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Entech Analytical Labs, Inc. 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Matrix Spike and Matrix Spike Duplicate <br /> METHOD: EPA 6010 <br /> Date Analyzed: 03/25/99 <br /> QC Batch#: SM990338 Date Digested: 03/24/99 <br /> Matrix: Solid Digestion Method: EPA 3050 <br /> Units: mg/kg Spiked Sample: G7266 <br /> PARAMETER Method# M13 SA SR SP i SP SPD SPD RPD QC LIMB'S <br /> m2/k mg/k mg/kg :` m %R mg/kg %R RPD %R <br /> ;Antimony ; 6010 ; <1.0 50. ; 3.5 ' 42. ; 78 45. 1 84 ; 6.7 ' 25.0 ; 64-I11 ; J <br /> 1 1 1 1 1 <br /> !Arsenic 1 b0i0 I <1.0 1 50. 1 0.0 1 44. 89 I 45. 1 90 1 1.1 i 25.0 1 55-117 i <br /> 1 <br /> 9 <br /> ;Barium 6010 <1.0 1 50. 98.3 1 131. 1 66 1 129. 1 61 1.9 25.0 59-11 <br /> 1 1 1 1 1 1 1 1 1 1 1 f <br /> 'Beryllium 6010 <1.0 1 50. 0.0 47. 95 1i 46. 93 ; 2.1 25.0 65-113 1 <br /> ,'Cadmium 6010 to <1.0 11 50. It 26.2 ' 68. 1' 85 1 56. 60 I 19.6 25.0 69-104 1 <br /> e 1 , , 1 + 1 i i e 1 1 <br /> 'Chromium 1 6010 1 <I.0 50. 1 58.6 90. 64 ; 88. 60 ; 2.2 ; 25.0 58-121 ; <br /> <I.D 50. a.4 48. 88 47. 86 IJ Z5.0 + 6I-112 <br /> 'Cobalt 1 6010 1 ' ' 1 i <br /> 1 <br /> ;Co pp cr 6010 I <1.0 50. 1 47.6 1 80. 1 66 1 79. 63 1.4 25.0 51-128 <br /> 1 + 1 , 1 , 1 1 + <br /> :Lead 1 6010 <1.0 50. 5.3 52. 94 <br /> � 53. 96 2.1 25.0 60-112 <br /> (Molybdenum 1 6010 <1.0 1 50. 1 0.0 1 46. 1 91 1 45. 1 91 0.4 1 25.0 1 49-117 <br /> Nickel 1 6010 1 <1.0 50. 1 165. 1 34 1 1.5 1 25. ' <br /> 1 0 53-127 <br /> 1 , 17 185. 11 39 183. , f 1 <br /> !Selenium I 6010 1 <1.0 1 50. 1 0.0 1" 33. 1 65 I 32. I 65 : I.0 I 25.0 50-118 <br /> , 1 <br /> ' 1 <1.0 50. 1 63.3 1 40. -47 40. 1 23 <br /> 1 -47 1 0.5 .0 57-115 1 ; <br /> !Silver � 6010 i <br /> 'Thallium 6010 ; <1.0 50. 0.0 1 51. l01 55. 110 8.2 : 25.0 57-116 <br /> Vanadium 1 6010 1 <1.0 50. ; 20.8 1 65. 88 1 64. 1 86 1 1.6 25.0 53-127 <br /> 1 t 1 <br /> ,Zinc 6010 = <I.D � 50. 55.1 � 85. 1 60 � 83. , ;� SS I 2.7 t 25A 62-116 <br /> Calculated Recoveries Outside of Control Limits: <br /> Cadmium <br /> Nickel <br /> Silver <br /> Zinc <br /> i <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> nc: Not Calculated <br /> MB: Method Blank <br /> SA: Spike Added <br /> .,SR: Sample Result <br /> SP: Spike Result <br /> SP(%R): Spike%Recovery <br /> SPD: Spike Duplicate Result <br /> SPD(%R): Spike Duplicate%Recovery <br /> I <br />