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y a sir <br /> 3 <br /> P VU IMP I <br /> 0,MAR <br /> ' 2.5 Tables summarizing preliminary soil data: <br /> Concentration (ppb) <br /> Sample T X TPH(g) TPH(d) <br /> -------------------------------------------------------------i <br /> Tank Pit: <br /> #1 ND ND 18 ND 65000 <br /> -x ND = Not Detected <br /> 37 <br /> i <br /> 2.6 Estimates of liquid quantity and composition leaked: <br /> ki No estimate of liquid quantity can be made with existing <br /> information. The constituents detected in soil samples are <br /> ' derived from diesel. <br /> 2.7 Topography, geology, surface water, depth to groundwater: <br /> The site is situated on level terrain comprised of <br /> Quaternary-Recent alluvial sediments. Base on fie:.d <br /> in_spectiDn during tank removal, the groundwater at the site <br /> is known to be less than ten feet below grade. The project <br /> site is bounded on, the south and west sides by the San <br /> Joaquin River. Groundwater flow is expected to be towards <br /> the river although seasonal reversals could occur. <br /> } 2.8 Proximity of private, municipal and irrigation wells: <br /> Data on wells within one mile of the project site provided <br /> "- by the Department of Water Resources (DWR) are platted on <br /> Figure 4. <br /> 2.9 Locations of nearby septic tanks and underground utilities: <br /> The waste water treatment. plant is part of . the municipal" <br /> sewer system and as such does not have septic tanks:'` <br /> Underground utilities in the vicinity of the tank site are <br /> plotted an Figure 3. <br /> 3.0 PROPOSED WORKPLAN <br /> To assess the potential contribution of the leaked diesel <br /> product at the waste water treatment facility to groundwater <br /> contamination, WaterWork proposes to drill and sample four <br /> groundwater monitoring wells. Ore monitoring well adjacent <br /> W to the leak point and three wells to define the areal <br /> extent, two down gradient and one upgradient from the <br /> i c <br /> E , <br /> 2 <br /> r, <br /> 11 Mum— P <br />