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i i 07 August 2007 AGE-NC Project No. 95-0128 Page 2 of 3 • , The proposed boring near boring B4 has the potential to define prior hydrocarbon impact detected east of the dispenser islands and confirm the remediation of the hydrocarbons; • The proposed boring north of the dispenser island release point has the potential to define prior hydrocarbon impact detected at the dispenser islands release, to a depth greater than mediation of the hydrocarbons near the previously sampled (VW-3) and confirm the re y p Y dispenser island; • The proposed boring near borings B2/B 10 has the potential to detect hydrocarbons west of the dispenser islands and confirm the remediation of the hydrocarbons near boring B10 and define the extent of hydrocarbons near the on-site building; • The proposed boring south of the dispenser island release point has the potential to define prior hydrocarbon impact detected at the dispenser islands and vapor well VW-1 and the UST upgrade samples, to a depth greater than previously sampled and confirm the remediation of the hydrocarbons near the dispenser island; • The proposed boring directly west of the dispenser island release point has the potential to define prior hydrocarbon impact detected at the dispenser islands, to depth greater than previously sampled and confirm the remediation of the hydrocarbons near the dispenser island; • The depth for sampling the borings should not be terminated based on the arbitrary level of the current water table level of 30 feet bsg as proposed by your office.The level of the water within well is a function of the pressure exerted on the water bearing sediments at the site and may not represent the depth of the saturated soil,which are typically greater. The depth to ground water has been as great as 55 feet bsg, when the initial monitoring wells were installed,after the discovery of the dispenser island release at the site. The operation of the ground water extraction combined with shallow soil vapor extraction has removed hydrocarbons, therefore soil sample collected should proceed to the depth proposed of 50 feet bsg, to prevent multiple mobilizations for complete assessment of the soil at the site. AGE has proposed the performance of a hiatus or rebound response analysis for the SVE operation. Additionally, AGE requested a written response for the operation and termination (findings) of ground water extraction and treatment for submission to the Underground Storage Tank Clean Up Fund(USTCF).The USTCF has stated the site conditions are amenable for closure and remediation should be discontinued,and further has proposed to not reimburse future remediation costs for the release at the site. As stated, the operation and monitoring of ground water extraction has ceased with positive results;the SVE operation needs to be terminated and the site data should be prepared for closure. AGE requests a written response to this work plan and the proposed termination of the SVE by 20 August 2007. Advanced GcoEnvirenmental,Inc