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' MATRIX SPIKE/MATRIX SPIKE DUPLICATE <br /> VOLATILE AROMATIC COMPOUNDS <br /> Analytical Method Modified EPA 8020(BTEX)/EPA 8015 (TPH) <br /> Preparation Method: EPA 5030 <br /> Company Raney Geotechnical SDG #• 12901 <br /> Project Name. Gateway Project Number. 794002 <br /> Sample Description NA Lab ID• 12901-3/30271,30272-8404 <br /> Sample Number EBI-41 Date/Time Sampled- 10/30/95 12 15 <br /> Date/Time Received 10/31/95 10 48 Matrix Soil S Units uQ/Kg (ppb) <br /> ' Date Prepared 11/07/95 Batch Number 4096-951107 <br /> Initial Wt /Volume 20 , 20 grams % Moisture- NA <br /> Final Volume 10 , 10 mL <br /> MS Date Analyzed 11/07/95 MSD Date Analyzed 11/07/95 <br /> Instrument/Column vgc04/DB-WAX <br /> ' Analyst TL Data File 9531060-0, 95310d51- <br /> I <br /> (a) (b) (c) (d) (e) ( (g) <br /> Sample <br /> MSI Sample Dup Acceptance <br /> MSD + + Spike Linuts <br /> Sample Spike Spike Spike Spike Dup RPD <br /> ' Analyte Conc Conc Conc Rec % Cone Rec % % % Rec RPD <br /> Benzene 0 250 240 96 260 104 8 70-124 s25 <br /> . Ethyl benzene 0 250 220 88 240 96 9 67-128 s25 <br /> Spike Recovery = d = ( (c-a) /b) x 100 <br /> ' Spike Duplicate Recovery = t = ( (e-a) /b) x 100 <br /> Relative Percent Difference = g = ( Ic-el ) / ( (c+e) x 5) x 100 <br /> (h) (k) {1) <br /> MSI Sample Sample <br /> MSD + Dup <br /> Surr Surr Surr + Surr <br /> Spike Spike Spike Surr Spike Acceptance <br /> Surrogate Conc Conc Rec % Spike Conc Dup Rec % Limits <br /> Bromofluorobenzene (PID) 200 160 82 180 90 60-111 <br /> Surrogate % Recovery = 3 _ (z-h) x 100 <br /> Surrogate Duplicate Recovery = 1 = (k/h) x 1.00 <br /> • The cover letter and enclosures ar egra parts of this report <br /> Approved by Date —It-4-4 <br /> ' MB Environmental Master Builders Technologies <br /> Lab tories <br /> HI , <br /> Report Generated 11/09/95 page 1 <br /> P <br />