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Kennedy/Jenks Consultants • Delhi Loamy Sand — The first 5 feet of the Delhi soil type changes from grayish brown and light brownish gray loamy sand to grayish brown loamy sand and then to pale brown sand as the depth increases to 5 feet bgs. The permeability rate ranges from 6.0 to 20 inches per hour. • Veritas Fine Sandy Loam —The first 5 feet of the Veritas soil type changes from grayish brown fine sandy loam to pale brown and light brownish gray fine sandy loam as the depth increases to 5 feet bgs. The permeability rate ranges from 2.0 to 6.0 inches per hour. Logs of borings drilled by Twining (Twining 2000) indicate that soils on the Site are sandy and silty with a textural change occurring from 11 to 20 feet bgs. The majority of LAA basins 1, 2, 5 and 6, and the northern half of basin 3 may be located in soils mapped as Delhi soils. The majority of LAA basins 4 and 7, as well as the southern half of basin 3 were estimated to be in Veritas soils. These preliminary soil type delineations were based on the presence of cemented material encountered between 7 and 12 feet bgs in boring logs. In December 2003, soils from four different boring locations within the LAA were characterized as part of an exploratory drilling operation to collect data for the Groundwater Monitoring Well and Lysimeter Installation Report (Kennedy/Jenks 2003d). Soil samples were collected to depths ranging from approximately 17 feet to 28 feet. In addition, two soil profiles near basin lysimeters were characterized to depths of approximately 70 inches bgs. Textures in all sampled locations and at all depths were found to range from sandy loams to sands, with clay percentages ranging from 2 percent to 17 percent. All soils were subject to chemical analysis and found to have sandy loam textures to depths of approximately 60 inches bgs. From these data, the available water holding capacity for the top 60 inches of soils was calculated to be approximately 8.1 inches. A layer of hardpan material was encountered in some of the borings. The hardpan was a 2- to 3-feet thick cemented sand or silty sand, typically reddish brown in color except at Boring KB-3, where the hardpan had distinct black and gray mottling. The layer is very dense, and the fragments are brittle and have many small pores. The top of the hardpan was encountered at a depth of 6 to 7 feet bgs in Boring KB-1, monitoring well MW-6, and monitoring well MW-7 (drilled from the top of the berm surrounding the LAA); in the soil borings located in the basins, it was found at depths of about 5 to 7 feet bgs (Installation Report, Kennedy/Jenks, 2003d). Other cemented layers were encountered while drilling Monitoring Well MW-6 at 25 feet bgs, 35 feet bgs, 40 to 44 feet bgs, 45 feet bgs, and 55 feet bgs. Cemented and brittle material was also encountered between 35 and 38 feet bgs in MW-7. Soil borings located in the LAA showed that cemented material was not encountered deeper than the 5- to 7-foot depth, however silty material was encountered at 21 feet bgs and 17 feet bgs in Boring KB-3 and KB-5, respectively. 1.7 Water Supply Water at the Site is supplied by three production wells, one well designated for fire-fighting and two domestic water wells. Water usage is currently not metered at the Facility. Groundwater Investigation Work Plan Page 9 Barrel Ten Quarter Circle Winery, Esca/on, California g:Gs-groupladminl ob1031030118.08_barrelten109-reportslgw invest wrk phtextdoc