Ministry of Transportation and Infrastructure Geotechnical and Materials Engineering

Southern Interior Region 231-447 Columbia Street Kamloops, BC, V2C 2T3 Telephone: (250) 371-3789 Fax: (250) 828-4083

Boundary West Pit No. 0701

2018 Technical Information Report

Location: The pit is located approximately 60km east of Highway 97/24 intersection and/or 37km west of the Hwy 5/24 intersection, directly off of Highway 24 on the south side.

Legal Description: Ministry of Transportation and Infrastructure Section 16 Map Reserve on that

part of a portion District Lot 1861, south of Highway 24 and Unsurveyed Crown land south of District Lot 1801, Lillooet District. UTM coordinates for the pit are Grid Zone 10, 5,706,500 Northing, and 668,000 Easting.

Gradation: The average and range of laboratory samples as well as oversize rock field estimates for material from the 2014 (TP 14-01 to 05) testing program at Boundary West are as follows:

Boundary West No. 0701 2018 Technical Information Report

2 January 2018

Laboratory Samples

Classification Average (%) Range (%) Gravel (4.75-75mm) 57.6 50.6 – 61.6 Sand (0.075-4.75mm) 38.1 34.9 – 44.1 Fines (<0.075mm) 4.3 3.5 – 5.3 Oversize Field Estimates

Classification Average (%) Range (%) Boulders (>375mm) 1 0 - 5 Cobbles (150-375mm) 6.8 5 – 10 Cobbles (75-150mm) 9 5 – 10 Maximum rock size observed was 380 mm. The average and range of laboratory samples as well as oversize rock field estimates for material from the 1986 testing program at Boundary West are as follows: Laboratory Samples

Classification:

Average (%) Range (%)

Gravel (4.75-75mm) 50.8 41 - 58 Sand (0.075-4.75mm) 43.3 38 - 52 Fines (<0.075mm) 5.8 4 - 9 Oversize Field Estimates

Classification:

Average (%) Range (%)

Boulders (>375mm) 0 0 – 1 Cobbles (150-375mm) 5.8 0 – 20 Cobbles (75-150mm) 11.6 0 – 25 Maximum rock size observed was 600 mm. Wet Sieve Analysis Chart: 2014

PROJECT REPORT OFSIEVE ANALYSIS SUMMARIES PERCENT PASSING

Project: Boundary West Project No.:Sample Source: Test Pits Client: MoTIMaterial: PIT RUN Date: May-June 10 2014

Sample Information Percent PassingTest Pit Depth Bag # Pit Run Sieve Sizes (mm)

(m) 75 50 37.5 25 19 12.5 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.07514-01 0-3.5 299 100.0 92.9 87.3 80.5 74.5 66.4 61.7 49.4 37.7 26.6 16.4 9.1 6.4 5.314-02 0.3-4.0 481 100.0 97.1 93.6 81.7 74.8 64.5 57.5 40.4 28.2 18.4 11.4 7.4 5.5 4.314-03 0.3-4.0 298 100.0 86.5 78.6 70.1 64.2 56.9 52.1 38.4 26.5 16.0 8.8 5.6 4.3 3.514-05 0.3-4.0 288 100.0 88.4 81.2 71.5 65.2 56.3 53.0 41.3 29.9 20.0 12.3 7.5 5.4 4.2

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3 January 2018

1986

Aggregate Gradation Chart: 2014

PROJECT REPORT OFSIEVE ANALYSIS SUMMARIES PERCENT PASSING

Project: Gravel Management Project No.: 28560Sample Source: Boundary West Client: MoTMaterial: Pit Run Date: 1986

Sample Information Percent PassingTest Pit Depth Bag # Pit Run Sieve Sizes (mm)

(m) 75 37.5 19 9.5 4.75 2.36 1.18 0.6 0.3 0.075TP08-1 0-4.0 250 100.0 87.2 80.6 75.2 71.8 69.2 59.8 35.1 7.6 0.5TP08-2 0-4.0 249 100.0 87.1 68.9 56.9 45.3 37.1 26.7 10.3 2.4 1.2TP08-3 0-4.0 248 100.0 95.4 87.1 81.0 73.9 66.5 56.5 36.0 12.6 4.0TP08-4 0-4.0 247 100.0 89.3 79.0 69.5 64.3 60.4 51.7 26.4 8.0 4.0TP08-5 0-4.0 246 100.0 89.9 81.4 70.8 64.3 58.4 49.0 25.6 4.6 1.4TP08-6 0-4.0 245 100.0 91.4 84.1 76.3 69.6 62.5 53.4 36.7 11.2 2.1TP08-7 0-4.0 244 100.0 96.6 85.3 74.8 66.1 57.3 45.6 28.8 11.3 2.3TP08-8 0-4.0 243 100.0 82.6 74.7 67.6 63.1 59.1 52.9 37.3 12.5 1.9TP08-9 0-3.0 242 100.0 85.8 73.4 58.9 49.6 39.6 27.4 12.9 4.7 1.3

TP08-11 0-3.0 241 100.0 85.4 75.7 62.7 53.3 43.2 28.5 9.5 2.2 1.1TP08-12 0-3.0 211 100.0 74.2 51.3 39.8 32.6 26.4 17.5 8.9 4.7 3.1

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4 January 2018

1986

0.010.020.030.040.050.060.070.080.090.0

100.0

0.01 0.1 1 10 100

% Passing

Grain Size (mm)

TP08-5 0-4.0 246TP08-6 0-4.0 245TP08-7 0-4.0 244TP08-8 0-4.0 243

0.075 0.3 0.6 1.18 2.36 4.75 9.5 19 37.5 75 0.15 25

Boundary West No. 0701 2018 Technical Information Report

5 January 2018

Summary of Test Pit Logs (with results bolded in the chart): 2014

Boundary West No. 0701 2018 Technical Information Report

6 January 2018

1986

Aggregate Quality: A historical summary of aggregate quality tests performed on pit run samples from the tested area are as follows:

TP or

Year

Micro-Deval (%)

(C1/C2/F)

Degradation (%)

Sand Equivalent

(%)

MgSO4 (%)

(C/F)

Clay Lumps & Friable Particles (C/F)

TP14-03 10.4/18.8 63 TP07-2 &

5 14.8/14.0/14.4 7.0/19.5 4.5/6.6

TP86-3 54.4/51.7 50.9 TP86-7 28.3/22.2 62.7

*Please note that the 2007 test pits are no longer valid and their results listed here are for historical information purposes only.

Boundary West No. 0701 2018 Technical Information Report

7 January 2018

Granular Volume: Estimated Volume: 82,000 m3

• The estimated volume has been determined by multiplying the surface area of the suggested suitability boundary by an average depth of 3.5 metres.

Pit Development and Recommendations: • The mining area has been previously developed by the Ministry of Transportation and

Infrastructure (MoTI). Any additional development will be the responsibility of the contractor and shall be completed as per the pit development plan or as directed by the Ministry Representative.

• The crusher is recommended to be located as identified on the pit floor in front of the

developed southeastern face, with mining proceeding in a south and/or easterly direction on the developed bench as indicated in the pit development plan.

• Processed aggregate may be stockpiled in the northwest end of the pit, as indicated on the pit

development plan, where space permits. • At the completion of mining, active pit faces shall be sloped to a minimum of 1 ½:1 with pit

run granular material.

• All reject materials resulting from aggregate production are to be placed in separate stockpiles free from deleterious material and in an easily accessible location. No stockpiling against the pit face is permitted without the permission from the Aggregate Resource Manager.

Site Photographs:

Boundary West No. 0701 2018 Technical Information Report

8 January 2018

TP 14-01, Spoil. June 2014.

TP 14-03, spoil. June 2014.

Boundary West No. 0701 2018 Technical Information Report

9 January 2018

TP 14-04, spoil. June 2014.

View looking southeast of crush location and pit face from access road, January 2018.

Boundary West No. 0701 2018 Technical Information Report

10 January 2018

View looking northwest from crusher set up location to potential stockpile location, access road to the

right, January 2018.

Samantha Kinniburgh Senior Aggregate Resource Specialist