7431 EVERGREEN WAY TACO BELL 2018-01-01 MF Import

( GEOTECHNICAL ENGINEERING STUDY Taco Bell Corporation April 29, 1993 ( E-6140 Page 4 The geotechnical factor that will have the most impact on the project is the potential for differential settlement across the restaurant buiiding area. Base on the subsurface information obtainad during our site study and our discussion with the present property owner, it appears that as much as fourteen feet of ur�controlled backfill was placed at the proposed restaurant building Iocation. Therefore, in order to preclude excessive differential settlements from occurring, the following options are recommended for your consideration: • Relocate the proposed building to an area on the property where the entire buifding will be supported on competent native soil or structural fill outside of the zone of uncontrolled fiil or, • After removal of the soil stockpiled across the site, overexcavate the loose saturated soil from the zone of uncontrolled fill, (area whiere underground storage, tanks were removed and backfi��d), dewater the excavation, if required, then backfill the excavation with a ciean �tructural fill as described in tha Site Preparation and Grading section of this report. This will require an overexcavation of at least four feet below the bottom of tha foundation footings at the proposed building areo. This report has been prepared for spE�cific applicatian to this project only and in a manner consistent with that level of care and skill ordinarily er,ercisad by other members of the profession currently practicing under similar conditions in this araa for the exclusive use of Taco Bell Corparation and their representatives. No warranty is expressed or implied. It is recommended that this report, in its entirety, be included �n the project contract documents for the information of the contractor. :�: .� . :�� The site should be stripped and cleared of all foundations, concrete slabs, pavements, utility lines, soil stockpiles (approximately three to four feet across western twa-thirds section ofi property) all organic matter and any other deleterious material. Stripped material should not be mixed with any soils to be used as structural fill. It is critical that all subgrade soils disturbed during initia! clearing work be removod if unsuitabte for compaction. Following the stripping and ciearing procedures, (including removal of the loose saturated soil stockpiles across the western two-thirds section of the site), the foundation footing areas should be overexcavated to at least four feet helow footing bottoms, to four feet beyond footing perimeters. This will result in an overexcavation of five and one-half feet below final grades. Earth Consultants, Inc.