Chain of custody form for bulk sampling and air monitoring,

NYC 9/11 Public Portal Document

(ELPAT) PROGRAM ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL TESTING INDIVIDUAL LABORATORY REPORT FOR ROUND 024 LAB 07054 SEPTEMBER 23, 1998 10010 ATC AS&OCTATES INC., NEW YORK, MY J

REPORTED REFERENCE ACCEPTABLE RANGE # LAB a Z & , SAMPLE VALUES * LOWER UPPER PERFORMANCE SCORE SAMPLE TYPE NO. RESULTS ----- ----- --- - ------------------------------------------ 0.7432 0.5812 0.9052 A -1.57 Paint Chips (%) 1 0.6582 n.1752 0.2127 0.1492 0.2762 A -1.77 3 0.051 0.0524 fl.ij377 O,i 72 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 3 713.1 820.9 651.2 990.5 A -1.91 39.9 34.2 13.1 55.3 A 0.81 4

1 58 57.8355 37.5 78.2 A 0.02 Dust wipes (ug) -0.98 2 1047.3 1127.0581 884 1370.2 A 3 127.1 128.3887 93.4 163.4 A -0.11 354.8 40L8589 326 477.8 A -1.86 4

laboratories • * Reference value is the mean of the reference deviations # Upper limit: reference value + 3 standard Lower Limit: reference value - 3 standard deviations I A: Analysis acceptable; Results not reported -:

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

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

• ROUND ROUND * ACCUMULATED PERFORMANCE PROFICIENCY NO. PERFORMANCE 4 ROUNDS(%) 2 ROUNDS(%.) RATING 0 SAMPLE TYPE ----------------------------------------------------------------------------- Paint Chips (%) 021 4/4 022 4/4 023 4/4 4/4 16/16 100 8/8 100 P 024

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

Dust 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 results. The numerators represent the number of acceptable NP: Nonproficient Not Rated # P : Proficient -:

Performance ratings based on accumulated results over four rounds soil, or dust (one year). A lab's per• ormance in ground paint chips, (75%) or more of the wipes is rated profici nt (P), if: 1) three-fourths the last accumulated results over four rounds are acceptable or 2) for samples are analyzed and the results are 100 % acceptable. two rounds, all

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