W. R. Grace & Co.

NPDES permit TN0073237 · Minor NON-POTW · effective, expires 2029-05-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 4 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among TN permits in EPA's filings — check your permit).

Limits in force (24)

OutfallParameterStatisticLimitMonths
01ApHVALUE report only all year
01ASolids, total suspendedDAILY MX report only all year
01APhosphorus, total [as P]DAILY MX report only all year
01APhosphorus, total [as P]ROLL AVG report only all year
01AMagnesium, total [as Mg]DAILY MX report only all year
01AChloride [as Cl]DAILY MX report only all year
01ACopper, total [as Cu]DAILY MX report only all year
01AIron, total [as Fe]DAILY MX report only all year
01AAluminum, total [as Al]DAILY MX report only all year
01AOil and greaseDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
SWE2pHVALUE report only all year
SWE2Solids, total suspendedDAILY MX report only all year
SWE2Phosphorus, total [as P]DAILY MX report only all year
SWE2Phosphorus, total [as P]ROLL AVG <= .62 mg/L all year
SWE2Magnesium, total [as Mg]DAILY MX report only all year
SWE2Chloride [as Cl]DAILY MX report only all year
SWE2Copper, total [as Cu]DAILY MX report only all year
SWE2Iron, total [as Fe]DAILY MX report only all year
SWE2Aluminum, total [as Al]DAILY MX report only all year
SWE2Oil and greaseDAILY MX report only all year
SWE2Flow, in conduit or thru treatment plantDAILY MX report only all year
SWE2LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM report only all year
SWE2LC50 Static 48Hr Acute Pimephales promelasMINIMUM 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