MATTESON MARINE SERVICE, INC.

NPDES permit IA0075035 · Minor NON-POTW · administratively continued, expires 2021-12-31 · 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 2021-12-31 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
112required values missing, on 8 form(s)
2of 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (36)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 50 mg/L all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Oil & Grease30DA AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG <= 147.3 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 147 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 178.3 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 298.1 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 135.3 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 179 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 148.7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 252.4 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 211.3 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 161.7 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 148 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 177.9 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 147.3 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 147 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 178.3 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 298.1 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 135.3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 179 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 148.7 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 252.4 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 211.3 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 161.7 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 148 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 177.9 mg/L Oct
001Carbon, tot organic [TOC]30DA AVG <= 50 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 100 mg/L all year
001Chloride [as Cl]30DA AVG <= 5475 mg/L all year
001Chloride [as Cl]DAILY MX <= 5475 mg/L all year
001Iron, total [as Fe]30DA AVG <= 9.146 mg/L all year
001Iron, total [as Fe]DAILY MX <= 9.146 mg/L 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