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U tfv��U�LI©L! ll <br /> EHWWO-TECH CERTIFICATE OFANAL YSIS <br /> Analytical Laboratory <br /> Frtdar, October 01, 1999 <br /> TO Tim Cuellar <br /> i <br /> Advanced GeoEnv[ronmental <br /> 4005 N Wilson Way <br /> Stockton, CA 95205 <br /> Sample Information <br /> Sample ID PE6042-01 Sample T3pe Grab <br /> Sample Deceription Vapor Extraction Well No 1 Project Nanre Marlowe Properties <br /> DatelTime Sampled 9/27/99 1 00 00 PM Sample Matrix Air <br /> ANALYTICAL RESULT QAIQCREPORT h. v <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blank Colic LCS% Colic MS% MSD RSD <br /> TPN-Gasohne EPA 8015M/DHS 50 uglL 2880 27-Sep-99 ND 5 92046 5 h880%n z 1060°/0 4611,6 v <br /> Benzene EPA 8020 05 ugA- 10 27-Sep-99 ND 10 920°/0 10 120 0% 150 0°. 56%, <br /> Toluene EPA 8020 05 ug1L 85 27-Sep-99 ND 10 9500/0 10 9600% 1100% 34% <br /> Ethylbenzene EPA 8020 05 uglL 48 27-Sep-99 ND '10 89 0% 10 120 046 130 00/b 20% <br /> Xylenes,Total EPA 8020 0 5 ughL 240 27-Sep-99 ND h A 20 8S00/0 20 150 0%f i 9096 A,. 38% <br /> Methyl-t-Butyl Ether(MtBE) EPA 8020 05 ugA- ND 27-Sep 99 ND 20 9009% 20' <br /> 900°x6 950% 1496 <br /> urg/I =nullrgratur per Liter—ppm DI R-Dcrtchon 1 ruin for ilii.I'rtrpase ofRcparlmg Erceptrarral RSD-represent relative petceut d r;"erent(RPD)between duplicates spike of eanrples v <br /> ug/L=micrograms per Diet =ppb sample ramices or rmerrerenece s may result lit higher doectron or Duplicate of Sample <br /> limits AISIMSD nreasure nT rhe ercertt ri*cover tl a rerencres urthrn the matin <br /> C—C'nrrrporrrc Ci—Cm ah p .� <br /> I CS-areasurc ofthe percent mcra m),ofthe LabotatotyControl4pAe(LCS) <br /> R T +ULL M TED, <br /> ` Jon th i Hao V Le, Labor atory Director <br /> r <br /> i <br /> 1,P/1 I m uonmental Protecumi Igcuc)Aferlrod page I of I <br /> .511 kaudarrlAlelhnrl��rl+anunrrrran o 4,5np1`,01"YA4%'St Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />