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Air monitoring report cover sheet, 345 South End Ave, 2001

Machine-extracted title · confidence 90%

Cover page for an air monitoring and bulk sampling report for Building #200 at 375 South End Avenue.

NYC-WTC_000095478–000095630

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

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NYC 9/11 Public Portal Document

(ELPAT) PROGRAM ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL TESTING INDIVIDUAL LABORATORY REPORT FOR ROUND 024 LAS .iRDCv07054 SEPTEMBER 23, 1998 ATC ASI baiw• TES INC., NEW YORK, NY 10010

REFERENCE ACCEPTABLE RANGE # LAB B Z & SAMPLE REPORTED RESULTS VALUES * LOWER UPPER PERFORMANCE SCORE SAMPLE TYPE NO.

0.6582 0.7432 0.5812 0.9052 A -1.57 Paint Chips (X) 1 0.1752 0.2127 0.1492 n.2762 A -1.77 2 3 0.05'• 0.0524 0.0377 0.0672 A -0.29 3.2413 3.3834 2.6436 4.1232 A -0.58 4

400.7 440.6 354 527.2 A -1.38 Soil (mg/kg) 1 626.1 686.3 545.3 827.4 A -1.28 2 3 713.1 820.9 651.2 990.5 A -1.91 39.9 34.2 13.1 55.3 A 0.81 4

58 57.8355 37.5 78.2 A 0.02 Oust Wipes (ug) 1 1047.3 1127.0581 884 1370.2 A -0.98 2 3 127.1 128.3887 93.4 163.4 A -0.11 354.8 401.8589 326 477.8 A -1.86 4

laboratories • * Reference value is the ma - ut tna reference # Upper limit: refere^.ce.raiue 3 standard deviations Lower limit: reference value - 3 standard deviations 8 A: Analysis acceptable; Results not reported -:

acceptable H: Results > upper limit, L: Results < tower limit, not deviation & Z Score = (reported result-reference value)/standard -scores. Note: the acceptablity of reported results is based on z to This is why a reported result may appear acceptable according performance Limits, but be identified as an outlier.

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LABORATORY YEAR-TO-DATE PERFORMANCE REPORT LAB ID=07054

ROUND * ACCUMULATED PERFORMANCE PROFICIENCY ROUND NO. PERFORMANCE 4 ROUNDS(%) 2'ROUNDS(%) RATING # . SAMPLE TYPE

Paint Chips (X) 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

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

analyzed. * The denominators represent the number of total samples The numerators represent the number of acceptable results. NP: Nonproficient Not Rated # P : Proficient -:

rounds Performance ratings agebased on accumulated results over four (one year). A lab's r•ormance in ground paint chips, soil, or dust or more of the wipes is rated profict t (P), if: 1) three fourths (75%) accumulated results over four rounds are acceptable or 2) for the last 100 % acceptable. two rounds, all samples are analyzed and the results are

NYC-WTC 000095601

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NYC-WTC_000095601Source: NYC Law Department, mirrored locally

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NYC-WTC_000121364 · Box DEP Box 48

Chain of custody for air samples collected at 345 South End Avenue buildings in late January and early February 2002.

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