2232 12TH ST 2016-01-01 MF Import

verett Land A;:sociation E-2559 February 27, 1995 Par�e 7 r P;,vement Areas All parziny and roadw�y areas �nay be supported r�n Ch�� r.ecnm- pacted nat :ve suhqra�ia or on a minimui^ of twelve ( 17 ) inches oE sl-ructural fill pl�ced in accocdance with the Sir,e YreE�arati�n section of this report. A yreater thickness may be nee�ted t� stabilize soft, wet or unstable areas. 1'he upper twelve ( 12 ) inches of pavemrnt subgrade should bE: compacted to at leasC 95 percent of. the m.-�xirnum r3ensity . Hel�w this level a compactive eEfort of 90 percent would be adequate. The pavement section for lightly loaded trafEic and parking areas should consist of two inche.s of asphalt concrete over four inches of crushed rock base or three inches oE asphalt treated base (ATB ) . Heavier loaded areas would require thick2r sections. We will be pli.ased to assist yoU in develupiny appropriate pavement sectiuns or specxfications for heavy traffic zones, iE needed, Site Yreparation and General Earthwork The buildi.ny and pavement areas should be stripped and cleared of. all slabs, existing pavements, trees, existiny utilities, surface vegetation, all oryanic matl-er and any oCher deleterious �'aaterial. Stripped mat:erials should be removed from th� site or stockpiled for later use in landscapinn„ if desircd. The stripped materials should not be mixed with any materials co be used as structural fill. Structural fill is defined as a.ny fill placed under buildings, roa.dways, slabs, pavements, or any other load beariny areas. S_,��otural fill _ unde_r___fla�r slabs and footings_ _sl�u1�__.-be laced in horizontal lifts and com � � p pacted to a minir�i��^, 9S--j>ar-cenY..- oE the maximum dry oensity in accordance with ASTi^ 'fest Designz- tion D-1S57-70 (ModiEied Proctor) . The fill matierials should be placed at or near the optimum moisture content . Fill undeC ��avements afid walks should also be placed in horizontal lifts and coinpacted to 90 percent of maximum density except for the top twelve ( 12) inches which should be compacted to 95 percent o£ maximum density. The moisture content of the on-site soils at the time of our exploration was above optimum. In addition, soils encountered cr�ntain an appreciable amount of fines . Therefore, unless the moisture content can be reduced, it may be necessary to use im�orted yranular soil as structural fill . The moisture content can be reduced by aeration in dry weather or using lime or cement �`.:abilization. Ideally, structural fill to be placed in wet �aeather should consist of a yranular material with a maximum �ize ` ��f three inches and no more than 5 percent fines passing the No. 20U sieve. Duriny dry weather, any compacCible non-•organic soil can be used as structural f 11. Earth Consultants, Inc