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1) Obtain the necessary drilling permit from San Joaquin County PHS- <br /> EHD <br /> 2) Obtain any necessary access agreements and encroachment permits <br /> to conduct the drilling <br /> 3 ) Drill soil borings in 10 locations as shown on Figure 4 Following the <br /> drilling of these borings, ASE will discuss the findings from these <br /> borings with the San Joaquin County PHS-EHD to determine whether <br /> any additional CPTs are necessary prior to completing the report <br /> 4) At each location, an initial boring will be drilled to depth for the <br /> collection of lithologic and hydrogeologic information A second <br /> boring will then be drilled in each location for the collection of <br /> water and/or soil samples The total depth of each boring is yet t o <br /> be determined and will be discussed with the San Joaquin County <br /> PHS-EHD prior to drilling Data considered when determining the <br /> total depth of each boring will include the total depths and screened <br /> intervals of impacted domestic wells (to be determined in the scope <br /> of work outlined in section 1) and results of on-going CPT borings as <br /> the project progresses <br /> 5) Collect discrete groundwater samples from each unit of high <br /> permeability These samples will be collected using a SimalProbe or <br /> other suitable discrete depth groundwater sampler Groundwater <br /> samples will be contained in 40-m1 volatile organic analysis (VOA) <br /> vials, pre-preserved with hydrochloric acid, and sealed without <br /> headspace The samples will then be labeled with the boring <br /> location, depth sampled, project name, initials of the person <br /> collecting the samples and the date and time of the groundwater <br /> sampling The samples will be chilled on ice for transport to t h e <br /> laboratory under chain of custody <br /> 6 ) Analyze each groundwater sample described in task 5 at a state <br /> certified analytical laboratory for TPH-G, BTEX, seven oxygenates <br /> (including ethanol and methanol) and the lead scavengers 1,2-DCA <br /> and 1 ,2-dibromoethane (1,2-EDB) by EPA Method 8260 Laboratory <br /> turnaround time will be based on the particular importance of each <br /> individual sample in determining additional scope of work, such as <br /> whether an additional boring is necessary or whether deeper drilling <br /> is necessary <br /> Frank's One Stop Workplan — December 2000 <br /> -10- <br />