1230 MADRONA AVE 2016-01-01 MF Import

April 10, 2005 Proposed Single-Family Residencc L&A JoU No. SA019 Page 6 that site grading and foundation construction work of the proposed development be carried out and completed in tl�c dryer months Uetween April 1 and October 31. Grosion control and sitc stabilizatiai measures should be in piace beyond the above dry scason period to maintain sitc staUility. "I'he remnant thin layer of topsoil and the wisuitable wcak soils in the root zone sho�dd be completcly stripped witl»n the Uuilding pad of the proposed residcnce, the driveway and in areas whcrc thc subgradc soils arc to suppori traffic or structural load. The tmderlying, dense ta very- deuse, glacial drift and fresl� advance ourivash soils arc of high to moder�tely high shear s1ren�,I�. Conventional footing fouudations coustructcd on or into thesc dcposits may bc uscd for suppurling ihc proposcd residencc. Pennanenl lill lo bc placed over slopes slecper than l� percent grade sl�ould be ret�ined structurally. Structural fill, if rcquired for site grnding, shotdd be placed on compacted and proof-rolled, unyielding, tindisturbed, firm, uative soils in the glaci�l drift and/or advancc ouhvash soils, tollo�ving thc stripping of thc surficial unsuilaUle soils. The exposed grou��d cxcecding 15 perccnl grade should bc benchcd ��ith ��crtical steps not excccding 4 feet tall prior to placing slructural fill. S1orm rtu�ofC over itnpervious stn'ftices, such as rools and paved drive��ay, should be collected vid discharged into a storm sc��cr. ConccuUated storm�i�nter should not be disch:vged onlo the ground anywhere �vithin the sitc. CI;OLOGIC HA'I.ARDS Landslide ll:rr.:u•ds �I�I1C SUVjCC� SIIC IS I770C�1'fatcly to slceply sloped. It is, ho��•ever, underlain at relatively shallow depth by densc to ��c�y-densc, glncial drift and adv��nce ouhvash soils of high to moderately high L1U �C ASSOC1ATtiS, INC.