DRILLING AND SAMPLING METHODS. 4.3.1 Unless otherwise stipulated, drilling and sampling will be performed in accordance with current applicable ASTM Standards and other standards, including but not limited to ASTM Standards D1586, D1587, and D2113. Samples of soil shall be taken at the ground surface, at two feet below existing grade and at each identifiable change in condition, but not further apart than five feet in each of the borings unless otherwise specified on the boring drawing(s). Where clayey cohesive soils are encountered, thin-walled tube samples shall be taken of representative strata. Split-spoon samples shall be placed in sealed jars labeled with the following information:(1) boring numbers, (2) sample number, (3) sample depth, (4) blows per increment required to drive sample as per applicable standards, (5) date, (6) Project name, (7) Sampling Technician's name. 4.3.2 Rock cores shall be not less than 1 3/8 inches in diameter, and shall be placed in core boxes properly labeled as indicated above. 4.3.3 The samples shall be preserved and field logs prepared either by a Consultant or by an experienced Soil Technician acting under the supervision of a Consultant. 4.3.4 The Consultant shall notify the Owner's Representative before drilling equipment is removed from the site and advise the Owner's Representative as to the field description of soil conditions encountered. The Consultant shall perform such additional borings or other exploration as may be authorized by the Owner. 5.1 FORMAT:
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Sources: Consulting Agreement, Master Geotechnical, Material Testing, and/or Special Inspections Services Agreement