Laserfiche WebLink
' 02 February 2000 <br /> AGE-NC Project No 97-0301 <br /> ' Page 7 of 7 <br /> to depths of 35 feet bsg <br /> • The estimated extent of adsorbed petroleum hydrocarbons in soil is illustrated in cross <br /> sectional view in Figures 10 and 11 The estimated extent of petroleum hydrocarbon <br /> ' Impacted soil extends horizontally from MW-1 to P-1, a distance of approximately 30 feet <br /> northwest to southeast, and appears to extend vertically to a depth of at least 40 feet bsg The <br /> vertical and horizontal extent of petroleum hydrocarbon-impacted soil is relatively unknown <br /> 1 southeast, east and northeast of the former UST area <br /> • The estimated extent of dissolved TPH-g and TPH-d in ground water is illustrated in plan <br /> view in Figures 12 and 13 The greatest concentration of dissolved hydrocarbons were <br /> detected at MW-1 The vertical and horizontal extent of dissolved petroleum hydrocarbons <br /> in ground water is unknown southeast, east and northeast of the former UST area <br /> 5.0 RECOMMENDATIONS <br /> 1 <br /> Based on the findings of the environmental activities recounted in this report, AGE recommends <br /> • • Continued quarterlynionitoring of groundwater monitoring wells MW-1,MW-2,MW-3 and <br /> MW-4 The next monitoring event should be performed in March 2000 <br /> ' A search for all potential ground water receptors within a 2,000-foot radius of the site <br /> • Installation of three additional ground water monitoring wells, the wells should be installed <br /> ' off-site on South El Dorado Street and located southeast, east and northeast of the former <br /> UST area to delineate adsorbed and dissolved petroleum hydrocarbon Impact <br /> I <br /> 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br /> ' analytical results provided by an independent laboratory Evaluation of the hydrogeologic conditions <br /> at the site for the purpose of this investigation was made from review of previous consultants reports <br /> and a limited number of available data points (soil samples and ground water samples) and <br /> ' subsurface conditions may vary away from these data points No other warranty, expressed or <br /> implied, is made as to the professional recommendations contained in this report <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br /> i <br />