United Stone, LLC

NPDES permit TN0070742 · Minor NON-POTW · effective, expires 2031-04-30 · 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)
2of 2 forms filed late

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

Reporting

Reports are due about 45 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 MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 40 mg/L all year
001Solids, total suspendedMO AVG <= 40 mg/L all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only 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
001Flow, in conduit or thru treatment plantDAILY MX report only all year
SW01pHMINIMUM >= 6 SU (alert) all year
SW01pHMAXIMUM <= 9 SU (alert) all year
SW01Solids, total suspendedMAXIMUM <= 100 mg/L (alert) all year
SW01Oil and grease, hexane extr methodMAXIMUM <= 15 mg/L (alert) all year
SW01Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW01Flow, in conduit or thru treatment plantMAXIMUM report only (alert) all year
SW02pHMINIMUM >= 6 SU (alert) all year
SW02pHMAXIMUM <= 9 SU (alert) all year
SW02Solids, total suspendedMAXIMUM <= 100 mg/L (alert) all year
SW02Oil and grease, hexane extr methodMAXIMUM <= 15 mg/L (alert) all year
SW02Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW02Flow, in conduit or thru treatment plantMAXIMUM report only (alert) all year
SW03pHMINIMUM >= 6 SU (alert) all year
SW03pHMAXIMUM <= 9 SU (alert) all year
SW03Solids, total suspendedMAXIMUM <= 100 mg/L (alert) all year
SW03Oil and grease, hexane extr methodMAXIMUM <= 15 mg/L (alert) all year
SW03Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW03Flow, in conduit or thru treatment plantMAXIMUM report only (alert) all year
SW04pHMINIMUM >= 6 SU (alert) all year
SW04pHMAXIMUM <= 9 SU (alert) all year
SW04Solids, total suspendedMAXIMUM <= 100 mg/L (alert) all year
SW04Oil and grease, hexane extr methodMAXIMUM <= 15 mg/L (alert) all year
SW04Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW04Flow, in conduit or thru treatment plantMAXIMUM report only (alert) 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