NYC-WTC_000219925

NYC 9/11 Public Portal Document

Search -1 Result - APPENDIX A TO SUBPART E - INTERIM TRANSMISSION EL... Page 33 of 38

TABLE III - SUMMARY OF LABORATORY DATA QUALITY OBJECTIVES Conformance Unit Operation OC Chack Frequency- Expectation Sample receiving Review of receiving Each sample 95% complete report Sample custody- Review of chain-of Each sample 95% complete -custody record Sample preparation Supplies and On receipt Meet specs, or reagents rej ect Grid opening size 20 openings/20 100% grids/lot of 1000 or 1 opening/sample Special clean area After cleaning or Meet specs or monitoring service reclean Laboratory blank 1 per prep series Meet specs, or or 10% reanalyze series Plasma etch blank 1 per 20 samples 75% Multiple preps (3 Each sample One with cover of per sample) 15 complete grid sqs. Sample analysis System check Each day Each day Alignment check Each day Each day Magnification Each month or 95% calib­ ration with low and after service high standards ED calibration by Weekly 95% gold standard EDS calibration by Daily 95% copper line Performance check Laboratory blank Prep 1 per series Meet specs or (measure of or 10% reanalyze series cleanliness) read 1 per 25 samples Replicate counting 1 per 100 samples 1.5 X Poisson Std. (measure of Dev. precision) Duplicate analysis 1 per 100 samples 2 X Poisson Std. (measure of Dev. reproducibility) Known samples of Training and for 100% typical materials comparison with (working stan­ unknowns dards) Analysis of NBS SRM 1 per analysis per 1.5 X Poisson Std.

http://lexis/research/retrieve?jni=el35f2ca3d266867e53d261df3205722&_fmtstr=FULL5... 02/04/2002 CITY_21MC100_012558697

NYC-WTC_000219957