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• the first levels recorded in June 2 The hydraulic gradient has remained quite constant since monitoring began, it is essentially due south as shown on E.XHUIT A 3. Laboratory analyzes of water samples taken in January from MW-1 , which is in an upgradient position from the removed UST' s , reveal that the amounts of Toluene, Ethylbenzene, Xylene have decreased since the Sept data, but Benzene & TPH-G have increased 4 Levels of BTEX & TPH-G measured in MW-2 were lower than those recorded in Sept , and lower than the initial sampling done in June. This well is the farthest from the site of the removed UST' s, and is esentially on strike with, (parallel to, ) the tank site 5 Laboratory results from the January sampling revealed that MW-3, which is directly downgradient from the tank site, had the highest levels of all tested components compared to the other wells With the exception of Ethylbenzene, the levels had . decreased considerably from the September measurements. 6 MW-4, which is upgradient from the removed UST' s , had lower levels of BTEX & TPH-G in January than in September - this would be expected due to it' s location However, while levels of Toluene, Ethylbenzene, Xylene, & TPH-G were also lower than those recorded in June, Benzene was higher EXHIBIT $ shows the direction of the groundwater gradient as calculated from the three sampling periods TABLE I summarizes the results of the laboratory analyzes since placement of the monitoring wells The groundwater monitoring summary report pre- pared by Del-Tech is included as EXHIBIT B and a copy of the laboratory analysis sheet & chain of custody are attached as EXHIBIT C ANALYSIS OF GROUNDWATER SAMPLING TO DATE: Based upon an analysis of all the information obtained to date at this site, the following conclusions seem appropriate 1 Although the data collected indicates the hydraulic gradient to be in a southerly direction, the changes in levels of contami- nation measured in the wells suggests that either the gradient direction is not stable, or another offsite source exists . The • lowering of the water table since sampling began, (an average of 2