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• • 4. DVR SDG 02-5623, Method SW8270C,Section IV: The table in this section appears to inconsistently qualify samples due to CCV exceedances. For example, the 10/29/02 benzoic acid qualifiers are listed as J/UJ. However, the 11/26/02 benzoic acid qualifiers are listed as J/None. Please revise the DVR to address this apparent discrepancy, and ensure all data are qualified appropriately. 5. DVR SDG 02-5623, Method SW8270C,Section XI: This section indicates that internal standard recoveries were low for three samples for the compound perylene-1312. It is unclear why these results were qualified as estimated"UT' instead of being rejected. Please revise the DVR to clarify why compounds were not rejected due to the low internal standard recovery. 6. DVR SDG 02-5623, Diesel Range Organics by Method SW8015, Section V: This section states that sample SSOIOO-SO-266 should be qualified for diesel range organics due to a surrogate exceeding QC criteria. It is unclear if this sample has been qualified correctly. The laboratory sample report appears to indicate that this sample was diluted ten times. It is unclear in the DVR if the cause of the surrogate exceedance is due to the dilution factor. Also, although the "J" qualifier has been hand written on the laboratory sample report, no qualifier appears on this sample in either Table 5-1, or the Sharpe/Tracy Qualified Results table. Please revise the DVR to address this apparent discrepancy. 7. DVR SDG 02-5623, Gasoline Range Organics by Method SW8015, Section IV: This section indicates that target analytes were found in many of the method blanks. However, from the information presented, it cannot be determined if the affected samples listed in the DVR were qualified correctly. For example, Table 5-1 lists the result for sample SS0164 as 0.03J mg/kg. However, the method blank associated with this sample had a concentration of 0.2 mg/kg. Using the 5x rule, it would appear that this sample should be reported as undetected at the contract required quantitation limit (CRQL)/blank level or sample result. Section IV of the DVR indicates the result should be qualified as not detected "U" at the level of the CRQL. Please revise the DVR and the appropriate data tables to address this apparent discrepancy. 8. DVR SDG 02-6075,Semivolatile Organic Compounds by Method SW8270C, Section III: This section indicates that although linear regression and/or quadratic equations were used, no supporting documentation was provided in the data package. It is unclear what documentation was not provided and if this was a requirement in the QAPP. Please revise the DVR to clarify which supporting documentation was not provided, if this was a requirement of the QAPP, and how data was affected. 9. DVR SDG 02-6075, Carbamate and Urea Pesticides by Method SW8321, Section VIII: This section indicates that only the compounds linuron and methiocarb were reported for carbamate and urea pesticides. However, the QAPP specifies a longer list of compounds. Please revise Appendix E to address this apparent discrepancy. 3