ARKEMA, INC — NPDES permit OR0044695: limits, due date and EPA's record

NPDES permit OR0044695 · Minor NON-POTW · administratively continued, expires 2019-03-31 · EPA's file as of 2026-09-19

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2019-03-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

Reporting

Reports are due about 45 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (24)

Outfall	Parameter	Statistic	Limit	Months
004	pH	DAILY MN	>= 6.5 SU	all year
004	pH	DAILY MX	<= 8.5 SU	all year
004	Chloride [as Cl]	MO AVG	<= 3900 mg/L	all year
004	Chloride [as Cl]	DAILY MX	<= 7700 mg/L	all year
004	Iron, total recoverable	MO AVG	<= 820 ug/L	all year
004	Iron, total recoverable	DAILY MX	<= 1600 ug/L	all year
004	Chromium, hexavalent [as Cr]	MO AVG	<= 10 ug/L	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	<= 16 ug/L	all year
004	Cadmium, total recoverable	MO AVG	<= .41 ug/L	all year
004	Cadmium, total recoverable	DAILY MX	<= .83 ug/L	all year
004	Chlorobenzene	MO AVG	<= 74 ug/L	all year
004	Chlorobenzene	DAILY MX	<= 150 ug/L	all year
004	Tetrachloroethylene	MO AVG	<= .5 ug/L	all year
004	Tetrachloroethylene	DAILY MX	<= .5 ug/L	all year
004	2-Chlorophenol	MO AVG	<= 14 ug/L	all year
004	2-Chlorophenol	DAILY MX	<= 28 ug/L	all year
004	4,4'-DDT	MO AVG	<= .01 ug/L	all year
004	4,4'-DDT	DAILY MX	<= .01 ug/L	all year
004	4,4'-DDD	MO AVG	<= .01 ug/L	all year
004	4,4'-DDD	DAILY MX	<= .01 ug/L	all year
004	4,4'-DDE	MO AVG	<= .01 ug/L	all year
004	4,4'-DDE	DAILY MX	<= .01 ug/L	all year
004	Perchlorate [ClO4]	MO AVG	<= 15 ug/L	all year
004	Perchlorate [ClO4]	DAILY MX	<= 30 ug/L	all year