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0 R <br /> 7-Eleven Store #14117 <br /> Work Plan for Interim Remediation <br /> April 19, 2004 <br /> Page 5 <br /> If significant increases of dissolved oxygen and corresponding decreases in levels of dissolved <br /> hydrocarbons in groundwater are detected in nearby wells, oxygen injection will be considered an <br /> appropriate remedial method for this site, and the interim remedial technique of periodic groundwater <br /> extraction will be suspended in favor of oxygen Injection <br /> A Corrective Action Plan will be submitted which will include summaries of all feasibility and pilot <br /> testing to date, locations of proposed remedial wells, and a site-specific remediation plan based on <br /> the results of this feasibility study and historical site data <br /> REPORTING AND SCHEDULE <br /> Total gallons purged, estimated hydrocarbon mass removal calculations, total oxygen injected, and <br /> dissolved oxygen measurements, in tabular form, will be included in the quarterly groundwater <br /> monitoring and sampling report, as well as field notes and tabulated amounts purged during each <br /> event <br /> SECOR will begin scheduling the extraction work and well installation activities as soon as the <br /> SJCEHD approves this work plan <br /> If you have any questions or comments regarding the contents of this work plan, please contact us at <br /> (916)861-0400 <br /> Sincerely, <br /> SECOR International Incorporated <br /> Scott Graham <br /> Associate Geologist <br /> Jaff Auchterlonie ,af D GFC <br /> Senior Geologist © <br /> G� <br /> M Gavan'Heinrich, R G aP40 7572 0 <br /> Associate Geologist <br /> CAt1FO�t� <br /> Attachments Figures <br /> Tables <br /> Attachment A Soil Boring Logs <br /> cc File 17-Eleven, Inc <br /> 117-Elevenl7-11 Stores1141171Workplans114117 WP for Interim Rernedration doc SECOR lntemational Incorporated <br />