Chenault Pit No. 0651 - gov.bc.ca...Classification: Average (%) Range (%) Gravel (4.75-75mm) 51.1...

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

Chenault Pit No. 0651

2018 Technical Information Report

Location: The pit is located within the municipal boundary of Lillooet, on the west side of

Highway 99, approximately 2.0 km north of the junction of Highways 12 and 99.

Legal Description: Ministry of Transportation and Infrastructure owned parcel, legally

described as that part of District Lot 1294 lying north of District Lot 703 and east of the Pacific Great Eastern Railway Right of Way on Plan A22 Lillooet District, except Plans 33683, H17273 and KAP46682. UTM coordinates for the pit are Grid Zone 10, 576990 Easting, 5617737 Northing.

Chenault Pit No. 0651 2018 Technical Information Report ===============================================================

2 January 2018

Gradation: The average and range of gradations of laboratory samples as well as oversize rock field estimates for material from the 2017 testing program (within the Suitability Area) at Chenault Pit are as follows:

Laboratory Samples

Classification:

Average (%) Range (%)

Gravel (4.75-75mm) 51.1 33.2-63.3 Sand (0.075-4.75mm) 45.1 31.7-63.2 Fines (<0.075mm) 3.6 1-7.3

Oversize Field Estimates

Classification:


Boulders (>375mm) 0.3 0-2 Cobbles (150-375mm) 4.5 0-15 Cobbles (75-150mm) 8.7 0-20

The maximum size rock observed was 480 mm. The average and range of gradations of laboratory samples as well as oversize rock field estimates for material from the 2015 testing program (within the Suitability Area) at Chenault Pit are as follows:

Laboratory Samples

Classification:


Gravel (4.75-75mm) 65.4 57 – 87 Sand (0.075-4.75mm) 30.3 12 – 39 Fines (<0.075mm) 4.3 1 – 7

Oversize Field Estimates

Classification:


Boulders (>375mm) 0.84 0 – 5 Cobbles (150-375mm) 6.7 0 – 15 Cobbles (75-150mm) 7.5 0 – 10

The maximum size rock observed was 450 mm.


3 January 2018

Wet Sieve Analysis Chart: For 2017 testing program:

Aggregate Gradation Charts: 2017

PROJECT REPORT OFSIEVE ANALYSIS SUMMARIES PERCENT PASSING

Project: Chenault Pit Project No.: 0Sample Source: Test Pits Client: 0Material: PIT RUN Date: September 27 2017

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 0.07517-01 0.1-2.5 201 100 100 99.6 98.6 98 94.3 85.9 64.2 44.8 28.2 18.1 12.2 9 6.817-02 1.5-2.7 202 100 100 100 97.5 95.2 88.4 79.7 59.3 44 30.1 19.8 13.3 10 7.717-03 0.1-5 203 100 100 99.5 96.4 93.6 89 85.7 72.8 58 42.5 24.2 10.4 5 2.917-04 0.1-5 204 100 100 100 98.8 96.7 94.2 90.2 75.6 61.1 45.7 25.7 9.8 4.2 2.817-05 0.1-5 205 100 100 95.9 88.3 81.8 74.7 67.8 50.7 36.1 24 12.3 6.3 4.2 3.217-06 0.1-2 206 100 100 96.9 84 70.9 53.1 45.6 32 24.4 17 8.8 5.7 4.9 4.517-06 2-5 207 100 100 98.8 96.8 95.5 94.4 92.9 88.6 84 76.4 34 6.1 2.1 117-07 0.1-5 208 100 98.7 97.9 88.6 82.6 75.3 67.2 51.6 38.7 24.1 12.2 7.3 5.7 4.717-09 0.7-5 210 100 100 99.3 89.1 83.5 75.1 70.2 55.2 39.6 22.2 11.7 7.7 6.2 5.317-10 2-5 211 100 100 99.5 92.9 86.7 81.3 76.8 66.8 59.9 52.3 40.1 19.8 8 3.617-12 0.9-5 213 100 100 98.5 94.1 88.1 74.5 64.7 43.5 32.3 26.7 23.3 15 4.7 2.117-13 0.5-5 214 100 100 100 97.5 94.5 87.8 82.9 65.2 49 35.5 24.1 15.9 11.8 917-16 0.2-4.5 123 100 93.5 92 85 79.8 72.5 66.5 50 35.5 25.2 12.2 4.2 2.5 1.817-17 0.6-2.6 124 100 97.3 90 77.5 70.5 65.2 60.3 46.6 35.5 27.2 19.5 13.4 9.9 7.317-19 0.9-4.8 126 100 98.1 94.5 86.1 79.8 70.6 64.6 50.7 34.7 23.9 17.1 12.5 9.6 7.317-21 0.2-5 128 100 98.6 95.1 86.8 78.3 67.5 60.4 43.7 28 16.9 11 7.7 6.2 5.317-22 0.1-4 129 100 100 98.7 92.2 83.2 71 60 36.7 22.2 16.2 12.5 8.3 6.2 5


4 January 2018


5 January 2018

2015

75 37.5 25 19 9.5 4.75 2.36 1.18 0.600 0.300 0.150 0.075

0102030405060708090

100

0.01 0.1 1 10 100

% Passing

Grain Size (mm)

Test Pit 15-01 , Depth 0-5.0 m, Bag # 52243Test Pit 15-02 , Depth 1.3-5.0 m, Bag # 420Test Pit 15-03 , Depth 1.0-5.0 m, Bag # 479Test Pit 15-04 , Depth 0.4-5.0 m, Bag # 288

75 37.5 25 19 9.5 4.75 2.36 1.18 0.600 0.300 0.150 0.075

0102030405060708090

100

0.01 0.1 1 10 100

% Passing

Grain Size (mm)

Test Pit 15-05 , Depth 0.3-5.0 m, Bag # 578Test Pit 15-06 , Depth 1.5-5.0 m, Bag # 354


6 January 2018

Summary of Test Pit Logs: (with results bolded in the chart) 2017

1 OF 1

PROJECT: Chenault Pit SAMPLED BY: Samantha Kinniburgh & Steven LeePIT #: 0651 METHOD: Excavator

DISTRICT: Cariboo DATE: September 27-28

TP SAMPLESOILS CLASS

SAND TYPE

REMARKS

FROM TO BAG No. G S F MAX SIZE

75mm 150mm

150mm - 375mm >375mm F M C Lab Sieve

17-01 0 0.1 Floor0.1 2.5 201 SP 29 70 1 100 1 0 0 C-M Consistent, sloughing after 1m

SP 35.8 57.4 6.8 Conglomerate, cementing fines

17-02 0 0.2 Floor0.2 1.5 SP 39 60 1 Lots of oversize present1.5 2.7 202 SP 33 65 2 300 5 3 0 C-M Sloughing after 1m

SP 40.7 51.6 7.7

17-03 0 0.1 Floor0.1 5 203 SP 44 55 1 70 0 0 0 C-M sand seam off W side of TP

West 19 80 1visible, seems to change 1/2 through

verticallySP 27.2 69.9 2.9

17-04 0 0.1 Floor0.1 5 204 SP 24 75 1 120 1 0 0 M consistent, sloughing at 2.5m

SP 24.4 72.9 2.8

17-05 0 0.1 Floor sand seam at N end0.1 5 205 SP 38 60 2 270 5 2 0 C-M cementing fines, oversize

GP 49.3 47.4 3.2

17-06 0 0.1 Floor0.1 2 206 GP 60 39 1 clay chunks towards E side

GP 68 27.5 4.52 5 207 GP 80 19 1 100 2 0 0 M 2 samples taken

SP 11.4 87.6 1

17-07 0 0.1 Floor Lots of OS present0.1 5 208 GP 50 47 3 150 5 1 0 C-M Clay-like feel in sand

GP 48.4 46.8 4.7

17-08 0 0.1 Floor

0.1 5 209 GP 52 46 2 400 8 2 1 C-M Consistent throughout, same as 17-07

ESTIMATED GRADATION

ESTIMATED ROCK 75mm

AGGREGATE LOG

DEPTH


7 January 2018

PROJECT: Chenault Pit SAMPLED BY: Samantha Kinniburgh & Steven Lee

PIT #: 0651 METHOD: Excavator

DISTRICT: Cariboo DATE: September 27-28


SAND TYPE

REMARKS

FROM TO BAG No. G S F MAX SIZE75mm 150mm

150mm - 375mm

>375m

mF M C Lab Sieve

17-09 0 0.1 Floor0.1 0.7 SP0.7 5 210 GP 57 40 3 130 6 1 0 C-M Consistent after sandy 0.6m

SP 44.8 50 5.3

17-10 0 0.2 Gravel to 2m, variable sand and gravel0.2 2 GP N to S sand seam at 2m sloping down2 5 211 SP 34 65 1 100 3 0 0 C-M

SP 33.2 63.2 3.6

17-11 0 0.1 Floor0.1 5 212 GP 50 48 2 110 2 0 0 C-M Consistent throughout

17-12 0 0.1 Floor0.1 0.9 SP0.9 2.2 213 GP Noticeable changes in stratum2.2 5 SP 40 58 2 160 5 1 0 C-M Composite sample taken from 0.9-5m

GP 56.5 41.1 2.1

17-13 0 0.1 Floor0.1 0.5 SP Lots of oversize0.5 5 214 GP 60 39 1 300 20 10 0 C-M

SP 34.8 56.3 9

17-14 0 0.1 Floor0.1 4.5 215 GP 60 39 1 290 15 8 0 C-M Consistent with 17-13

17-15 0 0.5 SP Sticky clay, lots of cementing. 0.5 4.8 216 GP 55 42 3 120 10 0 0 C-M OS present

17-16 0 0.2 Floor0.2 4.5 123 GP 53 45 2 210 10 5 0 C Consistent with 17-15

GP 50 48.2 1.8

AGGREGATE LOG

DEPTHESTIMATED

GRADUATIONESTIMATED ROCK 75mm


8 January 2018

PROJECT: Chenault Pit SAMPLED BY: Samantha Kinniburgh & Steven Lee

PIT #: 0651 METHOD: Excavator

DISTRICT: Cariboo DATE: September 27-28 2017


SAND TYPE

REMARKS

FROM TO BAG No. G S F MAX SIZE 75mm - 150mm

150mm - 375mm

>375m

mF M C Lab Sieve

17-17 0 0.6 SP Dirty, lots of boulders0.6 2.6 124 SP 20 76 4 400 12 10 1 M-F Will need primary crusher

GP 53.4 39.3 7.3

17-18 0 0.6 Floor Lots of boulders0.6 1.3 GP Dirty, layer of fines1.3 1.5 SP May be STP area1.5 4.2 125 SP 45 52 3 480 15 10 2 C-M

17-19 0 0.6 Floor Lots of boulders0.6 0.9 SP Consistent with 17-180.9 4.8 126 SP 40 57 3 400 15 10 2 C-M

GP 49.3 43.5 7.3

17-20 0 0.25 Floor Boulders, dirty sand0.25 5.1 127 GP 49 48 3 390 20 15 1 C-M Similar to 17-16 and 17

17-21 0 0.2 Floor0.2 5 128 GP 55 42 3 270 15 10 0 C-M Boulders, dirty and gritty

GP 56.3 38.4 5.3

17-22 0 0.1 Floor Sloughing & sandy on W side0.1 4 129 SP 47 51 2 320 15 10 0 C-M Top 2m very sandy

GP 63.3 31.7 5

AGGREGATE LOG

DEPTHESTIMATED

GRADUATIONESTIMATED ROCK 75mm


9 January 2018

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

Aggregate Quality: A summary of aggregate quality tests performed on pit run samples from the 2017 tested area are as follows:

TP

Micro-Deval (%) (C/F)

Sand Equivalent

(%)

Bulk Relative Density (C/F)

Absorption (%)

(C/F) 17-02 34 2.653/2.624 1.11/1.55 17-06 6.6/11.6 17-12 67 2.638/2.619 1.01/1.56 17-21 7.9/11.2 46 17-19 4.4/10.4

A summary of aggregate quality tests performed on pit run samples from the 2015 tested area are as follows:

Sample Atterberg Limit (%)

(LL/PI)

Sand Equivalent

(%)

Bulk Relative Density (C/F)

Absorption (%)

(C/F)

Micro Deval

(%) (C/F)

TP15-02 2.668/2.598 .91/1.63 TP15-03 72 12.7/8.0 TP15-05 29.0/12.3 23

Atterberg results indicate clayey fines. Low SE not suitable for some aggregate products.

1 OF 1

PROJECT: Chenault Pit SAMPLED BY: Bryan JamesPIT #: 651 METHOD: Excavator

DISTRICT: Cariboo DATE: 25-Jun-15

TP SAMPLE SOILS CLASS

SAND TYPE REMARKS

FROM TO BAG No. G S F MAX SIZE

75mm 150mm

150mm - 375mm >375mm F M C Lab Sieve

15-01 0 5 52243 GPGC 58 35 7 150 5 0 0 C G 64.4, S 28.2, F 7.4

15-02 0 1.3 GP 55 43 2 350 5 10 0 FMC1.3 5 420 GP 55 43 2 150 5 0 0 FMC G 63.2, S 34.4, F 2.4

15-03 0 1 Crush1 5 479 GP 59 39 2 300 15 15 0 C G 59.5, S 38.6, F 1.9

15-04 0 0.4 Asphalt0.4 2.5 GPGM 50 45 5 450 10 10 5 FM2.5 5 GP 59 39 2 450 10 10 5 FM

15-05 0 0.1 Crush0.1 0.3 TS0.3 5 578 GPGC 58 35 7 75 0 0 0 C G 62.2, S 30.8, F 7.0

15-06 0 0.3 TS0.3 1.5 GPGM 55 45 5 300 10 5 0 C1.5 5 354 GP 50 47 3 50 0 0 0 C G 86.8, S 12.0, F 1.2

Significant pea sized material

G 56.5, S 37.6, F 5.9

ESTIMATED GRADUATION ESTIMATED ROCK 75mm

480

AGGREGATE LOG

DEPTH


10 January 2018

Granular Volume: Estimated Volume: 90,000 m3 The estimated volume has been calculated by mining the developed Suitability Area (as per the pit development plan) to an average depth of 4.8 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 to be located on the pit floor, as indicated on the Pit Development Plan.

Mining is to proceed in a northerly or southerly direction. The south direction has an established pit face, whereas to mine towards the north requires lowering the pit floor to establish a new face.

• Clay seam should be avoided or removed during mining. Larger sand deposits are present in TP 17-09 and TP17-10 so mining in that direction may require more bleeding off of sand to obtain certain specified aggregate products.

• Please note that the test pits from the 2015 testing program may have been mined out and

therefore their references are historical information. The 2017 testing program and information will be the more accurate representation of the current pit material.

• Due to a high percentage of oversize rock contained within the deposit the use of a primary

crusher is required during aggregate production. • Processed aggregate may be stockpiled to the north of the production site where room is

available and as indicated in the pit development plan.

• It may be necessary to remove a quantity of roadside barrier and other items stored within the pit to effectively mine the gravel.

• It is recommended to maintain or reconstruct the east pit access road that runs from the

entrance and south to north of the pit upon completion of mining, to enable access for others, should it be mined into during this contract. It must be kept to the Health, Safety and Reclamation Code standards as per the Mine Haul Road Design Section 6.9.1.

• 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.


11 January 2018

Site Photographs:

Proposed stockpile area at north end of pit, September 2017.

North looking view of crusher setup location, September 2017.


12 January 2018

North looking view of visual berm and stockpiles, September 2017.

TP17-09 Spoil, September 2017.


13 January 2018

TP17-12, September 2017

TP17-16, September 2017.


14 January 2018


TP17-19 Spoil, September 2017.


15 January 2018



Samantha Kinniburgh Senior Aggregate Resource Specialist

Chenault Pit No. 0651 - gov.bc.ca...Classification: Average (%) Range (%) Gravel (4.75-75mm) 51.1...

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