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C�ealogfcalrechxacsln� Page 2 i Valley Wholesale Drug Company Protect No 989 2 November 8,2004 i In an attempt to further define the limits of soil and groundwater contamination three (3) ' GeoProbe borings were placed on the site on August 25, 1998 The results of the work are outlined in the Hunter report Interim Report Covering Results of Site Investigation Placement of SoillWater Probes—September 28, 1998 ' On August 15, 2000, three (3) additional groundwater-monitoring wells were installed at the site Details of the work are discussed in Hunter report Interim Report Covering Results of ' Site Investigation, Placement of SoillWater Probes & Groundwater Monitoring Results Valley Wholesale Drug Co —October, 2000 ' On October 5, 2001, VWDC received a directive from Jeffrey Wong, SJCEHD The letter required VWDC to define the extent of the contamination plume and submit a work plan to SJCEHD by November 20, 2001 Geological Technics Inc (GTI) requested an extension for ' the work plan submittal On November 5, 2001, Mr Wong granted the extension to December 5, 2001 ' The work plan was submitted on November 21, 2001 and was approved by Mr Jeffrey Wong in a letter dated February 27, 2002 During the third quarter of 2002 GTI installed one deep and three shallow monitoring wells at the VWDC site Soil samples were collected during the installation of the wells and the ' monitoring wells were developed 72 hours after installation The new wells were surveyed in accordance with AB2886 and placed on the existing groundwater monitoring routine ' On October 31, 2002, GTI submitted the Site Characterization — Monitoring Well Installation and 3rd Quarter Groundwater Monitoring Report discussing the installation of the new wells and characterize the site conditions The report recommended two additional ' quarters of monitoring and then considers the site for closure No response was given to the recommendations in this report ' On January 21, 2003, GTI prepared and submitted a Work Plan for Geophysical Analysis On February 17, 2003 GTI requested a response from SJCEHD In a letter dated March 8, 2003, Mr Wong approved the work plan On December 17, 2003, GTI prepared and submitted a Site Conceptual Model Report (SCM) ' again requesting that the site be considered for closure On February 16, 2004 GTI requested a response from SJCEHD on the recommendations in the SCM In a letter dated March 12, 2004 Mr Wong denied the request for closure and directed VWDC to submit a work plan to define the extent of the groundwater contamination i On March 29, 2004, GTI prepared and submitted a Work Plan for Additional Site Characterization In a letter dated April 26, 2004 Mr Wong approved the work plan The 1 i I '