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WZI INC <br /> 3.0 INTRODUCTION <br /> 31 Scope of Work <br /> This Problem Assessment Report has been prepared by WZI Inc to summarize all past soil <br /> and groundwater site assessment and remediation activities that have occurred from 1987 <br /> to 1997 as a result of a leaking underground storage tank that had released gasoline fuel <br /> and its components Into the shallow subsurface at the Sebastiani Vineyards Woodbridge <br /> Cellars (Sebastiani) site, now known as Vendage Winery, located at 4614 West Turner <br /> Road, Lodi, California The location of the project site is shown in Exhibit 1 <br /> This PAR compiles all past site assessment and remediation work as well as all <br /> groundwater monitoring data in a format that is in accordance with Regional Board site <br /> standards as defined by the Tri-Regional Board Guidelines for the Site Investigations at <br /> Petroleum Hydrocarbon-Contaminated Underground Storage Tank Sites (1992) WZI was <br /> retained in April 1996 to provide specific technical services for preparation of this report <br /> and to conduct limited groundwater monitoring under direction of Sebastiani personnel <br /> Prior to the WZI involvement in 1996, six different technical consultants and/or contractors <br /> were involved in conducting the work These consultants and/or contractors included <br /> Consultant/Contractor Dates Involved Activity <br /> Claude C Woods November 1988 UST Removal <br /> McLaren-Hart 1989 Site Assessment and Install Groundwater Monitoring <br /> Wells <br /> CEECON September 1993 Install Groundwater Treatment System <br /> WaterWork 1990-1996 Remediation Plan and Groundwater Treatment <br /> System operations <br /> Sebastiani 1994-1996 Groundwater Monitoring <br /> WZI Inc 1996-current Groundwater Monitoring and Problem Assessment <br /> Report Preparation <br /> The preparation of this PAR was conducted in accordance with direction from the San <br /> Joaquin County Public Health Service, Environmental Health Division County Public <br /> Health directed Sebastiani in November 1996 to determine if the site could be closed after <br /> 19150011 005 4 <br />