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elevations decreased an average of eight feet , to approximately 13 feet to 14 feet below sea level This decrease may be attributed to both sampling time (summer vs winter) as well as an effect of the continuing drought period Ground water elevations increased approximately 3/4 foot since the last depth-to-water measurements on June 29 , 1995 The recharge is effecting the current ground water elevations across the site with a similar hydraulic gradient, from the slope of 0 002 from MW1 to MW7 during the June 29, 1995 gauging to a slope of 0 002 ft/ft from MW1 to MW7 The flow direction is to the south southwest from MW1 to MW3 , to south southwest from MW3 to MW7, see Figure 4D The hydraulic gradient across the site is relatively stable, indicating a condition where the inflow and outflow of water to the local aquifer have reached some kind of equilibrium SITE INVESTIGATION Ground water sampling was conducted on September 28 , 1995 in compliance with the quarterly monitoring requirements for this site. The various ground water parameters were determined by 1) recording depth to water (by use of a resistivity meter) at each monitor well, 2) purging and containment of ground water from the wells, 3) collecting water samples from the wells, 4) submitting these water samples to a State Certified Analytical testing . laboratory via established "chain of custody" procedures I The water samples were analyzed for Total Fuel Hydrocarbons (TFH) as gasoline and Volatile Aromatic Hydrocarbons (BTEX) using EPA Methods 5030 and 602 , respectively Laboratory detection limits are as follows TFH is 0 05 mg/L and BTEX is 0 5 Ag/L and 2µg/L for xylenes Methods and Procedures The ground water was sampled in eight monitoring wells (MW1 through 8) by a Western Geo-Engineers (WEGE) geologist working directly under the supervision of California Registered Geologist #3037 The WEGE geologist measured the depth to ground water using a resistance probe A ground water contour surface was later plotted from these depth-to-water measurements, ground water flow directions at the site were then inferred from the contour gradients This information is presented in Figure 4D Each well was then purged until water temperature, pH, and conductivity had stabilized Purged water was contained in a labeled, secured 55 gallon drum on site 3 USA 65 Sept ' 95 Qtr Rpt