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t • • ' r <br /> Mr.Rusty Benkosky,Stantec Consulting Corporation March 23,2009 <br /> Well Installation Data Package Project No.E443-01 <br /> Former ARCO Station No.443,Stockton,CA <br /> Page 5 <br /> Date: February 27, 2009 <br /> On-Site Supplier Representative: Allan Dudding <br /> Scope of Work Performed: Developed well MW-8 by surging and bailing using a Smeal <br /> rig, then pumping ten casing volumes. Also used Smeal rig to re-develop monitoring <br /> well MW-1D by surging and bailing. <br /> Variations from Work Scope: None noted <br /> Unusual Field Conditions: None noted <br /> Chemical Analysis: Soil samples were sent to Calscience Environmental Laboratories for <br /> chemical analysis. <br /> Waste Disposal: Drilling-derived waste material (contained in a roll-off bin) was <br /> removed from the site for disposal by Belshire Environmental Services on March 2 and 6, <br /> 2009. Water and solid material from the mud-rotary drilling were placed in drums at the <br /> site. Water produced during well development activities was pumped into drums. The <br /> drums were removed from the site by Belshire Environmental Services on March 6, <br /> 2009. <br /> Survey: Locations and elevations of newly installed monitoring wells will be surveyed to <br /> the Geotracker standard by Wood Rodgers, Inc. (PLS 7944); the survey data will be <br /> forwarded to the Scoping contractor. <br /> Well Sampling: The newly installed wells will be added to the regular monitoring and <br /> sampling schedule. <br /> Installation of off-site monitoring wells MW-6 and MW-7 will be completed after access <br /> agreements have been received. These activities will be reported in a separate document. <br /> This submittal presents the tabulation of data associated with the installation of two <br /> on-site monitoring wells (MW-5 and MW-8). The attachments include field data sheets, <br /> boring logs, chain of custody records, a site plan, well installation permits, and DWR <br /> well completion forms. The information is being provided to BP-ARCO's Scoping <br /> supplier for use in preparing a report for regulatory submittal. This submittal is limited to <br /> presentation of collected data and does not include data interpretation or conclusions or <br /> recommendations. <br /> I <br /> fI <br /> I <br /> KABP-ARCO Execute\443\2009 Data packagesWmo 443—Well Installation—Data Package.doc <br /> I <br />