Signal Mountain Cement Co. dba Buzzi Unicem USA

NPDES permit TN0066460 · Minor NON-POTW · expired 2024-08-31 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (35.070361, -85.337389); you set the radius.

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.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

EPA's file shows no filings for this permit in this window. That is a statement about the file, not about the facility.

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).

Outfall 001, form G: files for periods ending in Oct, Nov, Dec

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

pH, minimum at least 6 SU — stricter than 0% of 351 other minor industrial and other permits in Tennessee; 99% have the same limit
pH, maximum 9 SU — stricter than 0% of 370 other minor industrial and other permits in Tennessee; 100% have the same limit

2 other limits: fewer than 20 comparable permits.

Limits in force (12)

Outfall	Parameter	Statistic	Limit	Months
001	pH	minimum	>= 6 SU	all year
001	pH	minimum	>= 6 SU	all year
001	pH	maximum	<= 9 SU	all year
001	pH	maximum	<= 9 SU	all year
001	Flow, in conduit or thru treatment plant	maximum	report only	all year
001	Flow, in conduit or thru treatment plant	maximum	report only	all year
001	Flow, in conduit or thru treatment plant	daily maximum	report only	all year
001	Flow, in conduit or thru treatment plant	daily maximum	report only	all year
001	Suspended Solids, Total	maximum	<= 40 mg/L	all year
001	Suspended Solids, Total	maximum	<= 40 mg/L	all year
001	Suspended Solids, Total	daily maximum	<= 40 mg/L	all year
001	Suspended Solids, Total	daily maximum	<= 40 mg/L	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