Clean Water Act discharge permit · NPDES MO0107701

USDOE, WELDON SPRING CHEM PLANT, Weldon Spring, MO: NPDES MO0107701 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
19Pollutants under a numeric limit
0Pollutants with an effluent exceedance

USDOE, WELDON SPRING CHEM PLANT, held by USDOE, holds NPDES permit MO0107701, which discharges to Missouri River. EPA’s file records it issued November 29, 2017 and expiring September 30, 2020. 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.

What the register holds for USDOE, WELDON SPRING CHEM PLANT: its NPDES ID, its permit type and status, its dates, its address in Weldon Spring, Missouri, its receiving water, and 19 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MO0107701.

Identity

Facility as filed	USDOE, WELDON SPRING CHEM PLANT
Permittee as filed	USDOE
NPDES ID	MO0107701
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Federal facility
Issued	November 29, 2017
Expiration date	September 30, 2020
Address	Weldon Spring, MO 63304
Receiving water	Missouri River
Subwatershed	Wildhorse Creek-Missouri River (HUC 103002000607)
SIC	4953 – Refuse Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

19Pollutants on file
19Under a numeric limit
0With a violation of any kind
0With 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
BOD, 5-day, 20 deg. C	2	0	0
pH	2	0	0
Solids, total suspended	2	0	0
Nitrogen, ammonia total [as N]	2	0	0
Cyanide, free [amenable to chlorination]	2	0	0
Arsenic, total [as As]	2	0	0
Chromium, total [as Cr]	2	0	0
Zinc, total [as Zn]	2	0	0
Phenol	2	0	0
Naphthalene	2	0	0
Flow, in conduit or thru treatment plant	2	0	0
Pyridine	2	0	0
Aniline	2	0	0
p-Cresol	2	0	0
Benzoic acids, total	2	0	0
.alpha.-Terpineol	2	0	0
Alpha gross radioactivity	2	0	0
Toxicity [acute], Ceriodaphnia dubia	1	0	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0107701.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0107701.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MO0107701.

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How we handle your data → Privacy

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 MO0107701 there.

Nearby on the register

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

This public-records page covers the NPDES MO0107701 discharge permit held by USDOE for the WELDON SPRING CHEM PLANT in Weldon Spring, Missouri, which discharges to the Missouri River, with a status of administratively continued and a minor discharger class. The page lists 19 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.