American Advanced Technologies LLC — NPDES permit LA0123072: limits, due date and EPA's record

Refuse Systems, Houma, Louisiana. NPDES permit LA0123072 expired Oct 31, 2026. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (91)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 30.6 mg/L	all year	001
Solids, total suspended	monthly average	≤ 30.6 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 74.1 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 74.1 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Arsenic, total [as As]	monthly average	≤ .102 mg/L	all year	001
Arsenic, total [as As]	monthly average	≤ .102 mg/L	all year	001
Arsenic, total [as As]	daily maximum	≤ .242 mg/L	all year	001
Arsenic, total [as As]	daily maximum	≤ .242 mg/L	all year	001
Cadmium, total [as Cd]	monthly average	≤ .0102 mg/L	all year	001
Cadmium, total [as Cd]	monthly average	≤ .0102 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .0172 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .0172 mg/L	all year	001
Chromium, total [as Cr]	daily maximum	≤ .15 mg/L	all year	001
Chromium, total [as Cr]	daily maximum	≤ .15 mg/L	all year	001
Cobalt, total [as Co]	monthly average	≤ 18.8 mg/L	all year	001
Cobalt, total [as Co]	monthly average	≤ 18.8 mg/L	all year	001
Cobalt, total [as Co]	daily maximum	≤ 56.4 mg/L	all year	001
Cobalt, total [as Co]	daily maximum	≤ 56.4 mg/L	all year	001
Copper, total [as Cu]	monthly average	≤ .063 mg/L	all year	001
Copper, total [as Cu]	monthly average	≤ .063 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .148 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .148 mg/L	all year	001
Lead, total [as Pb]	monthly average	≤ .083 mg/L	all year	001
Lead, total [as Pb]	monthly average	≤ .083 mg/L	all year	001
Lead, total [as Pb]	daily maximum	≤ .198 mg/L	all year	001
Lead, total [as Pb]	daily maximum	≤ .198 mg/L	all year	001
Zinc, total [as Zn]	monthly average	≤ .44 mg/L	all year	001
Zinc, total [as Zn]	monthly average	≤ .44 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ 1.05 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ 1.05 mg/L	all year	001
Tin, total [as Sn]	monthly average	≤ .165 mg/L	all year	001
Tin, total [as Sn]	monthly average	≤ .165 mg/L	all year	001
Tin, total [as Sn]	daily maximum	≤ .335 mg/L	all year	001
Tin, total [as Sn]	daily maximum	≤ .335 mg/L	all year	001
Butyl benzyl phthalate	monthly average	≤ .0887 mg/L	all year	001
Butyl benzyl phthalate	monthly average	≤ .0887 mg/L	all year	001
Butyl benzyl phthalate	daily maximum	≤ .1 mg/L	all year	001
Butyl benzyl phthalate	daily maximum	≤ .1 mg/L	all year	001
Fluoranthene	monthly average	≤ .0268 mg/L	all year	001
Fluoranthene	monthly average	≤ .0268 mg/L	all year	001
Fluoranthene	daily maximum	≤ .0537 mg/L	all year	001
Fluoranthene	daily maximum	≤ .0537 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .1 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .1 mg/L	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Priority pollutants scan [yes/no]	minimum	≥ 1 N=0;Y=1	all year	001
Mercury, total [as Hg]	monthly average	≤ .00014 mg/L	all year	001
Mercury, total [as Hg]	monthly average	≤ .00014 mg/L	all year	001
Mercury, total [as Hg]	daily maximum	≤ .00032 mg/L	all year	001
Mercury, total [as Hg]	daily maximum	≤ .00032 mg/L	all year	001
n-Decane	monthly average	≤ .437 mg/L	all year	001
n-Decane	monthly average	≤ .437 mg/L	all year	001
n-Decane	daily maximum	≤ .948 mg/L	all year	001
n-Decane	daily maximum	≤ .948 mg/L	all year	001
Carbazole	monthly average	≤ .276 mg/L	all year	001
Carbazole	monthly average	≤ .276 mg/L	all year	001
Carbazole	daily maximum	≤ .598 mg/L	all year	001
Carbazole	daily maximum	≤ .598 mg/L	all year	001
n-Octadecane	monthly average	≤ .302 mg/L	all year	001
n-Octadecane	monthly average	≤ .302 mg/L	all year	001
n-Octadecane	daily maximum	≤ .589 mg/L	all year	001
n-Octadecane	daily maximum	≤ .589 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Oil & Grease	daily maximum	≤ 15 mg/L	all year	002
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	003
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	003
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	003

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/LA0123072 · MCP: https://passage-data.com/mcp