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Joe's Truck Stop Page 3 October 6, 1999 } i j; OBJECTIVE The objective of the investigation is to establish the severity, and extent if possible of a known groundwater impact at the subject property. It is also the objective of this investigation to determine the direction of groundwater gradient at the subject property. SCOPE OF WORK ( n Site Safetan y_ d Health Plan . P i W r, Prior to subsurface testing, as required by law, a Site Safety and Health an�will be prepared in order to insure that all workers and sub-contractors are aware of the risks and safety procedures associated with this Phase II Subsurface Site Assessment. Underground Service Alert As required by law, Underground Service Alert (USA) will be contacted to check the proposed probe locations for conflict with public utilities, such as gas or electrical lines. I Well Construction 'i Due to the depth to groundwater is at approximately nine feet bgs, the borings will be terminated at 20 feet bgs.' The upper five feet will consist of schedule 40 PVC solid casing. The lower 15 feet will consist of schedule 40 PVC slotted casing with (010 size I slot). 216 sand will be used around the slotted casing, a hydrated bentonite seal will be placed above the sandcolumn, and will be followed by neat cement. Wells will ._,.be flush,mounted with locking_caps.,y Well Development Wells will be developed by a licenced C-57 driller using a smeal rig. A surgirig pump will be used to purge the well and extract any fine grained material left in the monitoring well which might inhibit well development. This will be performed the day following the well installation. Groundwater Sampling ' ! Before initiating sampling activities, measurements of the depth to water and depth to bottom of the well casing will be made to determine the well volume for all wells. A IL �i i