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SECTIO. SOIL AND GROUND WATER SAMPLING PLAT The objective of the soil and groundwater sampling plan developed for this tank removal activity is to assess the required extent of soil excavation, to identify and separate impacted soil from clean overburden material, and to properly classify impacted soil and ground water as required for disposal The methodologies that will be employed are described in detail in the paragraphs below, followed by a description of the sampling protocol that will be adhered to during all sampling events All soil and groundwater samples will be submitted to An/En Laboratory (Marina, California) for analysis Sampling Plan ERM will be responsible for the collection of all soil and groundwater samples during the course of the project Analysis will include total petroleum hydrocarbons (TPH) as gasoline using EPA Method 8015- Modified (8015M), TPH as diesel or motor oil using EPA Method 8015M (with silica-gel cleanup preparation to remove naturally occurring organic compounds), benzene, toluene, ethylbenzene, and xylenes (BTEX) and MTBE using EPA Method 8020, and total lead using EPA Method 7420 Stockpile samples for waste characterization will be analyzed for TPH as gasoline and diesel using EPA Method 8015M, BTEX using EPA Method 8020, as LUFT Metals using EPA Methods 6010 and 7000 Sampling and Classification of Excavated Soils ERM will field screen potentially impacted excavated soil with a photoionization detector (PID) during excavation Soils registering readings will be stockpiled separately and will be classified as impacted soils Soils not registering PTD readings will be stockpiled and classified as clean overburden material Following completion of the excavation activities, a four-point composite sample will be collected from, each of the impacted soil stockpiles for waste disposal profiling 4-1