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Lalscience <br /> nvironmental Glossary of Terms and Qualifiers <br /> Me <br /> aboratories, Inc. Don Burley <br /> From: Rick McCartney[rmccartney@terrapg.coml <br /> Work Order Number: 07-10-0840 Sent: Friday,October 19,2007 1:03 PM <br /> To: Linda Scharpenberg;Don Burley <br /> Co; 'Jennifer Gruda' <br /> Qualifier Definition subject RE:PG&E/1035/CEL 07-10-0840 <br /> See applicable analysis comment. <br /> Hi Don and Lintla, <br /> 1 Surrogate compound recovery was out of control due to required sample dilution, <br /> therefore,the sample data was reported without further clarification. I have reviewed the results and have the following requests: <br /> 2 Surrogate compound recovery was out of control due to matrix interference. The (1) It appears that Sample STK-Drum1(soil Sample)was not analyzed for <br /> associated method blank surrogate spike compound was in control and,therefore,the TPH <br /> sample data was reported without further clarification. as requested. Assuming that I am correct,please analyze this sample <br /> for <br /> 3 Recovery of the Matrix Spike(MS)or Matrix Spike Duplicate(MSD)compound was out of <br /> TPH. <br /> control due to matrix data as re The associated LCS and/or <br /> ic LCSD was in control and, <br /> therefore,the sample data was reported Without further clarification. (2) Please analyze the following HOLD samples for the following: <br /> 4 The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPD STK-2-3.0 TPH(C range),Lead,Arsenic <br /> was in control and,therefore,the sample data was reported without further clarification. STK-5-5.0 Lead <br /> 5 The PDS/PDSD associated with this batch of samples was out of control due to a matrix STK-0-2.0 TPH(C range),PCBs,Lead <br /> interference effect.The associated batch LCS/LCSD was in control and,hence,the STK-7-2.o Arsenic <br /> STK-8-2.0 TPH(ic range),Lead <br /> associated sample data was reported with no further corrective action required. STK-12-3.0 TPH(C range),Lead,Arsenic <br /> A Result is the average of all dilutions,as defined by the method. Call me if you have any questions. Thanks <br /> B Analyte was present in the associated method blank. <br /> C Analyte presence was not confirmed on primary column. Rick McCartney.PG <br /> E Concentration exceeds the calibration range. Terra Pacific Group <br /> 1990 North California Blvd.,Suite 830 <br /> H Sample received and/or analyzed past the recommended holding time. Walnut Creek,CA 94596 <br /> J Analyte was detected at a concentration below the reporting limit and above the 925-215-4601 office <br /> Y P 9 925-408-6151 mobile <br /> laboratory method detection limit Reported value is estimated. 925-215-4602 fax <br /> N Nontarget Analyte. <br /> ND Parameter not detected at the indicated reporting limit. <br /> —Original Message <br /> — <br /> Q Spike recovery and RPD control limits do not apply resulting from the parameter From:Linda Scharpenberg 07 8::40 AMarpenberg@calscience.cOm) <br /> concentration in the sample exceeding the spike concentration by a factor of four or Sent:Friday,October pg,200]8:40 AM <br /> greater. To:rmccartney@terrapg.com <br /> Cc:Don Burley <br /> U Undetected at the laboratory method detection limit. Subject RE'PG&E 1 1035 1 CEL 07-10-0840 <br /> X %Recovery and/or RPD out-of-range. <br /> Z Analyte presence was not confirmed by second column or GC/MS analysis. Hi Rick, <br /> The results you have are not dry weight corrected. We will do so when <br /> we <br /> issue the final report and going forward for this project. <br /> Linda <br /> �r111111.A II. 1, 7440 Lincoln Way,Garden Grove,CA 92841-1427 • TEL.(714)895-5494 • FAX (714)894-7501 <br />