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v <br /> SCOPE OF WORK <br /> REGULATORY TECHNICAL ASSISTANCE,DISPOSAL OF CONTAINERIZED WASTE, <br /> MONITORING WELL ELEVATION SURVEY,SENSITIVE RECEPTOR SURVEY,AND <br /> QUARTERLY GROUNDWATER MONITORING <br /> Prepared for <br /> Boyett Petroleum <br /> P.O.Box 576277 <br /> Modesto, CA 95357 <br /> CET Project#3761P <br /> September 26,2002 <br /> This scope of work is for consulting services to include: regulatory technical assistance, disposal of <br /> containerized waste, monitoring well elevation survey, sensitive receptor survey, and quarterly groundwater <br /> monitoring for the Boyett Petroleum retail fuel facility located at 419 South Main Street in Manteca, <br /> California. This scope of work is provided in response to recent conversations between Messrs. Todd Hafner of <br /> Condor and Jeffrey Wong and Nuel Henderson of the San Joaquin County Public Health Services <br /> Environmental Health Division (SJCPHSEHD). The purpose of the project is to conduct corrective action to <br /> lead to eventual site closure, and to address requests from Mr. Wong of the SJCPHSEHD regarding the site. <br /> SCOPE OF WORK <br /> TASK 1 Condor will provide regulatory technical assistance by preparing and submitting a pre- <br /> approval request and reimbursement request to the underground storage tank cleanup <br /> fund. <br /> TASK 2 Condor will assist Boyett Petroleum in removing the containerized waste currently <br /> stored at the site that was generated by others. <br /> TASK 3 Condor will survey the nine groundwater monitoring wells to meet the requirements of <br /> California Assembly Bill 2886. The wells will be surveyed using conventional <br /> methods, GPS, or a combination of both. The location of the wells will be determined <br /> to a minimum horizontal accuracy of one foot and a minimum vertical accuracy of <br /> 0.01 foot. The re-survey of the wells will be useful in rectifying the issue of variable <br /> groundwater gradient directions reported for the site and will be beneficial for <br /> evaluating the lateral and vertical extent of the contaminant plume. <br /> TASK 4 Condor will conduct a sensitive receptor survey within a 2,000-foot radius of the site. <br /> Identification of nearby sensitive receptors is important due to the highly mobile <br /> nature of MTBE in groundwater and because the highest concentrations of MTBE at <br /> the site are located along the northern border of the site. <br /> TASK 5 Condor will conduct quarterly groundwater monitoring at the site as required by the <br /> SJCEHD. According to the SJCEHD, the last quarterly monitoring report submitted <br /> for the site is for the fourth quarter of 2001. The quarterly groundwater monitoring <br /> schedule established for the site indicated the monitoring wells have been sampled <br /> during the last month of the quarter.Condor will maintain this schedule by conducting <br /> the third quarter 2002 sampling event in September. <br /> PA3761P Boyett Manteca\UST Fund\Pre-Approval\Scope of Work.doc <br /> \I <br /> 4rS <br /> i� CONDOR <br />