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�.• 2.0 SITE CONDITIONS AND USE OF LAND 'r 2.1 SITE DESCRIPTION The subject site is partially occupied by two warehouses. The warehouses are of metal frame ` and roof with limited brick facades and have concrete slabs-on-grade. Asphalt pavement access ways and parking lots surround the buildings with landscaped areas located on the west and north property boundaries. Surface inlet drains within the asphalt covered areas collect site surface water and direct it offsite. An electric transformer is located offsite, adjacent to the northeast corner of the warehouse that is located on the eastern property line. Two areas of environmental concern were noted onsite. An approximately 20 by 20 foot area within the asphalt pavement was outlined by cracks, possibly indicating subsidence of backfill soils of a possible former underground storage tanks (USTs)area (See Figure 3). The other onsite area of concern was a exterior storage area of ten 55-gallon drums (See Figure 3). An offsite environmental concern is a paint scaffolding storage yard, located southeast where spray painting operations were conducted at the time of our site �. reconnaissance (see Figure 2). The property slopes gently to the northwest. The site elevation is approximately 37 feet �— above mean sea level (msl). `-' 2.2 SURROUNDING PROPERTIES The subject site is bound by Industrial Park Drive on the north and South Main Street on the west. The surrounding adjacent properties include the various commercial and industrial properties including a Chevron service station to the west, storage units to the south, warehouses and distribution centers to the north, and continuation of the industrial park to the east (see Figure 2). t.. 2.3 SUBSURFACE SOIL CONDITIONS/SITE GEOLOGY �. The proposed ARCO facility is located within the northern portion of the San Joaquin Valley. The elevation of the site is approximately 37 feet above msl with a gentle surface gradient to the northwest. The subject site is situated on Holocene Dune Sand deposits overlying San Joaquin Valley fill sediments. Within the site vicinity, the valley fill sediments include Holocene-Pleistocene alluvium and river deposits characterized as the Modesto Formation (California Division of Mines and Geology (CDMG), 1990) and as the Victor Formation (California Department Lo of Water Resources (CDWR), 1967) extending to approximately 100 feet below ground 3N 413007-037-01 dec-96\armteca.eu 2-1 1.s