DAQ-2025-000741

1
DAQC-113-25
Site ID 14243 (B1)

MEMORANDUM

TO: FILE – TM CRUSHING, LLC – West Jordan Pit

THROUGH: Chad Gilgen, Minor Source Compliance Section Manager

FROM: Irene Tucker, Environmental Scientist

DATE: January 13, 2025

SUBJECT: FULL COMPLIANCE EVALUATION, Minor, Salt Lake County
INSPECTION DATE: April 29, 2024

SOURCE LOCATION: 7800 South Highway 111
West Jordan, UT 84044

SOURCE CONTACT: Nicky Coates, Scale Manager, 801-425-2539
[e-mail]

OPERATING STATUS: No longer in operation.

PROCESS DESCRIPTION: Aggregate pit. A jaw crusher, cone crusher, screen, generator,
and miscellaneous mobile equipment are located on site.
Sources of emissions include those from the crushing and
screening process, haul roads, loader traffic, stockpile, and
disturbed area wind erosion and fuel combustion.

Primary crushing process: This operation involves extraction,
processing, conveying, and stockpiling. Material is delivered to a
crusher by front-end loader. One or more conveyors or belt
feeders transfer the crushed material to a triple deck screen that
classifies the material by size. Material from the screen goes to
different stockpiles via conveyors and/or stackers. Material that
cannot pass through the first set of screens is transferred to a
secondary crusher.

Secondary crushing process: The secondary crushing process is
actually a sub-process of the primary. Material that does not
pass through the triple deck screen can be sent to the secondary
crusher for further size reduction. The crushed material is
transferred by conveyors back to the triple deck screen for size
classification. Secondary crushing is an optional step and may
be added or removed as necessary.

Screening process: Screening is the process of classifying
material that has been crushed. In most cases, the screen unit is
comprised of three decks, each with a different mesh screen.
Material comes from the crusher and is classified by the screen. / :
2
Hauling: The material is taken from the site to the crusher, or
loaded at the crushing site and either stockpiled or taken offsite
for use in other projects.

APPLICABLE REGULATION: Approval Order (AO) DAQE-AN0142430002-11, dated August
9, 2011

SOURCE EVALUATION: The West Jordan Pit is no longer in operation. See pictures of the
current site conditions in the attachment. TM Crushing was
encouraged to submit a request to revoke this AO, however, TM
Crushing prefers not to revoke this AO at this time. See the
email communication in the attachment.

EMISSION INVENTORY:
The emissions listed below are an estimate of the total potential emissions from TM Crushing, LLC -
West Jordan Pit on the Approval Order (AO) DAQE-AN0142430002-11, dated August 9, 2011. The
following information was supplied for supplemental purposes only.

Estimated Criteria Pollutant Potential Emissions
Carbon Monoxide 7.26 tons/yr
Nitrogen Oxides 14.19 tons/yr
Particulate Matter - PM10 9.80 tons/yr
Particulate Matter - PM2.5 8.57 tons/yr
Sulfur Dioxide 0.51 tons/yr
Volatile Organic Compounds 0.89 tons/yr

Estimated Hazardous Air Pollutant Potential Emissions
Generic HAPs (CAS #GHAPS) 20 lbs/yr

PREVIOUS ENFORCEMENT
ACTIONS: No enforcement actions within the past five years.

COMPLIANCE STATUS &
RECOMMENDATIONS: This site is no longer in operation. See pictures of the current site
conditions in the attachment. TM Crushing was encouraged to
submit a request to revoke this AO, however, TM Crushing
prefers not to revoke this AO at this time. See the email
communication in the attachment.

HPV STATUS: Not Applicable.

RECOMMENDATION FOR
NEXT INSPECTION: This site is closed.

RECOMMENDATION FOR
NSR PERMITTING REVIEW: None.

ATTACHMENTS: Email communication and site pictures