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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
Document / 51 pages

Chain of custody for bulk sampling at 345 South End

Machine-extracted title · confidence 95%

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

NYC-WTC_000120940–000120990

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

TESTING (ELPAT) PROGRAM ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL INDIVIDUAL LABORATORY REPORT FOR ROUND 024 LAB =~ 07054 SEPTEMBER 23, 1998 ATC As'SOC,ATES INC., NEW YORK, MY 10010

REPORTED REFERENCE ACCEPTABLE RANGE # LAB a Z b SAMPLE * • cAMPLE TYPE N0. RESULTS VALUES LOWER UPPER PERFORMANCE SCORE ---------------------------------- ~_a.. ------- - 0.6582 0.7432 0.812 0.9052 A -1.57 ~Paint Ch ps (om) 1 0.1752 0.2127 0.1492 0.2762 A 1.77 3 0.051 0.0524 0.Iii77 0.,%,72 A -0.29 4 3.2413 3.3834 2.6436 4.123[ A •0.58

400.7 440.6 354 527.2 A -1.38 Soil (mg/kg) i A -1.28 626.1 696-3 545.3 827.4 3 713.1 820.9 651 .2 990.5 A -1 .91 39.9 34.2 13. 1 55.3 A 0.81

58 57.8355 37.5 78.2 A 0.02 Dust wipes (ug) i 2 '047.3 1127.0581 884 1370.2 A -0.98 3 127. 1 128.3887 93.4 163.4 A -0. 11 4 354.8 401 .8589 326 477.8 A • 1 .86

laboratories • Reference value is the mean of the reference Upper l imit: reference value + 3 standard deviations Lower L imit: reference value - 3 standard deviations m A: Analysis acceptable; Results not reported < lower Limit, not acceptable H: Results > upcer Limit, L: Results value)/standard deviation 8 Z Score = (reported result-reference based on z-scores. Note: the acceptabl ity of reported results is acceptable according to This is why a reported result may appear performance l imits, but be identified as an outl ier.

LABORATORY YEAR-TO-DATE PERFORMANCE REPORT LAB 1D=07054

ROUND * ACCUMULATED PERFORMANCE PROFICIENCY ROUND PERFORMANCE 4 ROUNDS(.) 2 ROUNDS(, ) RATING . SAMPLE TYPE NO. ................................. ...........v -------------- -----------------

Paint Chips (Y.) 021 4/4 022 4/4 023 4/4 024 4/4 16/16 100 8/8 100 P

Soil (mg/kg) 021 4/4 022 4/4 023 4/4 4/4 16/16 100 8/8 100 P 024

021 4/4 Dust Wipes (ug) 022 4/4 023 4/4 4/4 16/16 100 8/8 100 P 024

analyzed. • The denominators represent the number of total samples numerators represent the number of acceptable results. The NP: 1onproficient : Not Rated P : Proficient Performance ratings Fe,-based on accumulated results over four rounds soi l , or dust (one year). A Lao's err ormance in ground paint chips, profici nt (P), if: 1) three-fourtns (75%.) or more of the wipes is rated for the Last accumulated results over four rounds are acceptable or 2) are 100 i acceptable. two rounds, all samples are analyzed and the results

NYC-WTC 000120983

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NYC-WTC_000120983Source: NYC Law Department, mirrored locally

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