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� Mfr k <br /> ,+ <br /> E Q <br /> FUGRO WEST, INC. 4' 2� P'J I I-8 16 <br /> - ---- <br /> February 17, 1995 1050 Melody Lane,suite 160 <br /> Fugro Project No. 94-47-8620 Roseville,California 95678 <br /> TO (916)782-2110 <br /> FAX; (916)786-7830 <br /> Ms. Mary Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> Post Office Box No 2009 <br /> 445 N. San Joaquin Street <br /> Stockton, California 95201-2009 <br /> Subject: Proposal to Reduce Vapor Monitoring Frequency <br /> Shell Service Station (WIC No. 204-7524-3505) <br /> 2575 Country Club Boulevard <br /> Stockton, California <br /> SJCPHS/EHD Site Code: 1223 <br /> Dear Ms. Meays: <br /> Fugro West, Inc. (Fugro), on behalf of Shell Oil Company, has been conducting utility vapor <br /> monitoring and mitigation activities at the subject site since December 12, 1994. These activities <br /> are performed in response to a release of gasoline from an underground storage tank on the site. <br /> An interim soil vapor extraction and emission control system is currently in operation. <br /> Handbailing of product (if any) from monitoring wells MW-1, MW-5, and RW-1 continues to <br /> be performed by Fugro personnel almost daily. <br /> Figure 1 shows locations of the utilities currently monitored with a field instrument. Table 1 <br /> presents the monitoring results. <br /> Based on results presented in Table 1, we request approval to continue vapor monitoring of the <br /> utilities twice a week for one month. The vapor monitoring frequency may be revised further <br /> upon your approval. <br /> We appreciate your interest in the site. Fugro and Shell will continue to update you on the <br /> progress of this project. If you have any questions or comments, please contact us at (916) 782- <br /> 2110. Thank you for your assistance. 1 <br /> Sincerely, <br /> Sudhakar Talanki <br /> Project Engineer <br /> Attachments <br /> cc: E. Thayer, Central Valley Regional Water Quality Control Board <br /> D. T. Kirk, Shell Oil Company <br /> 94478620.BLT A member of the Fugro group of companies with offices throughout the world <br />