H.C. Spinks Clay Company, Inc., dba Lhoist North America

NPDES permit TN0079774 · Minor NON-POTW · effective, expires 2031-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

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

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

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 (12)

OutfallParameterStatisticLimitMonths
3403pHMINIMUM >= 6 SU all year
3403pHMINIMUM >= 6 SU all year
3403pHMAXIMUM <= 9 SU all year
3403pHMAXIMUM <= 9 SU all year
3403Solids, total suspendedMO AVG <= 30 mg/L all year
3403Solids, total suspendedMO AVG <= 30 mg/L all year
3403Solids, total suspendedDAILY MX <= 30 mg/L all year
3403Solids, total suspendedDAILY MX <= 30 mg/L all year
3403Flow, in conduit or thru treatment plantMO AVG report only all year
3403Flow, in conduit or thru treatment plantMO AVG report only all year
3403Flow, in conduit or thru treatment plantDAILY MX report only all year
3403Flow, 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