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P E: r-_. <br />aw C"'I"?"D <br />L.. V <br />09 Validation ChecklistENvsRONMSNTAL HLALT <br />Rev. 1 c'='A�4� ILa�NT <br />This form should be used to ensure that the precision, accuracy, representativeness, completeness, and <br />comparability criteria as specified in the Waste Disposal Requisition. <br />The checklist should be complete by selecting or writing "yes" in the "Acceptable" column if the item is <br />present. An explanation should be stated in the "Comments" column if the item is not present. A copy of this <br />report should be maintained with the associated data package. <br />Outside Lab Name: <br />GEL Labs, Charleston, South Carolina <br />Method No(s): <br />GEL Labs: TTLC metals. <br />DB No/Matrix: <br />COC # 18803-.(2 samples: W322657 — Tank <br />clean-out debris / W322658 — Process water): <br />TTLC metals (mg/k ), TTLC metals (mg/1).. <br />Report Level: <br />Results and Summary QC <br />Parameters <br />Acceptable <br />Comments <br />1. Precision <br />Yes <br />RPD failed for Thallium (mg/kg). See Case Summary for <br />comments. Results are deemed acceptable. <br />2. Accuracy <br />Yes <br />MS & MSD failed for some metals (mg/kg). See Case Sum <br />or comments. Results are deemed acceptable <br />3. Representativeness <br />Yes <br />The acquired samples were representative <br />f the waste streams. <br />4. Completeness <br />Yes <br />All requested analyses were performed. <br />5. Comparability <br />Yes The acquired samples were comparable <br />o the waste matrices. <br />Additional Comments: <br />Re: COC # 18803: (2 samples: W322657 — Tank clean-out debris / W322658 — Process water): <br />TLC metals (mg/kg) and TTLC metals (mg/1).. <br />TLC metals tests were performed by GEL Labs, Charleston, South Carolina. <br />See Case Summary for comments. Results are deemed acceptable. <br />Signature <br />Date <br />i✓ i _� Ln <br />kj_� <br />4/16/12 <br />WGS 0148 Expiration Date: 8/7/12 <br />