Cossatot Rock, LLC

NPDES permit AR0049034 · Minor NON-POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-03-31 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

0values over a limit
0required values missing, on 0 form(s)
7of 12 forms filed late

Last period with anything received: 2026-08-31.

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 (10)

OutfallParameterStatisticLimitMonths
001Oxygen demand, chem. [low level] [COD]MO AVG <= 50 mg/L all year
001Oxygen demand, chem. [low level] [COD]DAILY MX <= 75 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 35 mg/L all year
001Solids, total suspendedDAILY MX <= 52.5 mg/L all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, 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