NRG Dunkirk Power LLC — NPDES permit NY0002321: limits, due date and EPA's record

Electric Services, major discharger, Dunkirk, New York. NPDES permit NY0002321 expired Apr 30, 2015; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (98)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily average	report only (deg F)	all year	001
Temperature, water deg. fahrenheit	daily maximum	report only (deg F)	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95 deg F	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 95 deg F	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .01 mg/L (alert, not enforceable)	all year	001
Lead, total [as Pb]	daily maximum	≤ .005 mg/L (alert, not enforceable)	all year	001
Zinc, total [as Zn]	daily maximum	≤ .03 mg/L (alert, not enforceable)	all year	001
Selenium, total [as Se]	daily maximum	≤ .004 mg/L (alert, not enforceable)	all year	001
Nitrogen, ammonia, total [as NH3]	daily maximum	≤ .4 mg/L (alert, not enforceable)	all year	001
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ 576 MGD	all year	001
Net rate of additionof heat	daily maximum	≤ 3200 MBTU/hr	all year	001
Net rate of additionof heat	daily maximum	≤ 5620 MBTU/hr	all year	001
Temp. diff. between intake and discharge	daily maximum	≤ 16 deg F	all year	001
Temp. diff. between intake and discharge	daily maximum	≤ 16 deg F	all year	001
Temp. diff. between intake and discharge	daily maximum	≤ 28 deg F	all year	001
Temp. difference, winter [deg. F]	daily maximum	≤ 28 deg F	Jan, Feb, Mar, Apr, May, Oct, Nov, Dec	001
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	002
Oil & Grease	daily maximum	≤ 15 mg/L	all year	002
Nitrogen, ammonia total [as N]	daily maximum	≤ .4 mg/L (alert, not enforceable)	all year	002
Chromium, total [as Cr]	daily maximum	≤ .005 mg/L (alert, not enforceable)	all year	002
Copper, total [as Cu]	daily maximum	≤ .01 mg/L (alert, not enforceable)	all year	002
Lead, total [as Pb]	daily maximum	≤ .004 mg/L (alert, not enforceable)	all year	002
Zinc, total [as Zn]	daily maximum	≤ .06 mg/L (alert, not enforceable)	all year	002
Selenium, total [as Se]	daily maximum	≤ .0046 mg/L	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Ammonia [as N] + unionized ammonia	daily maximum	≤ .4 mg/L (alert, not enforceable)	all year	002
pH	minimum	≥ 6 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	003
Oil & Grease	daily maximum	≤ 15 mg/L	all year	003
Copper, total [as Cu]	daily maximum	≤ .02 mg/L (alert, not enforceable)	all year	003
Iron, total [as Fe]	monthly average	≤ 2 mg/L	all year	003
Iron, total [as Fe]	daily maximum	≤ 4 mg/L	all year	003
Zinc, total [as Zn]	daily maximum	≤ .03 mg/L (alert, not enforceable)	all year	003
Nitrogen, ammonia, total [as NH3]	daily maximum	≤ .8 mg/L (alert, not enforceable)	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Flow rate	monthly average	report only (gal/d)	all year	005
Flow rate	daily maximum	report only (gal/d)	all year	005
pH	minimum	≥ 6 SU	all year	005
pH	maximum	≤ 9 SU	all year	005
Solids, total suspended	monthly average	≤ 30 mg/L	all year	005
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	005
Oil & Grease	daily maximum	≤ 15 mg/L	all year	005
Arsenic, total [as As]	monthly average	≤ .05 mg/L	all year	005
Arsenic, total [as As]	daily maximum	≤ .1 mg/L	all year	005
Arsenic, total [as As]	daily maximum	≤ .03 mg/L (alert, not enforceable)	all year	005
Barium, total [as Ba]	daily maximum	≤ 10 mg/L	all year	005
Chromium, hexavalent [as Cr]	monthly average	≤ .05 mg/L	all year	005
Chromium, hexavalent [as Cr]	daily maximum	≤ .1 mg/L	all year	005
Chromium, hexavalent [as Cr]	daily maximum	≤ .02 mg/L (alert, not enforceable)	all year	005
Chromium, hexavalent [as Cr]	daily maximum	≤ .02 mg/L (alert, not enforceable)	all year	005
Chromium, total [as Cr]	monthly average	≤ .5 mg/L	all year	005
Chromium, total [as Cr]	daily maximum	≤ 1 mg/L	all year	005
Chromium, total [as Cr]	daily maximum	≤ .04 mg/L (alert, not enforceable)	all year	005
Chromium, total [as Cr]	daily maximum	≤ .04 mg/L (alert, not enforceable)	all year	005
Copper, total [as Cu]	daily maximum	≤ .16 mg/L	all year	005
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	005
Lead, total [as Pb]	daily maximum	≤ .05 mg/L	all year	005
Manganese, total [as Mn]	monthly average	≤ 1 mg/L	all year	005
Manganese, total [as Mn]	daily maximum	≤ 2 mg/L	all year	005
Manganese, total [as Mn]	daily maximum	≤ .02 mg/L (alert, not enforceable)	all year	005
Nickel, total [as Ni]	daily maximum	≤ .86 mg/L	all year	005
Nickel, total [as Ni]	daily maximum	≤ .02 mg/L (alert, not enforceable)	all year	005
Zinc, total [as Zn]	daily maximum	≤ .3 mg/L	all year	005
Zinc, total [as Zn]	daily maximum	≤ .01 mg/L (alert, not enforceable)	all year	005
Aluminum, dissolved [as Al]	daily maximum	≤ 1 mg/L	all year	005
Cadmium, total recoverable	daily maximum	≤ .02 mg/L	all year	005
Selenium, total [as Se]	daily maximum	≤ .01 mg/L	all year	005
Selenium, total [as Se]	daily maximum	≤ .15 mg/L	all year	005
Nitrogen, ammonia, total [as NH3]	daily maximum	≤ 10 mg/L	all year	005
Mercury, total [as Hg]	daily maximum	≤ 9.99 ng/L	all year	005
pH	minimum	≥ 6 SU	all year	006
pH	maximum	≤ 9 SU	all year	006
Solids, total suspended	monthly average	≤ 30 mg/L	all year	006
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	006
Oil & Grease	daily maximum	≤ 15 mg/L	all year	006
Nitrogen, ammonia total [as N]	daily maximum	≤ .4 mg/L (alert, not enforceable)	all year	006
Chromium, total [as Cr]	daily maximum	≤ .005 mL/L (alert, not enforceable)	all year	006
Copper, total [as Cu]	daily maximum	≤ .01 mg/L (alert, not enforceable)	all year	006
Lead, total [as Pb]	daily maximum	≤ .004 mg/L (alert, not enforceable)	all year	006
Zinc, total [as Zn]	daily maximum	≤ .06 mg/L (alert, not enforceable)	all year	006
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	006
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	006
Ammonia [as N] + unionized ammonia	daily maximum	≤ .4 mg/L (alert, not enforceable)	all year	006

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/NY0002321 · MCP: https://passage-data.com/mcp