DAQ-2025-000877

1
DAQC-161-25
Site ID 10313 (B5)

MEMORANDUM

TO: FILE – GRAYMONT WESTERN US INC.

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: February 10, 2025

SUBJECT: Graymont Western US Inc. (Graymont), Major, NSPS, Title V, Millard County,
FRS # UT0000004902700005

INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: February 10, 2025

SOURCE LOCATION: Cricket Mountain/Millard County

SOURCE CONTACT: Eric Bennett, [phone]

APPLICABLE
REGULATIONS: Title V Operating Permit
Permit Number: 2700005004
Date of Permit: September 13, 2021
Date of Last Revision: April 1, 2024

SOURCE REVIEW EVALUATION:

Fourth Quarter 2024
% Monitor Availability (MA)
Performance Test
Dates
(N/A to Opacity)
Summary of Excess Emissions During
Point Source Operation
Point
Source
Op.
hrs. Channel MA CGA Lin RATA Point
Source Channel Hrs. Limitation
Kiln 1 1296 Opacity 98% Kiln 1 Opacity 0.00 15 % - 6 min
Kiln 2 1135 Opacity 98% Kiln 2 Opacity 0.00 15 % - 6 min
Kiln 3 252 Opacity 99% Kiln 3 Opacity 0.00 15 % - 6 min
Kiln 4 0 Opacity Point source
not operated Kiln 4 Opacity 0.00 15 % - 6 min
Kiln 5 2144 Opacity 99% Kiln 5 Opacity 0.00 15 % - 6 min

1 8 2

2
Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
Kiln 1 Opacity 0 0 0 0 0 15 % - 6 min
Kiln 2 Opacity 0 0 0 0 0 15 % - 6 min
Kiln 3 Opacity 0 0 0 0 0 15 % - 6 min
Kiln 4 Opacity 0 0 0 0 0 15 % - 6 min
Kiln 5 Opacity 0 0 0 0 0 15 % - 6 min

CMS Performance Summary - Hourly Summary
Point
Source Channel Monitor
Malfunction
Non-monitor
Malfunction
QA
Calibrations
Other
Known
Causes
Unknown
Causes
Kiln 1 Opacity 2 0 10 17 0
Kiln 2 Opacity 10 0 10 0 0
Kiln 3 Opacity 0 0 2 0 0
Kiln 4 Opacity 0 0 0 0 0
Kiln 5 Opacity 0 0 20 1 0

Type Code 280 (COMS Attenuator Filters) Procedure 3
Point Source
& Location
Attenuator
I.D.
Attenuator
Certification
Date
Certified
Attenuator
Opacity
OPLR,
SECR,
or
PLCF,
Corrected
Opacity
Value
Range
Low,
Mid, &
High
Certification
1-year or 5-
year
Kiln 1 - Stack ZO60 6/19/24 8.50 1.00 8.5 Low 1 year
Kiln 1 - Stack ZY95 6/19/24 15.60 1.00 15.6 Mid 1 year
Kiln 1 - Stack YZ96 6/19/24 43.60 1.00 43.6 High 1 year
Kiln 2 - Stack ZO60 6/19/24 8.50 1.00 8.5 Low 1 year
Kiln 2 - Stack ZY95 6/19/24 15.60 1.00 15.6 Mid 1 year
Kiln 2 - Stack YZ96 6/19/24 43.60 1.00 43.6 High 1 year
Kiln 3 - Stack ZO60 6/19/24 8.50 1.00 8.5 Low 1 year
Kiln 3 - Stack ZY95 6/19/24 15.60 1.00 15.6 Mid 1 year
Kiln 3 - Stack YZ96 6/19/24 43.60 1.00 43.6 High 1 year
Kiln 4 - Stack ZO60 6/19/24 8.50 0.89 7.6 Low 1 year
Kiln 4 - Stack ZY95 6/19/24 15.60 0.89 14 Mid 1 year
Kiln 4 - Stack YZ96 6/19/24 43.60 0.89 39.9 High 1 year
Kiln 5 - Stack ZO60 6/19/24 8.50 1.00 8.5 Low 1 year
Kiln 5 - Stack ZY95 6/19/24 15.60 1.00 15.6 Mid 1 year
Kiln 5 - Stack YZ96 6/19/24 43.60 1.00 43.6 High 1 year

3
Type Code 281 (Procedure 3 - COMS Filter Audit Calibration Error)
Point
Source Location Audit Date
Opacity Monitor Response
(Average of 5) Mean Difference Calibration
Error (≤ 3%) Low Mid High
Kiln 1 Stack 12/4/24 9 0.140 0.188
Kiln 1 Stack 12/4/24 16 0.140 0.210
Kiln 1 Stack 12/4/24 44 0.260 0.294
Kiln 2 Stack 11/14/24 9 0.220 0.259
Kiln 2 Stack 11/14/24 16 0.340 0.403
Kiln 2 Stack 11/14/24 44 0.240 0.273
Kiln 3 Stack 12/12/24 8 -0.170 0.303
Kiln 3 Stack 12/12/24 16 0.020 0.209
Kiln 3 Stack 12/12/24 43 -0.250 0.332
Kiln 4 Stack 12/17/24 8 0.120 0.249
Kiln 4 Stack 12/17/24 14 0.300 0.326
Kiln 4 Stack 12/17/24 40 0.030 0.094
Kiln 5 Stack 12/9/24 8 -0.380 0.420
Kiln 5 Stack 12/9/24 16 0.060 0.082
Kiln 5 Stack 12/9/24 44 -0.020 0.048

Type Code 282 (Annual Zero Alignment Audit) Procedure 3
Point
Source Location Audit
Date
Alternative
Zero
Alignment
(Yes or No)
COM Clear
Condition
Zero
Response
(CCZR)
COM
Simulated
Zero
Response
(CSZR)
Zero
Alignment
Error
Difference
(CCZR)-
(CSZR)
Adjustment to
COM
Simulated
Zero Response
(CSZR)
(Yes or No)
Kiln 1 Stack 12/4/24 Yes 0.15 -0.09 0 No
Kiln 2 Stack 11/14/24 Yes 0.09 0 0 No
Kiln 3 Stack 12/12/24 Yes 0.04 0 0 No
Kiln 4 Stack 12/17/24 Yes 0.06 -0.1 0 No
Kiln 5 Stack 12/9/24 Yes 0.07 -0.5 1 No

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
0 Hours 73 Hours 0 Hours 0 Events

4
SOURCE INSPECTION
SUMMARY EVALUATION: Graymont is maintaining its COMS as required in R307-170 and 40 CFR
60.13.

CURRENT
RECOMMENDATIONS: All deviations appear to be a result of breakdown or process related
problems that do not warrant issuing a violation. Periods of excess
emissions that were recorded by the CMS in service on each point source
during this reporting period are summarized in the SEDR and described
in Pivot Table 400 “Excess Emissions Review.”

Graymont was in compliance during this reporting period. No further
enforcement actions should be taken.

Graymont’s NSPS monitoring system meets the performance standards
of 40 CFR 60, Appendix B Performance Specification 1.

HPV: No

RECOMMENDATION
FOR NEXT INSPECTION: Check DAS for daily zero and span drift.

Check the QC program to ensure that monitor drift is being tracked and
that the source can identify excessive drift.

ATTACHMENT: Excel spreadsheet review
Graymont EER 4Q2024
Point Source Information Late Expired Cal. Gas Valid Cal. Gas Days Yes No
1 Type Code 100
(Company Information)Type Code Company Manager Company Name AIRS # Phone Number
Environmental
Contact
1 100 Blake Bills 02700005 435-864-5770 Eric Bennett
1 100 0 0 0 0
1 Type Code 110
(Point Source Identification)Type Code Point Source
Quarter
1 - 4 Year
Point Source
Operating Hrs. in
Quarter
1 110 4 2024 1296
1 110 4 2024 1135
1 110 4 2024 252.5
1 110 4 2024 0
1 110 4 2024 2144
1 110 0 0 0
1 Type Code 200
(Monitor Identification)Type Code Point Source Channel Manufacturer Model No. Monitor SN Low Span High Span Installation Date
Monitor
Location
1 200 Opacity Teledyne Monitor Labs Lighthawk 560 5601662 0 100 9/30/2008 Kiln 1 stack
1 200 Opacity Teledyne Monitor Labs Lighthawk 560 5600904 0 100 10/13/2005 Kiln 2 stack
1 200 Opacity Teledyne Monitor Labs Lighthawk 560 5600905 0 100 10/13/2005 Kiln 3 stack
1 200 Opacity Teledyne Monitor Labs Lighthawk 560 5600906 0 100 11/8/2005 Kiln 4 stack
1 200 Opacity Teledyne Monitor Labs Lighthawk 560 5602280 0 100 11/29/2011 Kiln 5 stack
1 200 0 0 0 0 0 0 1/0/1900 0
1 Type Code310
(Excess Emissions)
SUMMARY REPORT
Type Code Channel
Total Hours of Excess
Emissions
Excess Emissions -
% of Total
Operating Hours
RC 701 Hours -
start
up/Shutdown
RC 702 Hours-
Control Equipment
Problems
RC 703 Hours -
Process Problems
RC 704, 706, 707
Hours -Other Known
Causes
RC 705 Hours -
Unknown
Causes
Emission
Limitation
Emission
Limitation
Units
Emission
Limitation
Averaging
Period
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 15 % 6 min
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 15 % 6 min
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 15 % 6 min
1 Point source not operated 310 Opacity 0 0.00% 0 0 0 0 0 15 % 6 min
1 TRUE 310 Opacity 0 0.00% 0 0 0 0 0 15 % 6 min
1 310 0 0 0 0 0 0 0 0 0
1 Type Code 300 (CMS
Performance Summary) Type Code Channel
Point Source Operating
Hours
Downtime - % of
Total Operating
Hours
Total CMS
Downtime
RC 721 Hours -
Monitor
Malfunction
RC 722 Hours -
Non-monitor
Malfunction
RC 723 Hours -
QA Calibrations
RC 724 Hours -
Other Known
Causes
RC 725
Hours -
Unknown
Causes
1 TRUE 300 Opacity 1296 2.31% 30 2.4 0 10.4 17.2 0
1 TRUE 300 Opacity 1135 1.79% 20.26 9.58 0 10.48 0.2 0
1 TRUE 300 Opacity 252.5 0.87% 2.2 0 0 2.2 0 0
1 Point source not operated 300 Opacity 0 0.00% 0 0 0 0 0 0
1 TRUE 300 Opacity 2144 0.96% 20.51 0 0 19.83 0.68 0
1 300 0 0 0 0 0 0
1
Type Code 250
(Performance Specification
RATA Results)
Type Code Channel
Date of Most Current
RATA
Date of Preceding
RATA
Months Between
RATA's
Units of
Measurement CEM Value Reference Method
Value
Relative
accuracy Pass/ Fail
1 0 Days 250 0 01/00/00 01/00/00 0 0 0 0 0.00% 0
1 Type Code 260
(CGA Results)Type Code Channel Date Audit Point No. Cylinder ID
Cylinder
Expiration Date
Type of
Certification
Units of
Measurement CEM Value Cylinder
Value
Precision
%Pass/ Fail Range - High or
Low
1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1 Type Code 270
(Linearity Test Results)Type Code Channel Date Audit Point No. Cylinder ID
Cylinder
Expiration Date
Type of
Certification
Units of
Measurement CEM Value Cylinder
Value
Precision
%Pass/ Fail Range - High or
Low
1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code Channel Start Date Start Time End Date End Time Hours
1 0 0 0 1/0/00 0:00 1/0/00 0:00
1
1 None Reported
1 0 TC 220 Hours 72.98 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 72.97 TC 300 Hours 0.01 FALSE
None Reported None Reported None Reported None Reported None Reported None Reported
Point Source
Point Source
Point Source
Point Source
Point Source
Point Source
Yes
Kiln 1
Kiln 2
Kiln 3
Kiln 4
Kiln 5
0
0
Kiln 3
Kiln 4
Kiln 5
Kiln 4
Kiln 5
0
Kiln 1
Kiln 2
Kiln 3
Type Code 550
(Changes in Operation in
Control Equipment When
CEM Data Not Available)
Type Code 500
(Boiler Operating Days
w/o 18 Hours of Data)
Graymont
0
Type Code 450
(Data Excluded)
Kiln 1
Kiln 2
Kiln 3
Kiln 4
Kiln 5
0
0
Kiln 1
Kiln 2
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code 220
(Monitor Outage
During Point Source Operation)
Type Code 230
(Manual Sample - Alternate
Sampling During Monitor
Outage)
Type Code 240
(CEM Modifications)
Type Code 530
(Excess Emissions During
Emergency Conditions)
0
0
0
Graymont EER 4Q2024
*
Type Code 280 (COMS Attenuator Filters) Procedure 3
Point Source Location
Attenuator
I.D.
Attenuator
Certification Date
Certified Attenuator
Opacity
OPLR,
SECR, or
PLCF,
Corrected Opacity
Value
Range
Low, Mid, & High
Certification
1-year or 5-year
Kiln 1 Stack ZO60 6/19/24 9 1 8.5 Low 1 year
Kiln 1 Stack ZY95 6/19/24 16 1 15.6 Mid 1 year
Kiln 1 Stack YZ96 6/19/24 44 1 43.6 High 1 year
Kiln 2 Stack ZO60 6/19/24 8.5 1 8.5 Low 1 year
Kiln 2 Stack ZY95 6/19/24 15.6 1 15.6 Mid 1 year
Kiln 2 Stack YZ96 6/19/24 43.6 1 43.6 High 1 year
Kiln 3 Stack ZO60 6/19/24 8.5 1 8.5 Low 1 year
Kiln 3 Stack ZY95 6/19/24 15.6 1 15.6 Mid 1 year
Kiln 3 Stack YZ96 6/19/24 43.6 1 43.6 High 1 year
Kiln 4 Stack ZO60 6/19/24 8.5 0.89 7.6 Low 1 year
Kiln 4 Stack ZY95 6/19/24 15.6 0.89 14 Mid 1 year
Kiln 4 Stack YZ96 6/19/24 43.6 0.89 39.9 High 1 year
Kiln 5 Stack ZO60 6/19/24 8.5 1 8.5 Low 1 year
Kiln 5 Stack ZY95 6/19/24 15.6 1 15.6 Mid 1 year
Kiln 5 Stack YZ96 6/19/24 43.6 1 43.6 High 1 year
*
Opacity Monitor Response (Average of 5)
Low Range Mid Range High Range
Kiln 1 Stack 12/4/24 9 0.140 0.042 0.052 0.188
Kiln 1 Stack 12/4/24 16 0.140 0.053 0.066 0.210
Kiln 1 Stack 12/4/24 44 0.260 0.026 0.032 0.294
Kiln 2 Stack 11/14/24 9 0.220 0.033 0.041 0.259
Kiln 2 Stack 11/14/24 16 0.340 0.047 0.059 0.403
Kiln 2 Stack 11/14/24 44 0.240 0.023 0.029 0.273
Kiln 3 Stack 12/12/24 8 -0.170 0.110 0.137 0.303
Kiln 3 Stack 12/12/24 16 0.020 0.155 0.193 0.209
Kiln 3 Stack 12/12/24 43 -0.250 0.066 0.082 0.332
Kiln 4 Stack 12/17/24 8 0.120 0.107 0.133 0.249
Kiln 4 Stack 12/17/24 14 0.300 0.021 0.026 0.326
Kiln 4 Stack 12/17/24 40 0.030 0.049 0.061 0.094
Kiln 5 Stack 12/9/24 8 -0.380 0.029 0.036 0.420
Kiln 5 Stack 12/9/24 16 0.060 0.021 0.026 0.082
Kiln 5 Stack 12/9/24 44 -0.020 0.019 0.024 0.048
*
Point Source Location Audit Date
Alternitive Zero
Alignment
(Yes or No)
COM Clear
Condition Zero
Response
(CCZR)
COM Simulated
Zero Response
(CSZR)
Zero Alignment
Error Difference
(CCZR)-(CSZR)
Adjustment to COM
Simulated Zero
Response
(CSZR)
(Yes or No)
Kiln 1 Stack 12/4/24 Yes 0.150 -0.090 0.240 No
Kiln 2 Stack 11/14/24 Yes 0.090 0.000 0.090 No
Kiln 3 Stack 12/12/24 Yes 0.040 0.000 0.040 No
Kiln 4 Stack 12/17/24 Yes 0.060 -0.100 0.160 No
Kiln 5 Stack 12/9/24 Yes 0.070 -0.500 0.570 No
Type Code 282 (Procedure 3 - Annual Zero Alignment Audit)
Point
Source Location Audit Date Mean Difference Standard Deviation
Confidence
Coefficient
Calibration
Error (≤ 3%)
Type Code 281 (Procedure 3 - COMS Filter Audit Calibration Error)
Graymont EER 4Q2024
Monitoring Information TC 210, 230, & 240
Type Code 210
(Pollutant Concentration Exceeded Span of CEM) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 230
(Manual Sample - Alternate Sampling During Monitor Outage) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 240
(CEM Modifications) - 100 (All)
*
Count of Channel Column Labels
Row Labels (blank) Grand Total
(blank)
(blank)
Grand Total
Graymont EER 4Q2024
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels 723 721 724 Grand Total
Kiln 1
Opacity
Automatic daily zero and span calibration check.10.40 10.40
Power supply, controller, light source or air purge equipment
malfunction. Zero voltage out of range fault. Cleaned monitor,
performed sets, returned to normal operation. Cal mechanism motor
change caused the zero and upscale to not be aligned properly, causing
results of cal to be over 4%. Aligned the zero and upscale, and performed
sets to restore monitor back to proper operating status.
2.40 2.40
Cleaning / Maintenance of monitor. Clear stack procedure performed-
returned to stack and put back in operation.17.20 17.20
Kiln 2
Opacity
Automatic daily zero and span calibration check.9.00 9.00
Power supply, controller, light source or air purge equipment
malfunction. Zero voltage out of range fault. Cleaned monitor,
performed sets, returned to normal operation. Cal mechanism motor
change caused the zero and upscale to not be aligned properly, causing
results of cal to be over 4%. Aligned the zero and upscale, and performed
sets to restore monitor back to proper operating status.
9.58 9.58
Excessive dust accumulation on lens and/or in stack ports resulting from
improper air purge. Lens and stack ports cleaned and air purge system
maintenance performed.
0.20 0.20
Audit and/or cleaning of monitor. Returned to normal operation as soon
as audit was over.1.48 1.48
Kiln 3
Opacity
Automatic daily zero and span calibration check.2.20 2.20
Kiln 5
Opacity
Automatic daily zero and span calibration check.19.83 19.83
Cleaning / Maintenance of monitor. Clear stack procedure performed-
returned to stack and put back in operation.0.68 0.68
Grand Total 42.92 11.98 18.08 72.98
Graymont EER 4Q2024
Opy *
Opy Count of Magnitude of Emissions Column Labels
Opy Row Labels Grand Total
Opy Grand Total
Dat Ex *
Dat Ex Type Code 450
(Data Excluded) - 6000 (All)
Dat Ex *
Dat Ex Count of Channel Column Labels
Dat Ex Row Labels Grand Total
Dat Ex Grand Total
Graymont EER 4Q2024
Type Code 500
Before February 28, 2005 (Boiler Operating Days w/o 18 Hours of
Data) After February 28, 2005 (90% Operating Hours For each 30 BOD)
- 500
(All)
*
Count of Channel Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 510
(F-factor, Equations & Conversion Factors) - 500 (All)
Count of F-factor Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 520
(Minimum Data Not
Obtained <22/30 BODs) - 500
(All)
Count of Channel Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 530
(Excess Emissions During Emergency Conditions) - 500 (All)
Count of Date Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 540
(Fuel Pre-treatment Credit SO2) - 500 (All)
Count of Date Column Labels
Row Labels Grand Total
Grand Total
*
TypeCode 550
(Changes in Operation in Control Equipment When CEM Data Not
Available) - 500
(All)
Column Labels
Row Labels Grand Total
Grand Total