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27 February 2012 AGE-NC Project No. 10-1801 Page 2 of 3 well utilizing pressure grouting techniques would significantly decrease the amount of time and space needed to destroy the well. The decrease in space and time to destroy the well would presumably lessen any potential traffic risks. • Wells MW-4A, MW-7A and MW-7B are located in the middle of a hotel parking lot and have a high exposure to hotel traffic. Work performed at wells MW-4A, MW-7A and MW-7B will require closing a portion of the parking lot to traffic, which will also cause an undue hardship to the business owners. • Wells MW-6B/EW-8B/EW-9B are located within the county roadway (Star Street), which poses a significant safety issue due to high exposure to traffic. The location of these wells are in an area where traffic is dense both during day and during night time hours. Acquiring a variance to destroy these wells utilizing pressure grouting techniques would significantly decrease the amount of time and space needed to destroy the wells. The decrease in space and time to destroy the well would presumably lessen any potential traffic delays and/or interruptions to traffic flow in the area. • Well MW-8B is located directly in front of the Delta Fire Department and poses a threat ofobstructing or hindering anyfire emergency response.Acquiring a variance to destroy this well utilizing pressure grouting techniques would significantly decrease the amount of time and space needed to destroy the wells. • Well MW-20A is located in the middle of the McDonald's restaurant parking lot and has a high exposure to restaurant traffic. Work performed at well MW-20A will require closing a portion of the parking lot to traffic, which will cause an undue hardship to the business owners. Acquiring a variance to destroy this well utilizing pressure grouting techniques would significantly decrease the amount of time and space needed to destroy the well. The decrease in space and time to destroy the well would presumably lessen any potential traffic risks. A summary of the most current soil (Appendix A) and ground water monitoring well analytical results (Table 1) has been included for your review. Based on results from the most recent monitoring event performed in September 2011, MTBE concentrations were detected at monitoring wells MW-4A MW-6B, MW-7A, MW-8B, EW-8B EW-9B and MW-20A. However, utilizing a plot of MTBE versus time and logarithmic trend line analysis, it can be reasonably projected that MTBE concentrations at these wells will be at or near non-detectable levels by October 2012 (Appendix B). Based on their locations, the low concentrations established, and MTBE trend graph analysis, wells MW-4A MW-6B MW-7A MW-8B, EW-8B, EW-9B and MW-20A should Advanced GeoEnvironmental,Inc.