ARCHIVED REPORTS XR0011304 - Laserfiche WebLink

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2.0 CONCLUSIONS AND RECOMMENDATIONS Based on the work completed during this investigation, the following Conclusions and ** Recommendations were developed 1 Underground Storage 'Wanks / Northern Perimeter - Gasoline The removal of the gasoline tanks indicated that an unauthorized release of petroleum hydrocarbons had been released into the soil and due to the shallow depth to water the groundwater has been impacted The sod bonngs installed in this area out to the properties northern boundaries indicate elevated levels of petroleum hydrocarbons e (SB-1, SB-2, HB-4, HB-6, MW-1 AND MW-2) ** Additional soil bonngs to define the limits of the vadose contamination plume and a discrete hydropunch water samples are required across the street to the north side of the site However this area is confined by overhead structures and possible private property restrictions The installation of handbonngs and collection of water samples through a modified soil gas survey probe would complete the tasks required and limit the impact on the adjacent property Feasibility for the excavation of the impacted soils on site should be evaluated ' 2 Undergro=d Storage Tank / Soup hem Peu-!metier - Kerosene The removal of the kerosene tank indicates that an unauthorized release of petroleum hydrocarbons had been released into the soil However the amount of contamination initially appears to be limited to low levels in the immediate area The monitoring well MW-3 indicated a non detect in the water analysis (see Table 3) ' ** Additional soil bonngs to define the limits of the vadose contamination and the feasibility for the excavation of these impacted soils should be evaluated I3 Summary - Additional site assessment ' o The extent of the vadose contamination plume to the northern and western perimeter of the site ' o The extent of the contamination plume within the groundwater in the northern, western and eastern perimeters George Service Pg 4