Kamloops, BC - Juniper West Place, Kamloops, BC Telford Geotechnical Ltd. has conducted field reviews and materials testing during the earthworks, structural grading fills, utility

File 146 Myra Place Phase 2, Kamloops, BC Page 1 of 2

Juniper West Developments Ltd. August 2, 2017 2049 Highland Place File: 146 Kamloops, BC V2E 0A8 Attention: Mr. Doug Mackenzie

Re: Geotechnical Summary Report – Juniper West Myra Place Phase 2 Myra Place, Kamloops, BC

Telford Geotechnical Ltd. has conducted field reviews and materials testing during the earthworks, structural grading fills, utility installation and road construction. A reduced size set of the Comprehensive Site Grading Plan Drawings (354‐352‐03 Rev. 5, 354‐352‐04 Rev. 5 and 354‐352‐05 Rev. 5) are attached for reference. The subsurface soils encountered during the site works were generally consistent with our Geotechnical Report dated April 18, 2016. The stability of the lots 10 to 21 was analyzed using Bishop’s simplified limit equilibrium analysis which analyses the critical circular sliding surface. A minimum factor of safety of 1.5 is required for residential developments, therefore a top of slope setback has been recommended for each lot for the construction of permanent structures. It is recommended that the setback distance be surveyed in the field, or reviewed by the Geotechnical Engineer of Record (GER) prior to construction. Following our review of the site works, the following items have been included, or revised from the original report:

1. A building slope setback has been established for Lots 10 to 21 along the west and north slope in order to provide a safe building area for permanent structures that would include dwellings, decks attached to the dwelling, accessory buildings (excluding slab‐on‐grade structures <10m2 in size) and in‐ground swimming pools. Modifications to the slope setbacks may be possible by lowering the foundation, constructing retaining walls, or other methods designed by the GER.

2. A gabion wall was constructed along the rear yards of lots 1 to 10 and a setback zone of 1.5 x the wall height was established behind the retaining wall. Within the setback zone, no fill slopes may be constructed that exceed 2H:1V and no retaining walls, structures or pools can be constructed.

3. All grading fills in the subdivision were compacted to a minimum of 95% Modified Proctor (ASTM D1557) dry density.

4. The roof drains are to be connected to the municipal storm system. 5. The perimeter drains for lots 1 to 21 may drain by gravity to the rear yard where possible as there

is expected to be negligible groundwater on site, or they can be discharged into the municipal storm system.

6. The perimeter drains connected to the municipal storm system would require a backflow preventer in the event that the storm sewer surcharges.

File 146 Myra Place Phase 2, Kamloops, BC Page 2 of 2

A summary table has been prepared “Summary of Expected Sub‐Surface Conditions and Geotechnical Guidelines” and is attached to this letter. If you would like further details or require clarification, please do not hesitate to contact the undersigned. For: Telford Geotechnical Ltd. Bill Telford, M.Eng., P.Eng. Geotechnical Engineer

JUNIPER WEST DEVELOPMENTS LTD.

MYRA PLACE PHASE 2 ‐ LOTS 1 TO 21

Table 1: Summary of Expected Sub‐Surface Conditions and Geotechnical Guidelines

Lot # Assumed Building Type Expected Soil Conditions Expected Bearing Soil PreparationPerimeter Drain

Connection

Roof Drainage

Connection

Gabion Wall Setback

(m)

Building Setback

from Top of Slope (m)

1 Walk‐out basement Compact sand and gravel, glacial till and structural fill Removal of topsoil and loose overburden soils Daylight/storm system Storm system 3.0 N/A









10 Slab‐on‐grade Compact sand and gravel and glacial till Removal of topsoil and loose overburden soils Daylight/storm system Storm system 3.0 0

11 Slab‐on‐grade Compact sand and gravel and glacial till Removal of topsoil and loose overburden soils Daylight/storm system Storm system N/A 5.0

12 Slab‐on‐grade Compact sand and gravel and glacial till Standard Daylight/storm system Storm system N/A 5.0







19 Walk‐out basement Compact sand and gravel and glacial till Standard Daylight/storm system Storm system N/A 5.0



Notes:

1 The Geotechnical Engineer of Record (GER) is responsible for all geotechnical aspects including modifications to these guidelines.

2

3

4 The expected soil conditions are based on site observations and the soil/bedrock conditions may vary from those indicated.

5 The structural fills in the subdivision were compacted to 95% Modified Proctor Dry Density (MPDD).

6 The expected soil bearing preparation may require compaction of subgrade to 95% MPDD.

7 Sulphate resistant concrete is recommended for concrete in contact with the ground.

8 In‐ground swimming pools require geotechnical input regarding placement and secondary liner system if deemed necessary.

APPENDIX A

No permanent structures can be constructed within the geotechnical slope setback line shown on the overall grading plan. Modifications to the slope setbacks may be possible by lowering the foundation, constructing retaining walls, or other

methods designed by the GER.

A gabion wall was constructed along the rear yards of lots 1 to 10 and a building setback was established behind the retaining wall. Within the setback zone, no permanent structures, fill slopes or retaining walls may be constructed that

exceed 2H:1V unless otherwise noted.

536

537

538

539

540

541

542

543

543 54

3

536

537

538

539

540

541

542

543

+3

320

+3

340

+3360

+3380

+3 400

+3 420

+3 440

N15

° 47

' 41.

77"W

43.8

0m

N22° 31' 43.17"W

45.16m

N75° 28' 36.00"E

28.55m

N38° 06' 29.46"W54.38m

N75° 28' 36.00"E

33.09m

N52° 59' 26.03"W

48.02m

N19

° 01'

25.

00"E

25.8

7m

N75° 28' 36.00"E

9.67m

N64° 23' 42.32"W

42.21m

N19

° 01'

25.

00"E

28.0

0m

S72° 20' 41.37"W

9.39m

N66° 38' 03.17"W

39.06m

N21° 0

4' 3

4.83

"E

24.6

6m

N19

° 34'

48.

77"E

9.70

m

N19

° 01'

25.

00"E

13.6

2m

N68° 42' 07.88"W

42.28m

N19

° 01'

25.

00"E

25.8

7m

N75° 28' 36.00"E

9.67mN75° 28' 36.00"E

33.09mN75° 28' 36.00"E

28.55m

L= 31.39

R= 247.00

S16

° 58

' 36.

17"E

35.6

8m

L= 26.36R= 247.00

S15

° 47

' 41.

77"E

37.3

2m

S74° 12' 18.23"W

18.30m

S74° 12' 18.23"W

18.30m

535.95

537.44

534.85

531.21

539.

06539.26

536.19

536.91

542.86

538.64 543.22

543.79543.25

539.51

540.30

540.

82

541.

78

542.

83

543.

51

543.87

12

11

10

1514

13

789

1,019m²

1,023m²

1,302m²

1,140m²1,228m²

1,366m²

678m²691m²709m²

L=15.37

R=15.20

L=12

.07

R=

15.2

0

L=6.

54R=

74.0

0

L=18

.44

R=74

.00

L= 18.44

R= 74.00

L= 18.40

R= 74.00

L= 10.84R= 74.00

L= 12.44R= 609.20

L= 18.31R= 591.20

L= 4.66R= 591.20L= 14.52

R= 56.00

L= 20.34

R= 56.00

L=8.

71R

=6.

69L=

23.5

3R

=14

.79

S24° 13' 45.02"E3.07m

S24° 13' 45.02"E1.94m

540.

08

540.69

541.92

543.29542.99

540.23

540.

84

541.

32

542.45

543.33

543.86

539.31539.04537.97

536.11536.02

536.21 536.

43

537.51537.51537.50

537.

50

536.97536.98

536.98

536.75536.76

535.61

535.60

535.58

535.57

536.00

539.28

539.06

537.96

1

SEP

30/16

ISSUED FOR MUNICIPAL APPROVAL CRC DTU

EXISTING GROUND CONTOURS(0.5m INTERVAL TYP)

OVERLAND FLOW ROUTE

GRADE BREAK

BUILDING SETBACK

LEGEND

DESIGN LOT ELEVATION AT MIDPOINT OF6.0m SETBACK· TOP OF CONCRETE ELEVATION TO

BE 0.20m- 0.40m ABOVE DESIGN LOTELEVATION

EXISTING FINISHED ELEVATION

AREAS CONSTRUCTED OF FILL

AREAS CONSTRUCTED IN CUT

000.00

TOP OF SLOPE

TOE OF SLOPE

FILE

: r:\clients\300-399\354\354-352\03 draw

ings\cad\01 layout draw

ings\354-352

250-828-0881

MYRA PLACE

PHASE 2

WEST OVERALL

GRADING PLAN

CC/VB

VB

MAY 2016

354-352

03

03 7

5

0 101:250

000.00

000.00

PROPOSED LOT CORNER FINISHEDELEVATION

NOTES:

1. VEGETATED EROSION PROTECTIONTO BE APPLIED TO ALL PERMANENTCUT/FILL SLOPES

2

OCT

21/16

ISSUED FOR IHA APPROVAL CC DTU

3

FEB

23/17

ISSUED FOR CONSTRUCTION CC DTU

4

JUL

5/17

ISSUED FOR GEOTECHNICAL REPORT CC DTU

SETBACK

RETAINING WALL DRAIN

3.0m

3.0m

2.5m

13.7m

13.592m

14.2m

8.6m

13.727m

9.2m

3.6m5

AUG

01/17

RE-ISSUED FOR GEOTECHNICAL REPORT CC DTU

13.6m14

.2m

9.2m

5.2m

E

P

P

5

3

1

3

4

9

1366

E

P

P

5

3

1

3

4

1

0

1365

536

537

538

539

540

541

542

543

+3

160

+3

180

+3

200

+3

220

+3

240

+3

260

+3

280

+3

300

+3

320

+3

340

S13

° 14

' 33.

58"E

11.5

3m

N15

° 47

' 41.

77"W

39.4

6m

N61° 59' 46.79"E

26.04m

S13

° 14

' 33.

58"E

31.2

1m

N15

° 47

' 41.

77"W

37.0

4m

N61° 59' 46.79"E

24.06m

N15

° 47

' 41.

77"W

33.9

5m

S74° 12' 18.23"W

21.41m

S86° 59' 33.00"E2.20m

N61° 59' 46.79"E

22.04m

N15

° 47

' 41.

77"W

39.6

3m

S86° 59' 33.00"E24.87m

N15

° 47

' 41.

77"W

44.4

5m

N75° 28' 36.00"E3.21m

S86° 59' 33.00"E21.11m

N15

° 47

' 41.

77"W

43.8

0m

N75° 28' 36.00"E

23.26m

N22° 31' 43.17"W

45.16m

N75° 28' 36.00"E

28.55m

N75° 28' 36.00"E

28.55mN75° 28' 36.00"E

23.26m

S16

° 58

' 36.

17"E

35.6

8m

S15

° 47

' 41.

77"E

37.3

2m

S74° 12' 18.23"W

18.30m

S15

° 47

' 41.

77"E

36.7

0m

S74° 12' 18.23"W

18.30m

S15

° 47

' 41.

77"E

35.5

1m

S74° 12' 18.23"W

18.30m

S15

° 47

' 41.

77"E

33.3

9m

S74° 12' 18.23"W

21.40m

S15

° 47

' 41.

77"E

31.5

3m

S74° 12' 18.23"W

21.40m

S15

° 47

' 41.

77"E

32.2

6m

S74° 12' 18.23"W

21.40m

S15

° 47

' 41.

77"E

34.6

6m

S74° 12' 18.23"W

21.39m

S15

° 47

' 41.

79"E

37.0

7m

540.91

540.46543.04

545.94

545.89

542.86

540.

70

543.22

541.73

540.53

541.17

540.40

545.52

544.99544.59

544.38

544.17

543.98

543.79543.25

543.

51

543.87

544.10

544.33

544.57 545.06

545.64

20

1918

17

1615

21

678 1

234

5

899m²

833m²869m²

983m²

1,024m²

1,140m²

999m²

662m²678m²691m² 768m²

715m²

678m²691m²739m²

L= 18.40

R= 74.00

L= 10.84R= 74.00

L= 12.44R= 609.20 L= 23.28

R= 609.20L= 23.28

R= 609.20L= 10.37

R= 609.20L= 13.30

R= 150.80L= 23.34R= 150.80

S67° 44' 38.46"W23.66m

S67° 44' 38.46"W2.26m

S67° 44' 38.46"W10.87m

L= 4.02R= 163.00

L= 3.99R= 129.00

L= 2.52R= 129.00

L= 3.46R= 267.06

S67° 44' 38.46"W18.08m

S67° 44' 38.46"W19.03m

S67° 44' 38.46"W19.03m

L= 21.42R= 171.67

L= 16.99R= 171.67

L= 21.51R= 591.20

L= 18.34R= 591.20

L= 18.31R= 591.20

L= 4.66R= 591.20L= 14.52

R= 56.00

L= 20.34

R= 56.00

541.92

545.14

544.66

544.15543.90

543.68

543.47543.29542.99

544.89

543.33

543.86544.12

544.33

544.56

545.48

546.00

543.14543.19543.17543.17542.17541.29

540.78540.08

539.75539.51

539.31539.04

536.02536.21 53

6.43 536.66

536.84537.01

537.38537.89

538.57

539.

87

540.

52

540.81541.19

543.00542.16

541.26

540.82540.10

539.74539.51

539.28

539.06

537.96

539.88

1

MAR

30/16

ISSUED FOR MUNICIPAL APPROVAL CRC DTU

EXISTING GROUND CONTOURS (0.5mINTERVAL TYP)

FILE

: r:\clients\300-399\354\354-352\03 draw


ings\354-352

250-828-0881

MYRA PLACE

PHASE 2

EAST OVERALL

GRADING PLAN

CC/VB

VB

MAY 2016

354-352

04

04 7

5

0 101:250

2

OCT

21/16


3

FEB

23/17


4

JUL

5/17


OVERLAND FLOW ROUTE

GRADE BREAK

BUILDING SETBACK

LEGEND

DESIGN LOT ELEVATION AT MIDPOINT OF6.0m SETBACK· TOP OF CONCRETE ELEVATION TO

BE 0.20m- 0.40m ABOVE DESIGN LOTELEVATION

EXISTING FINISHED ELEVATION

AREAS CONSTRUCTED OF FILL

AREAS CONSTRUCTED IN CUT

000.00

TOP OF SLOPE

TOE OF SLOPE

000.00

000.00

PROPOSED LOT CORNER FINISHEDELEVATION

NOTES:

1. VEGETATED EROSION PROTECTIONTO BE APPLIED TO ALL PERMANENTCUT/FILL SLOPES

SETBACK

RETAINING WALL DRAIN

2.5m

2.5m

2.5m

2.5m

2.5m

2.5m

3.0m

3.0m

3.6m

7.6m

6.1m7.8m

11.5

m

10.0m

10.5m

13.3

m

10.8m

9.4m

12.0m

13.4

m

11.5m

8.0m

3.7m

8.1m

5

AUG

01/17


10.5

m

7.3m

5.2m

TYPICAL LOT GRADING (LOTS 10-18)SCALE 1:250

T.O. CONCRETE EL.0.20 - 0.40

PROPERTYLINE

BACK OF CURB

ROAD GRADE VARIES

6.0m

±18.4- ±23.2

PR

OP

ER

TY

LIN

E

BUILDING SETBACK LINE

-0.1

2

3.25

m6.

0m

REAR PROPERTY LINE



BACK OF CURB

ROAD GRADE VARIES

6.0m

±25.5 - ±18.3

PR

OP

ER

TY

LIN

E

0.00


0.60

2.85

m

REAR PROPERTY LINE

VA

RIE

S

TOP OF 2:1 CONSTRUCTION SLOPE

NOTES:

1. FRONT YARDS OF LOTS 1-9 TO BE DIRECTED AROUND HOUSE TO SIDE YARDS.1.1. A TRENCH DRAIN OR SUMP WILL BE REQUIRED FOR DRIVEWAY DRAINAGE AND IS TO BE

CONNECTED DIRECTLY INTO THE MUNICIPAL STORM SYSTEM.

2. FRONT YARDS OF LOTS 10-21 TO MAINTAIN POSITIVE DRAINAGE TO THE STREET.

3. SIDE YARDS OF LOTS 1-21 TO MAINTAIN POSITIVE DRAINAGE AWAY FROM BUILDING TO REAR LOTLINE.

4. REAR YARDS OF LOTS 1-21 TO MAINTAIN POSITIVE DRAINAGE AWAY FROM BUILDING TO REAR LOTLINE.

5. FOUNDATION DRAINS OF LOTS 1-9 AND 19-21 TO DAYLIGHT IN REAR YARD WHERE POSSIBLE ANDPUMP TO MUNICIPAL STORM SYSTEM WHERE NOT POSSIBLE.

6. FOUNDATION DRAINS OF LOTS 10-18 TO DAYLIGHT IN REAR YARD WHERE POSSIBLE AND CONNECTTO THE MUNICIPAL STORM SYSTEM VIA GRAVITY OR PUMP WHERE NOT POSSIBLE.

7. ROOF DRAINS OF LOTS 1-21 TO CONNECT DIRECTLY TO MUNICIPAL STORM BY GRAVITY.

8. ALL FOUNDATION DRAINS CONNECTED TO MUNICIPAL STORM SYSTEM REQUIRE A BACKFLOWPREVENTOR UPSTREAM OF ROOF DRAIN CONNECTION.

9. GRADING OF LOTS 1-9 AND 19-21 BASED ON 2.74m BASEMENT HEIGHT.

10. MINOR ADJUSTMENTS TO DESIGN ELEVATIONS TO BE APPROVED BY THE GEOTECHNICAL ENGINEEROF RECORD.

11. REAR YARD DRAINAGE OF LOTS 1-9 TO BE ROUTED THROUGH LANDSCAPING AND CANNOT BECONCENTRATED.

12. LOTS 1-10 - A SETBACK ZONE HAS BEEN ESTABLISHED BEHIND THE RETAINING WALL. SEEGEOTECHNICAL REPORT FOR BUILDING RESTRICTIONS WITHIN THE SETBACK AREA.

13. LOTS 10-21 - A BUILDING SETBACK HAS BEEN ESTABLISHED ALONG THE WEST AND NORTH SLOPE.SEE GEOTECHNICAL REPORT FOR BUILDING RESTRICTIONS WITHIN THE SETBACK AREA.

FILE

: r:\clients\300-399\354\354-352\03 draw


ings\354-352

250-828-0881

MYRA PLACE

PHASE 2

TYPICAL LOT

GRADING DETAILS

CC/VB

VB

MAY 2016

354-352

05

05 7

5

0 101:250

TOE OF 2:1 CONSTRUCTION SLOPE

VA

RIE

SP

RO

PE

RT

Y L

INE

VARIE

S

0.00

⅊

T.O. BASEMENTFLOORCONCRETE SLAB

0.2-0.4m (T.O. CONCRETE)

TYPICAL LOT SECTION THROUGH LOTS 1-9SCALE 1:100

6.0m MIN

12 PROPOSED LOT GRADE

AT BUILD OUT

T.O. MAIN FLOOR

MYRA PLACE

ALL ROOF DRAINS TO CONNECT DIRECTLY TO STORM DRAIN BY GRAVITY

STRUCTURAL FILL

1.2m MIN BELOWEXTERIOR FINAL GRADE

STRUCTURAL FILL

2%

DESIGN LOT ELEVATION AT MIDPOINT OF 6.0m SETBACK.(SEE GRADING PLAN FOR LOT ELEVATIONS)

2% MINIMUM

10% AVERAGE

EXISTING GROUND



PROPERTYLINE

BACK OF CURB

ROAD GRADE VARIES

6.0m

±23.6

PR

OP

ER

TY

LIN

E


-0.1

2

3.25

m6.

0m

REAR PROPERTY LINE

VA

RIE

S

0.00

TOP OF 1:1 CONSTRUCTION SLOPE

TOE OF 1:1 CONSTRUCTION SLOPE

2.5m

2%

⅊

T.O. BASEMENTFLOOR

CONCRETE SLAB



6.0m MIN

11LOT GRADE AT BUILD OUT

T.O. MAIN FLOOR

MYRA PLACE

ALL ROOF DRAINS TO DISCHARGE TO STORM DRAIN BY GRAVITY

STRUCTURAL FILL

2.5m1.2m MIN BELOW

EXTERIOR FINAL GRADESTRUCTURAL FILL

2% AVERAGE


EXISTING GROUND

2%

⅊

CONCRETE SLAB



6.0m MIN

LOT GRADE AT BUILD OUT

T.O. MAIN FLOOR

MYRA PLACE

ALL ROOF DRAINS TO DISCHARGE TO STORM DRAIN BY GRAVITY

2% AVERAGE


EXISTING GROUND

2% MINIMUM



SEE NOTE 11

1

SEP

30/16

ISSUED FOR MUNICIPAL APPROVAL CC DTU

2

OCT

21/16


RETAINING WALL SETBACK LINE(SEE NOTE 12)

3

FEB

23/17


RETAINING WALL

⅊

SEE NOTE 13

SEE NOTE 13

⅊

SETBACK ZONE(SEE NOTE 12)

SLOPE SETBACK ZONELENGTH VARIES(SEE NOTE 13)

⅊

4

JUL

5/17


SLOPE SETBACK LINE

(SEE NOTE 13)

SLOPE SETBACK LINE

(SEE NOTE 13)

SLOPE SETBACK ZONELENGTH VARIES(SEE NOTE 13)



2% MINIMUM

5

AUG

01/17


Documents

Kamloops, BC - Juniper West Place, Kamloops, BC Telford Geotechnical Ltd. has conducted field reviews and materials testing during the earthworks, structural grading fills, utility