Blasting Report 8.21.2023

BLAST REPORT 4570 Frye Bridge Rd
Clemmons, NC 27012
MINE INFO
Permittee: Tri County Paving Customer: West Jefferson Blast#: 03-23
Mine ID: 0 Area: Third Level
Date: 8/21/2023 N: 36.405846
Time: 10:44 AM W: -81.482787
WEATHER
Condition: Clear Wind Velocity: 3-7
Temperature: 77°F Wind Direction: NNW
CLOSEST DWELLING/STRUCTURE
N: 36,407111 Location: 300 Mt Jefferson Rd Structure Type: Dwelling
W: -81.482583 Distance: 465 ft Direction: 7° Scaled Distance: 46.5
WEIGHTS
Shot Type: Production Density: 2.300 tons/cyd
Rock Type: Granite Blast Yield: 4408 tons
Weight per Hole 13.50 Ibs Volume: 1916 cyd
Max.Holes/Delay: 2 Max Ibs per Delay 100.00 Ibs
Powder Factor: 2.41 t/lb 0.95 Ib/cyd
HOLE DATA
Total Holes: 70 Drill Diameter: 3.50 in Drill Footage: 1134.00 ft
Number of Rows: 8 Min.Hole Depth: 14.00 ft Max.Hole Depth: 18.00 ft
Burden: 7.0 ft Spacing: 8.0 ft Sub Drill: 3 ft
Min.Stem Ht: 8 ft Max.Stem Ht: loft Inert Deck Ht: Oft
Stemming Size: 1/2 in Stemming Type: Clean Crushed Stone
PRODUCTS
Detonators&Accessories Boosters
Product Quantity Product Quantity Unit Wt(lbs) Total Wt(lbs)
ShockStar 30ft 25/500 61 (AP)Eagle 340 61 0.75 45.75
ShockStar Surface Delay 20ft 17ms 7 (AP)Eagle 340
(AP)Eagle 340
- Bulk/Packaged Product
Product Total Wt(lbs)
Austinite 15 900
Hydromite 2.5x8 880
Initiation Type: Non-Electric Bulk Total: 1780.00 Ibs
Initiation Device: Shotgun Primer Booster Total: 45.75 Ibs
Blasting Mats Used? No Total Explosives: 1825.75 Ibs
CREW/SAFETY 71
Safety Meeting: Yes Blaster in Charge: Alexander Williams
Face Inspection: Yes License#: 0
Protective Cover: Loader Bucket Contact: [e-mail]
Blast Crew: Alexander Williams [phone]
Jonathon Couch Carlos Villenueva
Signature: ' w
Tri County 01-23

BLAST REPORT 4570 Frye Bridge Rd
Clemmons, NC 27012
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SEISMOGRAPH 1
Serial#: 3203 Manufacturer&Model: VCE Dist.&Dir.via GPS
N: 36.40725 Location: 303 Wade E Vannoy Rd Direction: 42'
W: -81.481194 Description: Dwelling Scaled Dist: 69.4
Comments: Operator/Firm: VCE
Transverse: Vertical: Longitudal: Acoustic: Distance:
0.085 in/s 0.110 in/s 0.095 in/s 116.00 dB 694 ft
36.50 Hz 64.00 Hz 32.00 Hz
SEISMOGRAPH 2
Serial#: 2438 Manufacturer&Model: VCE Dist.&Dir.via GPS
N: 36.407111 Location: 300 Mt Jefferson Rd Direction: 7'
W: -81.482583 Description: Dwelling Scaled Dist: 46.5
Comments: - Operator/Firm: VCE
Transverse: Vertical: Longitudal: Acoustic: Distance:
0.160 in/s 0.250 in/s 0.120 in/s 115.00 dB 465 ft
42.60 Hz 46.50 Hz 42.60 Hz
SEISMOGRAPH 3
Serial#: N/A Manufacturer&Model: N/A Dist.&Dir.via GPS
N: N/A Location: N/A Direction: N/A
W: -N/A Description: N/A Scaled Dist: N/A
Comments: No Seismograph Set Up Operator/Firm: N/A
SEISMOGRAPH 4
Serial#: N/A Manufacturer&Model: N/A Dist.&Dir.via GPS
N: N/A Location: N/A Direction: N/A
W: -N/A Description: N/A Scaled Dist: N/A
Comments: No Seismograph Set Up Operator/Firm: N/A
SEISMOGRAPH 5
Serial#: N/A Manufacturer&Model: N/A Dist.&Dir.via GPS
N: N/A Location: N/A Direction: N/A
W: -N/A Description: N/A Scaled Dist: N/A
Comments: No Seismograph Set Up Operator/Firm: N/A
COMMENTS
0
Tri County 01-23

BLAST REPORT 4570 Frye Bridge Rd
1 Clemmons, NC 27012
BILLING
Explosive Delivery: Less than 16,000lbs Low Volume Surcharge: Yes
Toe Holes: 0 Profile/Photogrammetry: 0
Decked Holes: 0 BoreTracking: 0
Unplanned Trips: 0 VOD Analysis: 0
Tri Countv 01-23

BLAST REPORT 4570 Frye Bridge Rd
Clemmons, NC 27012
Unique Hole Parameters
ANFO
Y4 lb Booster===*
Tri Countv 01-23

N Q S File:3203202308211044021.dtb
Number:021
Tri County Paving Date and Time:8/21/2023 10:44:00 AM
303 Wade E. Vanno Dr., West Jefferson, NC SN:3203
pC y Seismic Trigger:0.0500 in/sec
686 ft Air Trigger: 142 dBL
Sample Rate: 1024
Clear, 77 degrees, NNW 3-7 Duration:2 Seconds
WJ C Pre-Trigger:0.5 Second
Seismic Range:2.50 in/s
Acoustic Range: 142 dBL
Gain:2.Ox
Voltage:6.20
Peaks and Frequencies Graph Information
PPV Maximum:0.110 in/sec(0.2178 sec) Duration:-0.500 s To:2.000 s
Acoustic: 116 dBL @ 11.9 Hz(0.5479 sec) Acoustic Scale: 126 dBL
Radial:0.0950 in/sec @ 32.0 Hz(0,1924 sec) Seismic Scale:0.200 in/sec(0.0500 in/sec/div)
Vertical:0.110 in/sec @ 64.0 Hz(0.2178 sec) Time Intervals:0.50 sec
Transverse:0.0850 in/sec @ 36.5 Hz(0.2080 sec)
Last Calibration Date: 1/16/2023
Cal 1.02 OK
...............................................................................................................................................................................................................................................................................................................
Cal 0.515 OK
.......................................................................................................................................................................................................-.................................._.............................................................
Cal 0.515 OK
........................................................................................................................................................................................................................................................................................
Cal 0.505 OK
T
-0.50 0.00 0.50 1.00 1.50 2.00
Fast Fourier Transform-Amplitude Spectrum
FFT Peak Frequencies FFT Graph Information
Acoustic: 1.75 Hz(Amp=38.03) Range: 1 to 100 Hz
Radial:26.75 Hz(Amp= 11.49) Acoustic Scale:38.03
Vertical:26.25 Hz(Amp=5.88) Seismic Scale: 11.49
Transverse:26.75 Hz(Amp=8.08)
Acoustic Hadia e Vertical(vel) ransverse e
1.75 Hz(38.0 26.75 Hz(11.5) 26.25 Hz(5.88) 26.75 Hz(8.06)
It
1 10 100 1 10 100 'I 10 100 1 10 100
Frequency(Hz)
White Seismograph Data Analysis V11 -Version 11.1.0.104

NQS File:2438202308211044035.dtb
Number:035
TO County Paving Inc Date and Time:8/21/2023 10:44:00 AM
300 Mount Jefferson Rd., West Jefferson, NC SN:2438
Seismic Trigger:0:0500 in/sec
414 ft Air Trigger: 142 dBL
1024
Clear, 77 degrees NNW 3-7 Samon:2Sple e:onds
� Duration:2 Seconds
wic Pre-Trigger:0.5 Second
Seismic Range:2.50 in/s
Acoustic Range:142 dBL
Gain:2.Ox
Voltage:6.30
Peaks and Frequencies Graph Information
PPV Maximum:0.250 in/sec(0.2627 sec) Duration:-0.500 s To:2.000 s
Acoustic:116 dBL @ 11.9 Hz(0.4570 sec) Acoustic Scale: 126 dBL
Radial;0.120 in/sec @ 42.6 Hz(0.3350 sec) Seismic Scale:0.400 in/sec(0.100 in/sec/div)
Vertical:0.250 in/sec @ 46.5 Hz(0.2627 sec) Time Intervals;0.50 sec
Transverse:0.160 in/sec @ 42.6 Hz(0.2744 sec)
Last Calibration Date:4/6/2023
Cal 0.96 OK
..................................................................................................................................._.,...................,.................,...........,......,......................._................................................
Cal 0.485 OK
.........................................................................................................................................................._....................................................................,...,._......................................................
.:..
Cal 0.500 OK
.....................................................................................................................................................................................................................,.............................................................
.,.................
Cal 0.515 OK
T
0.50 0.00 0.50 1.00 1.50 2.00
Fast Fourier Transform-Amplitude Spectrum
FFT Peak Frequencies FFT Graph Information
Acoustic: 1.75 Hz(Amp=32.71) Range: 1 to 100 Hz
Radial:48.75 Hz(Amp=9.10) Acoustic Scale:32.71
Vertical:38.25 Hz(Amp= 19.32) Seismic Scale; 19.32
Transverse:41.50 Hz(Amp=17,13)
cous is Hadia e Vertical(vel) ransverse e
1.75 Flz(32.7) 48.75 Hz(9.10) 38.25 Hz(19.3) 41.50 Hz(17.1
L I
L� Lj
1 10 100 1 10 100 1 10 100 1 10 100
Frequency(Hz)
White Seismograph Data Analysis V11-Version 11.1.0.104