TranSystems Corporation - LGM Construction

5.0 GENERAL SITE CONDITIONS
The following sections describe general site conditions, subsurface stratigraphy and
groundwater depth. Our descriptions and conclusions are based on information from
the field exploration conducted for this study.
5.1 SITE DESCRIPTION
5.1.1 Location and Topography
The project site is located within a Federal Express employee parking lot, approximately
200-feet north of the main Federal Express building at 1 Sally Ride Way at the Oakland
International Airport. The site area is relatively flat and is covered with asphalt concrete
pavement. The surrounding area is currently occupied by paved aircraft, maintenance
and delivery areas.
According to an as-built topographic map of the Federal Express Facility provided by
TranSystems Corporation (TranSystems), the ground surface elevation at the project
site lies at approximately Elevation +9 feet, mean sea level (msl). The ground surface
within the existing FedEx facility, including the project site area, is gently sloped to allow
for drainage.
5.1.2 Existing Asphalt Pavement
As noted above, the existing site area is paved with asphalt. At the locations of test
borings KB-1 & KB-2, the existing pavement section consisted of approximately 6
inches of asphalt over 8 inches of aggregate base.
5.2 STRATIGRAPHY
Based on the available geologic information and on the results of our field exploration,
the site soils can be divided into three general categories: 1) clayey gravel fill soils, 2)
hydraulically placed loose to dense, poorly graded sand fill, and 3) interlayered alluvium
of the San Antonio formation. The general material types, as encountered in our
borings, are described below. Refer to the boring logs for detailed soil descriptions.
94240/1(OAK8R061)/es Page 9 of 29 June 13, 2008
© 2008 Kleinfelder