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i Sampling Methods: Soil lithology was logged using the Unified Soil Classification System and the Munsell Soil Color Charts Encountered lithology is described on the exploratory boring logs presented in Appendix B Soil samples from the GeoProbee borings were collected continuously and samples from the hollow- stem auger borings were collected at five-foot intervals for lithologic description Soil samples from all borings were collected at five-foot intervals for potential chemical analysis, and head-space analysis Soil samples were screened for the presence of organic vapors using a photo-ionization detector (PID) PID readings are recorded on the boring logs Number of Borings. Four GeoProbe soil borings (GP-3 through GP-6) and three the hollow-stem auger soil borings converted into groundwater monitoring wells (MW-1 through MW-3) Boring and well specifications are described in Table 1 and locations are shown on Figure 2 • Boring Depths 10 to 61 5 feet below grade (fbg) Groundwater Depths• Groundwater was not encountered in the GeoProbe® borings During drilling activities, groundwater was observed in MW-1 through MW-3 at approximately 48 to 49 fbg Blaine Tech Services, Inc (Blaine) of San Jose, California measured groundwater at depths ranging from 47 36 to 48 43 fbg on December 7, 1999 Sediment Lithology Lithology encountered while drilling the borings consisted of silt (ML) to depths of approximately 15 to 18 fbg, underlain by alternating layers of sand (SP) and silty sand (SM) with layers of silt (ML) to the total explored depth of 60 fbg (Appendix B) Soil Analyses Selected soil samples from borings GP-3 through GP-6 and MW-1 through MW-3 were analyzed for TPHg by EPA Method 8015 (modified), benzene, toluene, ethylbenzene, xylenes (BTEX) and MTBE by EPA Method 8020, and fuel 955 3