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CLS Labs i <br /> Grayland Environmental 12/08/97 <br /> 2731 Quail Street <br /> Davis, CA 95616 <br /> Attention Jeff Clayton <br /> Reference Analytical Results <br /> Project Name CLS ID No P0595 <br /> Project No 022-160 CLS Job No 810595 <br /> Date Received 11/21/97 <br /> Chazn Of Custody 32025 - 32024 <br /> The following analyses were performed on the above referenced project <br /> No of Turnaround <br /> samples Time Analysis Description <br /> 4 2 Days Lead by EPA Method 6010 <br /> 4 10 Days Lead by EPA Method 6010 <br /> 2 2 Days TPH Diesel by DES Method - M8015 (soil) <br /> 13 2 Days TPH Gasoline and BTXE (soil) <br /> 4 10 Days TPH Gasoline and BTXE (soil) <br /> . 13 2 Days Oxygenates by EPA Method 8260 <br /> These samples were received by CLS Labs in a chilled, intact state and <br /> accompanied by a valid chain of custody document <br /> Calibrations for analytical testing have been performed in accordance to and <br /> pass the EPA' s criteria for acceptability <br /> EPA 8260 <br /> Method 8260 Oxygenates surrogate standard recovery data was outside acceptance <br /> limits for Samples 119-3-FD5" (P0595-11A) and "S-4-FD6" (P0595-I2A) due to the <br /> presence of matrix interference in these samples <br /> The samples were run on 11/24/97 and 11/25/97 Reruns were analyzed on <br /> 12/02/97 to confirm the matrix interference <br /> The date analyzed for Samples "S-4-FDI" (20595-7A) , "S-3-FDS" (20595-11A) , and <br /> "S-4-FD6" (P0595-12A) have the latter date <br /> The t-butyl alcohol value for the Sample "S-4-FD1" (P0595-7A) is derived from <br /> a single calibration point <br /> Analytical results are attached to this letter Please call if we can provide <br /> additional assistance <br /> Szncer , <br /> George Halon <br /> Laboratory-Director <br /> • <br /> 3249 Fitzgerald Road Rancho Cordova CA 957412 (916)638-7301 Fax (916) 638-4510 <br />