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CHROMALAB, INC. <br /> ' Environmental Services(SDB) <br /> ' March 27 , 1998 Suhma_ssion # 9803309 <br /> ' AQUA SCIENCE ENGINEERS INC <br /> Atten Charlie Rous <br /> ' <br /> Project- UNOCAL Pro_7ect#: 3254 <br /> Received March 20, 1998 <br /> re Blank spike and duplicate report for TEPH analysis <br /> Method EPA 8015M <br /> 1 Matrix WATER <br /> Lab Run# 11777 Analyzed March 24 , 1998 <br /> Spike <br /> 1 Spike Amount Amount Found Spike Recov o <br /> BSP Dup BSP Dup BSP Dup Control o RPD <br /> Analyte (uc7/L) (ug/L) M (o) Limits RPD Last <br /> DIESEL 2500 2500 2470 2400 98 8 96 0 60-130 2 87 25 <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> BS Smpt # 176773 1220 Quarry Lane- Pleasanton, California 94566-4756 <br /> BSD smpl # 176774 (510) 484-1919 - Facsimile (510) 484-1096 OL8 1226 C..16 <br /> Federal ID #68-0140157 <br />