Tokai Carbon GE LLC — NPDES permit AR0037851: limits, due date and EPA's record

NPDES permit AR0037851 · Minor NON-POTW · effective, expires 2030-12-31 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-08-31. Most often over: Oil & Grease (3), Solids, total suspended (2), pH (1).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (16)

Outfall	Parameter	Statistic	Limit	Months
003	Oxygen demand, chem. [low level] [COD]	MO AVG	<= 50 mg/L	all year
003	Oxygen demand, chem. [low level] [COD]	DAILY MX	<= 75 mg/L	all year
003	Oxygen demand, chem. [low level] [COD]	MO AVG	<= 74.2 lb/d	all year
003	Oxygen demand, chem. [low level] [COD]	DAILY MX	<= 111.3 lb/d	all year
003	pH	MINIMUM	>= 6 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	Solids, total suspended	MO AVG	<= 20 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 30 mg/L	all year
003	Solids, total suspended	MO AVG	<= 29.7 lb/d	all year
003	Solids, total suspended	DAILY MX	<= 44.5 lb/d	all year
003	Oil & Grease	MO AVG	<= 10 mg/L	all year
003	Oil & Grease	DAILY MX	<= 15 mg/L	all year
003	Oil & Grease	MO AVG	<= 14.8 lb/d	all year
003	Oil & Grease	DAILY MX	<= 22.3 lb/d	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year