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%vine-Fricke-Recon ENGINEERS.NYDROGEOLOGISTS&APPLIED SCIENTISTS Approximately two weeks will be required to complete the CPT boring and groundwater monitoring well installation. We anticipate conducting this field work in October 1998. Before field work begins, any buried utilities that are present in the parking lot in the vicinity of the proposed CPT boring and groundwater monitoring well locations will be located and marked on the asphalt to prevent any contact with the utilities during drilling. The work space will be approximately 30 feet by 50 feet, covering an area of approximately 150 square feet. The work space will be cordoned off during drilling to prohibit access by unauthorized personnel. Field equipment will consist of a drilling rig and support vehicles. At the end of each work shift, any waste materials generated during the field activities will be removed and the work area will be cleaned. When drilling is completed, the CPT boring will be backfilled with a cement grout. The tops of the groundwater monitoring wells will be below the existing parking lot surface. Traffic-rated well boxes, approximately 14 inches in diameter, will be installed to protect the newly installed wells. The well boxes will be flush with the existing parking lot surface and will not interfere with parking or other operations on your property. Locks will be installed on the wells to prevent unauthorized access. Upon completion of this field world, the asphalt surface surrounding the CPT boring and monitoring wells will be restored to its original condition. It is unclear at this time how long the groundwater monitoring wells will need to remain on your property. We anticipate that the time period could be on the order of several years. Once the CPT boring and groundwater monitoring well installations are complete, the groundwater monitoring wells will need to be accessed for sampling once each calendar quarter, during the months of February, May, August, and November. Quarterly groundwater sampling events would require approximately three hours to complete at your location and would be conducted during the day. A temporary work area of approximately 20 feet by 20 feet around the well boxes would be needed to access the groundwater monitoring wells to conduct the groundwater sampling activities. We will coordinate the schedule for this field activity with you well in advance of each groundwater sampling event. Before LFR can perform this work, we must obtain well permits from the SIC PHS/EHD. To issue the permit, the SJC PHS/EHD must have written permission from you to conduct this work. Therefore, please sign the acknowledgement in the space indicated, transmit the signed document to me via facsimile, and return the original to mein the enclosed, self-addressed postage paid envelope. As mentioned, we currently anticipate conducting this field work in October 1998. We will provide you with a specific field schedule for the work once we obtain the required permit. Ltr-Access-Kawai-04111:b1h 2