Laserfiche WebLink
JP Morgan Chase April 29, 2010 <br /> Geot echnical Investigat ion <br /> Proposed Chase Bank Everett, WA PSI Report No. 0704186 <br /> FIELD EXPLORATION PROGRAM <br /> General <br /> PSi explored subsurface conditions at tha site on April 20, 2010 with four soil borings (6-1 <br /> through 8-4) to depths of 19'/� to 26Y� feet below the ground surface (bgs). The explorations <br /> were explored at the approximate locations shown on Figure 2. The borings were advanced <br /> using hollow stem and mud rotary drilling methods with a tr�ck mounted CME 75 drill rig. <br /> A representative of PSI geotechnical staff was present during the explorations to record soil and <br /> groundwater conditions encountered in our boring and to obtain soil samples for laboratory <br /> testing. <br /> Sampling Procedures <br /> Soil samples were obtained from the boring using a 2-inch OD Split Spoon sampler in general <br /> conformance with guidelines presented in ASTM D 1586, Standard Test Method for Penetration <br /> Test and Split Barrel Sampling of Soiis. The sampler was driven into the soil a distance of 18 <br /> inches or to refusal using a 140-pound auto-hammer free falling a distance of 30 inches. The <br /> sum of the blows required to drive the split spoon sampler the final two increments of 6 inches is <br /> recorded in the boring logs. If the sampler met refusa!, the number af inches driven and the <br /> number of blows is recorded. Blow counts shown in the boring logs are uncorrected blow <br /> counts as recorded in lhe field. <br /> Samples obtained in the exploration were sealed in airtight containers to retain moisture and <br /> returned to our laboratory for additional examination and testing. <br /> Field Classification <br /> Soil samples were initially classified in the field. Consistency, color, relative moisture, degree of <br /> plasticity, peculiar odors and other distinguishing characteristics of the soil samples were noted. <br /> The terminology used in the soil classifications and other modifiers are defined in the General <br /> Notes in this attachment. <br /> Exploration Logs <br /> Summary of the boring log follows in this appendix. The left-hand portion of the boring log <br /> provides our interpretation of the soil encountered in �he boring, sample depths, and <br /> groundwater informalion. The right-hand, graphic portion of the boring logs shows the results of <br /> the SPT blow counts and the resuits cf laboratory testing. <br /> �c• <br /> NJ' A-2 <br />