Grady Aggregates Corporation

NPDES permit GA0036731 · Minor NON-POTW · administratively continued, expires 2024-01-31 · 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 2024-01-31 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)
9of 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 (14)

OutfallParameterStatisticLimitMonths
001TurbidityDAILY AV <= 50 NTU all year
001TurbidityDAILY MX <= 75 NTU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedDAILY AV <= 25 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Oil & GreaseDAILY AV <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Phosphorus, total [as P]DAILY AV report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001RainfallDAILY AV report only all year
001RainfallDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV 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