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Geological reclwks Inc. <br /> 2741 River Road <br /> Modesto,California 95351 <br /> (209)538-6424/Fax#538-5852 <br /> 1 <br /> ' REPORT <br /> ' Groundwater Monitoring <br /> 3`a Quarter 2001 <br /> Valley Wholesale Drug Co., Inc. <br /> 1401 W. Fremont Street <br /> Stockton, CA <br /> ' <br /> Project No. 989.2 <br /> November 20, 2001 <br /> 1 <br /> EXECUTIVE SUMMARY <br /> ' <br /> This report summarizes the 3rd Quarter 2001 groundwater monitoring work that took place <br /> at Valley Wholesale Drug Company on September 27, 2001. <br /> ' The average groundwater elevation fell 0.37 foot from the June 2001 monitoring event. <br /> Groundwater flow was north-northwesterly with a slope of 0.005 ft/ft. <br /> Laboratory analysis of the groundwater samples collected during the monitoring event show <br /> the presence of moderate to low levels of BTEX and TPH-gasoline present in wells MW-1 <br /> and MW-4. A very low level of xylene was present in MW-3. MTBE was present in <br /> ' monitoring well MW-6. <br /> 1.0 SITE OBSERVATIONS <br /> ' Sierra Occupational Services Medical Clinic borders Valley Wholesale Drug Company to <br /> the west and Larson Marine to the east. Larson Marine is a boat sales business with a boat <br /> repair and maintenance facility on site. The Larson Marine property is elevated <br /> approximately two feet above Valley Wholesale Drug Company property. A 21-inch <br /> diameter storm drain runs between the two properties and empties into the main channel <br />