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Preliminary Endangerment Assessment Page 3 <br /> Former Haley's Flying Service <br /> GPE Project 474.2 <br /> 1.0 INTRODUCTION <br /> The general purpose and scope of the PEA is described in Section 1 of the PEA. The <br /> purpose of the supplemental work documented in this addendum was to determine whether <br /> the shallow groundwater has been impacted by the pesticide release documented in the <br /> original PEA. <br /> 1.1 Purpose and Scope of Work <br /> To accomplish the goal of evaluating possible pesticide impact to the groundwater, the <br /> following tasks were completed: <br /> 1 Collected six groundwater samples and tested them for the presence of organo- <br /> chlorine pesticides, <br /> 2 Evaluated health-risk impacts, and <br /> 3 Provided recommendations based on the findings of this addendum. <br /> 1.2 Report Organization <br /> The organization of this addendum loosely follows that of the original PEA. Section 2 is a <br /> brief description of the problem identified in this addendum. The actual sampling and <br /> laboratory analytical results are documented in Section 3, while Section 4 evaluates the <br /> quality of the information so obtained. Section 5 describes the associated human health <br /> implications. The conclusions and recommendations are detailed in Section 6. Two figures <br /> with graphical information are also provided, and four appendices containing laboratory data <br /> sheets and other basic information support the text. <br /> 2937 Veneman Avenue,Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto,Ca 95356 Fax: (209)569-0295 <br />