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NELSON READY MIX <br /> ' Report of Contaminated Soils Excavation <br /> Page: 6 <br /> 4 <br /> 3.0 CONCLUSIONS <br /> The last 6 samples in the "Petroleum Laboratory Sample Results" Table were taken from <br /> the geographic location in the pit specified (i e , "Northeast" refers to the northeast corner <br /> of the pit, etc ) These samples indicate that much of the contamination was removed, but <br /> not all of it This was the intent of the operation, and in this regard, it can be considered <br /> ' to have been successful <br /> Laboratory concentrations in all six soil stockpiles are significant Disposal of this <br /> material at a licensed treatment facility should be considered Concentrations of diesel in <br /> the water tank have been reduced to 13 ppm with no BETX It may be possible to <br /> dispose of this waste water through the municipal sewage facility after obtaining <br /> ' permission and any necessary permits <br /> Based on these findings, M J Kloberdanz & Associates believe that no further action at <br /> this site is necessary However, approval from the San Joaquin Department of <br /> Environmental Health will be required to close the site <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 remedia edures or both <br /> ' Prepared by <br /> 4� <br /> r�ILLIAM R 'N <br /> HENKLE, JR <br /> William R Henkle, Jr , G No EG - 001233 <br /> ' Calif o ►aVtEnglung Geologist#001233 ENGNE�ERING �GEOLCO) IST <br /> OFMichael Janz, REA, R S <br /> California Registered Environmental Assessor 402157 <br /> California Registered Environmental Health Specialist 44783 <br /> EupifoT <br /> P <br /> OPC,4 <br />