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was collected in three 40-m1 EPA vials and one Miter amber bottle. The samples were then <br />' placed in a chilled container and transported under chain-of-custody procedure to Western <br /> Environmental Science & Technology (WEST) in Davis, California <br />' Each water sample was analyzed for total petroleum hydrocarbons (TPH as gasoline and <br /> diesel) and BTE&X in accordance with EPA methods 8015m and 602, respectively <br /> 1 <br />' TABLE 1 <br /> RELATIVE GROUNDWATER ELEVATIONS <br /> Bill Stewart's Beacon <br />' 515 West 11th Street, Tracy, California <br /> Relative Groundwater <br /> Relative Depth to Groundwater Elevation <br />' Well No Casing 6/94 9/94 6194 9194 <br /> Elevation <br /> MW-1 4971 1150 1260 3821 3711 <br /> MW-2 4840 1011 1121 3829 3719 <br />' MW-3 4874 1025 1134 3849 3740 <br /> MW-4 4694 896 1008 37 98 3686 <br /> •AH measurements m feet <br />' 4.0 FINDINGS <br />' 4.1 Groundwater Elevation and Gradient <br /> The elevation of groundwater in each well was calculated by subtracting the groundwater <br />' depth from the surveyed relative casing elevation (Table 1) The depth to groundwater at <br /> the site ranges from 10 08 to 12 60 feet Relative groundwater elevation at the site has <br /> decreased approximately 11 feet since the June 1994 monitoring This decrease is consistent <br />' with seasonal variations in groundwater depth in the area <br /> The flow direction continues to be north-northwest, the gradient steepens from <br /> approximately 0 0027 ft/ft at the south end of the site to approximately 0 0049 ft/ft north of <br /> the site (Figure 3). The gradient and flow direction are very similar to previous <br /> measurements <br /> I <br /> Geologwai Audit Semces. Ina <br /> STEWART'S BEACON QRS/661 SM 94 6 <br /> 1 <br /> 7 1 <br />