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CITGO Petroleum Corporation

Petroleum Bulk Stations & Terminals, Knoxville, Tennessee. NPDES permit TN0022411, in force until Apr 30, 2027. Last 12 months: no values over a limit, 1 of 4 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form Q quarterly (10 values)
Renewal application due: Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	Mar, Jun, Sep, Dec
pH	maximum	≤ 9 SU	Mar, Jun, Sep, Dec
Solids, total suspended	daily maximum	≤ 45 mg/L	Mar, Jun, Sep, Dec
Solids, settleable	daily maximum	≤ .5 mL/L	Mar, Jun, Sep, Dec
Oil and grease, hexane extr method	daily maximum	≤ 15 mg/L	Mar, Jun, Sep, Dec
Toluene	daily maximum	≤ 1 mg/L	Mar, Jun, Sep, Dec
Benzene	daily maximum	≤ .07 mg/L	Mar, Jun, Sep, Dec
Ethylbenzene	daily maximum	≤ .2 mg/L	Mar, Jun, Sep, Dec
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	Mar, Jun, Sep, Dec
Xylene [mix of m+o+p]	daily maximum	≤ .5 mg/L	Mar, Jun, Sep, Dec

How strict are these limits?

Solids, settleable, daily maximum .5 mL/L — stricter than 45% of 83 other minor industrial and other permits in Tennessee; 54% have the same limit
Benzene, daily maximum .07 mg/L — stricter than 31% of 147 other minor industrial and other permits nationwide; 1% have the same limit
Xylene [mix of m+o+p], daily maximum .5 mg/L — stricter than 31% of 67 other minor industrial and other permits nationwide; 13% have the same limit

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

Same industry: the 7 Wholesale Trade — Nondurable Goods permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0022411 · MCP: https://passage-data.com/mcp