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Stantec C nsulting-Corporation'.'. <br /> 3017 Kilgore Road Suite 100 <br /> w.► ^ Rancho Cordova CA 95670 <br /> Tel: (916)861-0400 <br /> Fax:(916)861-0430 <br /> Stantec <br /> II . <br /> D , <br /> : [ NE <br /> D <br /> January 6, 2010 <br /> JAN <br /> 081 2010 <br /> Ms. Lori Duncan <br /> San Joaquin County Environmental Health-Department ENVfRONMFNTNEALTH <br /> 600 East Main Street <br /> PER ANT/SERVICES, <br /> Stockton, California 95207 <br /> Reference: Response to SJCEHD Letter Dated June 8,-2009 <br /> Chevron 94275 and ARCO 2133 Commingled Plume <br /> 2905 and 2908 West Benjamin Holt Drive. <br /> Stockton, California 95207 <br /> Commingled Plume Account'No:.CP0034 <br /> v _ <br /> Dear Ms. Duncan: <br /> i <br /> Stantec Consulting Corporation (Stantec) has prepared this.letter on behalf of Atlantic Richfield Company <br /> (ARCO), a BP affiliated Company and Chevron Environmental Management Company (CEMC), in response <br /> to the San . Joaquin County Environmental Health Department (SJCEHD) letter dated June 8, 2009 <br /> (Attachment A). The SJCEHD's letter requested that the Responsible Party assess remedialtechnologies <br /> and implement active remediation of the significant contaminatiori that:lies in .the Y <br /> vicinit of well E-10 in order . <br /> p 9 <br /> to achieve Water Quality Objectives at the,site in a timely manner: <br /> An internal peer review meeting was .conducted ln'` November'2009 between Stantec BP and CEMC to <br /> discuss possibilities for active remediation in the vicinity of welf E-10 (Figure 1):, Well E-10 is located within <br /> close proximity to the fuel dispenser'islands and product piping as well as under the station's canopy. Drilling, . <br /> excavating or trenching in this area would be extremely difficult and health and safety could be compromised. <br /> Therefore, it was determined that active 'remediation is not feasible in this .location under the site's current <br /> configuration. <br /> If you have any questions or comments, please contact me at(91.6) 861-0400x270 <br /> Sincerely, <br /> STANTEC CONSULTING CORPORATION <br /> I <br /> Brian Westhoff <br /> Geologic Consultant <br /> Information, conclusions, and recommendations provided by Stantec in this document regarding the site have <br /> been prepared under the supervision of and reviewed by the licensed professional whose signature appears <br /> below. <br />