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' SECTION 02220 <br /> ' EXCAVATION AND BACKFILL <br /> PART GENERAL <br /> 1 . 1 SCOPE <br /> A . Provide all labor, materials , equipment and incidentals required to perform all <br /> excavating , backfilling , filling and grading , and disposing of earth materials as <br /> shown , specified , and required for construction of manholes , wet wells , conduits , <br /> ' pipelines , structures , roads , wetland treatment areas , retention and detention <br /> areas , and all other facilities required to complete the Work in every respect . <br /> ' B . All necessary preparation of subgrade for slabs and pavements is included . <br /> C . No classification of excavated materials will be made . Excavation includes all <br /> ' materials regardless of type , character, composition , moisture , or condition <br /> thereof. <br /> ' D . Examine the site and review the available test borings or undertake an <br /> independent subsurface investigation prior to submitting a bid , taking into <br /> consideration all conditions , including water table , that may affect the work . The <br /> ' OWNER and ENGINEER will not assume responsibility for variations of subsoil <br /> quality conditions at locations other than places shown and at the time the <br /> investigations were made . <br /> 1 . 2 RELATED SECTIONS <br /> ' A . Section 02050 , Site Preparation , <br /> B . Section 01410 , Testing Laboratory Services . <br /> ' C . Section 02225 , Erosion Control and Treatment of Dewatering Water and <br /> Stormwater Runoff From the Construction Site . <br /> 1 . 3 DEFINITIONS <br /> A . Excavation - Earth or other below surface material to be removed from a <br /> trench or other cavity for installation of structures or underground utilities . <br /> B . Earth/Soil - Unconsolidated material in the crust of the Earth derived by <br /> weathering and erosion . Earth includes : <br /> 1 . Materials of inorganic and organic origin ; <br /> 2 . Boulders less than 1 /3 cubic yard in volume , gravel , sand , silt , and clay ; <br /> ' Last revised 9/10/02 02220- 1 EAST GIFFORD <br /> RIPublic Works\Keithmstormmeter Projects\Gifford East\construction contract\Technicai Specifications\Final Specifications\Division <br /> ' 2\02220 - Excavation and Backill .doc <br />