Final Remedial Action Completion Report for the ... - Rvaap.org

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Cmt.# A-12 A-13 A-14 A-15 A-16 Page # Line # Appendix C and F. Appendix C, Pg 2-2 Appendix C, Pg 2-2; and General Appendix C Appendix C, Pg 2-4 New Page or Sheet Comment The LCG does not indicate that it is allowable for one of the two surrogates to be outside QC limits for pesticides and PCBs. The data should be qualified. Didn’t see any reference for Table 2-1 in the text to inform the reader that it was there. It would be helpful to indicate the Lot Numbers each sample is associated with. Table 2-2 shows MS/MSD outliers for one sample. The text indicates that there were two. One in lot L0708092 and another in L0708235. Please indicate the associated Lot Numbers on the table. It should be indicated in Table 2-3 which LCS this is and which samples are associated with it. Lot #L0708030 – the last sentence doesn’t make sense. Recommendation Review the LCG criteria and/or provide justification for this deviation. Reference the table in the text and add a column to include the Lot Numbers. Add a column to include the Lot Numbers. Add a column to include which samples are associated with this LCS. Shaw Environmental, Inc. 11 of 39 Response submitted for metal analyses (eight aluminum, two antimony, sixteen arsenic, seven chromium, 15 lead and five manganese), two soil samples were submitted for benzo(a)pyrene, 13 soil samples were submitted for Arochlor-1254, 17 samples were submitted for explosives analyses (13 samples for TNT and four soil samples for RDX) and five soil samples were submitted for the propellants.” The report will be revised to address surrogate recoveries. The last edition of version V of LCG is significantly different from its previous versions and editions. Text will be revised appropriately to reference Table 2-1. Table 2-1 has been revised to reference the appropriate lot numbers. The Table 2-2 will be revised to include a column with corresponding lot numbers. A column will be inserted in Table 2-3 to clearly show LCS and associated samples. Clarify. The last sentence will be revised as follows: “The sample was reextracted (as corrective action) and the recoveries for 2,4,6- Tribromophenol and 2-Fluorophenol
Cmt.# A-17 A-18 Page # Line # Appendix F, Pg 1-1 Appendix F, Section 2.0 New Page or Sheet Added to Section 1.0 Comment Section 1.0 – Please indicate what analyses each laboratory was responsible for. Particularly for this appendix, please reiterate from the main report what the target or analytes of concern are. Shaw Environmental, Inc. 12 of 39 Recommendation Response were below 10% in both cases. This indicates there is matrix interference associated with this sample.” Clarify. The following statement will be included in the text: “The samples were analyzed by Kemron Environmental Services, Marietta, Ohio and TestAmerica Laboratories in North Canton, Ohio. Both laboratories performed analyses for the metals, benz(o)pyrene, and explosives. Kemron performed exclusive analysis for Arochlor- 1254 and TestAmerica performed exclusive analysis for propellants. Explosives analyses performed by TestAmerica were conducted at their laboratory in West Sacramento, Add a statement regarding the selected analytes. California.” Statement will be added to the appendix to indicate the target analytes of concern. Text in each section will be as follows: “2.1 Metals - A total of 163 metal analyses (eight aluminum, two antimony, sixteen arsenic, seven chromium, fifteen lead and five manganese) were performed by Shaw’s contracted laboratories; TestAmerica and KEMRON. 2.2 SVOCs - Two soil samples were analyzed by for benzo(a)pyrene. 2.3 PCBs - Thirteen PCB soil samples were submitted to KEMRON laboratory for Aroclor- 1254 anlysis.
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