Clean Harbors Deer Park, LLC — NPDES permit TX0005941: limits, due date and EPA's record

Refuse Systems, major discharger, Deer Park, Texas. NPDES permit TX0005941, in force until Jul 29, 2027. Last 12 months: over a limit 2 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
April 2026	Carbon, tot organic [TOC], daily maximum	34.1 mg/L	≤ 30 mg/L	14%
June 2026	Carbon, tot organic [TOC], daily maximum	250.1 mg/L	≤ 30 mg/L	734%

Limits in force (235)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	≥ 5 SU	all year	002
pH	maximum	≤ 11 SU	all year	002
Oil & Grease	daily maximum	≤ 15 mg/L	all year	002
Carbon, tot organic [TOC]	daily maximum	≤ 30 mg/L	all year	002
Copper, total [as Cu]	daily maximum	≤ 2 mg/L	all year	002
Lead, total [as Pb]	daily maximum	≤ 1.5 mg/L	all year	002
Zinc, total [as Zn]	daily maximum	≤ 6 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
Nonpurgeable Organic Halides	daily maximum	report only (mg/L)	all year	002
Purgeable Organic Halides	daily maximum	report only (mg/L)	all year	002
pH range excursions, > 60 minutes	monthly total	≤ 0 occur/mo	all year	002
pH range excursions, monthly total accum	monthly total	≤ 446 min	all year	002
pH	minimum	≥ 6 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Oil & Grease	daily maximum	≤ 15 mg/L	all year	003
Carbon, tot organic [TOC]	daily maximum	≤ 55 mg/L	all year	003
Copper, total [as Cu]	daily maximum	≤ 2 mg/L	all year	003
Lead, total [as Pb]	daily maximum	≤ 1.5 mg/L	all year	003
Zinc, total [as Zn]	daily maximum	≤ 6 mg/L	all year	003
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Temperature, water deg. fahrenheit	daily maximum	≤ 100 deg F	all year	004
BOD, 5-day, 20 deg. C	daily average	≤ 157 lb/d	all year	004
BOD, 5-day, 20 deg. C	daily maximum	≤ 315 lb/d	all year	004
pH	minimum	≥ 5 SU	all year	004
pH	maximum	≤ 11 SU	all year	004
Solids, total suspended	daily average	≤ 393 lb/d	all year	004
Solids, total suspended	daily maximum	≤ 629 lb/d	all year	004
Oil & Grease	daily average	≤ 157 lb/d	all year	004
Oil & Grease	daily maximum	≤ 235 lb/d	all year	004
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	004
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	004
Carbon, tot organic [TOC]	daily average	≤ 314 lb/d	all year	004
Carbon, tot organic [TOC]	daily maximum	≤ 629 lb/d	all year	004
Cyanide, free [as free]	daily average	≤ .58 lb/d	all year	004
Cyanide, free [as free]	daily maximum	≤ 1.22 lb/d	all year	004
Arsenic, total [as As]	daily average	≤ 15.34 lb/d	all year	004
Arsenic, total [as As]	daily maximum	≤ 32.46 lb/d	all year	004
Cadmium, total [as Cd]	daily average	≤ 4.13 lb/d	all year	004
Cadmium, total [as Cd]	daily maximum	≤ 8.73 lb/d	all year	004
Chromium, hexavalent [as Cr]	daily average	≤ 20.48 lb/d	all year	004
Chromium, hexavalent [as Cr]	daily maximum	≤ 43.39 lb/d	all year	004
Chromium, total [as Cr]	daily average	≤ 1445 lb/d	all year	004
Chromium, total [as Cr]	daily maximum	≤ 3056 lb/d	all year	004
Copper, total [as Cu]	daily average	≤ 2.85 lb/d	all year	004
Copper, total [as Cu]	daily maximum	≤ 6.03 lb/d	all year	004
Lead, total [as Pb]	daily average	≤ 5.79 lb/d	all year	004
Lead, total [as Pb]	daily maximum	≤ 12.25 lb/d	all year	004
Nickel, total [as Ni]	daily average	≤ 5.41 lb/d	all year	004
Nickel, total [as Ni]	daily maximum	≤ 11.44 lb/d	all year	004
Silver, total [as Ag]	daily average	≤ .874 lb/d	all year	004
Silver, total [as Ag]	daily maximum	≤ 1.848 lb/d	all year	004
Zinc, total [as Zn]	daily average	≤ 16.46 lb/d	all year	004
Zinc, total [as Zn]	daily maximum	≤ 34.82 lb/d	all year	004
Selenium, total [as Se]	daily average	≤ 56.2 lb/d	all year	004
Selenium, total [as Se]	daily maximum	≤ 118 lb/d	all year	004
Carbon tetrachloride	daily average	≤ .24 lb/d	all year	004
Carbon tetrachloride	daily maximum	≤ .51 lb/d	all year	004
1,2-Dichloroethane	daily average	≤ .91 lb/d	all year	004
1,2-Dichloroethane	daily maximum	≤ 2.82 lb/d	all year	004
Chloroform	daily average	≤ .28 lb/d	all year	004
Chloroform	daily maximum	≤ .61 lb/d	all year	004
Toluene	daily average	≤ .35 lb/d	all year	004
Toluene	daily maximum	≤ 1.07 lb/d	all year	004
Benzene	daily average	≤ .49 lb/d	all year	004
Benzene	daily maximum	≤ 1.82 lb/d	all year	004
Ethylbenzene	daily average	≤ .42 lb/d	all year	004
Ethylbenzene	daily maximum	≤ 1.44 lb/d	all year	004
Methylene chloride	daily average	≤ .53 lb/d	all year	004
Methylene chloride	daily maximum	≤ 1.19 lb/d	all year	004
Phenanthrene	daily average	≤ .29 lb/d	all year	004
Phenanthrene	daily maximum	≤ .79 lb/d	all year	004
Tetrachloroethylene	daily average	≤ .29 lb/d	all year	004
Tetrachloroethylene	daily maximum	≤ .75 lb/d	all year	004
1,1-Dichloroethylene	daily average	≤ .21 lb/d	all year	004
1,1-Dichloroethylene	daily maximum	≤ .33 lb/d	all year	004
1,1,2-Trichloroethane	daily average	≤ .33 lb/d	all year	004
1,1,2-Trichloroethane	daily maximum	≤ .85 lb/d	all year	004
1,2-Dichlorobenzene	daily average	≤ 1.03 lb/d	all year	004
1,2-Dichlorobenzene	daily maximum	≤ 2.18 lb/d	all year	004
1,2,4-Trichlorobenzene	daily average	≤ .91 lb/d	all year	004
1,2,4-Trichlorobenzene	daily maximum	≤ 1.87 lb/d	all year	004
Phenol	daily average	≤ .2 lb/d	all year	004
Phenol	daily maximum	≤ .35 lb/d	all year	004
Pentachlorophenol	daily average	≤ 1.55 lb/d	all year	004
Pentachlorophenol	daily maximum	≤ 3.29 lb/d	all year	004
Benzidine	daily average	≤ .002 lb/d	all year	004
Benzidine	daily maximum	≤ .003 lb/d	all year	004
Trichloroethylene	daily average	≤ .28 lb/d	all year	004
Trichloroethylene	daily maximum	≤ .72 lb/d	all year	004
Aldrin	daily average	≤ .0000157 lb/d	all year	004
Aldrin	daily maximum	≤ .0000332 lb/d	all year	004
Chlordane [tech mix. and metabolites]	daily average	≤ .00358 lb/d	all year	004
Chlordane [tech mix. and metabolites]	daily maximum	≤ .00759 lb/d	all year	004
Dieldrin	daily average	≤ .0000274 lb/d	all year	004
Dieldrin	daily maximum	≤ .0000579 lb/d	all year	004
Endosulfan, total	daily average	≤ .004 lb/d	all year	004
Endosulfan, total	daily maximum	≤ .007 lb/d	all year	004
Endrin	daily average	≤ .001 lb/d	all year	004
Endrin	daily maximum	≤ .002 lb/d	all year	004
Toxaphene	daily maximum	≤ .0001 lb/d	all year	004
Heptachlor	daily average	≤ .000137 lb/d	all year	004
Heptachlor	daily maximum	≤ .00029 lb/d	all year	004
Heptachlor epoxide	daily average	≤ .000397 lb/d	all year	004
Heptachlor epoxide	daily maximum	≤ .00084 lb/d	all year	004
Polychlorinated biphenyls [PCBs]	daily average	≤ .0005 lb/d	all year	004
Polychlorinated biphenyls [PCBs]	daily maximum	≤ .001 lb/d	all year	004
Malathion	daily average	≤ .004 lb/d	all year	004
Malathion	daily maximum	≤ .009 lb/d	all year	004
Hexachlorobenzene	daily average	≤ .000931 lb/d	all year	004
Hexachlorobenzene	daily maximum	≤ .00197 lb/d	all year	004
Mirex	daily average	≤ .0004 lb/d	all year	004
Mirex	daily maximum	≤ .0009 lb/d	all year	004
Flow, in conduit or thru treatment plant	daily average	≤ 2.88 MGD	all year	004
Flow, in conduit or thru treatment plant	daily maximum	≤ 4.32 MGD	all year	004
Hexachlorophene	daily average	≤ .0076 lb/d	all year	004
Hexachlorophene	daily maximum	≤ .016 lb/d	all year	004
Enterococci	daily average	≤ 35 CFU/100mL	all year	004
Enterococci	daily maximum	≤ 104 CFU/100mL	all year	004
Mercury, total [as Hg]	daily average	≤ .015 lb/d	all year	004
Mercury, total [as Hg]	daily maximum	≤ .032 lb/d	all year	004
2,4,5-Trichlorophenol	daily average	≤ 4.95 lb/d	all year	004
2,4,5-Trichlorophenol	daily maximum	≤ 10.48 lb/d	all year	004
Hexachlorocyclohexane, total	daily average	≤ .016 lb/d	all year	004
Hexachlorocyclohexane, total	daily maximum	≤ .035 lb/d	all year	004
Chlorpyrifos	daily maximum	≤ .002 lb/d	all year	004
pH range excursions, > 60 minutes	monthly total	≤ 0 occur/mo	all year	004
pH range excursions, monthly total accum	monthly total	≤ 446 min	all year	004
BOD, 5-day, 20 deg. C	daily average	≤ 20 mg/L	all year	101
BOD, 5-day, 20 deg. C	daily maximum	≤ 40 mg/L	all year	101
pH	minimum	≥ 6 SU	all year	101
pH	maximum	≤ 9 SU	all year	101
Solids, total suspended	daily average	≤ 30.6 mg/L	all year	101
Solids, total suspended	daily maximum	≤ 74.1 mg/L	all year	101
Oil & Grease	daily average	≤ 10 mg/L	all year	101
Oil & Grease	daily maximum	≤ 15 mg/L	all year	101
Carbon, tot organic [TOC]	daily average	≤ 50 mg/L	all year	101
Carbon, tot organic [TOC]	daily maximum	≤ 100 mg/L	all year	101
Copper, total [as Cu]	daily average	≤ .757 mg/L	all year	101
Copper, total [as Cu]	daily maximum	≤ .865 mg/L	all year	101
Zinc, total [as Zn]	daily average	≤ .42 mg/L	all year	101
Zinc, total [as Zn]	daily maximum	≤ .497 mg/L	all year	101
2,4,6-Trichlorophenol	daily average	≤ .106 mg/L	all year	101
2,4,6-Trichlorophenol	daily maximum	≤ .155 mg/L	all year	101
Phenol	daily average	≤ 1.08 mg/L	all year	101
Phenol	daily maximum	≤ 3.65 mg/L	all year	101
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	101
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	101
o-Cresol	daily average	≤ .561 mg/L	all year	101
o-Cresol	daily maximum	≤ 1.92 mg/L	all year	101
Pyridine	daily average	≤ .182 mg/L	all year	101
Pyridine	daily maximum	≤ .37 mg/L	all year	101
p-Cresol	daily average	≤ .205 mg/L	all year	101
p-Cresol	daily maximum	≤ .698 mg/L	all year	101
2-Butanone	daily average	≤ 1.85 mg/L	all year	101
2-Butanone	daily maximum	≤ 4.81 mg/L	all year	101
Acetone	daily average	≤ 7.97 mg/L	all year	101
Acetone	daily maximum	≤ 30.2 mg/L	all year	101
Acetophenone	daily average	≤ .0562 mg/L	all year	101
Acetophenone	daily maximum	≤ .114 mg/L	all year	101
pH	minimum	≥ 6 SU	all year	201
pH	maximum	≤ 9 SU	all year	201
Solids, total suspended	daily average	≤ 31 mg/L	all year	201
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	201
Oil & Grease	daily average	≤ 50.2 mg/L	all year	201
Oil & Grease	daily maximum	≤ 205 mg/L	all year	201
Cyanide, total [as CN]	daily average	≤ 178 mg/L	all year	201
Cyanide, total [as CN]	daily maximum	≤ 500 mg/L	all year	201
Arsenic, total [as As]	daily average	≤ .104 mg/L	all year	201
Arsenic, total [as As]	daily maximum	≤ .162 mg/L	all year	201
Cadmium, total [as Cd]	daily average	≤ .0962 mg/L	all year	201
Cadmium, total [as Cd]	daily maximum	≤ .474 mg/L	all year	201
Chromium, total [as Cr]	daily average	≤ 3.07 mg/L	all year	201
Chromium, total [as Cr]	daily maximum	≤ 15.5 mg/L	all year	201
Cobalt, total [as Co]	daily average	≤ .124 mg/L	all year	201
Cobalt, total [as Co]	daily maximum	≤ .192 mg/L	all year	201
Copper, total [as Cu]	daily average	≤ 1.06 mg/L	all year	201
Copper, total [as Cu]	daily maximum	≤ 4.14 mg/L	all year	201
Lead, total [as Pb]	daily average	≤ .283 mg/L	all year	201
Lead, total [as Pb]	daily maximum	≤ 1.32 mg/L	all year	201
Nickel, total [as Ni]	daily average	≤ 1.45 mg/L	all year	201
Nickel, total [as Ni]	daily maximum	≤ 3.95 mg/L	all year	201
Silver, total [as Ag]	daily average	≤ .0351 mg/L	all year	201
Silver, total [as Ag]	daily maximum	≤ .12 mg/L	all year	201
Vanadium, total [as V]	daily average	≤ .0662 mg/L	all year	201
Vanadium, total [as V]	daily maximum	≤ .218 mg/L	all year	201
Zinc, total [as Zn]	daily average	≤ .641 mg/L	all year	201
Zinc, total [as Zn]	daily maximum	≤ 2.87 mg/L	all year	201
Antimony, total [as Sb]	daily average	≤ .206 mg/L	all year	201
Antimony, total [as Sb]	daily maximum	≤ .249 mg/L	all year	201
Tin, total [as Sn]	daily average	≤ .12 mg/L	all year	201
Tin, total [as Sn]	daily maximum	≤ .409 mg/L	all year	201
Titanium, total [as Ti]	daily average	≤ .0618 mg/L	all year	201
Titanium, total [as Ti]	daily maximum	≤ .0947 mg/L	all year	201
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	201
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	201
Mercury, total [as Hg]	daily average	≤ .000739 mg/L	all year	201
Mercury, total [as Hg]	daily maximum	≤ .00234 mg/L	all year	201
Whole effluent toxicity - retest #1	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Whole effluent toxicity - retest #1	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
Whole effluent toxicity - retest #2	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Whole effluent toxicity - retest #2	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
Whole Effluent Toxicity [WET] - M. beryllina	7-day minimum	≥ 2.4 %	all year	TX4
Whole Effluent Toxicity [WET] - M. beryllina	monthly average minimum	≥ 2.4 %	all year	TX4
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	≥ 2.4 %	all year	TX4
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	≥ 2.4 %	all year	TX4
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX4
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX4
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX4
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX4
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX4
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX4
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX4
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX4
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (pass=0;fail=1)	all year	TX4
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (pass=0;fail=1)	all year	TX4
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX4
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX4
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX4
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX4
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX4
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX4
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX4
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX4
Whole effluent toxicity - retest #1	single sample	report only (pass=0;fail=1)	all year	TXD
Whole effluent toxicity - retest #2	single sample	report only (pass=0;fail=1)	all year	TXD
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)	single sample	report only (pass=0;fail=1)	all year	TXD
LC50 Pass/Fail Static 24Hr Acute Menidia menidia	single sample	report only (pass=0;fail=1)	all year	TXD

How strict are these limits?

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