Kirby Inland Marine, LP — NPDES permit TX0133604: limits, due date and EPA's record

Marine Cargo Handling, Channelview, Texas. NPDES permit TX0133604, in force until Jul 10, 2031. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (18)

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	daily average	≤ 22 mg/L	all year
BOD, 5-day, 20 deg. C	daily maximum	≤ 61 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 26 mg/L	all year
Solids, total suspended	daily maximum	≤ 58 mg/L	all year
Oil & Grease	daily average	≤ 16 mg/L	all year
Oil & Grease	daily maximum	≤ 36 mg/L	all year
Cyanide, free [amenable to chlorination]	daily maximum	report only (mg/L)	all year
Cadmium, total [as Cd]	daily maximum	≤ .02 mg/L	all year
Chromium, total [as Cr]	daily maximum	≤ .42 mg/L	all year
Copper, total [as Cu]	daily maximum	≤ .091 mg/L	all year
Lead, total [as Pb]	daily maximum	≤ .14 mg/L	all year
Nickel, total [as Ni]	daily maximum	≤ .311 mg/L	all year
Zinc, total [as Zn]	daily maximum	≤ .51 mg/L	all year
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	≤ .1 MGD	all year
Mercury, total [as Hg]	daily maximum	≤ .0013 mg/L	all year

New limits from Aug 1, 2029

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Cyanide, free [amenable to chlorination], daily average	0.00878 mg/L	new	—	—
Cyanide, free [amenable to chlorination], daily maximum	0.0186 mg/L	new	0.0061 mg/L (9 values, 1 below detection)	0.328×

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0133604 · MCP: https://passage-data.com/mcp