DAQ-2024-011003

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DAQC-CI109580001-24
Site ID 10958 (B1)
MEMORANDUM

TO: FILE – CERROWIRE – Wire Coating Facility

THROUGH: Chad Gilgen, Minor Source Compliance Section Manager

FROM: Daniel Riddle, Environmental Scientist

DATE: October 8, 2024

SUBJECT: PARTIAL COMPLIANCE EVALUATION, Minor, Weber County

INSPECTION DATE: September 11, 2024

SOURCE LOCATION: 1160 West 2150 North
Ogden, UT 84404
SOURCE CONTACTS: Carrie Scott, Inspection Contact
[e-mail]

OPERATING STATUS: Normal Operation.

PROCESS DESCRIPTION: Cerrowire operates a wire manufacturing facility in Ogden. High
purity copper rod is extruded to a desired gauge by drawing the
metal through a series of dies. The wire is then made pliable by
sending an electric current through the stretched wire. The
stretched pliable wire is then drawn through a wire coating
extruder. Palletized PVC pellets are used to cover and insulate
the copper rod. Resins are forced into a heated extruder head by
auger and melted at approximately 350 degrees F. The wire then
passes through the heated coating extruder head at a specific
speed according to coating thickness desired. Next, the wire
passes through a trough full of water used for cooling and curing
the insulation. The final product is then put on spools for storage,
shipping, or for jacketing.

The jacketing process entails bundling and wrapping the
insulated wire into a PVC casing. A variety of jacketed wires are
manufactured depending on the desired applications. Inks are
used to print wire specifications on the wire insulation at regular
intervals. The final coated wires are then trucked to the
customer.

Cerrowire is currently using PVC pellets for the insulation and
jacketing processes, rather than resin powder. The silos that were
once used to store resin powder are now used to store the pellets.
The mixing compartments and chiller system have been
removed, as the company no longer use a powder process.
Pressurized baghouses venting to the atmosphere are also no
longer used as there are no powder emissions. The pellets are
loaded into the silos pneumatically.

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APPLICABLE REGULATIONS: Formerly, Approval Order (AO) DAQE-672-97, dated August 4,
1997
Currently, Small Source Exemption DAQE-EN109580004-24,
dated February 22, 2024
SOURCE EVALUATION:

Name of Permittee: Permitted Location:

Cerrowire - Wire Coating Facility
1160 West 2150 North 1160 West 2150 North
Ogden, UT 84404 Ogden, UT 84404

SIC Code: 3315: (Steel Wiredrawing & Steel Nails & Spikes)

Status: Not Observed. No evaluation was performed since AO DAQE-672-97 has been revoked. The
source now operates with a Small Source Exemption. See DAQE-GN10958003-24 and
DAQE-EN10958004-24 for more information.

EMISSION INVENTORY:
The emissions listed below are an estimate of the total potential emissions (PTE) from Cerrowire - Wire
Coating Facility on the Approval Order (AO) DAQE-672-97, dated August 4, 1997. PTE are supplied for
supplemental purposes only.

Estimated Criteria Pollutant Potential Emissions

TSP 0.175 tons/yr
PM10 0.175 tons/yr
SO2 0.001 tons/yr
NOx 0.428 tons/yr
CO 0.031 tons/yr
VOC 4.000 tons/yr

PREVIOUS ENFORCEMENT
ACTIONS: A Compliance Advisory was issued February 1, 2023
(DAQC-081-23). The source applied for, and received, a Small
Source Exemption (DAQE-EN1095004-24) and the existing AO
has been revoked (DAQE-GN109580003-24). A No Further
Action Letter was issued March 20, 2024 (DAQC-260-24).

COMPLIANCE STATUS &
RECOMMENDATIONS: In regards to Approval Order (AO) DAQE-672-97, dated August
4, 1997, the overall status is: Not Observed. The AO has been
revoked.

HPV STATUS: Not Applicable.

RECOMMENDATION FOR
NEXT INSPECTION: N/A

NSR RECOMMENDATIONS: None at this time.

ATTACHMENTS: N/A