Larch Hills Pit No. 0414 · 15-04 13.4/9.2 70 Average 11.1/10. 4 61.0 61.1 N/A N/A N/A . Granular Volume: Estimated Volume: 100,000 m. 3. The estimated volume has been calculated

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

Larch Hills Pit No. 0414

2019 Technical Information Report Location: The pit is located approximately 5.8 km northeast of Canoe via the Trans-

Canada Highway, then approximately 1.3 km southwest via the Co-op logging road.

Legal Description: Ministry of Transportation and Infrastructure Section 16 Map

Reserve, legally described as all that Unsurveyed Crown Land in the vicinity of District Lot 2116, Kamloops Division of Yale District and containing 81.3 hectares, more or less. UTM coordinates for the pit are Grid Zone 11, 347,000 Easting, 5,627,500 Northing.

Gradation: The average and range of laboratory samples as well as oversize

rock field estimates for material from the 2015 testing program are as follows:

Larch Hills Pit No. 0414 2019 Technical Information Report ===============================================================

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Laboratory Samples

Classification:

Average (%) Range (%)

Gravel (4.75-75mm) 48.6 37.5 – 60.1 Sand (0.075-4.75mm) 47.4 36.1 – 60.2 Fines (<0.075mm) 4.0 1.9 – 5.1

Oversize Field Estimates

Classification:

Average (%) Range (%)

Boulders (>375mm) 0.4 0 – <1 Cobbles (150-375mm) 1.4 0 – 5 Cobbles (75-150mm) 4.6 0 – 10

The maximum size rock observed was 900 mm.

Wet Sieve Analysis: 2015

1987

PROJECT REPORT OFSIEVE ANALYSIS SUMMARIES PERCENT PASSING

Project: Larch Hills Pit Project No.: 0Sample Source: Test Pits Client: Sitkum ConsultingMaterial: PIT RUN Date: 2015-11-26

75 63 50 37.5 25 19 12.5 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.07515-01 0-3.0 263 100.0 100.0 91.8 82.5 72.4 64.5 57.3 51.9 40.3 32.0 25.6 19.4 12.7 7.3 4.215-01 3.0-5.0 371 100.0 100.0 98.6 96.5 88.8 82.7 78.8 73.6 62.5 53.3 44.6 33.5 18.9 7.6 3.715-02 0-5.0 463 100.0 95.7 92.2 83.8 71.4 63.4 57.4 52.6 43.5 36.3 29.8 23.2 15.8 9.3 5.115-03 0-5.0 324 100.0 100.0 98.7 92.4 87.2 82.7 76.4 72.9 65.3 57.8 49.9 39.3 24.6 11.3 5.115-04 0-5.0 489 100.0 100.0 80.4 73.8 63.1 57.4 50.7 47.2 39.9 33.8 27.6 20.2 11.1 4.4 1.915-05 0-5.0 247 100.0 100.0 100.0 96.2 89.1 81.5 73.6 66.2 47.9 36.0 27.2 17.9 6.3 1.9 1.0

120.0 119.1 112.3 105.0 94.4 86.4 78.8 72.9 59.9 49.8 40.9 30.7 17.9 8.4 4.2

Percent PassingPit Run Sieve Sizes (mm)

Average

Sample Information

Test Pit Depth Bag #

PROJECT REPORT OFSIEVE ANALYSIS SUMMARIES PERCENT PASSING

Project: Larch Hills Pit Project No.: 0Sample Source: Larch Hills Pit Client: 0Material: PIT RUN Date:

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

(m) 75 63 50 37.5 25 19 12.5 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.07587-1 0.1-4.5 100.0 96.0 94.0 90.0 87.0 84.0 84.0 76.0 68.0 62.0 55.0 44.0 27.0 9.0 2.887-4 0-4.1 100.0 100.0 99.0 93.0 89.0 85.0 85.0 72.0 58.0 49.0 38.0 26.0 13.0 5.0 2.887-5 0-4.3 100.0 100.0 98.0 93.0 86.0 80.0 80.0 68.0 58.0 52.0 44.0 32.0 15.0 4.0 1.087-7 3.5-4.6 100.0 100.0 95.0 93.0 90.0 84.0 75.0 70.0 60.0 55.0 49.0 42.0 32.0 18.0 8.087-8 0-4.6 100.0 100.0 99.0 96.0 89.0 79.0 67.0 59.0 46.0 40.0 34.0 26.0 18.0 11.0 6.087-9 0.5-4.6 100.0 100.0 94.0 91.0 86.0 82.0 82.0 72.0 63.0 57.0 49.0 39.0 21.0 7.0 2.9

87-10 0.1-4.6 100.0 100.0 94.0 90.0 85.0 81.0 81.0 71.0 60.0 53.0 44.0 34.0 18.0 5.0 1.887-15 0-4.5 100.0 100.0 97.0 92.0 88.0 84.0 84.0 70.0 58.0 52.0 44.0 33.0 18.0 6.0 1.9


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Aggregate Gradation Charts: 2015


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1987


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Summary of Test Pit Logs (including Laboratory Results – bolded in red) are located below: 2015

1987

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PROJECT: Larch Hills Pit SAMPLED BY: HSPIT #: 414 METHOD: Backhoe

DISTRICT: Okanagan Shuswap DATE: Oct 27 to 29, 1987

TH / TP SAMPLESOILS CLASS

SAND TYPE

REMARKS

FROM TO BAG No. G S F MAX SIZE

75mm 150mm

150mm 375mm >375mm F M C LAB RESULTS

87-1 0.0 0.1 TS Bouldery-roots0.1 4.5 SP 23 75 2 150 2 0 0 F SP 31/66/3

87-4 0.0 4.1 SP 30 67 3 250 2 1 0 M F SP 41/56/3

87-5 0.0 4.3 SP 40 58 2 300 15 5 0 F SP 42/57/1

87-6 0.0 4.5 SP 40 57 3 250 5 2 0 M Falternating layers of

bouldery SP and finer SP

87-7 0.0 3.5 SP-SM 38 54 6 450 30 15 5 Fbouldery

GP-GM 47/45/8

3.5 4.6 SP 41 51 8 50 0 0 0 Fsilt balls?

SP-SM 41/51/8

87-8 0.0 4.6 SP-SM 40 54 6 300 15 5 0 F GP-GM 54/40/6

87-9 0.0 0.5 TS0.5 4.6 SP 25 73 2 250 5 1 0 F SP 37/60/3

87-10 0.0 0.1 TS0.1 4.6 SP 20 78 2 200 4 1 0 F SP 40/58/2

87-15 0.0 4.5 SP 40 56 4 200 8 2 0 M Fsome light silt coatings

SP 42/56/2

AGGREGATE LOG

DEPTHESTIMATED GRADATION

ESTIMATED ROCK 75mm


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Aggregate Quality: A summary of aggregate quality tests performed on pit run samples

from the tested area (as well as historical results) are as follows:

TP Micro-Deval C/F (%)

Deg (%) SE (%)

Bulk Relative Density

C/F

Absorption (%) C/F

MgSO4

(%) C/F

87-4 62.3 77.5 87-7 45.1 32.9 87-7

(sample 2) 53.5 47.3

96-2 69.1 69.0 96-5 7.62/10.01 96-9 75.3 69.8 2000

testing 2.602/2.

608 0.85/0.82

2012 grab 8.7/11.6 15-04 13.4/9.2 70

Average 11.1/10.4

61.0 61.1 N/A N/A N/A

Granular Volume: Estimated Volume: 100,000 m3 The estimated volume has been calculated by mining the developed suitability area to an average depth of 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. If additional development is required topsoil shall be added to the existing overburden waste stockpiles as located on the pit development plan.

• The crusher is recommended to be located at the base of slope northwest of Test Pit

15-05 with mining proceeding in a southeasterly direction. • Processed aggregate may be stockpiled on the pit floor northeast of the crusher site. • Due to the high relief of the deposit (approximately 30 metres) it will be necessary to

utilize a bulldozer to push material to the production area in order to avoid an excessively high vertical pit face.

• At the completion of mining, active pit faces shall be sloped to a minimum of 1 ½:1

with granular material. Reject material from aggregate production is not to be


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used to slope or infill pit faces without the prior approval of the Ministry Gravel Resource Manager.

Photographs:

TP15-02 spoil


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TP15-05 spoil

Upper Mining Area


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Crusher set up in foreground with mining area in background, southeast facing,

September 2010.

Southwest view of mining area, September 2019.


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View of pit floor looking west toward entrance, crusher setup location in background to

the left. September 2019.

View from east end of pit, looking southwest at suitability area/pit face, September 2019.

Samantha Kinniburgh Senior Aggregate Resource Specialist


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Documents

Larch Hills Pit No. 0414 · 15-04 13.4/9.2 70 Average 11.1/10. 4 61.0 61.1 N/A N/A N/A . Granular Volume: Estimated Volume: 100,000 m. 3. The estimated volume has been calculated