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Warren-Teed <br /> 12 January 1987 <br /> Page 2 <br /> I <br /> Method 8015). The laboratory report, ' date;d 12 December :1986, for l <br /> Tracy 11 is -enclosed and a summary of those results is :presented <br /> below. <br /> Soil Sample - Tracy 11 (8-foot depth) <br /> i <br /> Halogenated Volatile Organics .(solvents) <br /> Dichloromethane 11.0 ppb . <br /> Aromatic Volatile Organics (BTX) N .D. <br /> Polychlorinated Biphenyls (PCB's) 0: 13 ppb <br /> Total Petroleum _:Hydro-carbons N .D. <br /> N.D. Non-detectable <br /> On 17 December 1986, AEMC performed additional environmental <br /> services at .Arco station under the direction of - t-he District and <br /> Mr. Steve We;lge, Arco site engineer-. AEMC removed additional _ <br /> soil from the excavation and c.o'llected soil samples. The <br /> excavated soils were stock.pi. ed and covered with plastic tarping. <br /> Mr. William ;;Snavely of the District was present during 'these <br /> f activities . <br /> LAEMC collected two undisturbed soil samples from the floor of the <br /> excavation, :identi-fied as Tracy ;#2 (10.0 foot depth) and Tracy n3 <br /> (11.5 foot depth). In addition, two soil samples, identified as <br /> Tracy #4 and Tracy #5, were collected from the clean soil <br /> stockpiled during tank removal. Ail samples were delivered to <br /> Eureka Laboratories. AEMC requested the laboratory to --analyze <br /> L Tracy #3 for aromatic volatile organics (EPA Method 8020), <br /> halogenated ..volatile organics (EPA Method; 8010)', polychlorinated <br /> biphenyls (EPA Method 8080), and total petroleum hydrocarbons <br /> t (Modified EPA Method 8015). Samples Tracy #2, Tracy 04, and <br /> Tracy #5 were placed on hold. Eureka's analytical results, dated <br /> 22 December" 1986, are enclosed and a summary of those results <br /> follow. <br />