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S ECOR <br /> Ms. Kasey Foley <br /> December 1, 2003 <br /> Page 2 <br /> Laboratory Analyses <br /> Soil samples designated for chemical analysis will be delivered under chain-of-custody to Severn <br /> Trent Laboratory(STL), a California state-certified laboratory located in Sacramento, California. The <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 /> SEC/OR I tern tional Incorporated <br /> QPpfESSio <br /> Clinton Harms Q�o�E•REA, eel <br /> Project Scientist <br /> � rn <br /> W N0.C 058399 <br /> cc <br /> iustty_lenkos , P.E. �� Exp1L �b <br /> Senior Engineer S N CMS- <br /> 4 OFC A1>F�Q <br /> ConocoPhillips/Tosco Marketing/work plans/Work Plan For Soil Compliance.doc <br />