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1 r' <br /> g 9 <br /> E ` <br /> l City of Stockton A68106.03A <br /> May 29, 1996 Page 7 <br /> L .4.4 Technical Report: Upon completion of field and laboratory activities, a technical <br /> report will be prepared summarizing results and findings (including the final logs of soil <br /> borings and laboratory analysis reports). Evaluations will be provided regarding the vertical <br /> 1 and lateral extent of PPC migration in soil and the presence or absence of PPCs in <br /> groundwater. If the data is adequate, a PPC contamination contour map and cross section <br /> will be prepared and an estimate of the mass and volume of contaminant will be provided. <br /> Finally, recommendations regarding the need for further site assessment and/or remedial <br /> action alternatives will be presented. <br /> � rr <br /> 5.0 SITE SAFETY PLAN <br /> 1 <br /> j The site safety plan for Twining personnel assigned to this project is presented in Appendix <br /> B. <br /> 6.0 LIMITATIONS <br /> i <br /> The proposed work is intended to be an interactive process. Additional work may, be <br /> required to more fully assess the extent of petroleum product migration in soil. <br /> The purpose of a geologic/hydrogeologic study is to reasonably characterize existing site <br /> 1 y ° conditions based on the geology/hydrogeology of the area. In performing such a study, it <br /> is understood .that a balance must be struck between a reasonable inquiry into the site <br /> conditions and an exhaustive analysis of each conceivable environmental characteristic. <br /> Conditions of interest may exist at the site that cannot be identified by visual observation <br /> alone. Where subsurface exploratory work is performed, our professional opinions are <br /> based in part on interpretation of data from discrete sampling locations that may not <br /> represent actual conditions or unsampled locations. If conditions of interest are not <br /> identified during performance of the work, such a finding should not be construed as a <br /> i <br /> guarantee that such conditions do not exist at the site. <br /> The proposed work scope assumes the site will be accessible at the time work is performed. <br /> Twining shall not be responsible for damage to underground utilities or installations which <br /> are not accurately shown on site plans provided to Twining by the site owner before work <br /> ' begins. Security of the site is the responsibility of the client. <br /> The professional services will be performed, the findings obtained, and the conclusions <br /> prepared in accordance with generally-accepted engineering principles and practices in San <br /> Joaquin County at the time the work is performed. This warranty is in lieu of all other <br /> warranties, either expressed or implied. <br /> r <br /> j <br /> i <br />