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Janet B . Dunlap, P . E. <br /> 14 December 2006 <br /> Page 2 <br /> GeoSyntec is in receipt of the Limited Contamination Assessment Report (LCAR) which <br /> documents the closure of three, 8 ,000-gallon USTs in the southwest portion of the site. <br /> Groundwater samples collected during the performance of the UST closure activities identified <br /> petroleum constituents above Chapter 62-777, Florida Administrative Code (FAC) soil and <br /> groundwater cleanup target levels (CTLs) . The proposed site investigation activities included in <br /> this proposal are not related to the formerly reported release or subsequent site assessments . In <br /> addition to the LCAR, a Remedial Action Plan (RAP), submitted in May 2006 which proposes <br /> intermittent air sparging has been approved for the site. <br /> OVERVIEW <br /> GeoSyntec reviewed the LCAR prepared by Environmental Compliance Services (ECS ) and <br /> dated 30 July 2004. As described in the LCAR, groundwater samples collected from three <br /> monitoring wells (MW-3 , MW-4 and MW- 12) near the southeast comer of the former UST area <br /> exceeded regulatory Groundwater CTLs for several petroleum-related constituents . In addition, <br /> soils screened with an organic vapor analyzer-flame ionization detector (OVA-FID) during the <br /> installation of MW- 12 and nearby soil boring SB- 1 indicated elevated concentrations of organic <br /> vapors were present in soil at those locations . Subsequent to the site investigation, a RAP , <br /> recommending air sparging in conjunction with soil vapor extraction, was approved by Brevard <br /> County Natural Resources Management Department (BCNRMD) to address impacted soil and <br /> groundwater in this area. To date, the remedial actions have not been initiated. <br /> It is GeoSyntec' s understanding that the future use of the property will include road widening <br /> and the construction of a stormwater retention pond. To our knowledge, no recent soil or <br /> groundwater assessment has been conducted in the vicinity of the current USTs and dispensing <br /> system or the proposed stormwater pond location. GeoSyntec recommends advancing soil borings <br /> in the vicinity of the USTs, dispenser islands, and a limited number of locations north of the <br /> existing Cumberland Farms building. Based on OVA-FID field screening, a limited number of <br /> soil samples would be collected for laboratory analysis. In addition, groundwater sampling in <br /> targeted areas is also recommended. As described in our proposal, soil sample collection and <br /> groundwater sampling will be accomplished via direct push technology (DPT) to expedite the <br /> assessment, and to minimize site impacts and project costs. Upon receipt of data collected during <br /> XR06212/CCR060075 IRC-Limited Petroleum Site Assessmmt <br /> engineers I scientists I innovators <br />