Clean Water Act discharge permit · NPDES COG591077

NARROW GAUGE MHP, Durango, CO: NPDES COG591077 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
84Pollutants under a numeric limit
4Pollutants with an effluent exceedance

NARROW GAUGE MHP, held by Narrow Gauge Mobile Home Park, holds NPDES permit COG591077, which discharges to Unnamed Tributary To Brice Draw. EPA’s file records it issued November 19, 2024 and expiring December 31, 2029. 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	NARROW GAUGE MHP
Permittee as filed	Narrow Gauge Mobile Home Park
NPDES ID	COG591077
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	November 19, 2024
Expiration date	December 31, 2029
Address	Durango, CO 81301
Receiving water	Unnamed tributary to Brice Draw
Subwatershed	Cottonwood Gulch-Florida River (HUC 140801040803)
SIC	6515 – Mobile Home Site Operators

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

84Pollutants on file
84Under a numeric limit
72With a violation of any kind
4With 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; the 60 with the most exceedances of 84 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, ammonia total [as N]	48	3	3	January 31, 2025	44% over the limit
Sulfide-hydrogen sulfide [undissociated]	3	2	2	January 31, 2025	2,400% over the limit
Nitrogen, inorganic total	2	2	2	January 31, 2025	24% over the limit
Solids, total suspended	2	1	1	January 31, 2025	620% over the limit
Manganese, dissolved [as Mn]	2	2	0
Cadmium, total recoverable	2	2	0
Lead, total recoverable	2	2	0
Chromium, hexavalent dissolved [as Cr]	2	2	0
Zinc, potentially dissolved	2	2	0
Silver, potentially dissolved	2	2	0
Copper, potentially dissolved	2	2	0
Cadmium, potentially dissolvd	2	2	0
Lead, potentially dissolvd	2	2	0
Manganese, potentially dissolvd	2	2	0
Nickel, potentially dissolvd	2	2	0
Selenium, potentially dissolvd	2	2	0
Uranium, potentially dissolvd	2	2	0
Chromium, trivalent total recoverable	2	2	0
Perfluorooctanoic acid (PFOA)	2	2	0
Perfluorobutanoic acid (PFBA)	2	2	0
Perfluorooctanesulfonamide (PFOSA)	2	2	0
Perfluoropentanoic acid (PFPeA)	2	2	0
Perfluorohexanoic acid (PFHxA)	2	2	0
Perfluoroheptanoic acid (PFHpA)	2	2	0
Perfluorononanoic acid (PFNA)	2	2	0
Perfluorodecanoic acid (PFDA)	2	2	0
Perfluoroundecanoic acid (PFUnA)	2	2	0
Perfluorododecanoic acid (PFDoA)	2	2	0
Perfluorotridecanoic acid (PFTrDA)	2	2	0
Perfluorotetradecanoic acid (PFTeDA)	2	2	0
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)	2	2	0
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)	2	2	0
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)	2	2	0
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)	2	2	0
Perfluorobutanesulfonic acid (PFBS)	2	2	0
Perfluorodecanesulfonic acid (PFDS)	2	2	0
Perfluoroheptanesulfonic acid (PFHpS)	2	2	0
Perfluorohexanesulfonic acid (PFHxS)	2	2	0
Perfluorooctanesulfonic acid (PFOS)	2	2	0
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	2	2	0
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	2	2	0
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	2	2	0
Perfluoropentanesulfonic acid (PFPeS)	2	2	0
Perfluorononanesulfonic acid (PFNS)	2	2	0
Hexafluoropropylene oxide dimer acid (HFPO-DA)	2	2	0
Perfluoro-2-methoxypropanoic acid	2	2	0
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)	2	2	0
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)	2	2	0
Perfluorododecanesulfonic acid (PFDoS)	2	2	0
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)	2	2	0
Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate	2	2	0
Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate	2	2	0
N-methyl perfluorooctanesulfonamide (NMeFOSA)	2	2	0
N-ethyl perfluorooctanesulfonamide (NEtFOSA)	2	2	0
PFAS Sum	2	2	0
3-Perfluoropropyl propanoic acid (3:3 FTCA)	2	2	0
3-Perfluoroheptyl propanoic acid (7:3 FTCA)	2	2	0
Perfluoro-4-methoxybutanoic acid (PFMBA)	2	2	0
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)	2	2	0
Arsenic, total recoverable	1	1	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 COG591077.

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 COG591077 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES COG591077, held by Narrow Gauge Mobile Home Park at NARROW GAUGE MHP in Durango, CO, which discharges to the Unnamed Tributary To Brice Draw in the Cottonwood Gulch-Florida River subwatershed (HUC 140801040803). The page lists 84 pollutants on file, of which 4 have an effluent exceedance, and the permit is shown as effective, issued November 19, 2024 and expiring December 31, 2029.