Laserfiche WebLink
V <br /> Pa <br /> Geologual Tecluucs lac. . - ge 7. <br /> Additional Site Characterization Work Plan <br /> Project No.724.2 <br /> March 15,2005 <br /> determined. The contaminant distribution information will then be used in estimation of the <br /> contaminant mass. <br /> 3.2. Mass Estimation <br /> Mass estimate calculations will be performed to determine the mass of gasoline present in <br /> groundwater at this site. To accomplish this task the groundwater analytical data obtained <br /> from this investigation and historical groundwater monitoring will be used. GTI will divide <br /> up the -contaminated. zone into a. series.. of layers according to. geology/contaminant <br /> concentrations. 'A..computer generated contour will be-used 'to estimate the area of <br /> groundwater. that has been..impacted in each layer. The area is then multiplied by the <br /> thickness of the layer(s) to get the combined volume of, soil and water in.the.layers: The <br /> volume of groundwater is determined by multiplying the. porosity. of the soil times the <br /> calculated total volume. The contaminant load is then multiplied with this number to give <br /> the mass of contaminant in milligrams per .liter.. The contaminant mass in milligrams is then <br /> converted to kilograms. <br /> 4.0 SCHEDULE & REPORTING. <br /> • <br /> Geological Technics Inc. anticipates beginning fieldwork no.later than 30 days after-work <br /> plan approval, receipt of encroachment permits and upon issuance of the drilling permit. The <br /> information gathered during-this phase of work will be presented in a report that will include <br /> a summary.of the geology. Dr. Ray Kablanow, a registered professional geologist, will <br /> supervise the project. Copies of the report will be forwarded to both the appropriate County <br /> and State regulatory agencies (SJC/EHD and. CRWQCB-CVR). Groundwater monitoring <br /> will continue on a quarterly .basis. A report will be issued for each monitoring event and <br /> submitted to the County and State agencies. <br /> The proposed schedule for the site characterization work is.as follows: <br /> Task Description Completion Data <br /> ® Submit additional site characterization work plan March 2005 <br /> • Receive approval for,the work plan May 2005 <br /> Y ,Prepare budget/USTCFP.three bid process : .June 2005 - <br /> e Advance CPT borings July 2005 <br /> ® Prepare site characterization report/update site conceptual model September 2006 <br />