COOPER NATURAL RESOURCES INC.

NPDES permit TX0112038 · Minor NON-POTW · administratively continued, expires 2025-07-09 · EPA's file as of 2026-09-19

Check this month's numbers before you file
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 2025-07-09 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

0values over a limit
0required values missing, on 0 form(s)
6of 33 forms filed late

Last period with anything received: 2026-07-31.

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 (39)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Chloride [as Cl]DAILY AV report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY AV report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV <= 2 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 2.5 MGD all year
001Solids, total dissolvedDAILY AV report only all year
001Solids, total dissolvedDAILY MX report only all year
001Specific gravityDAILY AV report only all year
001Specific gravityDAILY MX report only all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 20 mg/L all year
002Chloride [as Cl]DAILY AV report only all year
002Chloride [as Cl]DAILY MX report only all year
002Sulfate, total [as SO4]DAILY AV report only all year
002Sulfate, total [as SO4]DAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Solids, total dissolvedDAILY AV report only all year
002Solids, total dissolvedDAILY MX report only all year
002Specific gravityDAILY AV report only all year
002Specific gravityDAILY MX report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 20 mg/L all year
003Chloride [as Cl]DAILY AV report only all year
003Chloride [as Cl]DAILY MX report only all year
003Sulfate, total [as SO4]DAILY AV report only all year
003Sulfate, total [as SO4]DAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Solids, total dissolvedDAILY AV report only all year
003Solids, total dissolvedDAILY MX report only all year
003Specific gravityDAILY AV report only all year
003Specific gravityDAILY MX 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