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r <br /> Pombo Ranch Property <br /> Fourth Quarter Groundwater Sampling Report October 2004 <br /> Page: 3 <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Shallow ground water flow was to the Northeast with a flat gradient, similar to <br /> groundwater flow in previous events. Gasoline petroleum hydrocarbons were not detected <br /> bathe ana_iy_ticgl laboratory in water sarnp es collected fr m monitoring wells. ? <br /> Volatile aromatic hydrocarbons, and fuel -oxygenates were detected by the analytical <br /> laboratory in water samples collected from the monitoring wells MW4 and MW5 located <br /> at and immediate down gradient from the former underground storage tanks. The <br /> contamination is defined laterally and vertically. The dissolved oxygen low in the vicinity <br /> and down gradient of the release indicates that the biological breakdown of the <br /> groundwater contamination is occurring. The San Joaquin County 1 Environmental Health <br /> Division modified and approved on November 3, 2004, the M.J. Kloberdanz work plan <br /> for the over excavation and removal of impacted soils in the source area. Quarterly <br /> monitoring will continue to confirm the breakdown of the remaining contaminants. <br /> The above represents our best professional opinion as to environmental conditions at this <br /> site. These opinions were derived using data at hand, and standards of care common to <br /> the environmental consulting community in Northern California. There is the possibility <br /> that even with proper application of the above methodologies, there may exist on the <br /> subject property conditions that could not be identified within the scope of this sampling <br /> work or which were not reasonably identifiable from the available information. The <br /> methodologies included in this report are not intended to produce all inclusive or <br /> comprehensive results, but rather to provide the client with information regarding <br /> apparent suspicions of existing and potential adverse environmental conditions relating to <br /> the subject property. Additional work at this site may generate data that could lead to a <br /> change of opinion regarding conditions or appropriate remedial procedures or both. <br /> .D G�0 <br /> Prepared by: ��C- <br /> �g IFlF� O� <br /> W ROBERT FOURT in <br /> °C No.i 8 !` <br /> ° <br /> Exp <br /> GEO��� <br /> Robert Fourt, CHG OF G <br /> Certified Hydrogeologist#180 Yip <br /> No.02D5? <br /> Expires: <br /> Michael J. Kloberdanz, REA, REELS F <br /> California Registered Environmental Assessor#02157 <br /> California Registered Environmental Health Specialist#4783 <br />