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Kennedy/Jenks Consultants Sampler Type/Depth. Give sampler type by the letter code listed below and identify the depth at the top of the sampling interval in feet below ground surface (bgs). Sampler type Inside diameter (in.) Code Standard penetrometer 1.38 SP Split-barrel (small) 2.0 SBS Split-barrel (large) 2.5 SBL HQ wireline core 2.3 PC Those descriptors are as follows for coarse grained soils: Very Loose 0 to 3 SPT Sampler 0 to 4 Mod CA Sampler Loose 4 to 7 SPT Sampler 5 to 10 Mod CA Sampler Medium Dense 8 to 23 SPT Sampler 11 to 30 Mod CA Sampler Dense 24 to 38 SPT Sampler 31 to 50 Mod CA Sampler Very Dense > 38 SPT Sampler >50 Mod CA Sampler Relative Density Descriptors for fine grained soils are as follows: Very Soft <1 SPT Sampler 0 to 1 Mod CA Sampler Soft 1 to 3 SPT Sampler 2 to 4 Mod CA Sampler Firm 4 to 6 SPT Sampler 4 to 8 Mod CA Sampler Stiff 7 to 12 SPT Sampler 8 to 15 Mod CA Sampler Very Stiff 13 to 23 SPT Sampler 15 to 30 Mod CA Sampler Hard > 23 SPT Sampler >30 Mod CA Sampler Regardless of the degree of adherence to the ASTM Standard Method, split barrel samplers are used as the preferred method of undisturbed sample acquisition in a hollow stem auger drilling. Upon retrieval of the sampler from the borehole, the sampler should be opened without making contact with its interior contents and the logging personnel should record the percent recovery or length of the sample recovered. Sample containers should be removed with a clean gloved (gloves may not be needed, depending upon requirements of HASP) hand and placed in a clean, dry area for examination and logging. The sample will be described per the above. Any lithologic changes that may be observable in the exposed ends of the intact core over the sampled interval should be recorded on the log before any disturbance thereof. The depth of the lithologic changes should be estimated and recorded on the boring log. The least disturbed sample container of the two deeper six-inch sample increments should be secured with Teflon® or aluminum end sheets and snug fitting plastic end caps, sealed with silicon tape, depending upon testing, sampler may be filled with one inch rings instead of 6 inch. Sealing material should also be compatible with subsequent testing requirements. Monitoring Well Installation Work Plan, B-g Barrel Ten Quarter Circle Land Company, Escalon, California \\SFO\Groups\I S-Grow p\Admi n\J ob\03\030118.27_BTO C LC\09-Reports\MVV-Install-W Pln\P.ppendix\APP_B.doc