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SEQUOIADANALYTICAL 0 <br /> 819 Striker Avenue, Suite 8 e Sacramento, CA 95834 <br /> (916) 921-9600 * FAX (916) 921-0100 <br /> art ystemsEnvironmental ...... <br /> CllentProject' 5. . #EK6032=z,rricKinley#rench ................. <br /> C'a'mp Turnpike <br /> 17,4719 Quail Lakes Dr., #G-253 <br /> Matrix: Soil <br /> Stockton, CA 95207 <br /> Attention: Allan J. Fetko QC Sample Gaup: 3040784-95 Reported: May 3, 1993:"," <br /> ................. <br /> ......... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel Oil&Grease <br /> EPA <br /> Method: EPA 8020 EPA 6020 EPA 8020 EPA 8020 8015 Mod, EPA 413.2 <br /> Analyst: Chiaravalloti Chiaravalloti Chiaravalloti Chiaravalloti Chiaravalloti Chiaravalloti <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg 7,5 mg/kg 0.25 mg/kg <br /> LCS Batch#: LCS042993 LCS042993 LCS042993 LCS042993 BLK042893 BLKG43093 <br /> I MS Ms <br /> Date Prepared. 4/29/93 4/29/93 4/29/93 4/29/93 4/28/93 4/30/93 <br /> Date Analyzed 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 4/30/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3 Inj-13 IR-1 <br /> LCS % <br /> Recovery: 97 102 99 94 93 88 <br /> Control Limits: 80-120 80-120 80-120 80-120 75-125 75-125 <br /> ........... .... . . <br /> ............. <br /> ........... .. ... <br /> . . .......... ... . <br /> MS/MSD <br /> Batch#: 3040794 3040794 3040794 3040794 BLKG42893 BLK043093 <br /> Date Prepared; 4/29/93 4/29/93 4/29/93 4/29/93 4/28/93 4/30/93 <br /> Date Analyzed 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 4/30/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3 Inj-B IR-1 <br /> Matrix Spike <br /> %Recovery: as 95 95 90 93 88 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 90 100 100 95 95 96 <br /> Relative <br /> Difference: 5.7 SA 5.1 5.4 2.1 8.7 <br /> SEQUOIA ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> Wefidy Amundsen and are not used to accept or reject batch results. <br /> Laboratory Director 3040781.ESS <12> <br />