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Surface&Subsurface Contamination Report Page 6 Sandhu Project Project No. 597.1 February 12, 2009 1.0 INTRODUCTION 1.1 Purpose The purpose of this Surface and Subsurface Contamination Report is to evaluate the current and past uses of the Property as well as nearby off-site facilities in order to assess the potential for the subject Property to have been impacted by contamination that could pose a threat to human health. The requirements of the report are promulgated by San Joaquin County Development Title 9-905, Section 12. The ordinance outlines the scope of work to be completed for properties proposed residential zoning. The Surface and Subsurface Contamination Report is intended to evaluate and potential source contamination caused by past or current uses of the subject Property. The report is to include the following elements: • Description of the Property • Discussion of past, present, and proposed uses • Identification of past and current sources of contamination • Evaluation of potential contaminant sources • Conclusions regarding potential contamination • Recommendation regarding additional work The scope and purpose of the Surface and Subsurface Contamination Report has many aspects in common with a Phase I Environmental Site Assessment (ESA), but is somewhat different in the application and the details. The use of the term "recognized environmental condition" is, however, used in the report and bears the same meaning as used in a Phase I ESA. This report is similar in many respects to a Phase I Site Assessment. The commonly accepted standard for the completion of Phase I ESAs is outlined by the American Society for Testing and Materials (ASTM) in their Standard (E- 1527-05, Standard Practice for Environmental Site Assessments._ Phase I � Environmental Site Assessments Process. The purpose of this process is to identify, to the extent feasible and practical in the time frame allowed during the completion of a property transaction, the presence or absence of"recognized environmental conditions". That standard defines a recognized environmental condition as: "the presence or likely presence of any Hazardous Substance or Petroleum Product on the Property under conditions that indicate an existing release, 2937 Venenan Ave.,#B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 Modesto, CA 95356 Fax: (209) 569-0295