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File No. 20-3978-01.W U KLEINFELDER January 22, 1997 ATTACHMENT A SOIL SAMPLING AND ANALYSIS UNDERGROUND STRUCTURES AND BEET SEED WAREHOUSE (PHASE I ESA RECOMMENDATION NUMBER 13 AND 2) FORMER SPRECKELS SUGAR PLANT NO. 2 18800 S. SPRECKELS ROAD MANTECA, CALIFORNIA 20-3978-01.W 13 January 22, 1997 INTRODUCTION Kleinfelder has conducted a Phase 1 Environmental Site Assessment (ESA) of the property known as the Former Spreckels Sugar Plant in Manteca, California (Kleinfelder Job No. 20-3978-01.P01, dated October 18, 1996). Plate I shows the location of the Spreckels property. Underground structures are or were historically present on site. These structures include a former fuel or steam line (addressed in proposal 20-3978-01.WR7), truck and railroad scales, below slab factory drains, the former underground beet flume and the drainage canal which formerly transported condenser water off-site. According to recent information provided by Mr. Frank Nelson of Spreckels Development Company, the truck scales at the Spreckels Manteca Factory are mechanical and do not utilize hydraulic fluid. Additionally, Mr. Nelson indicated that he believed that the railroad scales are also mechanical because of their age and because of the lack of a power supply for a hydraulic pump for the railroad scales. Therefore, the truck and railroad scales have been eliminated from the scope of work for this proposal. The below slab factory drains, and the water lines transporting wastewater from the factory to the waste water ponds are planned for only limited evaluation at this time. The drains and waste water lines are largely inaccessible due to their location beneath the existing factory structures. However, the main factory building has a unique foundation design in use. That foundation generally consist of approximately a 1-foot thick concrete slab held up by piers ranging in height from 4 to 8 feet which are underlain by a slab which is approximately 1 to 2 feet in thickness. The bottom slab is sloped to the south end of the building to accommodate large equipment. Where the piers do not exist, the interstices of the two slabs are filled with native sandy soils. It is unlikely that significant concentrations of contaminants would be found in the soils beneath the waste water line 20-3978-01.W131207PE030 Page 1 of 6 01997. Kleinfelder,Inc.