1231 MADRONA AVE 2016-01-01 MF Import

i - � � C'eolnxrc l��vecliiaNnn and Geotechi�icnl linxb�eerin�• Itennrl 97-01-20 � 1?29.iladronoAve. -l.nl2 /ircrelL H'ashing(m� All fill sUould be placed in maximum eight (8) inch loose, ho!-izontal lifts compacted to a non-yielding uniform condition of at least 90% of the Modified Proctor dry density (ASTM D-1557) value. Fills placed in sloping areas greater than 5:1 (H:17 should be constructed only on properly benched and keyed soil, as specified in WSDOT Standard Specification section 2-03.3(14), Earth Embankment Cacstruction. Improperly benched and placed fill over slopes could result in movement or settlement of tlie fill at some later date. Permanently exposed fill slopes should not be steeper than 2:1 (H:17. If steeper slopes are necessary, reinforced slopes or retaining walls may be required. The development of design recommendations for these types of structures is beyond the scope of work approved at this time. GES, Inc. cau provide recommeudations and specifications for these types of special design requirements upon request. Slab on grade floor designs may be utilized on this site. We recommend that all floor slabs be placed with a minimum four (4) inches of cl�ean, free draining granular sand below them If a vapor barrier is placed below tl�e slab, we recommead that a minimum two (2) inches of sand be placed between the slab and the barrier to allow for proper curing of tl�e slab at the time of construction. 4.4 Cuts and Excavations Careful and prudent construction practices are advised when working around cuts, excavations and slopes graded from fills. All cuts and excavations should conform to Washington Department of Labor and Industries Standards for Constructioo Work, chapter 296-I55 WAC pnr! N. Gxcavations on this sitr, will stand in near vertical sidewalls to a ma�dmum deptU of four (4) feet. All excavations over four (4) feet in depth sliould be retained Uy suitably designed retaining systems or digging boaes imless the side slopes are laid back to a minimum I: I(H: !7 slope. Excavations for utility placement should be perfornied in compliance with WSDOT Standard Specification section 2-09, S1n�cnn•e Ercrrvalion. 7'lie depth of excavation, removal of unsuitable base materials and disposal of those materials sl�ould be pedonned in accordance with applicable sections ofthis report. 9 GES, Inc. IZ