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Appendix D.1:Data Usability Summary <br /> QC criteria and were flagged E for associated samples SB-26-W-080227, SB-27-W-080226, SB-28-W- <br /> 080226, and SB-29-W-080226. <br /> When non project-specific MS/MSD pairs were analyzed for QC purposes,those samples were not <br /> evaluated in relation with matrix compliance in the Vernalis Offsite samples. <br /> LCS/LCSDs <br /> A LCS was analyzed with each analytical batch of samples. All LCS/LCSD%Rs were within the <br /> laboratory control limits. <br /> Surrogates <br /> All surrogates were within QC range with the exception of orthoterphenyl%Rs associated with sample <br /> SB-33-W-080225 (125 percent),which was flagged E. <br /> Representativeness <br /> Representativeness was assessed through the evaluation of the equipment blank sample, chain-of-custody <br /> forms,preservation, and holding times. The reported results were also compared to the laboratory's <br /> MDLs and LOQs. <br /> Method Blank Results <br /> All laboratory method blanks were free of contamination with the following exception: phenanthrene was <br /> detected in the method blank(0.011 micrograms per liter[gg/L]) associated with samples SB-33-W- <br /> 080225, SB-32-W-080226, SB-31-W-080226, SB-26-W-080227, SB-27-W-080226, SB-28-W-080226, <br /> and SB-29-W-080226, and was flagged E. Phenanthrene and anthracene were detected associated with <br /> SB-29-W-080226MS/MSD pair;however,the samples had concentrations greater than 10 times the <br /> amount found in the blanks and therefore no flags were applied. <br /> Field QC Results <br /> Eight rinsate blank were submitted with the field samples. The rinsate blanks were free of contamination <br /> with the following exceptions: naphthalene was detected in rinsate blanks QA-Screen-R-080226 0.14 gg/l <br /> and QA-Screen-R-080227 0.13 µg/L. The associated samples were consequently data qualified as E. <br /> Chain-Of-Custody Forms <br /> Sample analytical results were evaluated for agreement with the chain-of-custody form. The evaluation <br /> indicated that all samples were received at the laboratory in the appropriate containers and in good <br /> condition with the chain-of-custody form filled out properly. <br /> Preservation and Holding Times <br /> Samples were preserved in the field as appropriate,were received at the laboratory within the acceptance <br /> temperature criterion of 4 f 2 °C, and were prepared and analyzed within specified holding times. <br /> Samples QA-Tubing—R-080225, SB-33-W-080225,and SB-31-W-080226 were analyzed for TPHd <br /> (Clo-C25)with silica-gel cleanup outside the holding time and were flagged E due to a laboratory error. <br /> Sample preservations,when required by the analysis,were less than the acceptance pH limit of 2. <br /> Reporting Limits <br /> Data reported for this sampling event were reported with the laboratory MDLs. The MDL represents the <br /> lowest concentration point where an analyte can be positively identified,but the quantitation is an <br /> estimate. The LOQ is the lowest concentration of an analyte in a sample that the laboratory can report <br /> with precision and accuracy. Analytes that were reported between the MDL and LOQ for this data set <br /> were qualified J as estimates. Due to the nature of the sample matrix,the laboratory used reduced <br /> aliquots for several samples and the MDL and LOQ were adjusted appropriately. <br /> D.1-3 <br /> From Science to Solutions <br />