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Standard Penetration test (SPT), Modified California, and/or California samplers driven 18 inches into the soil using a 140 pound hammer falling 30 inches. A traffic control operation will be required during the investigation to increase the safety of the site and the continued operation of Shasta Street and Heller Street. Kleinfelder will subcontract a traffic controller for the field investigation. A professional from Kleinfelder will maintain logs of the materials encountered and obtain samples for visual examination, classification, and laboratory testing. Upon completion, borings will be backfilled with cement grout and patched with cold patch asphalt. The soil cuttings and excess cement grout will be drummed and hauled away by a waste subcontractor contracted by Kleinfelder on behalf of the City of Redwood City. We have estimated that one 55-gallon steel drums will be required for each boring. The drums will be stored on site during the drilling and subsequently picked up and disposed of by our certified waste hauler at the completion of the field work. The manifests will need to be signed by a City of Redwood City representative prior to the disposal of the drums. Subsurface samples obtained during the field exploration program will be retained for 60 days after the completion of the report. After that time, they will be disposed of. If requested, the samples may be stored for a longer time period or delivered to you (sample storage fees and/or delivery fees will apply). Safety The safety of our employees and subcontractors is of paramount importance to Kleinfelder. Kleinfelder uses the Loss Prevention System (LPS) to identify jobsite hazards, and to monitor and maintain safe work practices on a regular basis. Prior to field exploration, we will prepare a project specific health and safety plan and perform jobsite safety assessments at each work location along with tailgate safety meetings. Our supervisory staff will periodically observe work activities and provide comments regarding safe work practices to those involved. This process will be documented during the course of the safety reviews. Laboratory Testing Laboratory tests will be performed on selected samples to evaluate the density, gradation characteristics, corrosion characteristics, and strength of the materials encountered during our field investigation. We anticipate laboratory testing will include moisture content, dry unit weight, sieve analysis, Atterberg Limits, unconfined compression, and R-value. Selected samples will also be tested for preliminary corrosivity screening (pH, electrical resistivity, water-soluble sulfates, and water-soluble chlorides). These test results may be used by a qualified corrosion engineer in designing an appropriate corrosion control plan for the project. The tests selected and the frequency of testing will be based on the subsurface conditions actually encountered. 01201 PROP (SJ09P133) ct Page 3 of 7 Copyright 2009 Kleinfelder KLEINFELDER 2011 N. Capitol Avenue, San Jose, CA 95132 PhI408.586.7611 August 21, 2009 FAXI408.586. 7688