08-20-1984 Planning Packet - Laserfiche WebLink

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Btrator t Road - aining walls ining walls I 75* of the constructed Bd a permit for anka Portable I, 1983. The time* no time ion member of the lake and nvestigation i if recently than 1/2-2" I whether any he hill. The .opes in order be roughly 50 IS no evidence n constructed, ctors that all Lis are located 6” timbers. I beps and tops of ne. tss to the dock.. ;k southeast of !ess. ^4 M 4 I No evidence has been presented to indicate whether the retaining walls are necessary to stabilize the bankr or whether they are desired constructed for that purpose. I measured the slope at about 70 percent (19* of drop in a 28* run) which without some stabilization seems quite precarious. The submitted plans do not indicate the depth of the walls or how they are anchored into the hillside. The applicant has give me the impression that these walls are for aesthetic purposes and to help stabilize the stairway and not necessarily the hill. The planter terraces may have some benefit in slowing runoff which otherwise would run right down the hill. On the other handr will retention and absorption of this runoff in^ the planter boxes cause saturation of the slope and possible sliding? The City Engineer has reviewed the plan presented and recommends^ that the owner substantiate the stability of the slope by submitting a report and recommendation from a qualified soils engineer. The rip-rapping done in 1983 appears to have been necessary to stop erosion and undercutting of the banks. Approximately 30* of rip—rap was done, but the remainder appears to be needed as soon as possible. Staff recommends that the applicant be required to submit the bank stability information as recommended by the Engineer. Your recommendation for approval or denial could be conditional on staff review of this information, or you could table the application. I GENERALmm mm m PROPERTY Sit< Pro Pie (fo Pie sui APPLia Nar Ma: OWNER Na Ma Da I FEES Othei