Clean Water Act discharge permit · NPDES MO0000345

CENTERSTREAM STL, LLC, St. Louis, MO: NPDES MO0000345 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
3Pollutants with an effluent exceedance

CENTERSTREAM STL, LLC, held by Ashley Energy, LLC, holds NPDES permit MO0000345, which discharges to Tributary To Mississippi R.. EPA’s file records it issued May 16, 2018 and expiring June 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	CENTERSTREAM STL, LLC
Permittee as filed	Ashley Energy, LLC
NPDES ID	MO0000345
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	May 16, 2018
Expiration date	June 30, 2022
Address	St. Louis, MO 63102
Receiving water	Tributary to Mississippi R.
Receiving water impaired	303(D) Listed
Subwatershed	Schoenberger Creek-Mississippi River (HUC 071401010403)
SIC	4939 – Combination Utilities
Other EPA IDs (FRS)	RCRA handler MOD000805499; ICIS-AIR source MO0000002951000038

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
7With a violation of any kind
3With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Oil and grease [soxhlet extr.] tot.	2	6	4	March 31, 2023	61% over the limit
pH	2	3	1	December 31, 2025
Solids, total suspended	2	3	1	September 30, 2019	74% over the limit
Temperature, water deg. fahrenheit	2	4	0
Specific conductance	2	2	0
Flow, in conduit or thru treatment plant	2	2	0
Chemical oxygen demand [COD]	2	2	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

2Single-event violations

Date	What EPA recorded	Agency
December 31, 2019	Reporting Violations - Improper/ Incorrect Reporting	ST6
December 31, 2019	Reporting Violations - Failure to Submit DMRs	ST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MO0000345 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act NPDES permit MO0000345, held by CENTERSTREAM STL, LLC of St. Louis, MO, with Ashley Energy, LLC listed as permittee, and discharging to Tributary To Mississippi R. The permit is administratively continued, with a minor discharger class, issued May 16, 2018 and expiring June 30, 2022, and it lists 7 pollutants under a numeric limit and 3 pollutants with an effluent exceedance. The page reflects EPA's permit file as of October 14, 2026, and the Schoenberger Creek-Mississippi River subwatershed (HUC 071401010403) is noted.