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← Document results/DEP Box 15/508 X 5/10/02 5/14/02
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Laboratory drip rate log form, May 2002

Machine-extracted title · confidence 90%

Form recording liquid extractor drip rates and pH values for sample processing at the Department of Environmental Protection laboratory.

NYC-WTC_000015834–000015837

Folder label: “508 X 5/10/02 5/14/02

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NYC 9/11 Public Portal Document Method 508 PC Checklist

Batch # $508-/2523/ab/)a 1 .Calibration: 3 levels IC %RSD within 20% ()F (icy) within 20% of T.V. F

CCV in the beginning of the sequence, within 20% of T.V. P F CCV, after 8 hours, within 20% of T.V. P F CCV at the end of the sequence, within 20% of T.V. F

2. Extraction: within 7 days of collection F

3. Injection: within 14 days of extraction F

4. Endrin/DDT breakdown: <20% F

5. LPC standard: S/N F PGF F Resolution F

6. Surrogate recoveries: Samples that failed:

Samples that failed and were reanalyzed:

7. LRB: F

8.FB: P F it needed

9. LFB/batch: @F 10. LFM/batch: F Agency: 627

11. LFM dupe/batch: ® F Agency:

12. PC: within 20% of T.V. P Ft Not needed

13. Duplicate samples: List positive samples which were reextracted

14. Problems were encountered: No Yes What type: 15. Comments:

Analyst' Supv. Decision Approved IC: initial calibration LPC: laboratory performance check LFB: laboratory fortified blank CCV: continuing calibration verification FB: field blank LFM: laboratory fortified matrix ICV: initial calibration verification LRB: laboratory reagent blank QC: quarterly check

Rev. 05/13/02 MN

NYC-WTC_000015835

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NYC-WTC_000015835Source: NYC Law Department, mirrored locally

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