SITE INFORMATION AND CORRESPONDENCE FILE 1

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�GRO Ms. Mary Meays February 8, 1995 (94-47-8620) Significant fugitive emissions from the stockpiled soil and excavation are not anticipated due to moisture content, soil type(mostly silt and clay), and predominant weather pattern (cool and wet) for the period the work will be performed. Similarly, dust should not present a problem. The plastic sheeting covering the soil pile will restrict vapor emissions and prevent water saturation. Additionally, a vapor extraction system employing up to three wells around the proposed excavation has been operating almost continuously since December 13, 1994. This should abate the propensity for fugitive emissions during UST removal. The excavation will be limited in areal extent by certain boundaries. To the north is the service station structure. West of the excavation is a pump island and canopy footings. The property lines both south and east define those respective boundaries (Figure 1). Soil samples collected during investigative activities in December 1994 suggest hydrocarbons may not extend to the northern, eastern, and southern boundaries. Because the extent of the excavation may encompass monitoring wells MW-1 and RW-1, these wells will be decommissioned prior to breaking ground. Appropriate permits will be procured prior to well decommissioning. The former UST excavation will be backfilled with imported fill material as well as native material generated during excavation of the new basin for the replacement UST (Figure 1). If the original excavation penetrates the groundwater, pea gravel will be used for fill until the base of the excavation is above the water table. Following the disposal of stockpiled soils and the receipt of all laboratory analytical results, Fugro will prepare a tank closure report for submittal to the involved agencies. The report will include waste disposal documentation. 94479620ASP - 2 -