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Clean Air Act stationary source · ICIS-AIR IN0000001812700036

NLMK INDIANA, Portage, IN: Clean Air Act compliance record, inspections, violations, penalties

NLMK INDIANA, at 6500 S BOUNDARY RD, Portage in Porter County, Indiana, 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 “Unaddressed-State”. Porter County is on EPA’s Green Book list of areas that do not meet a national air quality standard. 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 filedNLMK INDIANA
ICIS-AIR IDIN0000001812700036
EPA facility registry ID110000398212
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)Unaddressed-State
Address6500 S BOUNDARY RD, Portage, IN 46368-1334
CountyPorter County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Primary metal manufacturing (NAICS 3311)
SIC code3312
EPA region05

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 NLMK INDIANA 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
October 15, 2026FCE On-SiteStateTitle V Permits
June 19, 2025FCE On-SiteStateTitle V Permits
July 14, 2023FCE On-SiteStateTitle V Permits
July 30, 2021FCE On-SiteStateTitle V Permits
August 9, 2019FCE On-SiteStateTitle V Permits
July 14, 2017PCE Off-SiteU.S. EPANew Source Performance Standards; Operating Permits
May 10, 2017FCE 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
December 10, 2025HPV day-zero determinationStateTitle V Permits
September 11, 2025Earliest FRV determinationStateTitle V Permits
August 18, 2025Earliest FRV determinationStateTitle V Permits
August 18, 2025Earliest FRV determinationStateTitle V Permits
June 19, 2025Earliest FRV determinationStateTitle V Permits
April 21, 2020HPV day-zero determinationStateTitle V Permits
March 6, 2020Earliest FRV determinationStateTitle V Permits
October 27, 2019HPV day-zero determinationStateTitle V Permits
February 13, 2017HPV day-zero determinationStateTitle V Permits

Enforcement and penalties

6 formal enforcement actions since January 1, 2017, 5 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
May 15, 2026Administrative OrderState$8,750
December 9, 2025Administrative OrderState$500
September 27, 2021Administrative OrderState$45,200
October 5, 2017Administrative OrderState$15,313
June 14, 2017CAA 113D1 Action For PenaltyU.S. EPA$375,027
June 8, 2017CAA 113A Admin Compliance Order (Non-Penalty)U.S. EPA$0

Informal enforcement

DateWhat EPA recordedAgency
December 2, 2025Notice of ViolationState
August 25, 2021Notice of ViolationState
June 21, 2017Notice of ViolationState

Stack tests

The newest 50 of 137.

DateWhat EPA recordedAgency
September 11, 2026PassState
September 11, 2026PassState
September 11, 2026PassState
September 11, 2026PassState
September 11, 2026PassState
September 11, 2026PassState
September 11, 2026PassState
September 10, 2026PassState
September 10, 2026PassState
September 10, 2026FailState
September 10, 2026PassState
September 10, 2026FailState
May 28, 2026PassState
May 28, 2026PassState
May 28, 2026PassState
February 28, 2026PassState
February 28, 2026PassState
February 28, 2026PassState
February 28, 2026PassState
September 13, 2025PassState
September 13, 2025PassState
September 13, 2025PassState
September 13, 2025PassState
September 13, 2025PassState
September 13, 2025PassState
September 13, 2025PassState
September 11, 2025PassState
September 11, 2025PassState
September 11, 2025PassState
September 11, 2025FailState
September 11, 2025PassState
September 11, 2025FailState
October 3, 2024PassState
October 3, 2024PassState
October 3, 2024PassState
October 3, 2024PassState
October 3, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
September 12, 2024PassState
October 13, 2023PassState
October 13, 2023PassState
October 13, 2023PassState
October 13, 2023PassState
October 13, 2023PassState

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 110000398212 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 stationary source record for NLMK INDIANA in Portage, IN, under ICIS-AIR IN0000001812700036. It lists Operating status Operating, Emissions classification Major source, and Current violation status Unaddressed-State. The figures listed are 6 Compliance evaluations since January 1, 2017, 4 High-priority violations since January 1, 2017, and 6 Formal enforcement actions since January 1, 2017.