Laserfiche WebLink
� �rd�M a•� - � � �.. � k ...rte ��.. �. � Y <br /> c+ <br /> gEnseco <br /> 3 p coming company <br /> ..� I 3amp1a Descries <br /> See the attached Sample Description information. <br /> t.a The samples were received under chain-of-custody. <br /> I; Ana? sis Re uest <br /> cm <br /> Tile following analytical tests were requested. <br /> i tab IA Analysis Aescri� <br /> 051007-1 thru 3 Total Petroleum Hydrocarbons <br /> .� Total Petroleum Hydrocarbons (Gasoline) and BTS% <br /> it <br /> _LualitX Contro <br /> i , <br /> A. e � iqueso project specific QC (i.e., spikes and/or <br /> duplcates) was <br /> i` D. Method Blank Results. A method blank is a laboratory-generated <br /> a s ma ple which assesses the degree to which laboratory operations <br /> f andprocedures cause false-positive analytical results for your <br /> t� samples. <br /> � `..a No target parameters were detected in the method blanks associated <br /> with your samples at the reporting limit levels noted on the <br /> ilethod Blank Report. <br /> L. LaboratMControl Sam les - The LC5 Pro ram <br /> t:l <br /> O7 licate control Samples. A DCS is a well-characterized matrix <br /> i <br /> T61ankoiI sand or celite) which is spiked with certain target <br /> parameters and analyzed at approximately 100 of the sample load in <br /> order to establish method-specific control limits. The DCS <br /> results associated with your samples are an the attached Duplicate <br /> r^ Control Sample Report. <br /> 6� 6 <br /> Accuracy is measured by Percent Recovery as in: <br /> i ' B measured concentration X 100 <br /> % recovery <br /> (actual concentration) <br /> ' Precision is measured using duplicate tests by Relative Percent Difference <br /> (RPA) as in; <br /> RPD = /, recover test 1 %recover test 2 x 100 <br /> ig (% recovery test 1 t % recovery test 2)/2 <br /> WIN <br /> � r - <br /> �� r <br />