVG	<= 35 mg/L	all year
019	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
019	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
019	Solids, total suspended	INST MAX	<= 90 mg/L	all year
019	Solids, total suspended	INST MAX	<= 90 mg/L	all year
019	Sulfate, total [as SO4]	INST MAX	report only	all year
019	Sulfate, total [as SO4]	INST MAX	report only	all year
019	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
019	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
019	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
019	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
019	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
019	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
019	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
019	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
019	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
019	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
019	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
019	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
019	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
019	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
019	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
019	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
019	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
019	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
019	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
019	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
019	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
019	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
019	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
019	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
020	Temperature, water deg. centigrade	INST MAX	report only	all year
020	Temperature, water deg. centigrade	INST MAX	report only	all year
020	Specific conductance	INST MAX	report only	all year
020	Specific conductance	INST MAX	report only	all year
020	pH	INST MIN	>= 6 SU	all year
020	pH	INST MIN	>= 6 SU	all year
020	pH	INST MAX	<= 9 SU	all year
020	pH	INST MAX	<= 9 SU	all year
020	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
020	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
020	Acidity, total [as CaCO3]	INST MAX	report only	all year
020	Acidity, total [as CaCO3]	INST MAX	report only	all year
020	Solids, total suspended	MO AVG	<= 35 mg/L	all year
020	Solids, total suspended	MO AVG	<= 35 mg/L	all year
020	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
020	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
020	Solids, total suspended	INST MAX	<= 90 mg/L	all year
020	Solids, total suspended	INST MAX	<= 90 mg/L	all year
020	Sulfate, total [as SO4]	INST MAX	report only	all year
020	Sulfate, total [as SO4]	INST MAX	report only	all year
020	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
020	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
020	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
020	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
020	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
020	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
020	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
020	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
020	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
020	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
020	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
020	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
020	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
020	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
020	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
020	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
020	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
020	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
020	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
020	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
020	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
020	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
020	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
020	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
021	Temperature, water deg. centigrade	INST MAX	report only	all year
021	Temperature, water deg. centigrade	INST MAX	report only	all year
021	Specific conductance	INST MAX	report only	all year
021	Specific conductance	INST MAX	report only	all year
021	pH	INST MIN	>= 6 SU	all year
021	pH	INST MIN	>= 6 SU	all year
021	pH	INST MAX	<= 9 SU	all year
021	pH	INST MAX	<= 9 SU	all year
021	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
021	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
021	Acidity, total [as CaCO3]	INST MAX	report only	all year
021	Acidity, total [as CaCO3]	INST MAX	report only	all year
021	Solids, total suspended	MO AVG	<= 35 mg/L	all year
021	Solids, total suspended	MO AVG	<= 35 mg/L	all year
021	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
021	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
021	Solids, total suspended	INST MAX	<= 90 mg/L	all year
021	Solids, total suspended	INST MAX	<= 90 mg/L	all year
021	Sulfate, total [as SO4]	INST MAX	report only	all year
021	Sulfate, total [as SO4]	INST MAX	report only	all year
021	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
021	Iron, total [as Fe]	MO AVG	<= 1.5 mg/L	all year
021	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
021	Iron, total [as Fe]	DAILY MX	<= 3 mg/L	all year
021	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
021	Iron, total [as Fe]	INST MAX	<= 3.7 mg/L	all year
021	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
021	Manganese, total [as Mn]	MO AVG	<= 1 mg/L	all year
021	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
021	Manganese, total [as Mn]	DAILY MX	<= 2 mg/L	all year
021	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
021	Manganese, total [as Mn]	INST MAX	<= 2.5 mg/L	all year
021	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
021	Aluminum, total [as Al]	MO AVG	<= .75 mg/L	all year
021	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
021	Aluminum, total [as Al]	DAILY MX	<= .75 mg/L	all year
021	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
021	Aluminum, total [as Al]	INST MAX	<= .75 mg/L	all year
021	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
021	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
021	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
021	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
021	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
021	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
024	Temperature, water deg. centigrade	INST MAX	report only	all year
024	Temperature, water deg. centigrade	INST MAX	report only	all year
024	Specific conductance	INST MAX	report only	all year
024	Specific conductance	INST MAX	report only	all year
024	pH	INST MIN	>= 6 SU	all year
024	pH	INST MIN	>= 6 SU	all year
024	pH	INST MAX	<= 9 SU	all year
024	pH	INST MAX	<= 9 SU	all year
024	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
024	Alkalinity, total [as CaCO3]	INST MAX	report only	all year
024	Acidity, total [as CaCO3]	INST MAX	report only	all year
024	Acidity, total [as CaCO3]	INST MAX	report only	all year
024	Solids, total suspended	MO AVG	<= 35 mg/L	all year
024	Solids, total suspended	MO AVG	<= 35 mg/L	all year
024	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
024	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
024	Solids, total suspended	INST MAX	<= 90 mg/L	all year
024	Solids, total suspended	INST MAX	<= 90 mg/L	all year
024	Sulfate, total [as SO4]	INST MAX	report only	all year
024	Sulfate, total [as SO4]	INST MAX	report only	all year
024	Iron, total [as Fe]	MO AVG	<= 2.5 mg/L	all year
024	Iron, total [as Fe]	MO AVG	<= 2.5 mg/L	all year
024	Iron, total [as Fe]	DAILY MX	<= 5 mg/L	all year
024	Iron, total [as Fe]	DAILY MX	<= 5 mg/L	all year
024	Iron, total [as Fe]	INST MAX	<= 6.2 mg/L	all year
024	Iron, total [as Fe]	INST MAX	<= 6.2 mg/L	all year
024	Manganese, total [as Mn]	MO AVG	<= 1.6 mg/L	all year
024	Manganese, total [as Mn]	MO AVG	<= 1.6 mg/L	all year
024	Manganese, total [as Mn]	DAILY MX	<= 3.2 mg/L	all year
024	Manganese, total [as Mn]	DAILY MX	<= 3.2 mg/L	all year
024	Manganese, total [as Mn]	INST MAX	<= 4 mg/L	all year
024	Manganese, total [as Mn]	INST MAX	<= 4 mg/L	all year
024	Aluminum, total [as Al]	MO AVG	<= 1.2 mg/L	all year
024	Aluminum, total [as Al]	MO AVG	<= 1.2 mg/L	all year
024	Aluminum, total [as Al]	DAILY MX	<= 2.4 mg/L	all year
024	Aluminum, total [as Al]	DAILY MX	<= 2.4 mg/L	all year
024	Aluminum, total [as Al]	INST MAX	<= 3 mg/L	all year
024	Aluminum, total [as Al]	INST MAX	<= 3 mg/L	all year
024	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
024	Flow, in conduit or thru treatment plant	INST MAX	report only	all year
024	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
024	Alkalinity - Acidity [as CaCO3]	INST MIN	>= 0 mg/L	all year
024	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year
024	Osmotic pressure, total, unf whl wtr	INST MAX	report only	all year