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

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RTC for Draft LL1-4 Remedial Action Completion Report Cmt.# Page # Line # Comment A-66 Table B-4 Why are there so many “NA”s on the tables? Please clarify. A-67 Appendices (General) Change the cover pages, title and spine to match the title of the main text of the report. A-68 Please send a copy of the bills of lading and manifests to my office so I can have a quick look at them. If I cannot review them by the 30JUN08 deadline; this will not have any impact on project approval. A-69 Verification needed. 100% of the data was verified. Was a minimum of 10% of the data validated by an independent third party? Please clarify. A-70 Thanks for sending along the field logs. I will look at them as soon as possible. A-71 Please make sure waybills are included in the official project file to complete the chain of custody. A-72 Clarify the lack of MS/MSD samples for a number of sample groups. Recommendation No response required – please note for future work. No response required – please note for future work. Response for VOCs. The NAs for certain chemicals indicates the sample was not analyzed for that particular chemical in that sample. There are a large number of NAs on the table because an expanded analyte list was used for the same method (8260B and 8270C) on the second set of samples as compared to the first. The extended lists were not requested by Shaw and were run by the laboratory by mistake. Regardless of the list, no VOC and SVOC impact above allowable backfill thresholds were detected. The title will be changed to match the Cover and Title page. See Comment A-2. Copies of the BOLs and Manifests will be forwarded during week of 22 June 2008. Shaw validated 100% of the received data for samples collected during the work prior to inclusion for accuracy. Shaw did not have data validated by an independent third party. Your welcome and thanks for your prompt attention. Comment noted – we will retain waybills and include in files on future work. Shaw collected MS/MSD samples at a minimum frequency of 5% (1 per 20 samples) for all sample groups as Shaw Environmental, Inc. 6 of 13 June 20, 2008
RTC for Draft LL1-4 Remedial Action Completion Report Cmt.# Page # Line # Comment A-73 Appendices (specific) App C (data verification report for metals) – Page 4 (first verification report) indicates items were omitted, but it wasn’t clear what those items were. (This is just one example of several instances.) A-74 Appendices (specific) Are the copies of the data verification reports that are in the final project file signed? A-75 Appendices (specific) In several of the data verification reports, there is missing information – ex. missing explosives information in the first verification report (App C). A-76 Appendices (specific) Verifier should check typing – uses exclamation points a number of times for the numeral “1” throughout. Also check Recommendation No response required – please note for future work. No response required – please note for future work. No response required – please note for future work. No response required – please note for future work. Response specified in the work plan. In all, a total of 17 MS/MSD samples were collected which amounts to greater than 10% of the total confirmatory samples collected (163). It should be noted that the Draft Closeout Report incorrectly stated that no MS/MSD sample was collected for the SVOC sample group. One MS/MSD sample was collected for SVOCs and Table 3-4 will be revised to incorporate this correction. Comment noted – we will revisit this with the lab for future reports. All data verification reports will be signed by the Shaw Project Chemist in the final version of the closeout report. For the Appendix C data verification report (groundwater), the table of contents requires revision. Missing information in this report (ie. explosives and VOCs) are included in the report and the appropriate sections will be referenced in the table of contents. Propellants were not identified in groundwater and reference to this section will be removed from the table of contents. Shaw will review all other data verification reports to ensure there are no other discrepancies. Agreed. This is an avoidable mistake. This will be discussed with lab and technical team. Shaw Environmental, Inc. 7 of 13 June 20, 2008
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