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, <br /> A. Protect structures,utilities,sidewalks,pavements,and other facilities from damage caused <br /> ' b3settlement, lateral movement,undernuning,washout,and other hazards created by <br /> eazthwork operations. <br /> � B. Tree protection is specified in the Divisiott 2 Section"Selective Demolition."See Architec# <br /> if it appears that grading may damage existing trees <br /> ' 3.2 DEWATERING <br /> A. Prevent surfac$water and stibsurface or ground water,fram pondmg on prepared subgrades, <br /> and from flooding Project srte and svrrounding area. <br /> ' B. Protect subgrades soils from softening and damage by rain or water accumulation. <br /> ' 3.3 EXCAVATION <br /> A. Classified Excavatwn: Excavatian is classified and mcludes excavatton to requued <br /> subgrade elevations. Excavation will be classified as eaRh excavation or rock excavation <br /> � as foltows: <br /> l. Earth excav�tion includes excavation of pavements and other obstructions visibla <br /> ' on surface;underground structures,utiiities,and other items indicated to be demolished and <br /> removed;together with soil aad other materials encountered that are not classified as rock <br /> or unauthorized excavation. <br /> � 3.4 STABILITY OF EXCAVATIONS <br /> A. Compiy with local crodes,ordinances, and requirements of authorities havin�jurisdiction <br /> , to maiutain stable excavations. <br /> 3.5 APPROVAL OF SUBGRADE <br /> ' A. Notify Arclutect when excavations have reacheci required subgrade. � <br /> B. When unforeseen unsatisfactory soil is present, continue excavation and replace with <br /> ' compacted backfill or filI material as directed. <br /> 3.b UNAUTHORI�ED EXCAVATION{TF ANY) <br /> , A. Fill unauthorized excava#ion under foundations or wall footings by eartendizig indicated <br /> bottom elevation of concrete foundation or footing to exca.vation bottom,without altering <br /> required top elevation. Lean concrete fill may be used to bring elevations to pmper p�sition <br /> when accepta.hle to the Architect. <br /> , 1. Fiil unauthorized excava�ions under other construction as directed by the Architect. <br /> � 3.7 STORAGE OF SOIL MATERIALS <br /> A. Stocicpile excavated materia.ls acceptable for backfill aud fill s�il materials, inaluding <br /> , acceptable bonow materials. Stockpile soil materials without intermixing. Place,grade, <br /> .and shape stockpiles to drain surface water. Cover to preveat wind-blown dust. <br /> 1. Stockpile soil materials away from edge of excavations. Do not store.within drip <br /> ' line of remaining trees. <br /> 3.8 BACKFILL <br /> ' A. Backfill excavations promp#ly,but not before completing the following: <br /> EARTHWORK Page 3 of 6 <br /> � <br />