Coca-Cola Enterprises Inc. Special Warranty Deed (2)

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e e Maxim 4.2.3 Site Geology According to The Geological Atlas of Texas, Houston Sheet, revised in 1982, the site is mapped as the Beaumont Formation, a tluvio-deltaic Pleistocene deposit. The Beaumont is a heterogeneous formation, containing thick interbedded layer~ of clay, fine sand, and silt. Tlle clay fraction is primarily composed of montmorillonite, illite, kaolinite, and fine grained quartz. The clay present in the .formation has been consolidated by the process of desiccation. The sands and silts, which vary in compactness from loose to very dense, are composed of quartz, the feldspars, large particles of kaolinite, calcite, and occasionally hornblende. 4.2.4 Regional Groundwater Conditions The following information was obtained from various sources referenced in the appendices of this report., The public drinking water supply 'source for the Houston area is primarily supplied by the Chicot and Evangeline Aquifers and Lake Houston. ' , The three geohydrologic units that underlie Harris County are the Evangeline; the Chicot, and the Jasper Aquifers. In general, the groundwater gradient of these three aquifers is toward the southeast. The Evangeline Aquifer, composed of Goliad sand" and the Fleming Formation has been identified as Pliocene and Upper Miocene in age. This aquifer is the major sour~ of groundwater in the Houston district, however, in Galveston and southern Harris County,- it becomes saline and is not used. The top of this aquifer ranges in depth from 100 feet above mean sea level in extreme northwest Harris County to 600 feet below mean sea level in the southwest part or" the county. Maximum aquifer thickness is approximately 2,400 feet. The Chicot Aquifer (the youngest) includes all deposits from the land surfa~e to the top of the Evangeline Aquifer ~d has been defined as Pleistocene in age. It has been divided into an Upper unit and Lower unit. The Upper unit is typically encountered in southern Harris County, and generally is not present in the northern section of the county. It is not considered a primary source ,of groundwater in Harris County. The Lower Unit of the Chicot Aquifer is the main source of groundwater in Galve,ston and southern Harris County. Maximum ~ickness of the Chicot Aquifer is approximately 600 feet. The Jasper Aquifer is Miocene in age" and has been identified as distinct and separate from the Evangeline aquifer by the Burkeville confining layer. Only a few wells have been completed from the Jasper aquifer in. Harris County, and. therefore, local groundwater , withd':'8wals from this unit are not significant:. , ' ,In additiC?rl to the primary' aquifers, groundwater occasionally, occurs in shallow, discontinuous," or "perched" water-bearing units. Shallow groundwater is typically encountered at depths of less than '20 feet for the Houston area. These shallow water units are 'generally utiliz~ infrequently for local agricultural or domestic use in rural areas, but are the aquifers most likely to be impacted by releases from underground storage tank systems or surface spills. g:\doxlai&\1997\prqjecta\daIIaa\9740116\97I031 re.DI 4-4