Clean Water Act discharge permit · NPDES COG900006

APISHAPA COAL BED METHANE OPERATIONS, Las Animas County, CO: NPDES COG900006 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
26Pollutants under a numeric limit
5Pollutants with an effluent exceedance

APISHAPA COAL BED METHANE OPERATIONS, held by Evergreen Natural Resources LLC, holds NPDES permit COG900006, which discharges to Tribs Or Direct To Apishapa River. EPA’s file records it issued January 11, 2002 and expiring January 31, 2007. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	APISHAPA COAL BED METHANE OPERATIONS
Permittee as filed	Evergreen Natural Resources LLC
NPDES ID	COG900006
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
Issued	January 11, 2002
Expiration date	January 31, 2007
Address	Las Animas County, CO
Receiving water	TRIBS OR DIRECT TO APISHAPA RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Mitotes Canyon-Apishapa River (HUC 110200070104)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

26Pollutants on file
26Under a numeric limit
25With a violation of any kind
5With 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
Chloride [as Cl]	810	866	2	June 30, 2020	4% over the limit
LC50 Static Renewal 48Hr Acute Daphnia magna	205	659	2	September 30, 2023	99,999% over the limit
LC50 Static Renewal 96Hr Acute Pimephales promelas	205	659	2	September 30, 2004	99,999% over the limit
pH	1,320	975	1	December 31, 2021
Solids, total suspended	1,316	973	1	June 30, 2012	13% over the limit
Flow, in conduit or thru treatment plant	1,314	979	0
Boron, total [as B]	906	974	0
Solids, total dissolved	816	886	0
Iron, total recoverable	738	656	0
Zinc, potentially dissolved	738	654	0
Selenium, total recoverable	900	652	0
Copper, total recoverable	740	496	0
Oil and grease visual	453	487	0
Oil and grease	452	487	0
Copper, total [as Cu]	414	436	0
Iron, dissolved [as Fe]	418	420	0
Manganese, dissolved [as Mn]	414	416	0
Selenium, total [as Se]	414	416	0
Zinc, total recoverable	580	386	0
Copper, potentially dissolved	580	170	0
Manganese, potentially dissolvd	274	158	0
Toxicity, choice of species	44	138	0
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	44	138	0
%Effect Statre 7Day Chronic D. Magna	44	138	0
%Effect Static Renewal 7Day Chronic Pimephales promelas	43	134	0
Selenium, potentially dissolvd	40	0	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES COG900006.

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.

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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 COG900006 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers the NPDES COG900006 discharge permit held by Evergreen Natural Resources LLC for APISHAPA COAL BED METHANE OPERATIONS in Las Animas County, CO, with permit status shown as administratively continued and discharger class as Minor. The page lists 26 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, with the permit issued January 11, 2002 and expiring January 31, 2007, as EPA's file stood when loaded on September 15, 2026.