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c7cotog ciat 7eC`1.nks Inc. <br /> ' 2741 River Road <br /> Modesto,California 95351 <br /> (209)538-6424/Fax#538-5852 <br /> ' REPORT <br /> ' Groundwater Monitoring <br /> 4" Quarter 2001 <br /> ' George's Service <br /> 1600 Durham Ferry Road <br /> ' Tracy, California <br /> Project No 425 2 <br /> ' January 25, 2002 <br /> EXECUTIVE SUMMARY <br /> This report summarizes the 4"' Quarter 2001 groundwater monitoring and testing event that <br /> was completed on December 3, 2001 The wells were re-surveyed in accordance the State <br /> Water Resources Control Board's (SWRCB) AB2886 requirements on December 21, 2001 <br /> ' The wells were also sounded on that date <br /> Groundwater gradients and bearings were calculated and are summarized as follows <br /> ' December 3, 2001- <br /> Water table 0 001 ft/ft at N48°E <br /> • Intermediate 0 0033 ft/ft at N6°W <br /> Decernber 21, 2001- <br /> o Water table 0 0011 ft/ft at N22°E <br /> i' ® Intennediate 0 0017 ft/ft at N72°E <br /> The analytical results from the December 3, 2001 monitoring event show that aromatic <br /> k1 hydrocarbon compounds (BTEX) and gasoline range petroleum hydrocarbons (TPH-G) are <br /> present in 4 of the 12 monitoring wells (MW-1, MW-2, MW-4, and MW-5) Three <br /> domestic water wells in the immediate area of the tanks were tested and none of the wells <br /> ' contained contaminant concentrations above the laboratory detection limits <br /> 1 <br />