U. S. Silica Company

NPDES permit TN0067563 · Minor NON-POTW · effective, expires 2031-07-31 · 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 14 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 (16)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Solids, settleableDAILY MX <= .5 mL/L all year
001Oil and greaseMO AVG report only all year
001Oil and greaseDAILY MX <= 15 mg/L 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
SW1pHMINIMUM report only all year
SW1Solids, total suspendedDAILY MX report only all year
SW1Solids, settleableDAILY MX report only all year
SW1Nitrite + Nitrate total [as N]DAILY MX report only all year
SW1Oil and greaseDAILY MX report only all year
SW1Flow, 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