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Kraus-Anderson Realty Company Project BL-11-01014 March 18, 2011 Page 7 The fill soils encountered were variable in composition and consistency. In addition, information regarding the age, placement and compaction of the fill is not available. Due to the risk of detrimental settlement associated with such materials,we do not recommend using such materials for support of the proposed building. In addition,there is an existing structure on site which will need to be demolished and removed prior to construction. During excavation of fill soils,we recommend that all topsoil, building debris, utilities,foundations, etc. be removed from the proposed building footprint and oversize area. Typical excavation depths to remove the fill soils from the central portion of building area will range from approximately 1 to 4 feet below existing grades. However,where swamp deposits were encountered near the area of the east wing of the building area,excavation depths of up approximately 19 feet will be necessary prior to foundation construction. Following the removal of fill soils and swamp deposits, excavations should be backfilled to subgrade elevation with engineered fill material. The area of the proposed drive way and parking lot at this site is generally underlain by fill soils overlying swamp deposits. It appears that some compression of the swamp deposits in this area has occurred over time due to the weight of the fill soils. However,the placement of additional fill soils in these areas could result in further compression leading to pavement and utility settlement.We recommend that utilities be design to allow some movement and placement of the final bituminous wear course in parking and drive areas be delayed to allow for this settlement. Based upon the results of this exploration,we do not anticipate that groundwater will greatly effect construction at this site. However, isolated areas of perched water could be encountered in deeper excavations at this site.Sump pumps or localized methods of temporary dewatering should be suitable for control of any perched water encountered during construction. D.2. Building Subgrade Preparation D.2.a. Excavations We recommend that all vegetation,topsoil, existing fill, soft native clays, swamp deposited soils, and/or previous construction debris be removed from the building footprint and oversize area. In addition, some soil corrections of soft native clays should be anticipated below swamp deposits. Our anticipated excavation depths in relation to the anticipated FFE 968 feet MSL are shown on the following table. BRAUN INTERTEC