Manchester Street L.L.C. and Edgewater Generation L.L.C. — NPDES permit RI0000434: limits, due date and EPA's record

Electric Services, major discharger, Providence, Rhode Island. NPDES permit RI0000434 expired Oct 19, 1996; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (36)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	≤ 96 deg F	all year	001
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 8.5 SU	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ 259.2 MGD	all year	001
Chlorine, total residual	monthly average	≤ 200 ug/L	all year	001
Chlorine, total residual	daily maximum	≤ 200 ug/L	all year	001
Temp. diff. between intake and discharge	daily maximum	≤ 17 deg F	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 96 deg F	all year	002
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 8.5 SU	all year	002
Flow, in conduit or thru treatment plant	daily maximum	≤ 230.4 MGD	all year	002
Chlorine, total residual	monthly average	≤ 200 ug/L	all year	002
Chlorine, total residual	daily maximum	≤ 200 ug/L	all year	002
Temp. diff. between intake and discharge	daily maximum	≤ 17 deg F	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	003
Oil & Grease	monthly average	≤ 10 mg/L	all year	003
Oil & Grease	daily maximum	≤ 15 mg/L	all year	003
Flow, in conduit or thru treatment plant	30-day average	≤ 150000 gal/d	all year	003
Flow, in conduit or thru treatment plant	daily maximum	≤ 864000 gal/d	all year	003
pH	minimum	≥ 6.5 SU	all year	004
pH	maximum	≤ 8.5 SU	all year	004
pH	minimum	report only (SU)	all year	004
pH	maximum	report only (SU)	all year	004
Flow, in conduit or thru treatment plant	30-day average	≤ 1 MGD	all year	004
Flow, in conduit or thru treatment plant	daily maximum	≤ 2.9 MGD	all year	004
pH change [range]	maximum	≤ .5 SU	all year	004
pH	minimum	≥ 6.5 SU	all year	007
pH	maximum	≤ 8.5 SU	all year	007
pH	minimum	report only (SU)	all year	007
pH	maximum	report only (SU)	all year	007
Flow, in conduit or thru treatment plant	daily maximum	≤ 1.2 MGD	all year	007
pH change [range]	daily maximum	≤ .5 SU	all year	007
Heat [summer] [per hour]	daily maximum	≤ 1081 MBTU/hr	Apr–Sep	010
Heat [winter] [per hour]	daily maximum	≤ 1081 MBTU/hr	Jan, Feb, Mar, Oct, Nov, Dec	010
Flow, total	daily maximum	≤ 345.5 MGD	all year	010

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/RI0000434 · MCP: https://passage-data.com/mcp