Clean Air Act stationary source · ICIS-AIR OK0000004013700058

DKL BIG SPRING LLC / DUNCAN REFINED PRODUCTS TERMINAL, Duncan, OK: Clean Air Act compliance record, inspections, violations, penalties

OperatingOperating status
Minor sourceEmissions classification
No Violation IdentifiedCurrent violation status, as filed
16Compliance evaluations since January 1, 2017
0High-priority violations since January 1, 2017
0Formal enforcement actions since January 1, 2017

DKL BIG SPRING LLC / DUNCAN REFINED PRODUCTS TERMINAL, at 0.5 MILES E OF OLD RFNRY RD, Duncan in Stephens County, Oklahoma, is an operating minor 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 “No Violation Identified”. 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 filed	DKL BIG SPRING LLC / DUNCAN REFINED PRODUCTS TERMINAL
ICIS-AIR ID	OK0000004013700058
EPA facility registry ID	110041345853
Operating status	Operating
Emissions classification	Minor source
Current violation status (ICIS-AIR high-priority violation field)	No Violation Identified
Address	0.5 MILES E OF OLD RFNRY RD, Duncan, OK 73533
County	Stephens County
In a nonattainment county	No (EPA Green Book)
Industry (NAICS)	Merchant wholesalers, nondurable goods (NAICS 4247)
SIC code	5171
EPA region	06

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 DKL BIG SPRING LLC / DUNCAN REFINED PRODUCTS TERMINAL 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

16Evaluations since January 1, 2017
0Full compliance evaluations

Date	What EPA recorded	Agency	Programs
December 30, 2022	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
February 11, 2022	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
October 18, 2021	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 15, 2021	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
August 25, 2020	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
February 10, 2020	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
October 3, 2019	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
July 30, 2019	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
July 30, 2019	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
February 11, 2019	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
August 13, 2018	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
January 24, 2018	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
November 27, 2017	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
October 3, 2017	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
March 2, 2017	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
January 27, 2017	PCE Off-Site	State	40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards

Violations

0Violation determinations since January 1, 2017
0Of them high-priority

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.

EPA’s violation history file holds no violation for ICIS-AIR OK0000004013700058 since January 1, 2017.

Enforcement and penalties

0 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.

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR OK0000004013700058 since January 1, 2017.

Stack tests

0Stack tests since January 1, 2017
0Recorded as failed

EPA’s stack test file holds no test at ICIS-AIR OK0000004013700058 since January 1, 2017.

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.

Watch this source

One source, $99/month. A source: the register entry for a plant, refinery, kiln, generating station, or other fixed installation the agency tracks under the Clean Air Act. Choose “One source” and enter this source’s ICIS-AIR ID, OK0000004013700058.

Start the watch

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 110041345853 there.

Nearby on the register

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

The page covers the Clean Air Act compliance record for DKL BIG SPRING LLC / DUNCAN REFINED PRODUCTS TERMINAL in Duncan, OK, on the ICIS-AIR register. It lists Operating status, Minor source emissions classification, and No Violation Identified as the current violation status. It also lists 16 Compliance evaluations since January 1, 2017, 0 High-priority violations since January 1, 2017, and 0 Formal enforcement actions since January 1, 2017.