Crucible Zinc, Inc.

NPDES permit TN0029157 · Major NON-POTW · effective, expires 2030-10-31 · 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
9required values missing, on 1 form(s)
0of 36 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 (56)

OutfallParameterStatisticLimitMonths
001ConductivityMO AVG report only all year
001ConductivityDAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 2642 lb/d all year
001Solids, total suspendedDAILY MX <= 5248 lb/d all year
001Arsenic, total [as As]MO AVG <= 16.26 lb/d all year
001Arsenic, total [as As]DAILY MX <= 35.2 lb/d all year
001Cadmium, total [as Cd]MO AVG <= 2.15 lb/d all year
001Cadmium, total [as Cd]DAILY MX <= 5.38 lb/d all year
001Copper, total [as Cu]MO AVG <= 17.3 lb/d all year
001Copper, total [as Cu]DAILY MX <= 36.1 lb/d all year
001Lead, total [as Pb]MO AVG <= 3.46 lb/d all year
001Lead, total [as Pb]DAILY MX <= 7.42 lb/d all year
001Zinc, total [as Zn]MO AVG <= 15 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 35.5 lb/d all year
001Selenium, total [as Se]MO AVG <= 4.68 lb/d all year
001Selenium, total [as Se]DAILY MX <= 62.4 lb/d 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
002pHDAILY MN >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY MX <= 40 mg/L all year
002Cadmium, total [as Cd]DAILY MX report only all year
002Zinc, total [as Zn]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % (alert) all year
002LC50 Static 48Hr Acute Pimephales promelasMINIMUM >= 100 % (alert) all year
SW3pHMINIMUM >= 6 SU (alert) all year
SW3pHMAXIMUM <= 9 SU (alert) all year
SW3Solids, total suspendedDAILY MX report only (alert) all year
SW3Cadmium, total [as Cd]DAILY MX report only (alert) all year
SW3Copper, total [as Cu]DAILY MX report only (alert) all year
SW3Lead, total [as Pb]DAILY MX report only (alert) all year
SW3Zinc, total [as Zn]DAILY MX report only (alert) all year
SW3Flow, in conduit or thru treatment plantMO AVG report only (alert) all year
SW3Flow, in conduit or thru treatment plantDAILY MX report only (alert) all year
SW4pHMINIMUM >= 6 SU (alert) all year
SW4pHMAXIMUM <= 9 SU (alert) all year
SW4Solids, total suspendedDAILY MX report only (alert) all year
SW4Cadmium, total [as Cd]DAILY MX report only (alert) all year
SW4Copper, total [as Cu]DAILY MX report only (alert) all year
SW4Lead, total [as Pb]DAILY MX report only (alert) all year
SW4Zinc, total [as Zn]DAILY MX report only (alert) all year
SW4Flow, in conduit or thru treatment plantMO AVG report only (alert) all year
SW4Flow, in conduit or thru treatment plantDAILY MX report only (alert) all year
SW5pHMINIMUM >= 6 SU (alert) all year
SW5pHMAXIMUM <= 9 SU (alert) all year
SW5Solids, total suspendedDAILY MX report only (alert) all year
SW5Cadmium, total [as Cd]DAILY MX report only (alert) all year
SW5Copper, total [as Cu]DAILY MX report only (alert) all year
SW5Lead, total [as Pb]DAILY MX report only (alert) all year
SW5Zinc, total [as Zn]DAILY MX report only (alert) all year
SW5Flow, in conduit or thru treatment plantMO AVG report only (alert) all year
SW5Flow, in conduit or thru treatment plantDAILY MX 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