OLIN CORPORATION

NPDES permit LA0102822 · Minor NON-POTW · administratively continued, expires 2025-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
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 2025-10-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among LA permits in EPA's filings — check your permit).

Limits in force (31)

OutfallParameterStatisticLimitMonths
017pHINST MIN >= 6 SU all year
017pHINST MAX <= 9 SU all year
017Oil & GreaseDAILY MX <= 15 mg/L all year
017Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L all year
017Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
017Copper, total [as Cu]DAILY MX <= 1.1 mg/L all year
017Flow, in conduit or thru treatment plantMO AVG report only all year
017Flow, in conduit or thru treatment plantDAILY MX report only all year
018pHINST MIN >= 6 SU all year
018pHINST MAX <= 9 SU all year
018Oil & GreaseDAILY MX <= 15 mg/L all year
018Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L all year
018Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
018Copper, total [as Cu]MO AVG report only all year
018Copper, total [as Cu]DAILY MX report only all year
018Flow, in conduit or thru treatment plantMO AVG report only all year
018Flow, in conduit or thru treatment plantDAILY MX report only all year
030pHINST MIN >= 6 SU all year
030pHINST MAX <= 9 SU all year
030Oil & GreaseDAILY MX <= 15 mg/L all year
030Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L all year
030Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
030Flow, in conduit or thru treatment plantMO AVG report only all year
030Flow, in conduit or thru treatment plantDAILY MX report only all year
033pHINST MIN >= 6 SU all year
033pHINST MAX <= 9 SU all year
033Oil & GreaseDAILY MX <= 15 mg/L all year
033Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L all year
033Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
033Flow, in conduit or thru treatment plantMO AVG report only all year
033Flow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states