Transcription
Appendix FQA/QC Review
Appendix FQA/QC ReviewSoil, groundwater, and tissue samples were collected at Rhodia between July and November of2001. Samples were analyzed for some combination of the following analytes: copper, zinc,pH, sulfate, sulfide, TOC, TSS, salinity, and percent moisture. Samples were analyzed by Curtis& Tompkins in Berkeley, California; STL-Chromalab in Pleasanton, California; and ColumbiaAnalytical in Kelso, Washington. A summary of the data review is presented in this appendix.F.1HOLDING TIME AND SAMPLE PRESERVATION REVIEWAnalytical methods used for this study have established holding times which are the maximumamount of time after collection that a sample may be held prior to sample preparation and/oranalysis. Samples were analyzed within method-specified holding times.Soil samples submitted to the lab for analysis on January 18, 2002 were cut from soil boringsthat had been collected in July, 2001. Soil borings were capped and stacked in a warehouse onthe project site at ambient temperature until submission to the lab. Therefore, samplepreservation requirements -- storage of samples at 4 C. -- were not met. All associated sampleresults were qualified as estimated, J, due to this discrepancy.F.2BLANK REVIEWMethod blanks consisted of deionized water that was carried through each step of the analysisalong with the samples and were analyzed with each analytical parameter. Method blanks didnot reveal any evidence of laboratory contamination.F.3MATRIX SPIKE (MS/MSD)MS/MSD samples are analyzed to evaluate matrix interferences for an analytical batch and toassess accuracy. MS/MSD recoveries that were outside control limits are summarized in thefollowing table along with any qualification deemed necessary. All other MS/MSD recoveriesand RPDs were within control limits.MS/MSD Recoveries Outside Control LimitsBatch IDMSRecovery[%]MSDRecovery[%]RPDCommentCopper in water (control limits: 74%-122% for MS)6806059nanaAssociated samples qualified as estimated, J orUJ, to reflect potential low bias.68114-2946nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.Copper in soil (control limits: 24%-150% for MS/MSD and 0%-38% for RPDs)67305430nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-1
Appendix FQA/QC 2nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.68032-732-107ncSample concentration greater than 4 times spikeconcentration so no qualification was necessary.Batch IDCopper in soil (control limits: 75%-125% for MS/MSD and 0%-20% for RPDs)2001/07/23-01.1547.057.119.4Associated sample results qualified as estimated,J, to indicate potential low bias.2001/07/30-05.15-30-108-113Sample concentration greater than 4 times spikeconcentration so no qualification was necessary.Zinc in water (control limits: 69%-129% for MS)67924-1995nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.680601900nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.68114410nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.68120-6900nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.Zinc in soil (control limits: 20%-146% for MS)67305389nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.67922134nanaSample concentration greater than 4 times spikeconcentration so no qualification was necessary.68032-34764-34510ncSample concentration greater than 4 times spikeconcentration so no qualification was necessary.Zinc in soil (control limits: 75%-125% for MS/MSD and 0%-20% for RPDs)2001/07/23-01.1515.026.555.4Associated sample results qualified as estimated,J, to indicate potential low bias.2001/07/30-05.15464.0168MS/MSD recoveries within range expected basedon relative concentrations of sample and spike sono qualification was judged necessary.2001/07/30-01.1576.969.110.7Associated samples qualified as estimated, J, toreflect potential low bias.Sulfate (control limits: 70%-130% for MS/MSD and 0%-20% for RPDs)6736274651Sample concentration greater than 4 times spikeconcentration so no qualification was necessary.G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-2
Appendix FQA/QC 562914Sample concentration greater than 4 times spikeconcentration so no qualification was necessary.682481531632MS/MSD recoveries within range expected basedon relative concentrations of sample and spike sono qualification was judged necessary.Batch IDDissolved Sulfide (control limits: 20%-145% for MS/MSD and 0%-25% for RPDs)68155864Associated non-detect samples rejected, R.TOC (control limits: 40%-150% for MS/MSD and 0%-20% for RPDs)6830026282Spiked sample was not from this project, thereforeno qualification was judged necessary.na - not analyzedJ - estimated concentrationUJ - estimated as non-detect at noted concentrationR - rejectedF.4LABORATORY CONTROL SAMPLES (LCS)LCS are well-characterized, laboratory-generated samples used to monitor the laboratory’s dayto-day performance for analyses and assess the accuracy of the analytical process independent ofmatrix effects. All LCS recoveries were within control limits.F.5LAB DUPLICATE SAMPLESLab duplicates are analyzed to assess accuracy and precision. Lab duplicates with RPDs outsidecontrol limits are summarized below. All other lab duplicate RPDs were within control limits.Lab Duplicate RPDs Outside Control LimitsBatch er in water (control limits: 0%-20% for RPDs)6806056.6946.00mg/L21Associated results already qualified due tolow MS recoveries. No additionalqualification required.681148,0385,917mg/L30Associated results qualified as estimated,J, to reflect imprecise results.G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-3
Appendix FQA/QC ReviewBatch IDOriginalResultDuplicateResultUnitsRPDCommentZinc in water (control limits: 0%-33% for RPDs)6792442912799mg/L42Duplicate sample was not from thisproject, therefore no qualification wasjudged necessary.Zinc in tissue (control limits: 0%-30% for RPDs)K210938764.6265mg/Kg122Sample used for duplicate was notrepresentative of project samples, thereforeno qualification was judged necessary.J - estimated concentrationF.6FIELD DUPLICATE SAMPLESTwo sets of groundwater field duplicate samples were collected and analyzed. The followingtable summarizes the analytes detected in the field duplicates. Agreement is observed in the fieldduplicate results and no qualification is required due to matrix heterogeneity.Summary of Field Duplicate RPDsAnalyteOriginalSample ResultDuplicateSample ResultUnitsRPDMW8A and MW8AdCopper, dissolved 2mg/L6.1Sulfide2224mg/L8.7Sulfide, 961mg/L22HardnessTSSGRD7 and 1pH4.24.2SU0Salinity4.44.0g/Kg9.5G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-4
Appendix FQA/QC ReviewAnalyteOriginalSample ResultDuplicateSample rdness720700mg/L2.8nc - not calculable due to one or more non-detected concentrationsF.7QUALITY CONTROL SUMMARYThe data for the soil and groundwater sampling were reviewed to evaluate their usability forproject decisions. The accuracy and precision of the data were found to be acceptable for use ofthese data in project decisions with the following qualifications.Summary of Qualified DataSample 0 5.08.38,8006,0008,2009,1008,100mg/LJJJUJJJJJJJLow MS/MSD recoveries- qualified as estimated toindicate potential lowbias.MW19MW3AMW20MW8AMW8AdMW25Copper,total5722 5.0 5.0 5.0270mg/LJJUJUJUJJLow MS/MSD recoveries- qualified as estimated toindicate potential """"High lab duplicate RPDs qualified as estimated toindicate imprecise results.G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-5
Appendix FQA/QC ReviewSample 60240210mg/KgJ"""""""""""Low MS/MSD recoveries- qualified to indicatepotential low 04002132019mg/KgJ""""Sample results werequalified, due to impropersample storage, toindicate the uncertaintyassociated with 302403.55287120120350110mg/KgJ"""""""""""Low MS/MSD recoveries- qualified to indicatepotential low bias.SSB1-0SSB1-1SSB1-2SSB1-3SSB1-4SSB1-0 """""""""""""""""""Low MS/MSD recoveries- qualified as estimated toindicate potential lowbias.G:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-6
Appendix FQA/QC ReviewSample """"Sample results werequalified, due to impropersample storage, toindicate the uncertaintyassociated with 4.24.55.0S.U.J""""Sample results werequalified, due to impropersample storage, toindicate the uncertaintyassociated with them.Dissolvedsulfide 0.04"""mg/LRRRRVery low MS/MSDrecoveries - rejected toindicate uncertaintyassociated with these data.MW 51MW 57MW 58MW 62J - estimated concentrationUJ - estimated as non-detect at noted concentrationR - rejectedG:\GURR\RISK ASSESS - APP F.DOC\11-FEB-02\\F-7
& Tompkins in Berkeley, California; STL-Chromalab in Pleasanton, California; and Columbia Analytical in Kelso, Washington. A summary of the data review is presented in this appendix. F.1 HOLDING TIME AND SAMPLE PRESERVATION REVIEW Analytical methods used for this study have established holding times which are the maximum
