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1534 Willow Pass Road, Pittsburg, CA 94565. 1701 <br /> McCampbell Analytical , Inc . Toll Free Telephone: (877) 252-9262 / Fax: (925 ) 252-9269 <br /> " H'llen QualitP Counts " http://www.mecampbell.com / E-mail: main@mccanipbell.com <br /> Quality Control Report <br /> Client : Fremouw Environmental Services , Inc . WorkOrder : 1504619 <br /> Date Prepared : 4/ 15 / 15 BatchID : 103706 <br /> Date Analyzed : 4/ 15 / 15 Extraction Method : SW5030B <br /> Instrumento GC3 Analytical Method : SW8021B/8015Bm <br /> Matrix . Water Unit : Itg/L <br /> Project : #59852 ; B &C Painting Sample ID : MB/LCS - 103706 <br /> 1503954-006AMS/MSD <br /> QC Summary Report for SW8021B/8015Bm <br /> Analyte MB LCS RL SPK MB SS LCS LCS <br /> Result Result Val % REC % REC Limits <br /> TPH (btex) ND 70 . 6 40 60 118 70-130 <br /> MTBE # ND 11 . 5 5 .0 10 115 70-130 <br /> Benzene ND 12. 1 0.50 10 121 70-130 <br /> Toluene ND 1200 0 . 50 10 - 120 70- 130 <br /> Ethylbenzene ND 12 . 3 0.50 10 123 70-130 <br /> Xylenes ND 36 . 9 0.50 ` 30 123 70-130 <br /> Surrogate Recovery <br /> aaa-TFT 10.2 9 . 81 10 102 98 70130 <br /> Analyte MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> Result Result Val Val % REC %REC Limits Limit <br /> TPH (btex) 60.8 62. 7 60 ND 101 104 70-130 3 . 14 20 <br /> MTBE 9. 04 9 .28 10 ND 90 93 70-130 2 .69 20 <br /> Benzene 9 .67 10.4 10 ND 97 104 70- 130 7. 15 20 <br /> Toluene 9 . 80 10.4 10 ND 98 104 70- 130 6.00 20 <br /> Ethylbenzene 9 . 98 10.5 10 ND 100 105 70-130 5.44 20 <br /> Xylenes 30. 1 31 . 2 30 ND 100 104 70-130 3 .67 20 <br /> Surrogate Recovery <br /> aaa-TFT 9.64 10. 1 10 96 101 70- 130 4.43 20 <br /> CDPH ELAP 1644 ♦ NELAP 4033ORELAP ` QA/QC Officer <br /> Page 8 of 13 <br />