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Sequoia <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />Prepared & Analyzed 03/09/01 <br />(91[6) 921 9600 <br />Analytical <br />FAX 1916) 921 100 <br />D <br />www sequoialaqulabs com <br />SECOR International -Rancho Cordova Project Arco 4932 Stockton CA <br />ND <br />3017 Kilgore. Road Suite 100 Project Numbcr N/A <br />Reported <br />Rancho Cordova CA, 95670 Project Manager Rusty BLnkosky <br />03/21/01 17 27 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT - Quality Control <br />Sequoia Analytical - Sacramento <br />Reporting Spike Source %REC RPD <br />3nalvte Result Limit Units I LNd Result %REC I imps RPD Limit Nous <br />Batch 1030137 - EPA 5030B (PIT) <br />Prepared & Analyzed 03/09/01 <br />Blank (1030137-BLKI) <br />Prepared & Analyicd 03/09/01 <br />PurgLable Hydrocarbons <br />ND <br />500 ug/l <br />Benzene <br />ND <br />0 500 " <br />Toluene <br />ND <br />0 500 <br />Ethylbenzene <br />ND <br />0 500 " <br />Xylenes (total) <br />ND <br />0 500 <br />Methyl tert-butyl ether <br />ND <br />250 <br />Surrogate a a a Tri luorololuene <br />100 <br />100 100 60-140 <br />LCS (1030137 -BSI) <br />Benzene <br />Toluene <br />Ethylbenzene <br />4nes (total) <br />Keyl <br />tert-butyl ether <br />Surrogate a a a-Triuorotoluene <br />Matrix Spike (1_03.0137-MS1) <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes (total) <br />Methyl tert-butyl ether <br />Surrogate a a a Trrhuorotoluene <br />Matrix Spike Dup (10_30137-MSDI) <br />Ben7enc <br />7 oluene <br />Fthylbencene <br />Xylenes (total) <br />Methyl tert-butyl ether <br />Surrogale a a a Trrfluorololuene <br />Sequoia Analytical - Sacramento <br />0 <br />The results in this report apply to lire samples analyzed rn accordance it ah the chain of <br />cuslod) document This analytical report masl be reproduced at its entrrei) <br />Page 7 of 12 <br />Prepared & Analyzed 03/09/01 <br />961 <br />0 500 ug/l <br />100 961 <br />70 130 <br />973 <br />0 500 <br />too 973 <br />70-130 <br />988 <br />0 500 <br />100 988 <br />70-130 <br />306 <br />0 500 <br />300 102 <br />70-130 <br />102 <br />2 50 <br />100 102 <br />70-130 <br />�-9 47 <br />100 94 7 <br />60-140 <br />--- -- <br />Source <br />5103064-08 <br />Prepared & Analyzed 03/09/01__ <br />971 <br />0 500 ug/l <br />100 ND 97 1 <br />60 140 <br />101 <br />0 500 <br />100 ND 101 <br />60-140 <br />102 <br />0 500 <br />100 ND 102 <br />60-140 <br />31 1 <br />0 500 <br />300 ND 104 <br />60-140 <br />942 <br />250 <br />100 ND 942 <br />60-140 <br />7 78 — <br />— <br />100 778 <br />60-140 <br />Source_ <br />5103064-08 <br />PrLpari-d & Anal) zed 03/09/01 <br />999 <br />0 500 ug/l <br />100 ND 999 <br />60-140 <br />284 2,� <br />101 <br />0 500 <br />100 ND 101 <br />60-140 <br />0 2-� <br />103 <br />0 500 <br />too ND 103 <br />60-140 <br />0 976 2�) <br />31 9 <br />0 500 <br />300 ND t06 <br />60-140 <br />2 �A 2� <br />9.-)7 <br />2 50 <br />too ND 957 <br />60-140 <br />1 58 25 <br />788 <br />100 788 <br />60-140 <br />The results in this report apply to lire samples analyzed rn accordance it ah the chain of <br />cuslod) document This analytical report masl be reproduced at its entrrei) <br />Page 7 of 12 <br />