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In KLEINEELDER <br /> 5 RESULTS <br /> 5.1 Groundwater Elevations <br /> Depth-to-water from the three monitoring wells ranged from 34 95 to 36 44 feet on April <br /> 1 4, 1994 These measurements were subtracted from the surveyed top of casing elevations <br /> (relative to an established bench mark) to obtain a relative groundwater elevation for each <br /> well (Table 3) The groundwater elevations were within a total range of 2 54 feet (29 31 <br /> to 31 85 feet) A groundwater gradient and direction were calculated using the relative <br /> groundwater elevations The groundwater flow direction was estimated to be to the east <br /> northeast at a shallow gradient of 0 0073 ft/ft <br /> 52 Analytical Results <br /> Twelve (12) soil samples and two (2) groundwater samples were submitted under chain-of- <br /> custody procedures to State of California certified laboratories to provide a quantitative <br /> assessment of petroleum hydrocarbons, present in soil and groundwater at the site The <br /> laboratory used is California Department of Toxic Substances Control (DTSC) certified for <br /> the requested analyses The soil and water samples selected for analysis were based on PID <br /> readings, field observations, and the objectives of the work scope Analytical results for the <br /> soil and water samples are summarized on Tables 1 and 2 The laboratory data sheets and <br /> chain-of-custody form are included in Appendix E <br /> 5.2.1 Soil Samples <br /> Twelve (12) soil samples obtained from our borings pond were analyzed to determine the <br /> presence and concentration of the following <br /> • TPH extractable by EPA Method 3550 (kerosene range) <br /> • TPH purgeable by EPA Method 5030 (gasoline range) <br /> • BTEX by EPA Method 8020 <br /> 0 TRPH by EPA Method 418 1 <br /> 5.1.2 Groundwater Samples <br /> All three (3) groundwater samples obtained from our groundwater morutoring wells were <br /> analyzed to determine the presence and concentration of the following <br /> 9 TPH extractable by EPA Method 3550 (kerosene range) <br /> • TPH purgeable by EPA Method 5030 (gasoline range) <br /> « BTEX by EPA Method 8020 <br /> • TRPH by EPA Method 418 1 <br /> ETH and IVC/94 Page 8 of Il <br /> Copyright 1994 Kleinfelder Inc <br />