Passage Data · Check a report · Use it from your AI

Signal Mountain Cement Company dba Buzzi Unicem USA

Cement, Hydraulic, Chattanooga, Tennessee. NPDES permit TN0001830, in force until Jul 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (5 values), outfall SW2 form Q quarterly (5 values), outfall SW3 form Q quarterly (5 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (15)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
pHminimum≥ 5 SU (alert, not enforceable)Mar, Jun, Sep, DecSW2
pHmaximum≤ 9 SU (alert, not enforceable)Mar, Jun, Sep, DecSW2
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)Mar, Jun, Sep, DecSW2
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar, Jun, Sep, DecSW2
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Mar, Jun, Sep, DecSW2
pHminimum≥ 5 SU (alert, not enforceable)Mar, Jun, Sep, DecSW3
pHmaximum≤ 9 SU (alert, not enforceable)Mar, Jun, Sep, DecSW3
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)Mar, Jun, Sep, DecSW3
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar, Jun, Sep, DecSW3
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Mar, Jun, Sep, DecSW3

How strict are these limits?

Cited limits by parameter: Tennessee's rules and the federal ones.

Same industry: the 7 Stone, Clay, Glass and Concrete Products permits in Tennessee.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0001830 · MCP: https://passage-data.com/mcp