RYZUK GEOTECHNICAL GEOTECHNICAL FIELD REVIEW / SITE INSTRUCTION (October 14, 2020)

GEOTECHNICAL FIELD REVIEW / SITE INSTRUCTION

Project No: 7877-3 Date: October 14, 2020 Project: Proposed Residential Structure – Geotechnical Investigation Client: Seymour Pacific Developments Ltd. Project Address: 1938 West Park Lane – Victoria, BC Contact: Dave Cooper Project PO: Email: dave.cooper@seymourpacific.ca

Distribution: Seymour Pacific - Brett Cheek (brett.cheek@seymourpacific.ca)

As requested, we visited the referenced site recently to review scaling work of the bedrock cutslope along the northern portion of the property overlooking the proposed parking lot. Our associated observations, comments, and recommendations in this regard are contained herein.

Scaling was carried out by hand to remove loose/fractured materials within the slope. The work was halted, however, as removal to complete the work to our satisfaction would require encroachment over the property boundary which we understand is not allowable. Furthermore, with additional consideration of the future maintenance aspects of the dead zone that would result between the rock slope and a chain-link fence at back of curb as initially planned, a block wall similar to that along the eastern section is a recommended alternative.

This wall would consist of a 1.8 m high (2.5 block stack), consisting of one half block on the base and an ‘L’ block on the top. The wall face batter would match the adjacent, and a length of geogrid is to be included between the middle and upper block, extending back to the rock face. The backfill should consist of 75 mm minus crushed rock (or approved equivalent) and be compacted with a vibratory attachment of a small excavator or backhoe where space permits. The subgrade should also be compacted thoroughly prior to block placement. We consider that a drain can be omitted for this wall given the free draining materials and block joint face drainage. We recommend that the planting above the blocks consist of a tightly fit cedar hedge (or similar) to provide a natural barrier to stop small rock debris and therefore the upper 0.5 m of fill can consist of topsoils. We note that a fence is still recommended at the western limits to restrict access to the transition portion between the wall and the slope mesh at the northwest corner.

We should return to the site to inspect subgrade preparations and provide a WorksafeBC memo prior to workers accessing the area to place blocks and grid.

We trust the preceding as suitable for your current requirements. Please contact us with any questions or concerns.

Best Regards,

Andrew Jackson, P.Geo., Eng.L. Project Manager