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← Document results/DEP Box 48/345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083377 345 South End Avenue, Building #100
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Chain of custody for air monitoring at 345 South End

Machine-extracted title · confidence 95%

Record documenting the transfer and custody of air samples from Building #100 at 345 South End Avenue collected on October 22, 2001.

NYC-WTC_000120991–000121041

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083377 345 South End Avenue, Building #100

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NYC 9/11 Public Portal Document

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

ti ACCEPTABLE RANGE # LAB a Z & SAMPLE REPORTED REFERENCE LOWER UPPER PERFORMANCE SCORE NO. RESULTS VALUES SAM LE TYPE ------------ T-~''~------' - ~ ---- 1.4275 1 .4607 1.2043 1.7171 A sP.ir,t chips ( ► ) 1 0.0818 0.0628 0.1003 A 0.66 2 0.086 1,04 4.5632 3.6256 5.5009 A 3 4.2394 0.6454 0.5264 ,x.7645 A -0.52 .. 0.6247

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

1 531.6 565.9373 432.1 699.8 A -0.77 Dust wipes (ug) 123.5 -0.47 128.9551 94.1 113.8 A 2 272.6 272.0263 198.9 345 2 A 0.02 3 895.2703 714.6 1076 A -0.53 4 863.1

roan of-t`.~refecerrcewlaooratories • Reference value is the limit: refereZ..e.Yatue + 3 standard deviations # Upper Lower limit: reference value • 3 standard deviations acceptable; -: Results not reported A: Analysis acceptable L: Results < lower limit, not H: Results > upper limit, resu(t-reference value)/standard deviation 8 Z Score = (reported reported results is based on z-scores. Note: the acceptablitY of according to This is why a reported result may appear acceptable but be identified as an outlier. performance l imits,

W REPORT LABORATORY YEAR-TO-DATE PERFORMANCE LAB I0=07054 PERFORMANCE PROFICIENCY ROUND ROUND • ACCUMULATED 4 ROUNDS(%) 2 ROUNDS(%) RATING # NO. PERFORMANCE SAMPLE TYPE 019 4/4 Paint Chips (%) 020 4/4 021 4/4 4/4 . 16/16 100 8/8 100 P 022

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

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

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

NYC-WTC 000121036

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NYC-WTC_000121036Source: NYC Law Department, mirrored locally

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NYC-WTC_000120940 · Box DEP Box 48

Document tracking environmental samples collected from Building #100 at 345 South End Avenue on October 22, 2001.

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