Monument Chemical Baytown LLC — NPDES permit TX0059285: limits, due date and EPA's record

Industrial Organic Chemicals, Baytown, Texas. NPDES permit TX0059285, in force until Sep 22, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (21)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	daily average	≤ 10 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 25 mg/L	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	daily average	≤ 15 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 40 mg/L	all year	001
Oil & Grease	daily average	≤ 10 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily average	≤ .06 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ .08 MGD	all year	001
Chlorine, total residual	daily maximum	≤ 4 mg/L	all year	001
E. coli	daily average	≤ 126 CFU/100mL	all year	001
E. coli	daily maximum	≤ 394 CFU/100mL	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 200 mg/L	all year	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Oil & Grease	daily maximum	≤ 15 mg/L	all year	002
Phenols	daily maximum	≤ .05 mg/L	all year	002
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0059285 · MCP: https://passage-data.com/mcp