Laserfiche WebLink
3.0 MONITORING RESULTS SUMMARY <br /> 3.1 Groundwater Physical Characteristics and Gradient-Contours <br /> t <br /> Table 1 presents a summary of the groundwater physical characteristics and water level <br /> measurements collected at each well during the March 17, 1995 monitoring event <br />' TABLE 1 <br /> Field Monitoring Data <br />' Well pH Temperature Electrical Reference Elevation' Depth to Wafer March 1995 <br /> ID (units) (0 F) Conduchvity Top of Casing From Reference Water Elevation' <br /> (umhos) (feet) (feet) (feet) <br /> MW-1 737 68 2 591 2093 4379 -2286 <br /> MW-2 722 660 570 2134 4413 t-2279MW-3 7 13 65 2 596 21 07 4372 <br /> Notes <br />' 'Elevations are gJven in feet relative to mean sea level (MSL) <br /> Groundwater elevations have increased an average of 4 17 feet since the last date when <br /> measurements were made (August 19, 1994) This increase in groundwater elevation reflects <br /> the recent, unusually high winter season rainfall in the San Joaquin Valley region <br />' The groundwater elevations were used to produce a contour map showing the groundwater <br /> surface at the facility relative to mean sea level (Figure 3) From the data, WESTON has <br />' calculated a horizontal gradient for the groundwater surface The average horizontal gradient <br /> at the site is 3 0 x 10-3 feet/foot with groundwater flow toward the north by northeast. In <br /> comparison to data collected in August, 1994, the contour map shows the hydraulic gradient has <br />' decreased slightly from 4 0 to 3 0 x 10'3 ft/ft and the flow direction has rotated from slightly <br /> west of north to slightly east of north. <br />' 3.2 Analytical_Results <br />' All groundwater samples were analyzed for BTEX by EPA Method 8020 and for TPH-D by <br /> EPA Method 8015m The analytical results are summarized in Table 2 while the complete <br /> analytical report is presented in Appendix B <br />' LXPR0JECTSLSANJ0Q%TMAD-1ST QTR 4- 21 April 1995 <br />