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Nachurs Alpine Solutions LLC - ST Gabriel Site

Fertilizers, Mixing Only, Saint Gabriel, Louisiana. NPDES permit LA0127490 expired Jul 31, 2026; its limits still apply. Last 12 months: over a limit 23 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (14 values), form S twice a year, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
15 values over a limit, 0 required values missing, 0 of 15 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 23 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, 5-day, 20 deg. C, daily maximum105 mg/L≤ 92 mg/L14%
November 2025BOD, 5-day, 20 deg. C, monthly average105 mg/L≤ 34 mg/L209%
November 2025Carbon, tot organic [TOC], daily maximum56.4 mg/L≤ 50 mg/L13%
November 2025Solids, total suspended, monthly average77.5 mg/L≤ 49 mg/L58%
December 2025BOD, 5-day, 20 deg. C, monthly average35.8 mg/L≤ 34 mg/L5%
December 2025Coliform, fecal general, daily maximum1000 #/100mL≤ 400 #/100mL150%
December 2025Coliform, fecal general, monthly average1000 #/100mL≤ 200 #/100mL400%
January 2026BOD, 5-day, 20 deg. C, monthly average34.3 mg/L≤ 34 mg/L1%
February 2026BOD, 5-day, 20 deg. C, monthly average79.9 mg/L≤ 34 mg/L135%
February 2026Carbon, tot organic [TOC], daily maximum51.3 mg/L≤ 50 mg/L3%
February 2026Solids, total suspended, monthly average74.7 mg/L≤ 49 mg/L52%
March 2026BOD, 5-day, 20 deg. C, monthly average66.7 mg/L≤ 34 mg/L96%
March 2026Carbon, tot organic [TOC], daily maximum175 mg/L≤ 50 mg/L250%
March 2026Solids, total suspended, monthly average81 mg/L≤ 49 mg/L65%
March 2026pH, instantaneous maximum9.07 SU≤ 9 SU—
June 2026BOD, 5-day, 20 deg. C, monthly average57.8 mg/L≤ 34 mg/L70%
June 2026Carbon, tot organic [TOC], daily maximum63.1 mg/L≤ 50 mg/L26%
June 2026Coliform, fecal general, daily maximum20000 #/100mL≤ 400 #/100mL4900%
June 2026Coliform, fecal general, monthly average20000 #/100mL≤ 200 #/100mL9900%
June 2026Oil & Grease, daily maximum30.9 mg/L≤ 15 mg/L106%
June 2026Solids, total suspended, monthly average74 mg/L≤ 49 mg/L51%
June 2026Zinc, total [as Zn], daily maximum8430 ug/L≤ 2610 ug/L223%
June 2026Zinc, total [as Zn], monthly average8430 ug/L≤ 1050 ug/L703%

Limits in force (132)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 34 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 92 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 49 mg/Lall year
Solids, total suspendeddaily maximum≤ 159 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, organic total [as N]monthly averagereport only (ug/L)all year
Nitrogen, organic total [as N]daily maximumreport only (ug/L)all year
Phosphorus, total [as P]monthly averagereport only (ug/L)all year
Phosphorus, total [as P]daily maximumreport only (ug/L)all year
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year
Cyanide, total [as CN]monthly average≤ 420 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 1200 ug/Lall year
Chromium, total [as Cr]monthly average≤ 1110 ug/Lall year
Chromium, total [as Cr]daily maximum≤ 2770 ug/Lall year
Copper, total [as Cu]monthly average≤ 1450 ug/Lall year
Copper, total [as Cu]daily maximum≤ 3380 ug/Lall year
Lead, total [as Pb]monthly average≤ 320 ug/Lall year
Lead, total [as Pb]daily maximum≤ 690 ug/Lall year
Nickel, total [as Ni]monthly average≤ 1690 ug/Lall year
Nickel, total [as Ni]daily maximum≤ 3980 ug/Lall year
Zinc, total [as Zn]monthly average≤ 1050 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 2610 ug/Lall year
Carbon tetrachloridemonthly average≤ 142 ug/Lall year
Carbon tetrachloridedaily maximum≤ 380 ug/Lall year
1,2-Dichloroethanemonthly average≤ 180 ug/Lall year
1,2-Dichloroethanedaily maximum≤ 574 ug/Lall year
Chloroformmonthly average≤ 111 ug/Lall year
Chloroformdaily maximum≤ 325 ug/Lall year
Toluenemonthly average≤ 28 ug/Lall year
Toluenedaily maximum≤ 74 ug/Lall year
Benzenemonthly average≤ 57 ug/Lall year
Benzenedaily maximum≤ 134 ug/Lall year
Acenaphthylenemonthly average≤ 19 ug/Lall year
Acenaphthylenedaily maximum≤ 47 ug/Lall year
Acenaphthenemonthly average≤ 19 ug/Lall year
Acenaphthenedaily maximum≤ 47 ug/Lall year
Acrylonitrilemonthly average≤ 94 ug/Lall year
Acrylonitriledaily maximum≤ 232 ug/Lall year
Anthracenemonthly average≤ 19 ug/Lall year
Anthracenedaily maximum≤ 47 ug/Lall year
Benzo[b]fluoranthenemonthly average≤ 20 ug/Lall year
Benzo[b]fluoranthenedaily maximum≤ 48 ug/Lall year
Benzo[k]fluoranthenemonthly average≤ 19 ug/Lall year
Benzo[k]fluoranthenedaily maximum≤ 47 ug/Lall year
Benzo[a]pyrenemonthly average≤ 20 ug/Lall year
Benzo[a]pyrenedaily maximum≤ 48 ug/Lall year
Chlorobenzenemonthly average≤ 142 ug/Lall year
Chlorobenzenedaily maximum≤ 380 ug/Lall year
Chrysenemonthly average≤ 19 ug/Lall year
Chrysenedaily maximum≤ 47 ug/Lall year
Diethyl phthalatemonthly average≤ 19 ug/Lall year
Diethyl phthalatedaily maximum≤ 47 ug/Lall year
Dimethyl phthalatemonthly average≤ 19 ug/Lall year
Dimethyl phthalatedaily maximum≤ 47 ug/Lall year
Ethylbenzenemonthly average≤ 142 ug/Lall year
Ethylbenzenedaily maximum≤ 380 ug/Lall year
Fluoranthenemonthly average≤ 22 ug/Lall year
Fluoranthenedaily maximum≤ 54 ug/Lall year
Fluorenemonthly average≤ 19 ug/Lall year
Fluorenedaily maximum≤ 47 ug/Lall year
Hexachlorobutadienemonthly average≤ 142 ug/Lall year
Hexachlorobutadienedaily maximum≤ 380 ug/Lall year
Hexachloroethanemonthly average≤ 196 ug/Lall year
Hexachloroethanedaily maximum≤ 794 ug/Lall year
Methyl chloride [Chloromethane]monthly average≤ 110 ug/Lall year
Methyl chloride [Chloromethane]daily maximum≤ 295 ug/Lall year
Methylene chloridemonthly average≤ 36 ug/Lall year
Methylene chloridedaily maximum≤ 170 ug/Lall year
Nitrobenzenemonthly average≤ 2237 ug/Lall year
Nitrobenzenedaily maximum≤ 6402 ug/Lall year
Phenanthrenemonthly average≤ 19 ug/Lall year
Phenanthrenedaily maximum≤ 47 ug/Lall year
Pyrenemonthly average≤ 20 ug/Lall year
Pyrenedaily maximum≤ 48 ug/Lall year
Tetrachloroethylenemonthly average≤ 52 ug/Lall year
Tetrachloroethylenedaily maximum≤ 164 ug/Lall year
1,1-Dichloroethanemonthly average≤ 22 ug/Lall year
1,1-Dichloroethanedaily maximum≤ 59 ug/Lall year
1,1-Dichloroethylenemonthly average≤ 22 ug/Lall year
1,1-Dichloroethylenedaily maximum≤ 60 ug/Lall year
1,1,1-Trichloroethanemonthly average≤ 22 ug/Lall year
1,1,1-Trichloroethanedaily maximum≤ 59 ug/Lall year
1,1,2-Trichloroethanemonthly average≤ 32 ug/Lall year
1,1,2-Trichloroethanedaily maximum≤ 127 ug/Lall year
Benzo[a]anthracenemonthly average≤ 19 ug/Lall year
Benzo[a]anthracenedaily maximum≤ 47 ug/Lall year
1,2-Dichlorobenzenemonthly average≤ 196 ug/Lall year
1,2-Dichlorobenzenedaily maximum≤ 794 ug/Lall year
1,2-Dichloropropanemonthly average≤ 196 ug/Lall year
1,2-Dichloropropanedaily maximum≤ 794 ug/Lall year
trans-1,2-Dichloroethylenemonthly average≤ 25 ug/Lall year
trans-1,2-Dichloroethylenedaily maximum≤ 66 ug/Lall year
1,2,4-Trichlorobenzenemonthly average≤ 196 ug/Lall year
1,2,4-Trichlorobenzenedaily maximum≤ 794 ug/Lall year
1,3-Dichlorobenzenemonthly average≤ 142 ug/Lall year
1,3-Dichlorobenzenedaily maximum≤ 380 ug/Lall year
1,4-Dichlorobenzenemonthly average≤ 142 ug/Lall year
1,4-Dichlorobenzenedaily maximum≤ 380 ug/Lall year
2-Nitrophenolmonthly average≤ 65 ug/Lall year
2-Nitrophenoldaily maximum≤ 231 ug/Lall year
2,4-Dimethylphenolmonthly average≤ 19 ug/Lall year
2,4-Dimethylphenoldaily maximum≤ 47 ug/Lall year
2,4-Dinitrophenolmonthly average≤ 1207 ug/Lall year
2,4-Dinitrophenoldaily maximum≤ 4291 ug/Lall year
4-Nitrophenolmonthly average≤ 162 ug/Lall year
4-Nitrophenoldaily maximum≤ 57 ug/Lall year
4,6-Dinitro-o-cresolmonthly average≤ 78 ug/Lall year
4,6-Dinitro-o-cresoldaily maximum≤ 277 ug/Lall year
Phenolmonthly average≤ 19 ug/Lall year
Phenoldaily maximum≤ 47 ug/Lall year
Naphthalenemonthly average≤ 19 ug/Lall year
Naphthalenedaily maximum≤ 47 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 95 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 258 ug/Lall year
Di-n-butyl phthalatemonthly average≤ 20 ug/Lall year
Di-n-butyl phthalatedaily maximum≤ 43 ug/Lall year
Vinyl chloridemonthly average≤ 97 ug/Lall year
Vinyl chloridedaily maximum≤ 172 ug/Lall year
Trichloroethylenemonthly average≤ 26 ug/Lall year
Trichloroethylenedaily maximum≤ 69 ug/Lall year
Hexachlorobenzenemonthly average≤ 196 ug/Lall year
Hexachlorobenzenedaily maximum≤ 794 ug/Lall year
Flow, in conduit or thru treatment plantmonthly geometric meanreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
1,3-Dichloropropylenemonthly average≤ 196 ug/Lall year
1,3-Dichloropropylenedaily maximum≤ 794 ug/Lall year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
Chloroethanemonthly average≤ 110 ug/Lall year
Chloroethanedaily maximum≤ 295 ug/Lall year

How strict are these limits?

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

Same industry: the 130 Chemicals and Allied Products permits in Louisiana.

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Your permit document is the final word. As JSON: /api/v1/permits/LA0127490 · MCP: https://passage-data.com/mcp