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Clean Air Act stationary source · ICIS-AIR NV00000032013N0723

TWIN CREEKS MINE, Golconda, NV: Clean Air Act compliance record, inspections, violations, penalties

TWIN CREEKS MINE, at 35 MI NE OF GOLCONDA, N OF MIDAS SR 789, Golconda in Humboldt County, Nevada, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Violation w/in 1 Year”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.

Identity

Facility as filedTWIN CREEKS MINE
ICIS-AIR IDNV00000032013N0723
EPA facility registry ID110000601028
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)Violation w/in 1 Year
Address35 MI NE OF GOLCONDA, N OF MIDAS SR 789, Golconda, NV 89414
CountyHumboldt County
In a nonattainment countyNo (EPA Green Book)
Industry (NAICS)Mining and quarrying (NAICS 2122)
SIC code1041
EPA region09

Cited to the EPA ICIS-AIR facility file (ECHO download).

Programs and pollutants

Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs TWIN CREEKS MINE is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.

Compliance evaluations

DateWhat EPA recordedAgencyPrograms
September 4, 2024FCE On-SiteStateTitle V Permits
September 4, 2024FCE On-SiteStateTitle V Permits
July 12, 2023FCE On-SiteStateTitle V Permits
July 12, 2023FCE On-SiteStateTitle V Permits
September 2, 2021FCE On-SiteStateTitle V Permits
September 2, 2021FCE On-SiteStateTitle V Permits
March 1, 2021PCE On-Site Record/Report ReviewStateTitle V Permits
August 28, 2019FCE On-SiteStateTitle V Permits
March 13, 2018FCE On-SiteStateTitle V Permits

Violations

A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.

DateWhat EPA recordedAgencyPrograms
September 7, 2026Earliest FRV determinationStateTitle V Permits
September 7, 2026Earliest FRV determinationStateTitle V Permits

Enforcement and penalties

2 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.

DateWhat EPA recordedAgencyPenalty, as filed
June 25, 2026Administrative OrderState$0
June 25, 2026Administrative OrderState$0

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR NV00000032013N0723 since January 1, 2017.

Stack tests

DateWhat EPA recordedAgency
August 15, 2024PassState
August 14, 2024PassState
May 1, 2024PassState
April 26, 2024PassState
April 24, 2024FailState
August 10, 2023PassState
August 10, 2023PassState
August 10, 2023PassState
August 10, 2023PassState
May 26, 2023PassState
May 26, 2023PassState
May 26, 2023PassState
October 27, 2022PassState
October 26, 2022PassState
July 6, 2022PassState
April 22, 2022PassState
October 12, 2021PassState
July 19, 2021PassState
April 16, 2021PassState
April 15, 2021PassState
April 14, 2021PassState
December 29, 2020FailState
October 29, 2020PassState
October 26, 2020FailState
September 16, 2020PassState
June 10, 2020FailState
April 2, 2020PassState
April 2, 2020PassState
December 12, 2019PassState
October 22, 2019IncompleteState
August 8, 2019FailState
May 23, 2019IncompleteState
May 23, 2019PassState
May 9, 2019IncompleteState
October 17, 2018IncompleteState
September 25, 2018IncompleteState

Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110000601028 there.

Nearby on the register

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.

What this page shows

This page of the Velarion Records public-records register covers the Clean Air Act compliance record for TWIN CREEKS MINE, Golconda, NV, at 35 MI NE OF GOLCONDA, N OF MIDAS SR 789 in Humboldt County, Nevada. It lists operating status Operating, emissions classification Major source, and current violation status Violation w/in 1 Year, with 9 compliance evaluations, 0 high-priority violations, and 2 formal enforcement actions since January 1, 2017. The ICIS-AIR ID is NV00000032013N0723 and the EPA facility registry ID is 110000601028.