ALMATIS, INC.

NPDES permit AR0050270 · Minor NON-POTW · administratively continued, expires 2025-06-30 · EPA's file as of 2026-09-19

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Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

2values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-08-31. Most often over: Aluminum, total [as Al] (2).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (51)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 3 mg/L May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 360.3 lb/d all year
001Solids, total suspendedDAILY MX <= 540.4 lb/d all year
001Chloride [as Cl]MO AVG <= 271 mg/L all year
001Chloride [as Cl]DAILY MX <= 406 mg/L all year
001Chloride [as Cl]MO AVG <= 4881.9 lb/d all year
001Chloride [as Cl]DAILY MX <= 7313.8 lb/d all year
001Sulfate, total [as SO4]MO AVG <= 1597 mg/L all year
001Sulfate, total [as SO4]DAILY MX <= 2396 mg/L all year
001Sulfate, total [as SO4]MO AVG <= 28769 lb/d all year
001Sulfate, total [as SO4]DAILY MX <= 43162.5 lb/d all year
001Selenium, total recoverableMO AVG <= 5.6 ug/L all year
001Selenium, total recoverableDAILY MX <= 11.2 ug/L all year
001Selenium, total recoverableMO AVG <= .1 lb/d all year
001Selenium, total recoverableDAILY MX <= .2 lb/d all year
001Zinc, total [as Zn]MO AVG <= 115.6 ug/L all year
001Zinc, total [as Zn]DAILY MX <= 232 ug/L all year
001Zinc, total [as Zn]MO AVG <= 2.1 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 4.2 lb/d all year
001Aluminum, total [as Al]MO AVG <= 1 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
001Aluminum, total [as Al]MO AVG <= 18 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 36 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Solids, total dissolvedMO AVG <= 2595 mg/L all year
001Solids, total dissolvedDAILY MX <= 3893 mg/L all year
001Solids, total dissolvedMO AVG <= 46747.4 lb/d all year
001Solids, total dissolvedDAILY MX <= 70130.1 lb/d all year
TX1WET, sublethal retest #17 DA AVG report only all year
TX1WET, sublethal retest #27 DA AVG report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #37 DA AVG report only all year
TX1Whole Effluent Toxicity [WET] - C. dubiaDLYAVMIN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - C. dubia7 DA MIN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - C. dubiaDLYAVMIN >= 80 % all year
TX1Whole Effluent Toxicity [WET] - C. dubia7 DA MIN >= 80 % all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states