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� 1 <br /> W IN ZLERSZKELLY <br /> C D N S U L T I N G E N G I N E E R S / <br /> 1 � <br /> Ref 03-3009-08030 <br /> May 26, 2004 <br /> �,�, Sri <br /> ' Mr <br /> State of California Dept of General Services <br /> ' 707 3'd Street, Suite 4-430 <br /> West Sacramento,CA 95605 <br /> ' Re: Report of Monitoring Well Installation (MW-4) and Quarterly Groundwater <br /> Monitoring and Sampling, California Highway Patrol Facility,385 West Grant Line <br /> Road,Tracy,California, Site Code: 1904 <br /> J—at <br /> Dear Mr �`u" <br /> ' Winzler&Kelly Consulting Engineers(Winzler&Kelly)has prepared this report documenting the <br /> installation of a deep monitoring well (MW-4) on April 1, 2004 at the California Highway Patrol <br /> facility located at 385 West Grant Line Road, in Tracy, California (Figure 1) This report also <br /> presents the results of the subsequent groundwater monitoring and sampling event that was <br /> conducted at the site on April 7, 2004 <br /> Monitoring well MW-4 was installed downgradient of the former underground storage tank (UST) in <br /> ' order to define the vertical extent of contamination at the site The location of monitoring well MW- <br /> 4, as well as the other existing monitoring wells, is shown on Figure 2 All work was conducted in <br /> accordance with Winzler&Kelly's January 27, 2004 Workplan for Groundwater Contamination <br /> Investigation,which was approved by the San Joaquin County Environmental Health Department <br /> (SJCEHD) on February 25, 2004 (Appendix A) <br /> i' MONITORING WELL INSTALLATION AND RELATED FIELD ACTIVITIES <br /> A summary of the field activities related to the installation and development of monitoring well MW- <br /> 1 4, as well as the monitoring and sampling of wells MW-1 through MW-4 is provided below <br /> Field Activity Dates: April 1, 2004—Install MW-4 <br /> April 7, 2004—Develop MW-4 and sampling activities for MW-1 through <br /> MW-4 <br /> Winzler&Kelly Winzler&Kelly Field Geologist, Brian Wingard <br /> Personnel Present: Winzler&Kelly Field Technician,Brian Baccian <br /> Permits: Drilling Permit#425$ March 30 2004, SJCEHDd � <br /> Perms g , <br /> Drilling Contractor- Gregg Drilling and Testing, Inc of Martinez Calif <br /> E!V, 2004 <br /> i� 495 Tesconi Circle,Santa Rosa,CA 95401-4696 )�-`_ 11, <br /> tel 707 523 1010 fax 707 527 8679 )/Vj/' <br /> www w and-k com S <br />