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ETTL ER RYAN <br /> INC. <br /> MONITORING WELL INSTALLATION REPORT <br /> for r <br /> Tosco (Former BP) Service Station No 11192 rT i <br /> 1403 Country Club Blvd <br /> 4 � <br /> Stockton, California <br /> 14024505-2 <br /> f <br /> C-0 - <br /> 1.0 INTRODUCTION <br /> At the request of Tosco Marketing Company (Tosco), Gettler-Ryan Inc (GR), has prepared this <br /> report presenting the observations associated with the installation of three off-site monitoring wells <br /> and one on-site monitoring well at the subject site The purpose of this investigation was to further <br /> evaluate the groundwater and soil conditions beneath the subject site This work was originally <br /> proposed in GR Report No 140245 05-1, Work Plan for Monitoring Well Installation, dated July 6, <br /> 2001 The scope of work was developed based on recommendations presented in GR's report <br /> 140245 03-3 and approved by the San Joaquin County Public Health Services, Environmental <br /> Health Services (PHS-EHD) in a letter dated July 16, 2001 <br /> The scope of work included updating the site safety plan, obtaining the required well installation- <br /> and <br /> nstallationand encroachment permits, installing four groundwater monitoring wells (three off-site and one on- <br /> site), surveying wellhead elevations horizontal coordinates of the new wells, developing and <br /> sampling the wells, collecting and submitting selected soil and groundwater samples for chermcal <br /> analysis, arranging for Tosco's contractor to dispose of the waste materials and, preparing a report <br /> summarizing the analaytical results presenting the observations associated with the well <br /> installation <br /> 2.0 SITE DESCRIPTION <br /> 2.1 General <br /> The site is located on the northwest corner of the intersection of Country Club Boulevard and <br /> Pershing Avenue in Stockton, California (Figure 1) The site is currently an operating Tosco (76) <br /> Service Station Aboveground facilities include a station building, a car wash, auto service and oil <br /> change buildings (operated by others) and four dispenser islands Underground facilities include <br /> two gasoline underground storage tanks (USTs), one waste oil UST (operated by others) and six <br /> 6747 Sierra Court , Suite J - Dublin , California 94568 - ( 925 ) 551 - 7555 <br />