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INTRODUCTION <br />This memo is intended to provide supplemental information to the memo dated November 4, 1994. <br />Also attached is additional information received from 13111 Sanders which provides details of plantings <br />for the 1:1 slope option. <br />ADDITIONAL ALTERNATIVE <br />It has been suggested to consider a third option as described in the following. <br />Option C: Remove existing wall and construct a new wall of timber material. <br />Details: Suggest wall replacement to be a timber retaining wall. <br />Advantages; A timber wall is slightly less in cost than the Keystone wall, <br />Disadvantages: Life span of 5 to 10 years and difficultly in correctly installing. <br />Cost: $15,000 to $20,000. <br />ENGINEERING RECOMMENDATION <br />Frain an engineering standpoint, either the 1:1 slope or the retaining walls are viable options. From <br />a purely structural and conservative standpoint, we have a slight preference for the retaining wall <br />because there is greater control of the constructed work and therefore there is greater assurance of <br />slope stability. However, the slope option may have cost, aesthetic or other benefits and can provide <br />an acceptable solution to the problem. <br />IMPLEMENTATION OPTIONS <br />If Council chooses to make improvements, it has several options including the following: <br />Retaining Wall Options: <br />•Prepare plans and specifications and bid the work. <br />Slope Option: <br />•Prepare plans and specifications and bid the work. <br />•Include the work in the 1995 Street Improvement project (Jackson, Lakeshore, <br />Old County Road q. <br />*Obtain quotes for the work. <br />•Add the work to another project by change order. <br />Z0'd <br />Page 131 <br />'OSSV '8 00?l1S9N09 <br />TT£T 929 me 917:TT 466T -9T -BT <br />