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approximately 62 to 88 feet. On-site conditions contradict the predicted depth, however, <br /> as discussed below. <br /> Live Oak was provided with a draft copy of the Geotechnical Investigation for the project <br /> prepared by Quantum Geotechnical, Inc. (2022). Quantum advanced four borings <br /> within the proposed structure area to a maximum depth of 45 feet below ground surface <br /> on July 15, 2022. Ground water was encountered in these borings at a depth of 15 to <br /> 16 feet; the report noted that fluctuations in the ground-water table may occur as a <br /> result of variation in rainfall, as well as urbanization of the area. Quantum Geotechnical <br /> advanced an additional boring to 9.5 feet depth within the proposed leach field area. <br /> Stiff clay was encountered to the full depth of the boring; no ground water was <br /> encountered. <br /> Potential Ground Water Contamination Issues <br /> The Soil Suitability Study is not intended to be an investigation into ground-water <br /> contamination sources, and no such investigation was conducted. Many sources can <br /> contribute to ground-water contamination, including leaking underground storage tanks, <br /> agricultural activities, dairies, septic systems, and storm water infiltration. Agricultural <br /> activities and the use of septic systems in the area are known ground-water <br /> contamination sources with the potential to impact the Site. <br /> On-Site <br /> The subject Site is the location of a closed leaking underground fuel tank case. <br /> According to information available from GeoTracker, the Site was a fuel station from <br /> approximately 1930 to 1998. Eleven underground storage tanks were removed in 1998. <br /> A total of 22 monitoring wells and 5 free product monitoring wells were installed <br /> between 2000 and 2004. The case was closed in 2012. However, GeoTracker lists <br /> several "post closure management requirements" that could affect new construction. <br /> This summary is provided for informational purposes only; Live Oak has not performed <br /> a review of pertinent environmental documents related to this Site beyond the <br /> GeoTracker summary discussed. An environmental review of the Site is beyond the <br /> scope of the Soil Suitability/Nitrate Loading Study. <br /> The Geotechnical Investigation prepared by Quantum Geotechnical makes reference to <br /> a Limited Phase II Environmental Assessment prepared by Advanced <br /> GeoEnviron mental. As reported by Quantum, the Phase II calls out past automotive <br /> and truck repairs on the Site as a potential issue, based on discharge of waste fluids to <br /> septic systems typical of these historical facilities. It appears that Advanced <br /> GeoEnvironmental conducted some sampling at the Site, detected residual levels of <br /> petroleum hydrocarbons and volatile organic compounds, and recommended that a soil <br /> vapor barrier be installed beneath any new structures where people will work. It is <br /> LOGE 2240 Page 4 <br />