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CUARTERLY GROUND WATER MONITORING REPORT <br /> 5491 F Street,Barna.California <br /> r <br /> 6 <br /> Work completed through August 1988 by ETS, included: <br /> o Drilling of one soil boring which was completed as groundwater monitoring <br /> well MW-1; <br /> o Collection of soil samples during drilling and ground water samples after <br /> well development; <br /> o Submittal of soil and groundwater samples for analytical testing; and <br /> o Preparation of an Environmental Preliminary Site Assessment report. <br /> Work completed through May 1989 by Delta included: <br /> o Drilling of two soil borings which were completed as groundwater <br /> monitoring wells MW-2 and MW-3; <br /> o Collection of soil samples during drilling and ground water samples after <br /> 1 well development; <br /> (� o Submittal of soil and groundwater samples for analytical testing; <br /> o Measurement and calculation of groundwater flow direction and hydraulic <br /> gradient; and <br /> o Preparation of a Preliminary Hydrogeologic Assessment Report. <br /> Work completed through August 1990 by NGA included: <br /> o Drilling of three soil borings which were completed as groundwater <br /> monitoring wells MW-4 through MW-6; <br /> o Collection of soil samples during drilling and ground water samples after <br /> well development; <br /> o Submittal of soil and groundwater samples for analytical testing; <br /> o Measurement and calculation of groundwater flow direction and hydraulic <br /> gradient; and <br /> o Preparation and submittal of a Problem Assessment Report utilizing the <br /> l analytical results of the groundwater sampling event of 6 July 1990. <br /> 4✓ <br /> 90-O99A.RFT 2- "" <br />