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Document / 23 pages

Monitoring report cover sheet, 345 South End Ave, 2001

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Cover page for a monitoring report regarding environmental testing at 375 South End Avenue in 2001.

NYC-WTC_000095454–000095476

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

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NYC 9/11 Public Portal Document

TESTING (ELPAT) PROGRAM ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL INDIVIDUAL LABORATORY REPORT FOR ROUND 023 LAB ID=07054 JUNE 24, 1998 ATC ASSOCIATES INC. NY, NEW YORK, NY 10010

_~ REPORTED REFERENCE ACCEPTABLE RANGE # LAB a Z & SAMPLE RESULTS VALUES • LOWER UPPER PERFORMANCE SCORE SAMPLE TYPE NO. -----------------------------------' 7C Chips ,,) -•r - nt Chips 1 0.0375 0.1x366 0.0265 0.C467 2.1966 A a 0.18 2 1 .8316 1.8085 1.4203 3 0.4177 0.425 0.3469 0.5042 -0.30 4 1 .0184 1.0131 0.8111 1.2152 0.08

1392.7 1421 .6 1187.5 1655.6 A -0.37 Soi l (mg/kg) 1 2 61.4 57.4 36.9 77.9 A 0.59 3 213 718 9 168 269.7 A -0.35 4 459.4 460.1 388.2 532.2 A -0.03

112.3 125. 1348 99.4 158.9 A - 1 .70 Dust wipes (ug) 1 249.5 71.547 210.4 332.7 A - 1 .08 2 59.0183 38.4 79.7 A -0.56 3 55.2 561.9713 438.3 685.7 A 0.17 • 4 56Y

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

LABORATORY YEAR-TO-DATE PERFORMANCE REPORT LAB I0=07054

ROUND * ACCUMULATED PERFORMANCE PROFICIENCY ROUND PERFORMANCE 4 ROUNDS(%) 2 ROUNDS( ) RATING # SAMPLE TYPE NO. ------------------------------------------------------------------ 020 4/4 Paint Chips (%) 021 4/4 022 4/4 023 4/4 16/16 100 8/8 100 P

020 4/4 Soi l (mg/kg) 021 4/4 022 4/4 4/4 16/16 100 8/8 100 P 023

020 4/4 Oust wipes (ug) 021 4/4 022 4/4 4/4 16/16 100 8/8 100 P 023

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

NYC-WTC 000095473

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NYC-WTC_000095473Source: NYC Law Department, mirrored locally

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