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Phase II Sampling and Analysis Plan SOP-2—Drilling and Sampling <br /> Port of Stockton-Rail and Bridge,Stockton,CA FN <br /> • Geologist name <br /> • Location of boring/Boring identification <br /> • Driller's name/Drilling subcontractor name/Type of drill rig <br /> • Diameter of inner and outer drill casings <br /> • Diameter of surface casing, casing type and method of installation <br /> • Types of drilling fluids and depths at which they were used <br /> • Weather conditions <br /> • Start and completion time for each boring <br /> • Standard Penetration Test blow counts per six-inch advance, if applicable <br /> • Recovery length of each sample <br /> • Visual description of soil using the Unified Soil Classification System (USCS) <br /> (ASTM-D-2488-00) <br /> • Depths at which each soil sample was collected for chemical or physical analysis <br /> • Total number of samples taken <br /> • Total depth of boring <br /> • Boring refusal (if applicable) <br /> • Water losses (if applicable) <br /> • Water bearing strata (depth and thickness) <br /> • Depth at which saturated conditions were first encountered <br /> • Lithologic descriptions and depths of lithologic boundaries <br /> • Zones of caving or heaving <br /> • Depths at which drilling fluid was lost and amount lost <br /> • Drilling rate <br /> • Drill rig reactions such as chatter, rod drops, or bouncing <br /> • Location of the boring relative to an easily identifiable landmark. <br /> 6.2.3 Drilling Procedures <br /> Generally, drilling activities will be completed in accordance with the planned activities presented in <br /> the project work plan. Additionally, the following requirements will apply: <br /> • All necessary precautions will be taken to prevent leakage of hydraulic oil or other <br /> contaminants from the drilling rig into the borehole or onto equipment that is placed in the <br /> hole. <br /> 2-6 <br />