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l <br />•� S E C O R <br />Ms. Kasey Foley <br />December 1, 2003 <br />Page 2 <br />samples will be analyzed for total petroleum hydrocarbons characterized as gasoline (TPHg), <br />benzene, toluene, ethylbenzene, total xylenes (BTEX), methyl -t -butyl ether (MTBE), ethyl tertiary <br />butyl ether (ETBE), di -isopropyl ether (DIPE), tertiary amyl methyl ether (TAME), tertiary butanol <br />(TBA), and ethanol by Environmental Protection Agency (EPA) Method 8260B. <br />Management of Excavated Soil, Limited Over -Excavation, and Aeration <br />If soils impacted with hydrocarbons are encountered, limited over -excavation may be performed. <br />Over -excavation, if performed, will be limited to approximately 50 cubic yards of soil. The area of <br />possible over -excavation is shown as a dotted line on Figure 2. Over -excavation will be limited to <br />soils above current groundwater levels. <br />Any soil waste generated during vent line replacement activities will be placed on and covered with <br />plastic sheeting (visqueen). Four soil samples will be collected from the stockpile in brass sleeves <br />using Teflon° sheets and plastic end caps. These soil samples will be labeled and placed in a cooler <br />on ice for transport to STL. The laboratory will combine the four soil samples into one composite <br />sample to analyze for concentrations of: TPHg, BTEX, and MTBE by EPA Method 8260B and total <br />lead by EPA Method 6010. Chain -of -custody procedures will be followed at all times. <br />Upon analysis of stockpile samples, a ConocoPhillips waste hauler will transport the hydrocarbon - <br />impacted soil to a state certified landfill. <br />Report Preparation <br />A report of the soil sample activities and results will be prepared and submitted to SJCEHD. The <br />report will be reviewed and signed by a Registered Geologist or Engineer. <br />Schedule <br />ConocoPhillips is currently schedule to initiate dispenser upgrade activities in approximately one <br />week. A report will be issued documenting soil sampling activities approximately 4 weeks following <br />completion of work. <br />If you have any questions regarding this work plan, please contact our office at your convenience. <br />SECOR Int rnational Incorporated <br />oQPOFESS/6 <br />141/1 <br />Ca 2 y 1 <br />LU NO.0 058399 m <br /># Erp� \�OF C 4�iF <br />Clinton Harms <br />Project Scientist <br />Rusty Benkos , P.E. <br />Senior Engineer <br />cc: Mrs. Liz Sewell, ConocoPhillips <br />Mr. Bill Borgh, ConocoPhillips <br />ConocoPhillips/Tosco Marketing/work plans/Work Plan For Soil Compliance.doc <br />