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i <br /> • Vacuums were detected in a well as far away as 130 feet from the <br /> vacuum source, and <br /> • Soils encountered during this investigation are amenable to vapor <br /> extraction remediation <br /> I <br /> 7.2 Recommendations <br /> ' At this time, Park offers the following recommendations <br /> ' • Delineate the lateral extent of petroleum hydrocarbons in <br /> groundwater off-site in southwesterly (up-gradient) and <br /> northeasterly (down gradient) directions <br /> Prior to any <br /> nadditional assessment beyond the above mentioned scope of work, a determination <br /> Y Y � <br /> of the other potentially responsible parties (PRP's) to the potential down-gradient impacted soil <br /> ' and groundwater should be made <br /> 7.3 Recommended Additional Assessment <br /> The initial effort would include, but is not limited to <br /> • Drilling two soil borings to 90 feet bgs southwest and northeast of <br /> the site and collecting soil samples at 5-foot intervals, <br /> ' • Analyzing selected soil samples for TPH as gasoline and diesel, <br /> ' • Installing two groundwater monitoring wells in the borings and <br /> analyzing the groundwater samples for TPH as gasoline and diesel, <br /> and <br /> • Preparation of an addendum to this report documenting the <br /> additional findings <br /> 8.0 MUTATIONS <br /> ' The site assessment services performed by Park were performed in a manner consistent with <br /> the level of care and skill ordinarily exercised by members of the profession currently practicing <br /> ' in the same locality under similar conditions <br /> B 112511 RPT 17 <br />