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← Document results/DEP Box 02/345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083378
Document / 123 pages

Chain of custody form for bulk sampling and air monitoring,

Machine-extracted title · confidence 90%

Documentation tracking the chain of custody for environmental samples collected from Building #400 at 375 South End Avenue in October 2001.

NYC-WTC_000095208–000095330

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083378”

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Scanned page image, NYC-WTC_000095322
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NYC 9/11 Public Portal Document

(ELPAT) PROGRAM ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL TESTING INDIVIDUAL LABORATORY REPORT FOR ROUND 022 LAB ID=07054 MARCH 18, 1998 ATC ASSOCIATES, INC. NY, NEW YORK, NY 10010

REFERENCE ACCEPTABLE RANGE # LAB 2 Z & SAMPLE REPORTED RESULTS VALUES ' LOWER UPPER PERFORMANCE SCORE SAM LE TYPE NO. --------------------- ----------------------- --------------- .4607 1.2043 1.7171 A -0.39 P.:int Chips (X) 1 1.4275 1 0.66 2 0.086 0.0818 0.0628 0.1003 A 3 4.2394 4.5632 3.6256 5.5009 A -1.04 0.6247 0.6454 0.5264 1.7645 A 0.52 4

351.6 360.8 292.3 429.4 A -0.40 Soil (mg/kg) 1 2 76.8 73.2 49.7 96.7 A 0.46 3 799.3 834.5 682.5 986.5 A -0.69 683.2 560 806.3 A -0.81 4 649.9

531.6 565.9373 432.1 699.8 A -0.77 Dust Wipes (ug) 1 2 123.5 128.9551 94.1 1(-3.8. A -0.47 3 272.6 272.0263 198.9 345..2 A 0.02 863.1 895.2703 714.6 1076 A -0.53 4

!re~ref.ecence..Lzboratories;_;..- • ' Reference value is the mean •ofv deviations # Upper limit: reference.%vatue +.3 standard Lower limit: reference value - 3 standard deviations 2 A: Analysis acceptable; -: Results not reported < lower limit, not acceptable H: Results > upper limit, L: Results value)/standard deviation & Z Score = (reported result-reference based on z-scores. Note: the acceptablity of reported results is This is why a reported result may appear acceptable according to performance limits, but be identified as an outlier.

LABORATORY TEAR-TO-DAJE PERFORMANCE REPORT LAB ID=07054

ROUND * ACCUMULATED PERFORMANCE PROFICIENCY ROUND PERFORMANCE 4 ROUNDS(X) 2 ROUNDS(X) RATING # • SAMPLE TYPE NO. --------------------------------------------------- -------------------------- Paint Chips (X) 019 4/4 020 4/4 021 4/4 4/4 . 16/16 100 8/8 100 P 022

Soil (mg/kg) 020 4/4 021 4/4 022 4/4 12/12 100 8/8 100 P

Dust Wipes (ug) 019 4/4 020 4/4 021 4/4 022 4/4 16/16 100 8/8 100 P

analyzed. ' The denominators represent the number of total samples represent the number of acceptable results. The numerators NP: Nonproficient -: Not Rated # P : Proficient four rounds Performance ratings are based on accumulated results over A lab's performance in ground paint chips, soil, or dust (one year). or more of the wipes is rated proficient (P), if: 1) three-fourths (75X) last accumulated results over four rounds are acceptable or 2) for the 100 % acceptable. two rounds, all samples are analyzed and the results are

NYC-WTC 000095322

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NYC-WTC_000095322Source: NYC Law Department, mirrored locally

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