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I Additional Groundwater Investigation and Remiw_k Feasibility Evaluation Work Plan Stockton Center Site Authority-University Park January 25,2005 Page 11 Condor proposes to employ Environmental Bio-Systems, Inc. (EBS) of Mill Valley, California for the bench scale testing. Both the SJCEHD and the CRWQCB are familiar with this firm and the firm's principle manager and technical expert, James A. Jacobs, R.G., C.Hg. A detailed work plan for the bench scale testing is not provided in this work plan. Please refer to the project schedule portion of this work plan below, for more information regarding the recommended approach. 7.0 PROJECT SCHEDULE AND REPORTING If the SJCEHD and the CRWQCB approve the field work and laboratory analyses described above, in particular, and approve of the need for bench scale testing, Condor proposes that the described field work commence within six weeks (of said approval). Upon approval by the SJCEHD and CRWQCB of conducting the bench scale testing (in principle), Condor will provide a detailed work plan for the bench scale testing. This process will allow much of the field investigation to be conducted rapidly. The results of the field work and laboratory testing may allow the scope of work for the bench scale testing to be refined, or if site conditions observed during the field work or the results of the laboratory analyses indicate that ozone won't be effective, eliminate the ozone injection portion of the bench scale testing. Bench scale testing, if it is conducted (following approval of'the detailed work plan to be submitted following the first phase of field work), is anticipated to last several weeks to fully evaluate and optimize site conditions. Once the bench scale testing data has been evaluated, a report describing the well installations, the laboratory analytical results of chemical and physical parameters, and the bench scale results will be prepared for submittal to the SJCEHD and CRWQCB. At a minimum the report will include: (1) a description of the fieldwork conducted at the site, (2) the results of the laboratory analysis, (3) the results of the bench scale tests, and (4) Condor's recommendations for site remediation. Condor can provide a work plan, as an appendix to the report, proposing a specific remediation method and detailed description of the remediation system. The provisional phase II remediation/monitoring points (wells) shown in Figure 7 (Appendix A) are, at this point, simply an example of what will likely be proposed in the appendix (work plan) to the above described report. These wells, if installed, will be completed in locations and at depths based on the results of the work described in this plan. The delivery system for both the ozone and oxygen diffusion, and potentially other agents, can be the same two-inch diameter wells. The technologies can be moved around between the wells, as needed. If you need additional information or have any questions,please call Don Kresse at(209)234-0518. Respectfully submitted, CONDOR EARTH TECHNOLOGIES, INC. Casey Kipf Donald F.Kresse,R.G., C.Hg.,REA Staff Geologist Senior Environmental Hydrogeologist P:\3000_pd\3024 CSUS-Multi-Campus\3024C\Workplans\AdditionalGWlnv&RemedFeasEvalWorkPlan.doc