Laserfiche WebLink
Qwkgual74eluda Inc. Page 14 <br /> Valley Wholesale Drug Company <br /> Project No 989 2 <br /> November 8,2004 <br /> 1 <br /> 3.12 Reports and Information <br /> ' Unauthorized Release Formuarterl <br /> tU�, Quarterly Monitoring Reports and other correspondence <br /> are on file with SJCEHD and CRWQCB and are not included in this summary report <br /> ' Additional investigative and characterization reports related to the VWDC site include <br /> • Hunter Interim Report Covering Soil and Groundwater Investigation—September, 1995 <br /> • Hunter Interim Report Covering Results of Site Investigaion Placement of SoillWater <br /> Probes—September 1998 <br /> • Hunter Interim Report Covering Results of Site Investigation, Placement of SoillWater <br /> ' Probes &Groundwater Monitoring Results—October 2000 <br /> • GT1 Site Characterization, Monitoring Well Installation and 3rd Quarter 2002 <br /> Groundwater Monitoring Report—October 31,2002 <br /> ' • GTI Site Conceptual Model Report—December 17, 2003 <br /> 3.13 Rationale <br /> ' For the following reasons, the conditions at this site should not adversely impact water <br /> quality, public health, or beneficial use of this property <br /> Site Conditions <br /> • The two USTs and primary soil contamination source has been removed <br /> ' • There are no domestic, municipal or production wells within at least a 2000-foot <br /> radius for any residual contamination to impact <br /> ' • The soil is primarily a mixture of clays and silts The contamination will have a <br /> tendency to adsorb to the fine-grained material, thereby limiting migration <br /> • Portions of the site and adjoining properties not covered with buildings are covered <br /> ' with asphalt, thereby limiting vertical migration via filtration <br /> • Groundwater monitoring results show that the contaminants in the groundwater plume <br /> have reduced significantly over the history of the project <br /> ' • Groundwater velocity is <0 02 feet per year --- <br /> • Natural attenuation has been active at this site since contaminant release <br /> ' TPH-G Contamination <br /> • An estimated 56 2 gallons of residual TPH-G contatrunation remain in the soil and <br /> groundwater at the site with the vast majority of it tied up m the soil <br /> ' o Attenuation as well as soil and groundwater removal suggest the residual TPH-G <br /> contamination is likely less than the estimate <br /> ' • The July 15, 2004 groundwater-monitonng event reveals that two of the site's ten <br /> groundwater-monitoring wells indicated the presence of TPH-G <br /> 1 <br /> i <br />