CLEAN HARBORS SAN LEON, INC

NPDES permit TX0117757 · Major NON-POTW · effective, expires 2028-06-19 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 42 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (207)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
001Copper, total [as Cu]DAILY AV <= .0036 mg/L all year
001Copper, total [as Cu]DAILY MX <= .0077 mg/L all year
001Lead, total [as Pb]DAILY AV <= .012 mg/L all year
001Lead, total [as Pb]DAILY MX <= .026 mg/L all year
001Nickel, total [as Ni]DAILY AV <= .011 mg/L all year
001Nickel, total [as Ni]DAILY MX <= .024 mg/L all year
001Zinc, total [as Zn]DAILY AV <= .072 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .153 mg/L all year
001Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 1.76 mg/L all year
001Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= .5 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [as Hg]DAILY AV <= .000034 mg/L all year
001Mercury, total [as Hg]DAILY MX <= .000073 mg/L all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Solids, total suspendedDAILY AV <= 30.6 mg/L all year
101Solids, total suspendedDAILY MX <= 74.1 mg/L all year
101Solids, total suspendedDAILY AV <= 16.5 lb/d all year
101Solids, total suspendedDAILY MX <= 40.1 lb/d all year
101Oil & GreaseDAILY AV <= 38 mg/L all year
101Oil & GreaseDAILY MX <= 127 mg/L all year
101Oil & GreaseDAILY AV <= 20.6 lb/d all year
101Oil & GreaseDAILY MX <= 68.8 lb/d all year
101Arsenic, total [as As]DAILY AV <= .1 mg/L all year
101Arsenic, total [as As]DAILY MX <= .3 mg/L all year
101Arsenic, total [as As]DAILY AV <= .0542 lb/d all year
101Arsenic, total [as As]DAILY MX <= .163 lb/d all year
101Cadmium, total [as Cd]DAILY AV <= .0102 mg/L all year
101Cadmium, total [as Cd]DAILY MX <= .0172 mg/L all year
101Cadmium, total [as Cd]DAILY AV <= .0055 lb/d all year
101Cadmium, total [as Cd]DAILY MX <= .0093 lb/d all year
101Chromium, total [as Cr]DAILY AV <= .323 mg/L all year
101Chromium, total [as Cr]DAILY MX <= .746 mg/L all year
101Chromium, total [as Cr]DAILY AV <= .175 lb/d all year
101Chromium, total [as Cr]DAILY MX <= .404 lb/d all year
101Cobalt, total [as Co]DAILY AV <= 18.8 mg/L all year
101Cobalt, total [as Co]DAILY MX <= 56.4 mg/L all year
101Cobalt, total [as Co]DAILY AV <= 10.1 lb/d all year
101Cobalt, total [as Co]DAILY MX <= 30.5 lb/d all year
101Copper, total [as Cu]DAILY AV <= .242 mg/L all year
101Copper, total [as Cu]DAILY MX <= .5 mg/L all year
101Copper, total [as Cu]DAILY AV <= .131 lb/d all year
101Copper, total [as Cu]DAILY MX <= .271 lb/d all year
101Lead, total [as Pb]DAILY AV <= .16 mg/L all year
101Lead, total [as Pb]DAILY MX <= .35 mg/L all year
101Lead, total [as Pb]DAILY AV <= .086 lb/d all year
101Lead, total [as Pb]DAILY MX <= .189 lb/d all year
101Zinc, total [as Zn]DAILY AV <= 1 mg/L all year
101Zinc, total [as Zn]DAILY MX <= 6 mg/L all year
101Zinc, total [as Zn]DAILY AV <= .542 lb/d all year
101Zinc, total [as Zn]DAILY MX <= 3.25 lb/d all year
101Tin, total [as Sn]DAILY AV <= .165 mg/L all year
101Tin, total [as Sn]DAILY MX <= .335 mg/L all year
101Tin, total [as Sn]DAILY AV <= .089 lb/d all year
101Tin, total [as Sn]DN <= .181 lb/d all year
101Butyl benzyl phthalateDAILY AV <= .0887 mg/L all year
101Butyl benzyl phthalateDAILY MX <= .188 mg/L all year
101Butyl benzyl phthalateDAILY AV <= .048 lb/d all year
101Butyl benzyl phthalateDAILY MX <= .101 lb/d all year
101FluorantheneDAILY AV <= .0268 mg/L all year
101FluorantheneDAILY MX <= .0537 mg/L all year
101FluorantheneDAILY AV <= .014 lb/d all year
101FluorantheneDAILY MX <= .029 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .101 mg/L all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .215 mg/L all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .054 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .116 lb/d all year
101Petrol hydrocarbons, total recoverableDAILY AV report only all year
101Petrol hydrocarbons, total recoverableDAILY MX report only all year
101Petrol hydrocarbons, total recoverableDAILY AV report only all year
101Petrol hydrocarbons, total recoverableDAILY MX report only all year
101Flow, in conduit or thru treatment plantDAILY AV <= .065 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= .105 MGD all year
101Mercury, total [as Hg]DAILY AV <= .005 mg/L all year
101Mercury, total [as Hg]DAILY MX <= .01 mg/L all year
101Mercury, total [as Hg]DAILY AV <= .0027 lb/d all year
101Mercury, total [as Hg]DAILY MX <= .0054 lb/d all year
101n-DecaneDAILY AV <= .437 mg/L all year
101n-DecaneDAILY MX <= .948 mg/L all year
101n-DecaneDAILY AV <= .237 lb/d all year
101n-DecaneDAILY MX <= .514 lb/d all year
101CarbazoleDAILY AV <= .276 mg/L all year
101CarbazoleDAILY MX <= .598 mg/L all year
101CarbazoleDAILY AV <= .149 lb/d all year
101CarbazoleDAILY MX <= .324 lb/d all year
101n-OctadecaneDAILY AV <= .302 mg/L all year
101n-OctadecaneDAILY MX <= .589 mg/L all year
101n-OctadecaneDAILY AV <= .163 lb/d all year
101n-OctadecaneDAILY MX <= .319 lb/d all year
102pHMINIMUM >= 6 SU all year
102pHMAXIMUM <= 9 SU all year
102Solids, total suspendedDAILY AV <= 30.6 mg/L all year
102Solids, total suspendedDAILY MX <= 74.1 mg/L all year
102Solids, total suspendedDAILY AV <= 10.2 lb/d all year
102Solids, total suspendedDAILY MX <= 24.7 lb/d all year
102Oil & GreaseDAILY AV <= 38 mg/L all year
102Oil & GreaseDAILY MX <= 127 mg/L all year
102Oil & GreaseDAILY AV <= 12.6 lb/d all year
102Oil & GreaseDAILY MX <= 42.3 lb/d all year
102Arsenic, total [as As]DAILY AV <= .1 mg/L all year
102Arsenic, total [as As]DAILY MX <= .3 mg/L all year
102Arsenic, total [as As]DAILY AV <= .0334 lb/d all year
102Arsenic, total [as As]DAILY MX <= .1 lb/d all year
102Cadmium, total [as Cd]DAILY AV <= .0102 mg/L all year
102Cadmium, total [as Cd]DAILY MX <= .0172 mg/L all year
102Cadmium, total [as Cd]DAILY AV <= .0034 lb/d all year
102Cadmium, total [as Cd]DAILY MX <= .0057 lb/d all year
102Chromium, total [as Cr]DAILY AV <= .323 mg/L all year
102Chromium, total [as Cr]DAILY MX <= .746 mg/L all year
102Chromium, total [as Cr]DAILY AV <= .107 lb/d all year
102Chromium, total [as Cr]DAILY MX <= .249 lb/d all year
102Cobalt, total [as Co]DAILY AV <= 18.8 mg/L all year
102Cobalt, total [as Co]DAILY MX <= 56.4 mg/L all year
102Cobalt, total [as Co]DAILY AV <= 6.27 lb/d all year
102Cobalt, total [as Co]DAILY MX <= 18.8 lb/d all year
102Copper, total [as Cu]DAILY AV <= .242 mg/L all year
102Copper, total [as Cu]DAILY MX <= .5 mg/L all year
102Copper, total [as Cu]DAILY AV <= .08 lb/d all year
102Copper, total [as Cu]DAILY MX <= .166 lb/d all year
102Lead, total [as Pb]DAILY AV <= .16 mg/L all year
102Lead, total [as Pb]DAILY MX <= .35 mg/L all year
102Lead, total [as Pb]DAILY AV <= .053 lb/d all year
102Lead, total [as Pb]DAILY MX <= .116 lb/d all year
102Zinc, total [as Zn]DAILY AV <= 1 mg/L all year
102Zinc, total [as Zn]DAILY MX <= 6 mg/L all year
102Zinc, total [as Zn]DAILY AV <= .334 lb/d all year
102Zinc, total [as Zn]DAILY MX <= 2 lb/d all year
102Tin, total [as Sn]DAILY AV <= .165 mg/L all year
102Tin, total [as Sn]DAILY MX <= .335 mg/L all year
102Tin, total [as Sn]DAILY AV <= .055 lb/d all year
102Tin, total [as Sn]DN <= .111 lb/d all year
102Butyl benzyl phthalateDAILY AV <= .0887 mg/L all year
102Butyl benzyl phthalateDAILY MX <= .188 mg/L all year
102Butyl benzyl phthalateDAILY AV <= .029 lb/d all year
102Butyl benzyl phthalateDAILY MX <= .062 lb/d all year
102FluorantheneDAILY AV <= .0268 mg/L all year
102FluorantheneDAILY MX <= .0537 mg/L all year
102FluorantheneDAILY AV <= .0089 lb/d all year
102FluorantheneDAILY MX <= .018 lb/d all year
102Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .101 mg/L all year
102Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .215 mg/L all year
102Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .033 lb/d all year
102Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .071 lb/d all year
102Petrol hydrocarbons, total recoverableDAILY AV report only all year
102Petrol hydrocarbons, total recoverableDAILY MX report only all year
102Petrol hydrocarbons, total recoverableDAILY AV report only all year
102Petrol hydrocarbons, total recoverableDAILY MX report only all year
102Flow, in conduit or thru treatment plantDAILY AV <= .04 MGD all year
102Flow, in conduit or thru treatment plantDAILY MX <= .05 MGD all year
102Mercury, total [as Hg]DAILY AV <= .005 mg/L all year
102Mercury, total [as Hg]DAILY MX <= .01 mg/L all year
102Mercury, total [as Hg]DAILY AV <= .0017 lb/d all year
102Mercury, total [as Hg]DAILY MX <= .0033 lb/d all year
102n-DecaneDAILY AV <= .437 mg/L all year
102n-DecaneDAILY MX <= .948 mg/L all year
102n-DecaneDAILY AV <= .145 lb/d all year
102n-DecaneDAILY MX <= .316 lb/d all year
102CarbazoleDAILY AV <= .276 mg/L all year
102CarbazoleDAILY MX <= .598 mg/L all year
102CarbazoleDAILY AV <= .092 lb/d all year
102CarbazoleDAILY MX <= .199 lb/d all year
102n-OctadecaneDAILY AV <= .302 mg/L all year
102n-OctadecaneDAILY MX <= .589 mg/L all year
102n-OctadecaneDAILY AV <= .1 lb/d all year
102n-OctadecaneDAILY MX <= .196 lb/d all year
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)MO AV MN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN >= 80 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)MO AV MN >= 80 % all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP report only all year

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