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I I I I I I I I I I I I I I I I I I I PART 2 - PRODUCTS 2.01 SOIL MATERIALS Po,. Satisfactory Soil Materia!s: ASTM 02487 soil classification groups G\^J, GP, GM, SM, SW and SP. B. Unsatisfactory Soil Materials: ASTM D2487 soil classification groups GC, SC, ML, MH, CL, CH, OL, OH and PT. C. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, crushed slag, natural or crushed sand. D. Drainage Fill: Washed, evenly graded mixture of crushed stone, or crushed or uncrushed gravel, with 100 percent passing a 1-1/2 in. sieve and not more than 5 percent passing a NO.4 sieve. E. Backfill and Fill Materials: Satisfactory soil materials free of clay, rock or gravel larger than 2 in. in any dimension, debris, waste, frozen materials, vegetable and other deleterious matter. PART 3 - EXECUTION 3.01 EXCAVATION A. Excavation is Unclassified, and includes excavation to subgrade elevations indicated, regardless of character of materials and obstructions encountered. B. Unauthorized Excavation: Removal of materials beyond indicated subgrade elevations or dimensions without specific direction. Unauthorized excavation, as well as remedial work directed by Engineer, shall be at Contractor's expense. C. Additional Excavation: 1. When unsuitable bearing materials are encountered at required subgrade elevations, carry excavations deeper and replace excavated material as directed by Engineer. 2. Removal of unsuitable material and its replacement as directed will be paid on basis of contract conditions relative to changes in work. D. Stability of Excavations: 1. Slope sides of excavations to comply with local codes and ordinances having jurisdiction. 2. Shore and brace where sloping is not possible because of space restrictions or stability of material excavated. 04/08 02200-2 06-5723