ARCHIVED REPORTS XR0003301 - Laserfiche WebLink

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Canonie Environmental Case Narrative Client- ENVIRONMENTAL SOLUTIONS Project # -L90076 • LP #: 9955 Inorganics Case Narrative Due to matrix interference, the reporting limits have been raised to 5 . 0 mg/Kg for selenium and 10. 4 mg/Kg for arsenic The antimony digestion spike recovery was only 22% . The post spike for antimony was within the control limits The nickel RPD was 27 . 4%, slightly higher than the 20% control limit . The analyses were completed in accordance with SW 846 protocol , Pesticides Case Narrative TEH: This narrative covers the analysis of 1 sample in ac- cordance with SW 846, 3rd. ED. The specified holding time for this analysis was met. Surrogates were not used in this analysis . Spike recoveries were within acceptable limits . The method blank did not contain any target compounds or interfering peaks at or above the reporting limits . Continu- ing calibration criteria was met for this analysis _ OCP : Calibration was verified for all samples analyzed. The method blank was free from interferences at or above the reporting limits . Two non-target peaks were detected in the blank, but they did not affect the target compounds . Interferences in sample SD-A3 (855870) exceeded the spike . concentration and required a dilution for analysis, which invalidates any recovery data- Extractions Pest . Case Narrative TEH- All samples were extracted within required holding time by method 3550 . Stockpile composite (855880) has a final volume of 10 . 0 mis due to difficulty in volume reduction- OCP-8080 All samples were extracted within required holding time by method 3540 . A THA clean-up was performed to remove sulfur compounds . Final volume was 10. 0 mis , GC/MS Case Narrative - Volatile The sample was analyzed for volatile organics in accordance with QC criteria specified in SW846 Method 8240 within the required holding time- The tuning and standard calibrations, blank, internal standard areas/retention times, surrogate and spike recoveries were within acceptable QC guidelines _ The blank and sample had methylene chloride present which was fudged a laboratory artifact and not reported. GC/MS Semivolatile Case Narrative The soil sample was analyzed for semivolatile compounds in accordance with QC criteria specified in SW846 Method 8270 . The sample was analyzed withing required holding times . The • blank was acceptable within QC criteria limits . The tuning calibration and standards calibrations all met QC criteria. The internal standard areas, retention time and surrogate l recoveries met QC criteria guidelines. :ate iii N"rohmental