2001 W MUKILTEO BLVD 2016-01-01 MF Import

�' � � � Proposed McCabe Residena Remalel Everctt, Washington Project No. 6G-9701022 Page 9 sensitive to wet wather, and does not stand up to construcdon haffic t� well �a select fill. Select granular fill should consist of �and and gravel mixtures with at ka�t 30 percent rctained on the U.S. No. 4 sieve and las than S percent by weight pdssing the U.S. No. 200 sieve, bned oa the frecdon pesainQ the U.S. No. 4 sieve. Select granular 611 is recortunended for use in wet weadia caditions, �a dixuued in the pectiaent xctions of this repoR. The suitability of wils �ued for structural fill depends primarilY on the Brada�on �nd mo�ahm content of the �oil wlxn it is pisced. As the 6nes conteat (that poction passioa d�e U.S. No. 200 sieve) of a soil i�, it bce�s inere�in61Y �ensidve w small chenga in moisture content and adequ�te compac6on becomea moro difficult or impoasibie to achieve. Soils ooabinini more dun abart S paant fuxs by weig6t (such � the on-site soi(s) cannot be coroisoently compected to the recommended de�roe when the moishue content is more than about 2 percent ebove or below optimum. If inclemeat wad�a or soil moisture rnntrnt prcvent the u�e of on-site or cortunon nuterid aa shucturel 611, it is recommended shat ux of aelect granular nll be coaaidered. It should be noted that dx pl�canent of structura1611 is in many ca4es weatl�er-depe�dent aai delaya due to inclement watha are common eva� when using selcet granuler filL When moisture conditioning of the soils is required w incraue the moistuie conteut of dry-of- optimum soils, it is eecommended that d�e soils be unifortnly bla►dcd with the added moiahne to provide a unifo�tn moisture content throughout the affxted soils. Strucnual fiU should be placed in IiRs not exceeding 8 incha in l000e thiclaiess. Individual IiRs should be compected such that a minimum density of at least 90 percrnt of the modified Proctor maximum dry density is achieved. Higher compsction levels should be �cltieved where speciRed in the project specifications of the local development standerds .'the uPPer 1 foot of subgtade soiis below foundation or floor support elements should be compacted w 95 penxnt of the same densiry standard. It is recommendal that a Giles representa6ve be present ducing the plecanrnt of stmchusl fill to obsave the work and perform a representative number of in-placx density tesb. In this way, the edequacy of earthwork may be evaluatec� as grading progresses. The soils at the subject site arc considered suitable for reuse as structural fill for fow�dation, floor slab, and pavement support, provided the soil does not contain significant organics or other deleteriow materials and is placed and compacted at a suitable moistueo content. At the time of our evalwuion, �oil moisture contents were elevated and reuse of the soils would be impossible without drying or other measuros to reduce excess moisture. -�-