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with the .removed UST' s. The data indicates that either; ( 1 ) an offsite source exists to the northwest; or (2) , the hydraulic gradient since installation of the UST' s has been very divergent_ The data also reveals that a "zero" has been established to the east and south_ 5. PLATE III shows lines of equal concentration of TPH as gasoline; again, the data indicates a possible offsite source to the northwest. The limits of the plume have been defined to the east & south, which supports previous work. COMMENTS= 1. The highest levels of BTEX & TPH-G continue to be present in the water beneath MW-1 , which was in a downgradient position only during the January, 1994 sampling event. MW-33, which is located closest to the removed UST' s, has also measured significant levels of BTEX & THPH-G, although it has not been in a down- gradient position since monitoring began. 2 Even though there is no direct evidence of an offsite source, the data obtained to date continues to indicate its' existence. • The two recently completed monitoring wells have defined the limits of both soil and groundwater plume to the east & south Mid--4, in a direct downgradient position, should have measured gasoline components; it has not done so. 3. Based upon the results of data from the 5 monitoring wells, it appears that additional work is required to define the limits of the soil & groundwater plume to the north and west. It has been fully defined to the east and south as shown on PLATES II .& II.I _ Further work in those directions is not warranted. 4 Until the limits of contamination have been more fully defined, it is not possible at this time to design an effective remediation plan. However, because of the shallow depths involved, and the sandy nature of the sediments, the technology exists to clean the site. PROPOSED PLAN FOR FURTHER DEFINITION OF PLUME: We believe that the most cost-effective method of delineating the soil & groundwater plume is to place several small diameter hydraulically or hammer driven soil/water probes to the north & west of the property. Discrete soil & water samples can be obtained quickly & at minimal expense Once the limits of contamination have been delineated, remediation proposals can be • solicited & cleanup of the property can be started. We will began soliciting bads for doing the work within the next 2