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M&s Jobit 19639.010 Exhibit A Page 3 of 9 • One boring will be up to 10 feet deep for geotechnical information; • One boring will be drilled for sampling soil for corrosivity testing per PG&E requirements. • The borings will be backfilled with grout per agency requirements. Excess drill cuttings will be placed in the southeast corner of the intersection where fill will be imported for the road widening; • The pavement will be cored with the drill rig in two locations to obtain existing pavement section information (thickness of AC and AB). We will assume the subgrade has an R-Value of 5. These coreholes will be patched with fast setting concrete; • Laboratory testing including in-situ moisture and density,Atterberg limits,and single point consolidation; • Engineering analysis. 1.4.2 Import Soil Testing: It is our understanding that import soil for road widening will be from a stockpile of soil owned by the City of Pleasanton. We propose to collect 4 soil samples from the stockpile and combine them into a single sample. The following laboratory tests will be performed on the single, combined sample: • Environmental testing consisting of Total Petroleum Hydrocarbons Gas, Diesel and Motor Oil, Pesticides, PCB, Heavy Metals plus hexavalent chromium, and Volatile and Semi-Volatile Organic Compounds; • Corrosion testing per PG&E requirements for buried transformers consisting of resistivity, pH,chloride, sulfate, and sulfide. These test results will be included in a separate letter(see Corrosion Testing below); • Geotechnical testing consisting of gradation and Plasticity Index. These test results will be included in the geotechnical investigation report. 1.4.3 Corrosion Testing:The soil samples obtained from the geotechnical boring and the stockpile described above will be tested for corrosion per PG&E standards, and will consist of resistivity, pH, chloride, sulfate, and sulfide. These test results along with the soil stockpile test results will be summarized in a separate letter that can be provided to PG&E. Deliverables: Geotechnical Report 1.5 Joint Trench Services Preliminary Investigation—The Consultant will make an initial site visit to determine the existing facilities to be relocated and the extents of new service to be provided. Consultant shall contact Client's representatives to obtain preliminary plans and computer files. Consultant will obtain from PG&E, telephone, and cable company information needed to begin initial engineering process. Intent Drawing—Upon receipt of information received through the preliminary investigation portion of the project,the Consultant will forward to the various utilities and agencies having jurisdiction a drawing depicting the proposed joint trench. The drawing will show the proposed relocations of the existing joint trench facilities and the location of the proposed joint trench along with the service stub locations to the required service points. Included with the submittal drawing will be copies of the various improvements plans and computer files as required by the various utilities. Budgeting—Prepare budgets for contractor construction costs and utility contract costs/ refunds.This item will be updated with submittal sets. P:\19639\off ice\contracts\2012-03-02_M ac Kay&so m ps_Exh ibit-A.doc