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OCT 19 '93 14:35 SEQUOIA ANALYTICAL P.6 <br /> j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 36.4-5600 • FAX(415)364.9233 <br /> ent Pr 'ect lD: 15005201, Hull <br /> RESNA <br /> Ori #�Co. <br /> 1710 Main Street Mahtr Soo <br /> �Att I,.utiemlali • <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene BeMeM X tines <br /> Method: EPA 8020 EPA a= EPA 8020 EPA 8020 <br /> Analyst: C.Donohue C.Donohue C.Donohue C.Donohue <br /> Conc. Spiked: 0.20 020 0.20 0.60 <br /> Links: ffQN *v/t mg/ka mg/kg <br /> LCS Batch#: 8LK101593 BLK1015M SLK1015W BLKIOIS03 <br /> Date Pr8lafed: 10/15/93 10/15/93 10/15/93 10/15/93 <br /> Date Anatymd: 10/15/9.3 10/15/93 10/15/03 10/15/93 <br /> instrumsrrt I.D.#: GCHP-8 GCHP.6 GCH-6 GCHP.6 <br /> LCS% <br /> Recovery: 26 100 100 102 <br /> Control Umft: 6G740 60.140 60-]40 60.140 <br /> IUSIMSD <br /> Batch#: 3199902 3J49902 3149902 3,149902 <br /> Date Prepared: 10/15/93 10/1s/a3 10/15/aa 10/15/93 <br /> Date Analyzed: 10/15/93 10/15/93 10/15/93 10/13/93 <br /> Instrument LD,#: GCHP-6 GCHP-6 GCHP-6 GCHP•6 <br /> Matrix Spike <br /> %Recovery: 90 95 95 96 <br /> Matra Spike <br /> Duplicate% <br /> Recovery: 100 110 110 110 <br /> Relative% <br /> Difference: ]1 15 15 14 ' <br /> SEQUOIA ANALYTICAL Pieria mote: <br /> The LCS is a control sample of known,irrperfenaflt free matrix that is anatyzed using the sante reagents, <br /> ' '--� mtkm Of XmPie batch rs sDue m mmaamx enacts.Ow GC limbs for MS/M=s ars adv*Ny orsly <br /> and sue not used to aompt or reject batch resuhs. <br /> Vickie Tague <br /> Project Manager 3J70WI.WAT <5> <br />