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i <br /> Kennedy/Jenks Consultants <br /> ( Table 4: Summary of Laboratory QA/QC <br /> I <br /> Surrogate%Recovery(sf <br /> LCS LCSD MS MSD MS MSD <br /> Recovery [%Recovery/ [%Recovery/ [%Recovery/ [%Recovery/ [%Recovery/ [%Recovery/ <br /> Report Lower Limit— Lower Limit— Lower Limit— Lower Limit-- RPD Lower Limit-- Lower Limit- <br /> i Media Lab ID Batch No. Higher Limit]tat Higher Limit]thi Higher Limit](:) Higher Limit]" [Result/Limit](')) MS-4X() MSD-4XiO Higher Limit] Higher Limit] <br /> 1 720- <br /> Groundwater 913-1 720-2939 - -- -- Mercury--[71/85-115] Mercury[22120] - -- -- -- <br /> Cont`d 720- 720-4035 -- TPHd TPHd <br /> 1325-1 51/60-130]-N [24/60-130]-N <br /> _ _ _ �.. .__ <br /> 720-4177 -- -- - __ Antimony Antimony <br /> T � [47175-1251_ [49175-1 gq_ <br /> Toluene _ Toluene[170135] <br /> 1326-1 - - -- -- <br /> 720- 720-4428 [1090178-122] -- -- - - - <br /> (a) LCS = Laboratory Control Sample; only LCS recovery samples exceeding control limits are shown. <br /> (b) LCSD=Laboratory Control Sample Duplicate; only LCSD recovery samples exceeding control limits are shown. <br /> (c) MS = Matrix Spike;only MS recovery sample exceeding control limits are shown. <br /> (d) MSD = Matrix Spike Duplicate;only MSD recovery samples exceeding control limits are shown. <br /> (e) RPD= Relative percent difference;only RPD values exceeding control limits are shown. <br /> (f) The analyte present in the original sample is four times greater than the matrix spike concentration;therefore,control limits are not applicable. <br /> (g) Only surrogates exceeding recovery control limits are shown <br /> (h) NC= Not calculated <br /> (i) N = MS/MSD spike recovery exceeds upper or lower limits <br /> I ' <br /> i <br /> 6 <br /> f <br /> t <br /> DRAFT Phase I Remedial Investigation Report Page 5 of 5 <br /> x Former Tracy Railyard, Tracy, California <br /> giis-groupladmin4nb10510565177.181-uprr109-reponsW rptVablesllablakdce <br />