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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> James E Bruya, PhD 3012 15th Avenue West <br /> Beth M Albertson, M S Seattle, WA 98119-2029 <br /> Bradley T Benson TEL (206) 285-8282 <br /> Kelley D Wilt FAX (206) 283-5044 <br /> October 8, 1996 <br /> Eric Findley, Project Manager <br /> Kleinfelder <br /> 3077 Fite Circle <br /> Sacramento, CA 95827 <br /> Dear Mr Findley <br /> Enclosed are the results from the testing of material submitted on September 25, 1996 from your 23-482276- <br /> 600 project <br /> The material in sample SSBI-21 (19667) appears to be a biologically weathered diesel#1/kerosene as <br /> apparent by the lack of a prominent pattern of n-alkanes from about 7 minutes to around 14 minutes on the <br /> GCIFID chromatogram This material appears to be mixed with a diesel#2/home heating oil that Is less <br /> weathered as apparent by the presence of an even pattern of n-alkanes from about 14 minutes to 24 minutes <br /> An enriched level of the Nomarkers pristane and phytane at about 17 and 18 minutes is another Indication of a <br /> mixture of weathered and unweathered middle distillates <br /> On October 3, 1996,you submitted a fax of the site conditions for this sample You Indicated that the soil <br /> consisted of clay that was low in porosity and permeability This type of sod would greatly decrease the amount <br /> of water and air movement within the sod This would typically cause the rate of degradation to be very slow It <br /> also may be in anaerobic conditions,which would decrease the rate even more Based on a slow rate of <br /> degradation, it appears that the kerosene range material has been released for some time The lack of n- <br /> alkanes Indicate advanced degradation The age of this product is likely to be older than ten years old The <br /> diesel 92 range material appears to be from a more recent release The lack of significant degradation is <br /> shown by the Gaussian curve of n-alkanes The age of this product is therefore much newer, and it appears to <br /> have been released within the last five years <br />' We appreciate this opportunity to be of service to you and hope you will call If you should have any questions <br /> Sincerely, <br /> FRIEDMAN & BRUYA, INC <br /> Kelley Wilt <br /> Chemist <br /> keh <br /> Enclosures <br /> NAA1008R DOC <br />